Question 1

A sample of an unknown gas was isolated in a gas containment bulb on a manifold used in this type of work. The volume of the bulb was 1.425 liters. The temperature was 25.40 °C, and the manifold pressure was 583.0 torr. What volume would this gas sample occupy at STP?

Accepted Answer

The correct answer is A because the volume of the gas sample at STP can be calculated using the combined gas law:V1/T1 = V2/T2where V1 is the initial volume, T1 is the initial temperature, V2 is the final volume, and T2 is the final temperature.Plugging in the given values, we get:1.425 L / (25.40 °C + 273.15) = V2 / (0 °C + 273.15)Solving for V2, we get:V2 = 1.000 L

Question 2

A sample of a gas was isolated in a gas containment bulb on a manifold used in this type work. The volume of the bulb was 1.524 liters. The temperature was 28.40 °C, and the manifold pressure was 637.6 torr. What volume would this gas sample occupy at STP?

Accepted Answer

The answer of A sample of a gas was isolated...

Question 3

A sample of a gas was isolated in a gas containment chamber. The volume of the chamber was 1.245 cubic meters. The temperature was 22.80 °C, and the pressure was 88.26 kPa. What volume would this gas sample occupy at STP?

Accepted Answer

STP is defined as 0 °C and 101.325 kPa. Using the combined gas law, we can calculate the volume of the gas sample at STP:V1/T1P1 = V2/T2P2V2 = V1 * T2 * P1 / T1 * P2V2 = 1.245 m3 * 273.15 K * 88.26 kPa / 295.95 K * 101.325 kPaV2 = 1.001 m3

Question 4

A sample of a gas occupies a volume of 1.820 liters at STP. What pressure would it exert if transferred to a 1.425-liter vessel in which its temperature was raised to 25.2 °C?

Accepted Answer

Using the combined gas law: (P1 * V1) / T1 = (P2 * V2) / T2, where P1 = 1 atm, V1 = 1.820 L, T1 = 273.15 K, V2 = 1.425 L, T2 = 298.35 K. Solving for P2 gives approximately 1.395 atm.

Question 5

A sample of a gas occupies a volume of 185.5 mL at STP. What pressure would it exert if it was transferred to a gas bulb with a volume of 255.5 mL in which the temperature is maintained at 34.5 °C?

Accepted Answer

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Question 6

A sample of a gas occupies a volume of 185.5 mL at 20.2 °C and 0.945 atm. What pressure would it exert if it was transferred to a gas bulb with a volume of 255.5 mL in which the temperature is increased to 34.5 °C?

Accepted Answer

The answer of A sample of a gas occupies a...

Question 7

A sample of a gas occupies a volume of 1.462 liters at STP. It was placed in a different vessel in which the pressure was measured as 722.5 torr when the temperature was 25.20 °C. What is the volume of this new vessel?

Accepted Answer

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Question 8

A sample of a gas occupies a volume of 1.462 liters at 30.00°C and 1.250 atm. It was placed in a different vessel in which the pressure was measured as 722.5 torr when the temperature was 25.20 °C. What is the volume of this new vessel?

Accepted Answer

Using the combined gas law, (P1 * V1) / T1 = (P2 * V2) / T2, and converting all units to consistent ones, the volume of the new vessel is calculated to be approximately 1.892 liters.

Question 9

A sample of a gas occupies a volume of 1.462 liters at STP. It was placed in a different vessel with a volume of 1.601 liters, in which the pressure was measured as 722.0 torr. What is its temperature in this new vessel?

Accepted Answer

Using the ideal gas law and the given conditions, the temperature is calculated to be approximately 11.0 °C.

Question 10

A sample of a gas occupies a volume of 1.246 liters at STP. It was placed in a different vessel with a volume of 1.410 liters, in which the pressure was measured as 108.5 kPa. What is its temperature in this new vessel?

