A metal tank contains three gases: oxygen, helium, and nitrogen. If the partial pressures of the three gases in the tank are 40.0 atm of O,, 5.0 atm of N,, and 15.0 atm of He, what is the total pressure inside of the tank? Show Your Work

A sample of ammonia (NH3) gas is completely decomposed to nitrogen and hydrogen gases over heated iron wool. If the total pressure is 735 mmHg after the reaction, calculate the partial pressures of N2 and H2. Enter your answers in scientific notation.

A gas storage cylinder in an ordinary chemical laboratory measures 6.4 cm wide and 26. cm high. This is the label on it. Contents: N, gas Pressure: 23.9 atm If the cylinder is opened and the gas allowed to escape into a large empty plastic bag, what will be the final volume of nitrogen gas, including what's collected in the plastic bag and what's left over in the cylinder? Write your answer in liters. Round your answer to 2 significant digits. L x10

You may want to reference (Page) section 5.6 while completing this problem. A gas mixture with a total pressure of 770 mmHg contains each of the following gases at the indicated partial pressures: 126 mmHg CO2, 234 mmHg Ar, and 193 mmHg O2. The mixture also contains helium gas. Part A What is the partial pressure of the helium gas? Express your answer in millimeters of mercury. PHe = 217 mmHg Submit Previous Answers Part B Correct Dalton's law of partial pressures states that the total pressure exerted by all of the gases in a mixture is the sum of the partial pressures exerted by the individual gases. The partial pressure of helium is determined by subtracting the partial pressures of CO2, Ar, and O2 from the total pressure. What mass of helium gas is present in a 10.2-L sample of this mixture at 278 K ? Express your answer in grams. - ΑΣΦ m = 5.14 ? g 09