Lab: Boyle’s Law — Unit test Answers

A scientist is examining a mixture of nitrogen, hydrogen, and ammonia. The individual pressures that are exerted by nitrogen and hydrogen are 0.26 atm and 0.28 atm, respectively. If the total pressure is 0.90 atm, what is the partial pressure of ammonia?Use .

The chemical equation below shows the formation of aluminum oxide (Al2O3) from aluminum (Al) and oxygen (O2).4Al + 3O2 2Al2O3The molar mass of O2 is 32.0 g/mol. What mass, in grams, of O2 must react to form 3.80 mol of Al2O3?

Which proportionality shows the result of combining Avogadro’s law with Boyle’s law?

A tire at 21°C has a pressure of 0.82 atm. Its temperature decreases to –3.5°C. If there is no volume change in the tire, what is the pressure after the temperature change?Use .

Which law is described by saying that when the pressure of a gas in a sealed container is cut in half, the gas will double in volume at a steady temperature?

What is the relationship between a mole and Avogadro’s number?

Consider the equation below.Zn + H2SO4 ZnSO4 + H2The mole ratio of zinc to zinc sulfate is

Consider the reaction below.2Al2O3 4Al + 3O2How many moles of oxygen are produced if 11.0 mol of Al are produced?

The molar mass of water (H2O) is 18.0 g/mol. A sample of water has a mass of 18.0 g. How many moles of water are contained in this sample?

Which quantity is held constant when working with Boyle’s, Charles’s, and Gay-Lussac’s laws?

The chemical equation below shows the decomposition of ammonium nitrate (NH4NO3).NH4NO3 N2O + 2H2OA chemist who is performing this reaction starts with 160.1 g of NH4NO3. The molar mass of NH4NO3 is 80.03 g/mol; the molar mass of water (H2O) is 18.01 g/mol. What mass, in grams, of H2O is produced?

The ideal gas constant, R has several different values that could be used. Which quantity causes these differences?

What is the volume of 0.200 mol of an ideal gas at 200. kPa and 400. K?Use and .

The volume of a gas decreases to half of its original volume, but the gas maintains the same number of moles and temperature. According to the ideal gas law, what will most likely happen to the pressure?

Consider the balanced equation below. What is the mole ratio of PCl3 to PCl5?