Accepted Answer

Using the ideal gas law and converting units, the temperature in the new vessel is calculated to be approximately 57.8 °C.

Question 11

A sample of a gas occupies a volume of 122.4 mL at STP. It was placed in a different vessel with a volume of 164.2 mL in which the pressure was measured as 0.9915 atm. What is its temperature in this new vessel?

Accepted Answer

The answer of A sample of a gas occupies a...

Question 12

A sample of a gas occupies a volume of 122.4 mL at 25°C and 1.45 atm. It was placed in a different vessel with a volume of 164.2 mL, in which the pressure was measured as 0.9915 atm. What is its temperature in this new vessel?

Accepted Answer

The answer of A sample of a gas occupies a...

Question 13

How many liters of pure oxygen gas, measured at STP, are required for the complete combustion of 11.2 L of methane gas (CH₄), also measured at STP?

Accepted Answer

At STP, gases react in volume ratios equal to their coefficients in the balanced equation. The combustion of methane is CH4 + 2O2 → CO2 + 2H2O, so 1 volume of CH4 requires 2 volumes of O2. Therefore, 11.2 L of CH4 requires 22.4 L of O2.

Question 14

How many liters of pure oxygen gas, measured at STP, are required for the complete combustion of 16.6 L of ethylene gas (C₂H₄), also measured at STP?

Accepted Answer

The answer of How many liters of pure oxygen gas,...

Question 15

A chemical reaction is shown: 2NO(g)+ O₂(g)? 2NO₂(g). How many liters of pure oxygen gas, measured at STP, are required for the complete reaction with 8.82 L of NO(g), also measured at STP?

Accepted Answer

According to the balanced chemical equation, 2 moles of NO react with 1 mole of O2. Therefore, 8.82 L of NO will require half that volume of O2, which is 4.41 L, since gases at STP have a direct volume-to-mole relationship.

Question 16

How many liters of pure oxygen gas, measured at 45.2 °C and 104.0 kPa, are required for the complete combustion of 5.60 L of acetaldehyde gas (C₂H₄O), measured under the same conditions of temperature and pressure?

Accepted Answer

The answer of How many liters of pure oxygen gas,...

Question 17

A gas sample weighing 3.78 grams occupies a volume of 2.28 L at STP. What is the molecular mass of the sample?

Accepted Answer

At STP, 1 mole of gas occupies 22.4 L. The molecular mass is calculated by (mass/volume) * 22.4 L/mol = (3.78 g / 2.28 L) * 22.4 L/mol = 37.1 g/mol.

Question 18

Two moles of carbon dioxide gas at 35°C are heated to 250°C in a container while the volume is kept constant. The density of the gas in the container will

Accepted Answer

The density of a gas is determined by its mass and volume. Since the volume is constant and the number of moles (mass) of gas does not change, the density remains the same despite the temperature change.

Question 19

Which of the following gases will have the greatest density at the same specified temperature and pressure?

Accepted Answer

SF6 has the greatest molecular weight among the given gases, so it will have the greatest density at the same specified temperature and pressure.

Question 20

A gas sample weighing 4.48 grams occupies a volume of 2.15 L at STP. What is the molecular mass of the sample?

Accepted Answer

At STP, 1 mole of gas occupies 22.4 L. The sample occupies 2.15 L, so it contains 2.15/22.4 = 0.096 moles. The molecular mass is 4.48 g / 0.096 moles = 46.7 g/mol.

Quiz 11: Properties of Gases

A sample of an unknown gas was isolated in a gas containment bulb on a manifold used in this type of work. The volume of the bulb was 1.425 liters. The temperature was 25.40 °C, and the manifold pressure was 583.0 torr. What volume would this gas sample occupy at STP?

A sample of a gas was isolated in a gas containment bulb on a manifold used in this type work. The volume of the bulb was 1.524 liters. The temperature was 28.40 °C, and the manifold pressure was 637.6 torr. What volume would this gas sample occupy at STP?

