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## What is the pressure of the gas in this mercury manometer if h = 83 mm and atmospheric pressure is 769 mmhg?

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The total pressure of a gas is equal to the sum of the gauge pressure and the atmospheric pressure. The gauge pressure is the pressure measured in a device. In this case, it will be the pressure measure from the mercury manometer. The atmospheric pressure is the pressure of the surroundings and it is given as 769 mmHg. We need to calculate the gauge pressure from the product of the density of the fluid in the manometer, the gravitational acceleration and the height displacement of the fluid. However, for this case, we need the pressure to be in units of mmHg so the pressure would be just equal to the pressure head in units of mm. We do as follows:

Pg = 83 mmHg
Pa = 769 mmHg
Pt = 83 + 769 = 852 mmHg

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## Under adolf hitler, the nazis developed a carefully planned network of concentration camps. these were designed to hold all those deemed undesirable by the nazi leadership. an individual consigned to a camp was forced to work, given a specific uniform that was the same as all other prisoners, given a limited ration of food, no access to amenities, and faced a near certain death by poison gas. this tragic episode in human history is an extreme example of

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Under adolf hitler, the nazis developed a carefully planned network of concentration camps. these were designed to hold all those deemed undesirable by the nazi leadership. an individual consigned to a camp was forced to work, given a specific uniform that was the same as all other prisoners, given a limited ration of food, no access to amenities, and faced a near certain death by poison gas. this tragic episode in human history is an extreme example of

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## A sample of gas occupies 7.80 liters at 425°C? What will be the volume of the gas at 35°C if the pressure does not change? 4.65 liters 3.65 liters 3.44 liters 7.65 liters 5.89 liters

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A sample of gas occupies 7.80 liters at 425°C? What will be the volume of the gas at 35°C if the pressure does not change? 4.65 liters 3.65 liters 3.44 liters 7.65 liters 5.89 liters

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## Two presidential candidates in a televised debate were asked to state their qualifications. Candidate Barry Smithers replied, "I am well qualified for the position of president of this great land. I have worked hard to ensure that voters' concerns were heard, and their voice was unanimous: We need more jobs and a cleaner environment. I have a vision that this nation can come together to accomplish these goals." Candidate Joe O'Neal answered, "I have a record of experience that makes me well qualified for the role of president, as shown by my term as governor and my 20 years of service in the U.S. Senate. I voted for a bill that has created jobs by building and repairing public roads and buildings. I have voted to ensure cars were manufactured to reduce greenhouse gas emissions." Which of the candidates has presented a stronger demonstration of his or her qualifications, and why? Candidate Barry Smithers, because he listens to the concerns of voters, unlike his opponent Candidate Joe O'Neal, because he stated evidence of his service record, unlike his opponent Candidate Barry Smithers, because he says he has a vision for success that his opponent lacks Candidate Joe O'Neal, because he believes in creating more jobs, in contrast to his opponent

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Two presidential candidates in a televised debate were asked to state their qualifications. Candidate Barry Smithers replied, “I am well qualified for the position of president of this great land. I have worked hard to ensure that voters’ concerns were heard, and their voice was unanimous: We need more jobs and a cleaner environment. I have a vision that this nation can come together to accomplish these goals.” Candidate Joe O’Neal answered, “I have a record of experience that makes me well qualified for the role of president, as shown by my term as governor and my 20 years of service in the U.S. Senate. I voted for a bill that has created jobs by building and repairing public roads and buildings. I have voted to ensure cars were manufactured to reduce greenhouse gas emissions.” Which of the candidates has presented a stronger demonstration of his or her qualifications, and why? Candidate Barry Smithers, because he listens to the concerns of voters, unlike his opponent Candidate Joe O’Neal, because he stated evidence of his service record, unlike his opponent Candidate Barry Smithers, because he says he has a vision for success that his opponent lacks Candidate Joe O’Neal, because he believes in creating more jobs, in contrast to his opponent

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## In the combined gas law, if the pressure in the system is increased, what happens to the volume if temperature remains constant?

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In the combined gas law, if the pressure in the system is increased, what happens to the volume if temperature remains constant?

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## WILL GIVE BRAINLIEST PLEASE HELP Which statement is true? Spiral and elliptical galaxies have gas and dust between stars while irregular galaxies do not. Spiral and irregular galaxies have gas and dust between stars while elliptical galaxies do not. Irregular galaxies have gas and dust between stars while elliptical and spiral galaxies do not. Elliptical galaxies have gas and dust between stars while irregular and spiral galaxies do not.

