Final answer:
Jim, who measures mass, may use kilograms, an appropriate unit for objects with considerable mass like textbooks. Smaller items, like bananas, would be measured in grams, while milligrams are used for very tiny masses in scientific settings.
Explanation:
The student whose measurement might be in kilograms is Jim, who measures mass. Kilograms are the appropriate unit for measuring objects with considerable mass, such as textbooks or humans. For example, a textbook has a mass of about a kilogram. In contrast, grams would be more suitable for measuring smaller objects like a banana, since a banana's mass is typically around 120 grams - far less than a kilogram. Milligrams are even smaller units, which would not be practical for everyday objects as they are usually used to measure tiny quantities, as might be done by scientists in a lab. In learning environments, balances or scales are used to measure mass, which can range from small milligrams up to a few kilograms.
To choose the appropriate tool for following measurements: 1. The volume of a water balloon would be measured using a measuring cup or another volumetric tool. 2. The length of a basketball court would be measured using a measuring tape or a laser distance meter. 3. The weight of an apple is most conveniently measured using a kitchen scale, which would likely display in grams. 4. The volume of a milk carton could be indicated on the carton but could also be measured using a graduated cylinder or measuring jug.
You are given a solution of sugar and sand and water your task is to separate sugar from sand which of the following experimental designs would you choose
Answer:
Explanation:
Filtration followed by evaporation:
To separate the mixture of sand and sugar, it is best to use the separation technique of filtration then evaporation.
Pour the water into the mixture. The sugar will dissolve with time in the water. Sand is made up of quartz and does not dissolve in water.
After the dissolution, filter the solution to separate the sand using a filter paper.
Dry the sand thereafter then proceed to evaporate the sugar with water solution. Evaporation will turn water into vapor and the sugar crystals will be left behind.
To separate sugar from sand in a water mixture, filtration followed by evaporation is the most effective method. Sand is retained on the filter paper, while the sugar dissolves in the water and can be retrieved through evaporation.
Explanation:To separate sugar from sand in a solution with water, we can use the concept that sugar is soluble in water whereas sand is not. The separation can be achieved by a process called filtration. First, we stir the mixture to ensure that all the sugar dissolves in the water. Then, we pour the mixture through a filter paper. The sand particles will be trapped by the filter paper, while the sugar-laden water will pass through. After collecting the filtrate (the sugar-water solution), we can recover the sugar by evaporating the water, leaving the sugar behind.
Additionally, we can consider the density difference between sugar and sand as a factor irrelevant to this method of separation but interesting to note for other purposes such as differentiating substances in a pile, as with the take-home experiment with sugar and salt. Also, while this experiment doesn't involve visiting virtual labs, such labs can be useful for understanding the dissolution behaviors of substances like sugar and salt in water.
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Which step of the scientific method involves obtaining resources for your question
Answer:
c-do background research.
Explanation:
The scientific methods exposes the way scientists carry out their investigation and how findings are reported and at times discarded. It is systematic way of studying perceived observations in the environment.
During the course of an investigation, scientists may seek to find out about the prevailing knowledge about a phenomena and the level of research that might have been done in that regard. It is proper for such a scientist to do a background research by searching for related journals and publications in that field.
When an Adam that has no charge loses two electrons what does it become
Answer:
See below.
Explanation:
It becomes and ion with 2 positive charges:
For example: Mg - 2e ---> Mg2+.
Which type of electromagnetic radiation has a longer wavelength than visible light?
Gamma rays
Infrared radiation
Ultraviolet radiation
X‒rays
Answer:
Explanation:
The wavelenght of a electromagnetic radiation is related with it's energy.
The longer the wavelenght the lower the energy.
The ekectromagnetic radiation that have an energy larger than the visible light is Gamma Rays, x-rays and ultraviolet radition, so it have a shorter wavelenght.
And the Infrared Radiation has an energy smaller than the visible light, having a longer wavelenght.
Nathaniel's favorite food
is microwave popcom.