A sample of a gas was isolated in a gas containment chamber. The volume of the chamber was 1.245 cubic meters. The temperature was 22.80 °C, and the pressure was 88.26 kPa. What volume would this gas sample occupy at STP?

A sample of a gas occupies a volume of 1.820 liters at STP. What pressure would it exert if transferred to a 1.425-liter vessel in which its temperature was raised to 25.2 °C?

A sample of a gas occupies a volume of 185.5 mL at STP. What pressure would it exert if it was transferred to a gas bulb with a volume of 255.5 mL in which the temperature is maintained at 34.5 °C?

A sample of a gas occupies a volume of 185.5 mL at 20.2 °C and 0.945 atm. What pressure would it exert if it was transferred to a gas bulb with a volume of 255.5 mL in which the temperature is increased to 34.5 °C?

A sample of a gas occupies a volume of 1.462 liters at STP. It was placed in a different vessel in which the pressure was measured as 722.5 torr when the temperature was 25.20 °C. What is the volume of this new vessel?

A sample of a gas occupies a volume of 1.462 liters at 30.00°C and 1.250 atm. It was placed in a different vessel in which the pressure was measured as 722.5 torr when the temperature was 25.20 °C. What is the volume of this new vessel?

A sample of a gas occupies a volume of 1.462 liters at STP. It was placed in a different vessel with a volume of 1.601 liters, in which the pressure was measured as 722.0 torr. What is its temperature in this new vessel?

A sample of a gas occupies a volume of 1.246 liters at STP. It was placed in a different vessel with a volume of 1.410 liters, in which the pressure was measured as 108.5 kPa. What is its temperature in this new vessel?

A sample of a gas occupies a volume of 122.4 mL at STP. It was placed in a different vessel with a volume of 164.2 mL in which the pressure was measured as 0.9915 atm. What is its temperature in this new vessel?

A sample of a gas occupies a volume of 122.4 mL at 25°C and 1.45 atm. It was placed in a different vessel with a volume of 164.2 mL, in which the pressure was measured as 0.9915 atm. What is its temperature in this new vessel?

How many liters of pure oxygen gas, measured at STP, are required for the complete combustion of 11.2 L of methane gas (CH₄) , also measured at STP?

How many liters of pure oxygen gas, measured at STP, are required for the complete combustion of 16.6 L of ethylene gas (C₂H₄) , also measured at STP?

A chemical reaction is shown: 2NO(g) + O₂(g) ? 2NO₂(g) . How many liters of pure oxygen gas, measured at STP, are required for the complete reaction with 8.82 L of NO(g) , also measured at STP?

How many liters of pure oxygen gas, measured at 45.2 °C and 104.0 kPa, are required for the complete combustion of 5.60 L of acetaldehyde gas (C₂H₄O) , measured under the same conditions of temperature and pressure?

A gas sample weighing 3.78 grams occupies a volume of 2.28 L at STP. What is the molecular mass of the sample?

Two moles of carbon dioxide gas at 35°C are heated to 250°C in a container while the volume is kept constant. The density of the gas in the container will

Which of the following gases will have the greatest density at the same specified temperature and pressure?

A gas sample weighing 4.48 grams occupies a volume of 2.15 L at STP. What is the molecular mass of the sample?

Quiz 11: Properties of Gases

A sample of an unknown gas was isolated in a gas containment bulb on a manifold used in this type of work. The volume of the bulb was 1.425 liters. The temperature was 25.40 °C, and the manifold pressure was 583.0 torr. What volume would this gas sample occupy at STP?

A sample of a gas was isolated in a gas containment bulb on a manifold used in this type work. The volume of the bulb was 1.524 liters. The temperature was 28.40 °C, and the manifold pressure was 637.6 torr. What volume would this gas sample occupy at STP?