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### Answered by answersmine AT 22/10/2019 – 03:11 AM

Irregular galaxies may contain abundant amounts of gas and dust. Elliptical galaxies, have very little gas and dust. Because gas and dust are found in the clouds that are the birthplaces of stars, we should expect to see very few young stars in elliptical galaxies. Spiral galaxies are much younger but contain lots of small celestial bodies and floating matter.

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## Select all that apply. Which of the following statements are true? A solid can diffuse into a liquid, but a solid cannot diffuse into another solid. A solid can diffuse into both a liquid and another solid. A liquid can diffuse into another liquid. A gas can diffuse into another gas.

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Select all that apply. Which of the following statements are true? A solid can diffuse into a liquid, but a solid cannot diffuse into another solid. A solid can diffuse into both a liquid and another solid. A liquid can diffuse into another liquid. A gas can diffuse into another gas.

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## Caused by natural sources,such as dus and smoke, and human sources, such as gas powered cars and trucks

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Caused by natural sources,such as dus and smoke, and human sources, such as gas powered cars and trucks

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## If 5.0 liters of carbon dioxide gas are produced by the reaction below at STP, how many liters of oxygen gas were used in the reaction? 2CO (g) + O2 (g) yields 2CO2 (g) 10.0 L 7.5 L 5.0 L 2.5 L

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If 5.0 liters of carbon dioxide gas are produced by the reaction below at STP, how many liters of oxygen gas were used in the reaction? 2CO (g) + O2 (g) yields 2CO2 (g) 10.0 L 7.5 L 5.0 L 2.5 L

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## HELP PLEASE! 3 SCIENCE QUESTIONS! I'm stuck on my last 3. #1 Compare and contrast chemical change and physical change. #2 Compare and contrast a gas and a plasma. #3 What state of matter has the electrons separated from the nuclei of the atoms? Gas Solid Liquid Plasma

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HELP PLEASE! 3 SCIENCE QUESTIONS! I’m stuck on my last 3. #1 Compare and contrast chemical change and physical change. #2 Compare and contrast a gas and a plasma. #3 What state of matter has the electrons separated from the nuclei of the atoms? Gas Solid Liquid Plasma

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## #1 Compare and contrast chemical change and physical change. #2 Compare and contrast a gas and a plasma.

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### Answered by answersmine AT 22/10/2019 – 03:27 AM

In a physical reaction, no bonds are broken, and the reaction can be reversed mechanically, while in a physical reaction, two or more substances are combined, and bonds are broken to form completely new substances. Plasma is basically just super-heated gas.

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## At which stage does a gas form in a gas formation reaction

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At which stage does a gas form in a gas formation reaction

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## Which of the following is a renewable resource A. Copper B. Aluminum C. Peanut Oil D. Natural Gas

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Peanut Oil is an example of a renewable resource.

## Further Explanation

• Available resources in nature can be classified into renewable resources and non-renewable resources.

### Renewable resources

• These are energy sources that are replenished naturally within short periods of time.
• Renewable resources are more convenient and desirable to use because they renew faster and therefore there is continuous regeneration with use.
• Renewable resources are therefore, inexhaustible as they cannot be exhausted permanently as they are continuously supplied by nature.
• Examples of renewable resources include; wind, solar, water, biomass and geothermal.
• Solar energy is a renewable resource as the sun will shine through out. Wind energy is another renewable resource as wind cannot be stopped from blowing.
• Geothermal energy is also a renewable energy that generates heat from the earth. Other examples of renewable resources include bio-fuels, fuels that are obtained from living organisms.

### Nonrenewable resources.

• These are resources that are available only in limited supply.
• Nonrenewable resources include; coal, natural gas, oil, and nuclear power.
• Nonrenewable cannot be replenished like renewable resources and are exhaustible as they are not continuously replenished by nature.
• Nonrenewable resources are scarce resources and are not abundantly available in nature. Additionally, they are costly and not easily available.
• Despite the importance use of nonrenewable resources, they have various negative impact on the environment, such that they pollute the atmosphere by releasing various pollutants in air when burned.

Keywords: Resources, renewable resources, nonrenewable resources

### Learn more about

Level: High school

Subject: History

Topic: Renewable and nonrenewable resources

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## What is the Noble gas notation of sulfur (S)?