He can't stand to see
unpopped kernels in the
bottom of the bag. The
next time Nathaniel
goes to the grocery
store he buys all brands
of microwave popcom.
He wants to find out if a
certain brand of
popcom leaves less
kemels than the one
he's been eating
3. What is the
independent variable?
4. What is the
dependent variable?
5. Write a hypothesis.
Answer:
independent variable is unpopped corn the dependent is al kinds of brands of popcorn.
Explanation:
Answer:
Explanation:
"Nathaniel's favorite food is microwave popcorn. He loves microwave popcorn so much he can't stand to see unpopped kernals in the bottom of the bag. Nathaniel thinks to himself when this happens, "Thos ...?"
what is the wavelength of electromagnetic radiation having a frequency of 5.00 x 10^12 Hz?
The wavelength of electromagnetic radiation will be "[tex]6.00\times 10^{-5} \ m[/tex]".
According to the question,
Frequency,
[tex]v = 5.00\times 10^{12} \ Hz[/tex]and,
[tex]c = 3.00\times 10^{8} \ ms^{-1}[/tex]We know the formula,
→ [tex]\lambda = \frac{c}{v}[/tex]
By putting the given values in the formula, we get
→ [tex]= \frac{3.00\times 10^8}{5.00\times 10^{12}}[/tex]
→ [tex]= 6.00\times 10^{-5}[/tex]
Thus the above wavelength is right.
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The wavelength of electromagnetic radiation with a frequency of 5.00 x 10¹² Hz is 600 nanometers.
To find the wavelength of the electromagnetic radiation, we can use the speed of light equation:
c = λν
where c is the speed of light (approximately 3.00 x 10⁸ m/s), λ is the wavelength, and ν is the frequency.
Rearranging the equation to solve for λ, we get:
λ = c / ν
Plugging in the given frequency (ν = 5.00 x 10¹² Hz), we get:
λ = 3.00 x 10⁸ m/s / 5.00 x 10¹² Hz
λ ≈ 6.00 x 10⁻⁵ m
λ ≈ 600 nm
A farmer wants to know if a new pesticide will produce better tomatoes than
his old pesticide. Which of the following is the best hypothesis to use to
address his question?
O
A. Using the new pesticide makes the tomato plants grow taller than
using the old pesticide.
O
B. Using the new pesticide is better for the environment than using
the old pesticide.
O
C. Using the new pesticide is less expensive than using the old
pesticide.
O
D. Using the new pesticide produces bigger tomatoes than using the
old pesticide.
Answer:
D. Using the new pesticide produces bigger tomatoes than using the
old pesticide.
Explanation:
This hypothesis is best to test for the effect of the new pesticide on the tomato plant.
A pesticide is chemical formulation used to kill pests of farm crops.
Pests prevents the healthy and proper growth of plants thereby resulting in poor yield on the farm.
For the farmer to ascertain the effect of the pesticide on his farm crop, he must compare the yield of his produce. Some tomato might grow well but would not bear good fruit. If the farmer focuses on the fruit produced, he would have derieved a good hypothesis in his experiment.
Answer:
D.
Explanation:
did test
why do we say there is a finite number of elements in the universe?
Answer:
Because the number of subatomic particles is finite.
Explanation:
You probably know that in addition to electrons, protons, there are many other subatomic particles with strange names like quarks, neutrinos, muons, bosons, etc.
There are many ways in which these could theoretically be combined to make atoms of new elements.
However, the number of different subatomic particles is finite, so the number of possible combinations is also finite.
Even if scientists discover more new subatomic particles, the number of possible combinations will increase, but it will still be finite.
Thus, there is a finite number of elements in the universe.
We have that for the Question "why do we say there is a finite number of elements in the universe" it can be said that
Since there is a finite number of sub atomic elements that make up the atoms and in turn elements there is also a finite number of elements in the universeFrom the question we are told
why do we say there is a finite number of elements in the universe?