A sample of a gas was isolated in a gas containment chamber. The volume of the chamber was 1.245 cubic meters. The temperature was 22.80 °C, and the pressure was 88.26 kPa. What volume would this gas sample occupy at STP?

A sample of a gas occupies a volume of 1.820 liters at STP. What pressure would it exert if transferred to a 1.425-liter vessel in which its temperature was raised to 25.2 °C?

A sample of a gas occupies a volume of 185.5 mL at STP. What pressure would it exert if it was transferred to a gas bulb with a volume of 255.5 mL in which the temperature is maintained at 34.5 °C?

A sample of a gas occupies a volume of 185.5 mL at 20.2 °C and 0.945 atm. What pressure would it exert if it was transferred to a gas bulb with a volume of 255.5 mL in which the temperature is increased to 34.5 °C?

A sample of a gas occupies a volume of 1.462 liters at STP. It was placed in a different vessel in which the pressure was measured as 722.5 torr when the temperature was 25.20 °C. What is the volume of this new vessel?

A sample of a gas occupies a volume of 1.462 liters at 30.00°C and 1.250 atm. It was placed in a different vessel in which the pressure was measured as 722.5 torr when the temperature was 25.20 °C. What is the volume of this new vessel?

A sample of a gas occupies a volume of 1.462 liters at STP. It was placed in a different vessel with a volume of 1.601 liters, in which the pressure was measured as 722.0 torr. What is its temperature in this new vessel?

A sample of a gas occupies a volume of 1.246 liters at STP. It was placed in a different vessel with a volume of 1.410 liters, in which the pressure was measured as 108.5 kPa. What is its temperature in this new vessel?

A sample of a gas occupies a volume of 122.4 mL at STP. It was placed in a different vessel with a volume of 164.2 mL in which the pressure was measured as 0.9915 atm. What is its temperature in this new vessel?

A sample of a gas occupies a volume of 122.4 mL at 25°C and 1.45 atm. It was placed in a different vessel with a volume of 164.2 mL, in which the pressure was measured as 0.9915 atm. What is its temperature in this new vessel?

How many liters of pure oxygen gas, measured at STP, are required for the complete combustion of 11.2 L of methane gas (CH4) , also measured at STP?

How many liters of pure oxygen gas, measured at STP, are required for the complete combustion of 16.6 L of ethylene gas (C2H4) , also measured at STP?

A chemical reaction is shown: 2NO(g) + O2(g) ? 2NO2(g) . How many liters of pure oxygen gas, measured at STP, are required for the complete reaction with 8.82 L of NO(g) , also measured at STP?

How many liters of pure oxygen gas, measured at 45.2 °C and 104.0 kPa, are required for the complete combustion of 5.60 L of acetaldehyde gas (C2H4O) , measured under the same conditions of temperature and pressure?

A gas sample weighing 3.78 grams occupies a volume of 2.28 L at STP. What is the molecular mass of the sample?

Two moles of carbon dioxide gas at 35°C are heated to 250°C in a container while the volume is kept constant. The density of the gas in the container will

Which of the following gases will have the greatest density at the same specified temperature and pressure?

A gas sample weighing 4.48 grams occupies a volume of 2.15 L at STP. What is the molecular mass of the sample?

How many liters of pure oxygen gas, measured at STP, are required for the complete combustion of 11.2 L of methane gas (CH₄) , also measured at STP?

How many liters of pure oxygen gas, measured at STP, are required for the complete combustion of 16.6 L of ethylene gas (C₂H₄) , also measured at STP?

A chemical reaction is shown: 2NO(g) + O₂(g) ? 2NO₂(g) . How many liters of pure oxygen gas, measured at STP, are required for the complete reaction with 8.82 L of NO(g) , also measured at STP?

How many liters of pure oxygen gas, measured at 45.2 °C and 104.0 kPa, are required for the complete combustion of 5.60 L of acetaldehyde gas (C₂H₄O) , measured under the same conditions of temperature and pressure?