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Answer:

The noble gas it is [Ne]

Explanation:

the noble gas notations are the electronic configuration of an element ( the amount of electrons that this element has ) but using as a reference the electronic configuration of the last noble gas of the previous Row.

In the case of sulphur we know that S has 16 electrons so the normal configurations would be until here this is the configuration of Ne that it is the previous noble gas before S.

So, instead of writing again the whole configuration we just write [Ne] and the rest of the configuration () to complete the number of electrons.

Another example is Mg where using noble gas notation its electronic configuration will be: [Ne]

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## What mass of manganese(II) chloride must react with sulfuric acid to release 48.5 mL of hydrogen chloride gas at STP? MnCl2(s)+H2SO4(aq)→MnSO4(aq)+2HCl(g)

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Note that one mole of any gas at STP occupies 22.4 L of volume. We may use this to calculate the moles of hydrogen chloride gas that need to be produced. This is:
0.0485 / 22.4
0.002 mol

Next, we see that the molar ratio between manganese chloride and hydrogen chloride in the equation is:
1 : 2

So the moles of manganese chloride reacting will be:
0.002 / 2 = 0.001 mol

The molecular mass of manganese chloride is 126 g/mol. The mass reacting will be:
0.001 * 126

0.126 grams of manganese (II) chloride will react.

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## When hydrochloric acid reacts with sodium sulfide, hydrogen sulfide gas and sodium chloride are produced. How many moles of H2S will be generated by 2.56 moles of HCl? 2HCl + Na2S → H2S + 2NaCl A 10 liters B 0.1 liters C 40 liters D 20 liters

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When hydrochloric acid reacts with sodium sulfide, hydrogen sulfide gas and sodium chloride are produced. How many moles of H2S will be generated by 2.56 moles of HCl? 2HCl + Na2S → H2S + 2NaCl A 10 liters B 0.1 liters C 40 liters D 20 liters

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## 8. An online bank statement reads as follows: Account balance: \$986.24 Car payment: \$203.34 Gas bill: \$96.67 Check deposit: \$1289.60 Cash deposit: \$45 Debit card transaction: \$67.12 ATM withdrawal: \$30 Find the current account balance to date. A. \$937.47 B. \$1,726.52 C. \$1,555.33 D. \$1,923.71

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Starting balance : 986.24

deductions :
car payment : 203.34
gas bill : 96.67
debit card : 67.12
ATM : 30
total deductions : 203.34 + 96.67 + 67.12 + 30 = 397.13

deposits :
check : 1289.60
cash : 45
total deposits : 1289.60 + 45 = 1334.60

Balance to date : 986.24 + 1334.6 – 397.13 = 1923.71 <==

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## What is the particle unit for chlorine gas?

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### Answered by answersmine AT 22/10/2019 – 04:21 AM

The particle unit of a chlorine gas would be Cl2. It is a diatomic molecule which means that it would exist as a molecule consisting two atoms of different or the same elements. In nature, chlorine gas cannot be readily found or obtained. It can be obtained as a by-product or the main product in chemical reactions. It can be obtained from the electrolytic process of sodium chloride resulting to the production of chlorine gas, NaOH and hydrogen gas where all of the products are highly reactive. Chlorine gas is a very toxic substance to living organisms when present in the body.

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## How many moles of oxygen are in 52.5 grams of oxygen gas?

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An oxygen gas is a diatomic molecule which means that each molecule is composed of 2 atoms. Its symbol is O2.

Each oxygen atom has a molar mass of 16 g/mol. The molar mass of oxygen gas is calculated below,
molar mass = 2 x (16 g/mol) = 32 g/mol

To determine the number of moles in 52.5 grams of oxygen, divide the given mass by the calculated molar mass.

n = 52.5 grams / (32 gram/ mol)
n = 1.64 moles

Thus, there are 1.64 moles of oxygen gas.

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## A gas is located inside a closed container. if the gas is allowed to occupy more volume inside the container, what will happen to the pressure? (note: there is no gas added to the container.)

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A gas is located inside a closed container. if the gas is allowed to occupy more volume inside the container, what will happen to the pressure? (note: there is no gas added to the container.)

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## A sample of carbon dioxide gas, co2 (g), occupies a volume of 5.75 l at 0.890 atm. if the temperature and the number of moles remain constant, calculate the volume when the pressure a. increased to 1.25 atm b. decrease to 0.350 atm

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According to Boyle’s law;
P1V1 = P2V2
P1 is the pressure of the gas in the first case.
V1 is the volume of the gas in the first case.
P2 is the pressure of the gas in the second case.
V2 is the volume of the gas in the second case.