Generally
Electrons, protons, and many other subatomic particles like quarks, neutrinos, muons are the make up of atoms and in turn elements
Therefore
Since there is a finite number of sub atomic elements that make up the atoms and in turn elements Hence it is only logical to know that good permutation of these subatomic molecules will give a finite number of possible elementsFor more information on this visit
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What type of substance is soda?
Answer:
1:Examples of pure substances include tin, sulfur, diamond, water, pure sugar (sucrose), table salt (sodium chloride) and baking soda (sodium bicarbonate). Crystals, in general, are pure substances. Tin, sulfur, and diamond are examples of pure substances which are chemical elements.
Explanation:There is one phase of matter in a bottle of soda: a liquid phase. Soda is a mixture of water, carbon dioxide gas, and solid sugar.
Soda is a chemical mixture, a solution of ingredients like sugar, flavors, and, notably, dissolved carbon dioxide that provides its typical fizz.
Explanation:Soda is defined as a mixture in the field of chemistry. It is a solution because its ingredients, like water, sugar, and various flavorings, are perfectly combined and uniformly distributed within the liquid. There are two main types of substances in soda: the solvent, which is usually water, and various solutes, which include sugars and flavorings. Moreover, the fizz that is characteristic of soda is due to the presence of dissolved carbon dioxide, which gives it its signature sparkling appearance and popping sensation when released as a gas.
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3. A certain paint has a density of 0.914 g/mL. You need to cover a wall that is 7.6
meters long and 2.74 meters wide with a layer of paint that is 0.13 mm thick. What
volume of paint (in liters and gallons) is required? What is the mass (in grams and
pounds) of the paint layer?
How do i set this up?
Answer:
1) a) the volume in liters = 2.7 liter
b)the volume in gallons = 0.7132645414 gallons
2) a) the mass= 2467.8 g
b) mass in pounds = 5.4 pounds
Explanation:
1) first we need to get the volume in m^3 by using the following format:
volume = the area of the wall * the thickness of the wall
when the area = the long * the wide
so by substitution:
volume = ( 7.6 m *2.74 m ) * 0.00013 m
= 0.0027 m^3
a) when 1 m^3 = 1000 liters
so the volume in liters = 0.0027 * 1000 = 2.7 liter
b) when 1 m^3 = 264.172 gallons
so the volume in gallons = 0.7132645414 gallons
2) the mass formula is:
mass = the volume * density
= 2700 ml * 0.914 g/mL
= 2467.8 g = 2.467 Kg
1 g = 0.00220462 pounds
so mass in pounds = 5.4 pounds
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which measurements are needed in order to calculate the density of a given object
Answer:mass and volume
Explanation: as i know you should divide mass and volume for obtain density
Answer : The correct option is, Mass and volume.
Explanation :
Density : It is defined as the mass of a substance contained per unit volume.
The unit of mass is gram (g) and the unit of volume is milliliter (ml). So, the unit of density is g/ml.
Formula used :
[tex]Density=\frac{Mass}{Volume}[/tex]
For example : If mass of object is 550 grams and volume of water displaced 25 ml. Calculate the density of an object.
By using formula, we get:
[tex]Density=\frac{550g}{25ml}=22g/ml[/tex]
Thus, density of the object will be 22 g/ml
Hence, the mass and volume measurements are needed in order to calculate the density of a given object.
Why does a solid change to liquid when heat is added?
O A. The spacing between particles decreases.
B. Particles lose energy.
C.
The spacing between particles increases.
D. The temperature decreases.
Reset
Next
A solid changes to a liquid when heat is added because the energy causes particles to vibrate more vigorously, increasing the spacing between them and allowing them to move more freely, thus overcoming the forces holding them in a solid state. Option C is correct .[The spacing between particles increases]
When heat is added to a solid, it causes the particles (such as atoms or molecules) in the solid to gain energy. This increase in energy causes the particles to vibrate more vigorously, which weakens the forces that hold them together in a fixed position. As a result, the particles can start to move around more freely. This is why the spacing between particles increases, leading to a state change from solid to liquid. This transition from solid to liquid is referred to as melting.
