Answer:
9.03 x 10²³ atoms in the pennies
Explanation:
I suspect you want to find the number of atoms that makes up the given moles of the pennies:
Number of moles of pennies = 1.5 moles
Solution:
The mole can be defined as the amount of a substance that contains Avogadro's number of particles i.e 6.02 x 10²³atoms.
number of atoms = number of moles x 6.02 x 10²³ = 1.5 x 6.02 x 10²³
number of atoms = 9.03 x 10²³ atoms
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.
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
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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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:
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)
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
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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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
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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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
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.
the volume and amount of gas are constant in a tire. the initial pressure and temperature are 1.82 atm and 293k. at what temperature will the gas in the tire have a pressure of 2.35 atm?
Answer:
378k
Explanation:
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 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.
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]
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
An enzyme works best at 98.6°F.
The equation used to describe it requires the temperature to be in K.
please help asap
What is the correct temperature?
Use (F×0.555)+255.37=K or (K−255.37)×1.8=F .
37 K
236 K
310 K
482 K
Answer:
310.093K
Explanation:
Given parameters:
Temperature of the enzyme = 98.6°F
Unknown:
We are to convert the temperature from the fahrenheit scale to Kelvin scale:
Solution
Properly writing the equation given to solve the problem:
K = (F x 0.55) + 255.37
F = (K - 255.37) x 1.8
K stands for the temperature in kelvin and F is the temperature in fahrenheit.
The first equation would be a lot more easier to use:
K = (98.6 x 0.555) + 255.37 = 54.723 + 255.37 = 310.093K
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.
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 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.
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Question 6 of 28
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Which has greater kinetic energy: a bowling ball that has a mass of 5kg travelling at 6m/s or a ship that has a mass of
120000kg and is moving at 0.02m/s?
ship
bowling ball
Answer:
The answer to your question is: the bowling ball
Explanation:
Formula
Kinetic energy = (1/2)mv²
Data
Bowling ball
mass = 5 kg, v = 6 m/s
ship
mass = 120000 kg, v = 0.02 m/s
Substitution
bowling ball
Ke = (1/2)(5)(6)² = 90 Joules
Ship
Ke = (1/2)(120000)(0.02)² = 24 Joules
Fron the results, we conclude that the ball has greater kinetic energy than the Ship.
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.
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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.
A multi-nutrient fertilizer contains several different nitrogen containing compounds. The fertilizer is 54.8% CH4N2O (urea), 26.3% KNO3 , and 14.1% (NH4)2HPO4 by mass. The remainder of the fertilizer consists of substances that do not contain nitrogen. How much fertilizer should someone apply to provide 2.90 g N to a plant?
Approximately 7.80 g of this multi-nutrient fertilizer should be applied to provide 2.90 g of nitrogen to a plant, assuming the nitrogen is 100% available to the plants.
Explanation:To calculate the amount of fertilizer needed to provide 2.90 g of nitrogen, we need to know the nitrogen content in each component of the fertilizer. The nitrogen content of the compounds CH4N2O (urea), KNO3, and (NH4)2HPO4 is approximately 46.6%, 13.9%, and 21.2% respectively. Therefore, the total percentage of nitrogen in the fertilizer is ((0.548 * 46.6) + (0.263 * 13.9) + (0.141 * 21.2))/(0.548 + 0.263 + 0.141) = 37.2%.
To provide 2.90 g of nitrogen, we need to apply: 2.90 g / 0.372 = 7.80 g of fertilizer. This calculation assumes that the nitrogen in the fertilizer is 100% available to the plants, which may not be the case because plants require certain biochemical processes like nitrogen fixation to make nitrogen bioavailable.
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To provide 2.90 g of nitrogen (N) to a plant, you need to determine the amount of fertilizer required. The multi-nutrient fertilizer consists of urea, potassium nitrate, and ammonium phosphate. The total amount of fertilizer needed is 37.89 g.
Explanation:To provide 2.90 g of nitrogen (N) to a plant, you need to determine the amount of fertilizer required. From the given information, the multi-nutrient fertilizer is 54.8% urea (CH4N2O), 26.3% potassium nitrate (KNO3), and 14.1% ammonium phosphate [(NH4)2HPO4]. We can calculate the amount of each component needed to provide 2.90 g of N:
Urea: (2.90 g N) / (0.548 g N/g fertilizer) = 5.29 g fertilizerPotassium nitrate: (2.90 g N) / (0.263 g N/g fertilizer) = 11.03 g fertilizerAmmonium phosphate: (2.90 g N) / (0.141 g N/g fertilizer) = 20.57 g fertilizerTherefore, to provide 2.90 g of N, a total of 37.89 g of fertilizer is required.
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the kilocalories in one can of cola if it has 40. g of carbohydrate and no fat or
protein
Answer:
One can of cola contain 0.16 kcal of carbohydrates.
Explanation:
Given data:
mass of cola can = 40 g
kilocalories of carbohydrates = ?
Solution:
we know that there are 4 cal of carbohydrates per gram.
40 g × 4 cal/g = 160 cal
Now we will convert calories into kilocalories. There are 1000 calories in one kilocalories so,
160/1000 = 0.16 kcal
so, one can of cola contain 0.16 kcal of carbohydrates.
Final answer:
To calculate the kilocalories in a can of cola with 40 grams of carbohydrate, multiply the amount of carbohydrate by 4 kilocalories per gram. This results in 160 kilocalories.
Explanation:
The number of kilocalories in one can of cola can be calculated knowing that carbohydrates provide 4 kilocalories of energy per gram. Given that the cola has 40 grams of carbohydrate and no fat or protein, we can simply multiply the amount of carbohydrate by the energy it provides.
So, 40 grams of carbohydrate * 4 kilocalories/gram = 160 kilocalories.
This means that one can of cola, with its 40 grams of carbohydrates and no contribution from fat or protein to its energy content, provides a total of 160 kilocalories of energy.
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 statement implies that some ethanol supporters have changed their minds about the fuel?
Answer:
D. “Many people are disappointed in ethanol because they believed that it would help reduce the price at the pump, not increase it.”
Explanation:
Answer:
B.many people are disappointed in ethanol because they believed that it would help reduce the price at the pump, not increase it”
Explanation:
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.
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.
What is always true of an object with a lot of mass?
A)It contains a lot of matter incorrect answer
B)It has a large volume incorrect answer
C)It has a high-density incorrect answer
D)It cannot be accurately measured
Answer:
A) It contains a lot of matter.
An object with a lot of mass always has a lot of matter. This doesn't mean it necessarily has a large volume or high density, and it can be accurately measured.
Explanation:The statement that is always true of an object with a lot of mass is that it contains a lot of matter. Put simply, the mass of an object is a measure of how much matter the object contains. It's derived from the quantity of atoms and molecules within the object. Mass is different from volume, which is the amount of space an object occupies, and density, which is the ratio between mass and volume. Therefore, it's not necessarily true that an object with a lot of mass will also have a large volume or high density. The mass of an object can always be measured precisely, given the right tools. Therefore, it's incorrect to say an object with a lot of mass cannot be accurately measured.
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