Answer:
We will use ideal gas equation in this problem
PV = nRT
Where
P = pressure of gas or air = ?
V = volume of air = volume of pressure cooker = 5.68 L
T = temperature = 394 K
n = moles of air = 0.355
R = ideal gas equation = 0.0821 L atm / mol K
Putting values
Pressure = nRT / V = 0.355 X 0.0821 X 394 / 5.68 = 2.02 atm.
What is occurring to the butane molecule to form a molecule of carbon dioxide
Answer:
chlorine gas and oxygen
What other objects are often arranged by their properties
Answer:
Metaloids and metals.
hi:) i need help with q17. Thanks in advance:)
Answer:
Q17. D
Explanation:
A single line between 2 atoms represent a single covalent bond between a pair of electrons. There are 17 lines in the diagram hence there are 17 bonding pairs of electrons in the molecule.
Do count the double bond as 2 bonding pairs of electrons.
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What resource is often compromised due to mining?
Answer:
Coal mining can compromised a lot of our resources one of it is the soil. It is because it eliminates the nutrients of the soil that can affect the vegetation, it destroys the wildlife and habitat. Also, it changes permanently the topography of the area mined.
Explanation:
edge 2020 just did it
One resource that is often compromised due to mining is water, as mining have significant effect on quality and quantity of water.
Resources are anything that can be used to satisfy a need or want. Resources can be natural, such as land, water, minerals, and wildlife, or they can be human made, such as tools, machines, buildings, and infrastructure.
Mining activities can have significant impacts on water quality and quantity, especially in areas with limited water resources or sensitive ecosystems.
Water can become contaminated by chemicals and heavy metals used in mining, such as cyanide, sulfuric acid, and mercury, which can have harmful effects on aquatic life and human health. Mining can also consume large amounts of water for processing and dust suppression, which can exacerbate water scarcity and competition with other users, such as agriculture and urban areas.
Therefore, mining can have significant impacts on water resources, which are essential for human health, ecosystem functioning, and economic development.
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which of the following views of weather is an example of systems thinking
Answer:
Explanation:
Climate
1. Determine the acid type for HBr.
O Brønsted-Lowry
O Ahrrenius
O Lewis
not a base
Answer:
Bronsted-Lowry
Explanation:
brainliest please ?
How many chlorine atoms are on the products side of the reaction 2Al + 6HCl → 2AlCl3 + 3H2?
Answer:
6
Explanation:
According to the balanced chemical equation, there are six chlorine atoms on the product side.
What is chemical equation?Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.
A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .
The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.
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A scientist collects 0.24 mole of hydrogen gas in a balloon. The temperature of the hydrogen is 35 degrees Celsius, and the pressure in the balloon is 1.05 atmospheres. what is the volume of the balloon? the volume of the balloon is_ liters. Express your answer to two significant figures.
Answer:
5.77 L
Solution:
Data Given:
Moles = n = 0.24 mol
Temperature = T = 35 °C + 273 = 308 K
Pressure = P = 1.05 atm
Volume = V = ?
Formula Used:
Let's assume that the hydrogen gas in balloon is acting as an Ideal gas, the according to Ideal Gas Equation,
P V = n R T
where; R = Universal Gas Constant = 0.082057 atm.L.mol⁻¹.K⁻¹
Solving Equation for V,
V = n R T / P
Putting Values,
V = (0.24 mol × 0.082057 atm.L.mol⁻¹.K⁻¹ × 308 K) ÷ 1.05 atm
V = 5.77 L
Based on the equation below, how many moles of aluminum sulfate (Al2(SO4)3) will be produced from the reaction of 5.8 moles of aluminum hydroxide (Al(OH)3) and excess sulfuric acid (H2SO4)?
2Al(OH)3 + 3H2SO4 → Al2(SO4)3 + 6H2O
A. 2.9 moles of aluminum sulfate
B. 3.9moles of aluminum sulfate
C. 5.8 moles of aluminum sulfate
D. 11.6 moles of aluminum sulfate
Answer:
a is the correct answer
Explanation:
i just did this question and it said a was right
The number of moles of aluminum sulfate produced from the 5.8 moles of aluminum hydroxide and excess sulfuric acid is 2.9 moles.
The balanced chemical equation can be given as:
2 Al(OH)₃ + 3 H₂SO₄ [tex]\rightarrow[/tex] Al₂(SO₄)₃ + 6 H₂O
In the above reaction, the stoichiometry of the amounts of each compound participating in the reaction is:
Al(OH)₃ - 2 moles
H₂SO₄ - 3 moles
Al₂(SO₄)₃ - 1 mole
H₂O - 6 moles
From the above observation, it can be assumed that for every 2 moles of aluminum hydroxide produce 1 mole of aluminum sulfate.
Then, the number of moles produced by 5.8 moles of aluminum hydroxide is x.
