7. Gases

In a gas stoichiometry experiment, a graph shows the volume of O_2 (in liters) on the left y-axis and the volume of CO_2 (in liters) on the right y-axis as a function of time. Which gas is plotted using the y-axis on the right?

A gas sample contains 4.0 g of CH_4 and 2.0 g of He. What is the total volume of the sample at STP (0°C, 1 atm)?

At STP, what volume of argon gas is occupied by 1.60 grams of argon?

In the context of gas stoichiometry, which variable is held constant in Charles's Law?

Which of the following is an example of gas diffusion?

A sample of NO_2 occupies 16.0 L at STP. How many moles of NO_2 are present in the sample?

In the context of gas stoichiometry, to pull a vacuum means to ____.

Which of the following best describes the relationship between the volume of a gas and the number of moles at constant temperature and pressure?

Which apparatus allows a scientist to measure the volume of gas released during a reaction?

Which of the following is NOT true about the volume of a gas under standard conditions?

Which process helps remove carbon dioxide from the atmosphere, demonstrating the Law of Conservation of Mass?

Which statement about gases is most accurate?

What volume of oxygen gas, measured at STP, is required to completely react with 4.00 g of hydrogen gas (H_2) according to the reaction: 2 H_2(g) + O_2(g) → 2 H_2O(g)?

Which of the following statements is true about gases under standard conditions?