During this phase change, the temperature of the substance does not increase; instead, the added energy is used to overcome the intermolecular forces and change the state of the substance. Once enough energy has been absorbed to weaken these forces sufficiently, the solid becomes a liquid.
Which of these mixtures would best be separated through distillation
Dry ice and ice
Soil and water
Water and acetone
Iron and sand
Answer: Water and acetone
Explanation: you will find that the water and the soil are polar opposite, while the principal component of the water are Hydrogen and Oxygen, in the acetone you will find a change of carbon, the components from each molecule confer to each one specific physical properties for example the boiling point, and the distillation is a physical separation based on the boiling point.
then you can find the boiling point of the water in 100 °C, and the boiling point of the acetone is 56 °C, this give as a difference of 44 °C,
then while the acetone is boiling the water is liquid state, and this give us the opportunity to the separate the acetone in gas state by condensation after the boiling.
An atomic ion has 5 protons and 2 electrons. What is the charge of the ion?
Answer:
Charge of the ion is +2 because it has 2 more protons. Hope this helps you.
Explanation:
The charge of the atomic ion with 5 protons and 2 electrons is +3.
The charge on an ion can be determined by comparing the number of protons to the number of electrons. If the number of electrons is greater than the number of protons, the ion will have a negative charge. If the number of protons is greater than the number of electrons, the ion will have a positive charge.
In this case, the number of protons is 5, which means the atom is a neutral atom of Boron. However, the number of electrons is 2, which means that the atom has lost two electrons. Since electrons carry negative charge and two electrons are lost, the ion has a charge of +2. Therefore, the charge of the atomic ion is +3.
Thus, the charge on ion is +3.
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is limestone a mixture or a pure substance
Answer:
Limestone is a pure substance
Explanation:
It includes many elements and compounds that make it more difficult to break down Limestone.
Limestone can be a heterogeneous mixture with impurities or in pure form, a compound of calcium carbonate (CaCO3). Its classification as a mixture or pure substance depends on the purity of the sample.
Explanation:Limestone is commonly classified as a mix-ture, specifically a heterogeneous mixture, as it often contains various impurities such as sand and clay particles, fossil fragments, and different minerals. However, it primarily consists of calcium carbonate (CaCO3), which in its purest form is a pure substance and a compound. A pure substance has a constant composition and set properties, such as a single melting point and single boiling point.
When considering mixtures, these are combinations of two or more substances, where each retains its individual properties. Limestone can come in different qualities, with varying proportions of impurities, which affects its overall composition and properties. Therefore, its classification may depend on the context and purity of the sample being considered.
Which subatomic particle identifies the atom
Answer:
proton
Explanation:
The atoms is made from a nucleus and a electronic shell. The nucleus is composed from protons (positively charged) and neutrons (no charge). The electronic shell is defined by the presence of electrons (negativity charged).
Now a particular element is identified by the number of protons which have to be equal to the number of electrons in the electronic shell. A particular element may have the same number of protons but different number of neutrons, these are isotopes which have the same chemical properties.
The subatomic particle that primarily identifies an atom is the electron. Its arrangement in energy levels around the nucleus determines the atom's chemical properties and behavior.
The subatomic particle that primarily identifies and characterizes an atom is the electron. Electrons are negatively charged particles that orbit the nucleus of the atom in specific energy levels or shells. The number and arrangement of electrons in these shells determine the chemical properties and behavior of the atom.
Specifically, the arrangement of electrons in the electron cloud around the nucleus defines the atom's chemical properties, its reactivity, and how it interacts with other atoms to form chemical compounds. This electron configuration also determines an atom's place on the periodic table, as elements are organized by their atomic number (the number of protons, which is equal to the number of electrons).