[tex]\text{moles of Al}_{2} (\text{SO}_{4} ){3} =\dfrac{\text{5.8moles of Al(OH)}_{3} \times \text {1 mole of Al}_{2} (\text {SO}_{4} ){3}}{\text {2moles of Al(OH)}_{3}}[/tex]
Thus, 2.9 moles of aluminum hydroxide will be produced from the 5.8 moles of aluminum hydroxide.
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She found that the electromagnet picked up the entire pile of paper clips the instant she turned it on. Which of the following might allow Charlotte's electromagnet to pick up a single paper clip at a time? A. increasing the distance between the electromagnet and the paper clips B. increasing the number of batteries supplying voltage to the electromagnet C. increasing the number of loops in the electromagnet's coil D. removing the iron nail from the core of the electromagnet
Answer:
Increasing the distance
Explanation:
I dont know if this is right but i think it is since the magnets works at a distance so moving it away is the answer i think.
Answer:
it D and A
Explanation:
I solved this on study island before
Convert 765 torr to atm
Answer:
1.00658 atm
Explanation:
765 torr is equal to 1.0079 atm using the conversion factor: 1 atm = 760 torr.
Pressure can be measured in various units depending on the system of measurement being used. Some common units of pressure include:
Atmosphere (atm)Pascal (Pa)Kilopascal (kPa)Millimeter of Mercury (mmHg or torr)Bar (bar)Pound per square inch (psi)Newton per square meter (N/m²)Each unit of pressure has its specific conversion factors to other units. For example, 1 atm is approximately equal to 101.325 kPa or 760 mmHg. It's essential to use the appropriate unit for the specific application and to ensure consistency when comparing or converting pressure measurements.
The conversion factor:
1 atm = 760 torr.
765 torr ÷ 760 torr/atm = 1.0079 atm
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A student was given four unknown solutions each was checked for conductivity and tested with phenolphthalein the results below
Based on data in table which unknown solution could be 0.1M NaOH
The solution which could be with 0.1 M NaOH is solution "C"
Explanation:
I have attached the snapshot of the table for the reference.Based on the data from the table, the solution which could be in the 0.1 M of NaOH will be the solution "c" the conductivity is good and the colour with the Phenolphthalein..Since the NaOH pH value is always greater than seven.And the chemical solution NaOH is based in nature when it is dissolved in nature separates into Na+ and OH- ions. NaOH is always a strong base because it completely divides in water to yield hydroxide ions.
Before a Bill can move to "floor consideration" in the General Assembly, it must first pass through
Answer:I believe it is the Senate
Explanation:
Answer:
C) committee consideration.
Explanation:
Have a nice day :)
A 50 gram object with a specific heat of 0.3825 J/g*C releases 4593 joules of heat.
If the initial temperature was 235.16C, calculate the final temperature.
Answer:
475.26°C
Explanation:
Given parameters:
Mass of object = 50g
Specific heat = 0.3825J/g°C
Quantity of heat = 4593Joules
Initial temperature = 235.16°C
Unknown:
Final temperature = ?
Solution:
The quantity of heat absorbed by a body is a function of the mass, specific heat capacity and temperature change the body undergoes.
Mathematically, this relationship is given as;
H = m c Ф
where H is the quantity of heat
m is the mass of the body
c is the specific heat capacity
Ф is the temperature difference
Ф = final temperature - initial temperature
Since we are solving for final temperature, let us substitute for other given parameters;
H = m c ( final temperature - initial temperature)
4593 = 50 x 0.3825 x (F - 235.16)
F - 235.16 = 240.1
F = 240.1 + 235.16 = 475.26°C
Many organisms in Kingdom Fungi grow best in warm, moist conditions.
Which other characteristic is common to organisms in Kingdom Fungi?
Answer:
Kingdom Fungi refers to the group of eukaryotic organisms like fungi, mushrooms, molds and yeasts.
Explanation:
The fungi kingdom is made up of eukaryotic organisms whose cell walls are made of chitin.
Next I will name some characteristics of these organisms:
They are not plants or animals .They are responsible for absorbing nutrients from other organisms, which they use as food .Some, like mushrooms and yeast, are edible. They present cellular orguils and vacuoles .They lack chloroplasts .They produce spores .They are able to break down dead matter .They develop in humid and dark areas .Penicillin is obtained from these organisms.Answer:
sorry but i need the ptsm because I only have ten
Explanation:
Elements are arranged left to right, top to bottom, from smallest to largest, by ____________ _____________ .
Answer: increasing atomic number
Explanation: Elements are arranged left to right, top to bottom, from smallest to largest, of increasing atomic number.
Hi:) for questions 8 & 9 , anyone able to explain why nitrogen is N2 instead of N. also why is chlorine cl2 instead of c1? Thank you!
Answer:
Because both of them are Diatomic molecules.