P1 = 0.890 atm, V1 = 5.75l

a. P2 = 1.25 atm,
0.890*5.75 = 1.25*V2
V2 = 4.094 l

b. P2 = 0.350 atm,
0.890*5.75 = 0.350*V2
V2 = 14.621 l.

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## A gas sample is heated from -20.0°c to 57.0°c and the volume is increased from 2.00 l to 4.50 l. if the initial pressure is 0.140 atm, what is the final pressure

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A gas sample is heated from -20.0°c to 57.0°c and the volume is increased from 2.00 l to 4.50 l. if the initial pressure is 0.140 atm, what is the final pressure

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## A gas has a volume of 25 ml at a pressure of 100 kpa. what will the new volume of the gas be at a pressure of 150 kpa if the temperature remains constant?

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This problem is to apply Roult’s Law.

Roult’s Law states that the vapor pressure, p, of a solution of a non-volatile solute is equal to the vapor pressure of the pure solvent, Po solv, times the mole fraction of the solvent, Xsolv

p = Xsolv * Po sol

X solv = number of moles of solvent / number of moles of solution

The solvent is water and the solute (not volatile) is glycerin.

Number of moles = mass in grams / molar mass

mass of water = 132 ml * 1 g/ml = 132 g

molar mass of water = 18 g/mol

=> number of moles of water = 132 g / 18 g/mol = 7.33333 mol

mass of glycerin = 27.2 g

molar mass of glycerin:, C3H8O3: 3 * 12 g/mol + 8 * 1 g/mol + 3*16 g/mol = 92 g/mol

number of moles of glycerin = 27.2g / 92 g/mol = 0.29565

total number of moles = 7.33333 moles + 0.29565 moles = 7.62898 moles

=> X solv = 7.33333 / 7.62898 = 0.96125

=> p = 0.96125 * 31.8 torr ≈ 30.57 torr ≈ 30.6 torr.

Answer: 30.6 torr

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## An oxygen bottle containing a fixed volume of o2 gas has a pressure of 800.00 mm hg and a temperature of 295k. if the bottle is heated to 328k what will the pressure of o2 gas be within the bottle and which law will you use to solve it?

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The equation for how temperature changes the resistance R is:

R=R₀(1+α(T-T₀)), where R₀ is the resistance at T₀=20°C, T is the temperature for which we want to calculate the resistance and α is the temperature coefficient for resistance.

The resistance of the copper wire increases by 18% or by 0.18, so the new value for the resistance is R=1.18*R₀.

T₀=20°C
=0.0068
R=1.18*R₀

Now we need to input that into the equation for resistance change and solve for temperature T.

1.18R₀=R₀(1+α(T-20)), R₀ cancels out,

1.18=1+α(T-20),

1.18-1=α(T-20), we divide by α,

0.18/α=T-20, we put 20 on the left side,

26.47+20=T

T=46.47°C

So the temperature on which the resistance of copper wire will increase by 18% is T=46.47°C.

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## A gas with a volume of 4.0 liters at a pressure of 205 kilopascals is allowed to expand to a volume of 12.0 liters. What will the pressure in the container be if the temperature remains constant?

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This problem is to apply Roult’s Law.

Roult’s Law states that the vapor pressure, p, of a solution of a non-volatile solute is equal to the vapor pressure of the pure solvent, Po solv, times the mole fraction of the solvent, Xsolv

p = Xsolv * Po sol

X solv = number of moles of solvent / number of moles of solution

The solvent is water and the solute (not volatile) is glycerin.

Number of moles = mass in grams / molar mass

mass of water = 132 ml * 1 g/ml = 132 g

molar mass of water = 18 g/mol

=> number of moles of water = 132 g / 18 g/mol = 7.33333 mol

mass of glycerin = 27.2 g

molar mass of glycerin:, C3H8O3: 3 * 12 g/mol + 8 * 1 g/mol + 3*16 g/mol = 92 g/mol

number of moles of glycerin = 27.2g / 92 g/mol = 0.29565

total number of moles = 7.33333 moles + 0.29565 moles = 7.62898 moles

=> X solv = 7.33333 / 7.62898 = 0.96125

=> p = 0.96125 * 31.8 torr ≈ 30.57 torr ≈ 30.6 torr.

Answer: 30.6 torr

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