While protons and neutrons are also important subatomic particles found in the nucleus of the atom, they are not directly responsible for identifying or characterizing the atom in terms of its chemical properties or behavior. Protons provide the atom's identity by determining its atomic number, which is unique for each element, but electrons play a more direct role in interactions and chemical behavior due to their involvement in chemical bonding.
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A student measures the mass of an 8 cm block of brown sugar to be 12.9 g. What is the density of
the brown sugar?
Answer:
0.0025g/cm³
Explanation:
Given parameters:
Mass of the brown sugar = 12.9g
dimension of the sugar = 8cm
unknown:
density of the sugar = ?
Solution
Density is defined as the mass per unit volume of a substance. The expression is given below:
Density = [tex]\frac{mass}{volume}[/tex]
We know the mass of the substance but the volume is unknown:
Volume of the brown sugar = l x bx h = 8x8x8 = 512cm³
Density of the brown sugar = [tex]\frac{12.9}{512}[/tex] = 0.0025g/cm³
What is the volume of a salt crystal measuring 5.44 x 10 ^ - 2 m by 2.5 x 10 ^ - 3 m by 7.9 x10-^ 3 m ?
Answer:
The volume of a salt crystal with the mentioned dimensions is V= 107.44 x 10^-8.
Explanation:
To solve this problem we multiply the length of the sides of the crystal. To calculate this product you have to calculate:
1) (5.44 x 2.5 x 9,9). and
2) (10^-2 x 10^-3 x 10^-3). Here we have the product of powers of equal base so we should sum the exponents.
⇒(10^-2 x 10^-3 x 10^-3) = 10^(-2 + -3 + -3) ⇒ (10^-2 x 10^-3 x 10^-3) = 10^-8.
Finally,
V= (5.44 x 10^-2)x (2.3 x 10^-3) x (7.9 x 10^-3) ⇒ V= 107.44 x 10^-8 m.
Which city is located at 15 degrees south, 50 degrees east
Answer:
Antalaha, Madagascar
Explanation:
The closest city to geographical coordinates 15 degrees south, 50 degrees east - 15°00'00"S 50°00'00"E- is Antalaha, a commune of the Republic of Madagascar. The city is part of the Anthala district in northeastern Madagascar in the Sava Region ; the city population is 34,112 and has a tropical rainforest climate.
What are the names of the two groups of elements known as the rare earth elements? _________ ___and ____________
Answer:The Rare Earth Elements are: Lanthanide Series and Actinide Series.
Answer:The thirty rare earth elements are composed of the lanthanide and actinide series. One element of the lanthanide series and most of the elements in the actinide series are called trans-uranium, which means synthetic or man-made.
Explanation:
solubility can be used to purify substances
Answer:no, i dont think so
Explanation: Solubility is the property of a solid, liquid or gaseous chemical substance called solute to dissolve in a solid, liquid or gaseous solvent. however it depends on the physical and chemical properties of the solute and solvent as well as on temperature, pressure and presence of other chemicals
sauce: wikipedia XD
A student measures the mass of 8cm block of brown sugar to be 12.9g what is the density of the brown sugar
Final answer:
The density of an 8cm³ block of brown sugar with a mass of 12.9g is calculated by dividing mass by volume, resulting in a density of 1.6125 g/cm³.
Explanation:
To calculate the density of the brown sugar, we need to use the formula density = mass/volume. The student measured a mass of 12.9g for an 8 cm³ block of brown sugar. To find the density, we divide the mass by the volume of the sugar block.
The calculation is as follows:
Density = Mass / Volume
Density = 12.9g / 8 cm³
Density = 1.6125 g/cm³
Hence, the density of the brown sugar is 1.6125 g/cm³.
what is a property that depends on the amount of matter in a sample
Answer:
An extensive property is a property that depends on the amount of matter in a sample. Mass and volume are examples of extensive properties. An intensive property is a property of matter that depends only on the type of matter in a sample and not on the amount.