Explanation:
What are the negative impacts global warming has on coastal communities?
Answer:
Climate change can affect coastal areas in a variety of ways
Explanation:
Final answer:
Global warming leads to sea level rise and extreme weather, threatening coastal communities with flooding, erosion, loss of habitat, and freshwater scarcity. Infrastructure must adapt, but preventive action, including reducing greenhouse gas emissions, is essential.
Explanation:
The negative impacts of global warming on coastal communities are profound and long-lasting. With current sea levels rising by approximately 0.25 meters, coastal cities face increased vulnerability to storm surges, which are exacerbated by high tides and heavy waves during storms. This not only threatens human structures but also contributes to the loss of biodiversity as ecosystems are disrupted. Furthermore, as the planet warms, polar ice caps and glaciers continue to melt, leading to a predicted rise in sea levels of two to four feet by 2100. This would result in widespread inundation of shorelines, reduction of island sizes, and possible disappearance of some islands. The alteration in the freeze-thaw cycle of the poles and glaciers may also lead to a lack of freshwater resources and an abundance of saltwater.
Changing patterns of precipitation due to climate change will require reconstruction of water management and food production infrastructures, with further impacts on ecosystems. The changing water flows can lead to the clearing of new areas for agriculture, road construction, and other developments, potentially impacting natural habitats and leading to a shift in biodiversity. Additionally, warming could introduce new economic activities in previously inaccessible Arctic regions, inevitably leading to further environmental degradation through infrastructure development.
Please help me out, picture attached
Answer:
the number of atoms in the product is the same as the number of atoms in the reactant
Explanation:
In the product, there are a total of 10 atoms, whereas in the reactant, there are also a total of 10 atoms, the number of atoms in the product is the same as the number of atoms in the reactant.
At which temperature would an object radiate the least amount of electromagnetic energy?
1the boiling point of water (100°C)
2the temperature at the stratopause (0°C)
3the temperature of the North Pole on December 21 (-60°F)
4room temperature (293 K)
At the temperature of the North Pole on December 21 (-60°F) an object radiates the least amount of electromagnetic energy.
What are electromagnetic radiations?Electromagnetic radiation consists of waves of the electromagnetic field, which pass through space and carry radiant energy. It involves microwaves, radio waves, infrared, visible light, UV radiation, X-rays, and gamma rays.
Electromagnetic radiation exhibit electromagnetic waves, which oscillate with the electric as well as magnetic fields. Electromagnetic waves are generated due to periodic motion in the electric field or magnetic field.
Depending on the periodic change in these waves that happens and the power formed, different wavelengths of the electromagnetic spectrum are generated. The effects of electromagnetic radiation on chemical compounds and biological organisms depend on the power of electromagnetic radiation and its frequency.
In order of increasing frequency of radiations and decreasing wavelength of radiations, these waves are arranged in the electromagnetic spectrum.
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What is hexaboron monosilicide formula
The molecular formula for hexaboron monosilicide is B6Si, which indicates the compound contains six boron atoms and one silicon atom.
Explanation:The hexaboron monosilicide formula is B6Si. This formula denotes that there are six atoms of boron (B) and one atom of silicon (Si) in a molecule of hexaboron monosilicide.
It is identified as hexaboron because of the prefix 'hexa-' which signifies six in chemical nomenclature, referring to the six boron atoms. Similarly, the use of 'mono-' in monosilicide represents one silicon atom.
This compound exists in crystalline form as a superhard material, and is often studied in the field of material science.
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True or false : A glacier can only form in an area where more snown falls than melts
Answer:
True
Explanation:
Glaciers are form when the snow is melted and starts to run down the lake or in form of water making it the glacier.
Answer:true
Explanation: graciers need to move
What type of plate motion (together, apart, or sliding) has occurred at the Himalayas?
which of Newton's laws state that an object's acceleration is directly related to the net force applied and inversly related to the mass
Jaką maksymalną ilość gramów azotanu (V) potasu można rozpuscic w 300g wody w temperaturze 90 C
Proszę o pomoc!!!
Answer:
609gExplanation:
The translated question is:
What maximum amount of grams of potassium nitrate (V) can be dissolved in 300g of water at 90 °C
Solution
To answer the question you need to consultate the solubiity information for potassium nitrate (V), KNO₃.
The attached table contains the solutibility table for KNO₃ at different temperatures.
At 90ºC it is 203g / 100g water.
Then, to calculate the maximum amount of grams of potassium nitrate (V) that can be dissolved in 300g of water at 90 °C, just multiply by the amount of water:
203g / 100g water × 300 g water = 609g ← answerIn a titration, 10.0 ml of 0.0750 M HCl(aq) is exactly neutralized by 30.0 ml of KOH(aq) of unknown concentration. What is the concentration of the KOH(aq)solution?