HOPE THIS HELPED!!!!!!!!!!!!!!XDDDDDDDDD
Final answer:
An extensive property depends on the amount of matter in a sample, examples being mass and volume. Intensive properties such as temperature do not vary with the quantity of matter. The differentiation between these property types is essential for accurately describing and measuring substances in chemistry.
Explanation:
A property that depends on the amount of matter in a sample is called an extensive property. Examples of extensive properties are mass and volume. For instance, a gallon of milk has a greater mass and volume than a cup of milk, illustrating that the value of an extensive property increases with the amount of matter. In contrast, an intensive property does not depend on the amount of matter; temperature is an example of this, where the temperature of small or large quantities of a substance at thermal equilibrium will be the same.
Understanding the difference between extensive and intensive properties is crucial for characterizing substances and engaging in scientific measurements. The amount of heat is an extensive property because it depends on the matter's quantity, whereas temperature is an intensive property as it remains consistent regardless of the sample size. A hot cooking oil drop and a pot of hot oil could have the same temperature, an intensive property, yet the pot contains more heat, showing an extensive property.
put the following metric units in order from smallest to largest: pL, mL, dL, kL.
Answer:
Explanation:
These are multiples and submultiples of the unit liters.
pL, mL, dL and kL
pL<mL< dL< kL
Units can be expressed in form of multiples and submultiples form using the following prefixes:
Note: submultiples are lower than multiples:
submultiples 10⁻¹ deci(d)
10⁻³ milli(m)
10⁻¹² pico(p)
multiples 10 deca(da)
10³ kilo(k)
Which type of force will an object move towards?
O weakest
O balanced
O strongest
O net
The net force is the force that determines the direction of the object's movement based on the overall influence of all forces present.
Net force is the type of force that an object will move towards. When the net force is present, it indicates the overall force that influences the object's motion. For example, in a scenario where forces are equal but opposite, resulting in a balanced state, the net force is zero.
How is an element different than a compound? Give an example of each
Answer:
A compound contains atoms of different elements chemically combined together in a fixed ratio. An element is a pure chemical substance made of same type of atom.
Answer:
compound is made up of 2 or more elements, while element is just pure element
a simple example would be that 2 is an element while 2+3 is a compound
or O(oxygen) is an element while CO2 (carbon dioxide) is a compound
An IV of distilled (pure) water could be dangerous, even deadly to a person. Explain this in terms of the
GIF. Be detailed.
An IV of distilled (pure) water can be dangerous because it disrupts the body's osmotic balance, causing cells to swell and potentially burst due to water moving into them from the bloodstream, leading to cell damage or death. Additionally, it can dilute blood electrolytes, resulting in a life-threatening condition called hyponatremia, with symptoms like nausea, confusion, seizures, and even coma or death.
As a result, the distilled water will have a much lower solute concentration compared to the surrounding cells and blood. According to the principles of osmosis, water molecules will move from an area of lower solute concentration (the bloodstream) to an area of higher solute concentration (inside cells). This influx of water into cells can cause them to swell and potentially burst, leading to cell damage or death.Furthermore, this sudden influx of water into the bloodstream can dilute the electrolytes in the blood, leading to a condition called hyponatremia, which can be life-threatening. Symptoms of hyponatremia include nausea, vomiting, confusion, seizures, and, in severe cases, coma and death.In summary, introducing pure distilled water into the bloodstream disrupts the body's osmotic balance, leading to cell damage and potentially fatal electrolyte imbalances. This is why medical professionals always use specially formulated IV solutions with the appropriate solute concentrations to maintain the body's equilibrium.For more such questions on water
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The equation below shows the products formed when a solution of silver nitrate (AgNO3) reacts with a solution of sodium chloride (NaCl).
AgNO3 + NaCl → NaNO3 + AgCl
(Reactants) → (Products)
In this equation, the total mass of the reactants is
A) equal to the mass of AgCl.
B) less than the mass of AgCl.
C) equal to the total mass of the products.
D) greater than the total mass of the products.
The total mass of the reactants in the reaction between silver nitrate and sodium chloride is equal to the total mass of the products, demonstrating the law of conservation of mass. Option C is correct.