Answer: 0.0250
Explanation: 10 X 0.0750 = .75
.75 / 30 = 0.0250 M
The concentration of KOH(aq) solution is 0.025 M.
Explanation:In this titration, the volume and concentration of HCl(aq) are given as 10.0 ml and 0.0750 M, respectively. The volume of KOH(aq) is given as 30.0 ml. To find the concentration of KOH(aq) solution, we can use the concept of stoichiometry and the balanced equation for the reaction:
HCl(aq) + KOH(aq) → H2O(l) + KCl(aq)
From the balanced equation, we can see that the ratio of moles of HCl to KOH is 1:1. Therefore, the moles of KOH can be calculated as:
moles of KOH = moles of HCl = volume of HCl × concentration of HCl
Substituting the values:
moles of KOH = 10.0 ml × 0.0750 M = 0.750 mol
The concentration of KOH(aq) solution can be calculated using the moles of KOH and the volume of KOH(aq) solution:
concentration of KOH = moles of KOH / volume of KOH(aq)
Substituting the values:
concentration of KOH = 0.750 mol / 30.0 ml = 0.025 M
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A2.5 L sample of a solution of sea water has a NaCl concentration of 5.4
M. What is the new concentration of this solution if it is boiled down to a
volume of 1.0 L?
13.5 is the new concentration of this solution if it is boiled down to a
volume of 1.0 L.
Explanation:
Data given:
Initial volume of the solution of sea water = 2.5 litre
Molarity of NaCl solution M1 = 5.4 M
fInal volume = 1 litre
final molarity = ?
Assuming that no loss of NaCl from sea water took place when the sea water was boiled.
applying the formula for change in concentration as:
Minitial V initial = Mfinal X Vfinal
M final = [tex]\frac{M initial X V initial}{V final}[/tex]
Putting the values in the equation:
Mfinal = [tex]\frac{5.4 X 2.5}{1}[/tex]
M final = 13.5 M
thus it can be concluded that molarity will increase drastically when volume gets reduced from 2.5 litre to 1 litre. The solution becomes highly concentrated as water volume decreases due to evaporation.
The new concentration of a seawater solution initially at 5.4 M and 2.5 L volume, after boiling down to 1.0 L, is calculated to be 13.5 M using the principle of conservation of mass and the formula M1V1 = M2V2.
The question involves calculating the new concentration of a solution when its volume changes due to boiling. A 2.5 L sample of seawater with NaCl concentration of 5.4 M is reduced to 1.0 L after boiling. To find the new concentration, we use the principle of conservation of mass, which implies that the amount of solute (NaCl) remains constant even as the volume changes. Using the formula M1V1 = M2V2, where M1 and V1 are the initial concentration and volume, and M2 and V2 are the final concentration and volume, we can calculate the new concentration after boiling down to 1.0 L.
Initial information: M1 = 5.4 M, V1 = 2.5 L, V2 = 1.0 L.
Calculation: To find M2, rearrange the formula to M2 = (M1V1) / V2. Therefore, M2 = (5.4 M * 2.5 L) / 1.0 L = 13.5 M.
The new concentration of the NaCl solution after being boiled down to 1.0 L is 13.5 M. This demonstrates how the concentration of a solution increases as the volume decreases, provided no solute is added or removed.
1. Identify a conjugate acid-base pair in the reaction
NH3 + H2O + NH4+ + OH-
A. H20 and OH
B. NH3 and H20
C. NH3 and OH
D. H20 and NH4+
PLZ HELP WILL GIVE BRAINLIEST
Which three temperature readings all mean the same thing?
373 Kelvin, 100 degrees Celsius, 212 degrees Fahrenheit
273 Kelvin, 0 degrees Celsius, 212 degrees Fahrenheit
100 Kelvin, 0 degrees Celsius, 32 degrees Fahrenheit
273 Kelvin, 100 degrees Celsius, 212 degrees Fahrenheit
Answer:
The answer is A
Explanation:
I checked on a temperature converter calculator.
Answer:
100 Kelvin, 0 degrees Celsius, 32 degrees Fahrenheit.
Explanation:
Question 2
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Hydrochloric acid reacts faster with powdered zinc than with an equal mass of zinc strips because the greater the surface area of the powdered zinc
decreases the frequency of particle collisions
2.
decreases the activation energy of the reaction
increases the frequency of particle collisions
increases the activation energy of the reaction
There is an increase in the frequency of particle collisions which leads to the increased rate of the reaction.
Explanation:
Hydrochloric acid reacts faster with the powdered zinc than with the equal mass of zinc strips.
Since the surface area of the Zinc particle increases when it is powdered and has more active spots when compared to less number of active sites in Zinc strips and so the number of collision between the Zinc particles and the particles of Hydrochloric acid also increases and consequently the rate of the reaction also enhances.
So there is an increase in the frequency of particle collisions.