The law of conservation of mass as it applies to the reaction between silver nitrate (AgNO₃) and sodium chloride (NaCl). The reaction equation is:
AgNO₃ (aq) + NaCl (aq) → AgCl (s) + NaNO₃ (aq)
According to the law of conservation of mass, the total mass of the reactants will always be equal to the total mass of the products. This is because during a chemical reaction, matter is neither created nor destroyed, it is simply rearranged.
Thus, if the reaction starts with a certain mass of silver nitrate and sodium chloride, these will rearrange to form the same total mass of silver chloride and sodium nitrate.
Therefore, the correct answer is C.
According to gay-lussac’s law if the temperature of has increases what happens to the pressure
According Gay-Lussac's law, if the temperature of has increases, the pressure of the gas increases.
Gay-Lussac's lawGay-Lussac's law states that, as long as the volume of the container containing the gas is constant, as the temperature increases, the gas molecules move faster. Then the number of shocks against the walls increases, that is, the pressure increases. That is, the pressure of the gas is directly proportional to its temperature.
SummaryWhen there is a constant volume, with increasing temperature, the pressure of the gas increases. And when the temperature is decreased, gas pressure decreases.
Finally, if the temperature of has increases, the pressure of the gas increases.
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Gay-Lussac's law, or Amontons's law, explains that the pressure of a gas increases with its temperature if its volume remains constant. This is due to increased kinetic energy leading to stronger, more frequent collisions against container walls.
Explanation:Gay-Lussac's law, also known as Amontons's law, asserts the relationship between pressure and temperature in a gas, holding volume constant.
If the temperature of a gas is increased, the pressure increases
as a result. This increase is due to the gas molecules having greater kinetic energy, leading to faster speeds and more forceful collisions against the container walls. These more frequent and powerful collisions raise the pressure.
Gay-Lussac's law, mathematically, can be written as P proportional to T or P = constant × T
, where P is pressure, T is temperature, and the gas volume is constant. Conversely, Charles's law explains that if we allow the volume to adjust (not held constant), the pressure may maintain constant even with increased temperature.
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A pressure cooker contains 0.355 mole of air, which occupies a volume of 5.68 liters. The temperature inside the pressure cooker is 394 K. What is the absolute pressure of the air in the pressure cooker? The pressure of the air is pascals.
Answer:
The pressure of air is 204848.75 pascal.
Explanation:
Given data:
Moles of air = 0.355 mole
Volume of air = 5.68 L
Temperature = 394 K
Solution:
We will solve this problem by using ideal gas equation i.e.
PV = nRT
R is the ideal gas constant = 0.0821 L. atm / mol.K
Now we will put the values in equation,
PV = nRT
P = nRT / V
P = (0.335 mol × 0.0821 L. atm / mol.K × 394 K ) / 5.68 L
P = 11.483 L . atm / 5.68 L
P = 2.0217 atm
Now we will convert the atm into pascal.
1 atm = 101325 pa
2.0217 × 101325 = 204848.75 pa
Answer:
The problem can be solved using Ideal gas Equation
PV = nRT
P = Pressure in atm (can be converted to pascals)
V = Volume in Liters
N stands number of moles
R is the gas constant 0.08206 L atm [tex]K^{-1} mol^{-1}[/tex]
T is the temperature in kelvin
[tex]$P=\frac{n R T}{V}=\frac{0.355 \mathrm{mol} \times 0.08206 \mathrm{LatmK}^{-1} \mathrm{mol}^{-1} \times 394 \mathrm{K}}{5.68 \mathrm{L}} $$P=2.021 \mathrm{atm} $[/tex]
We know 1 atm = 101.325 kilo pascals = 101325 pascals
[tex]$2.021 {atm} \times \frac{101325 \text { ascals }}{1 \text { atm }}=204750 \text { Pascals } $$=2.05 \times 10^{5} \text { Pascals (Answer) } $[/tex]