MISSED THIS? Watch KCV 10,7, ĮWE 10.9; Read Section 10.7. You can click on the Review link to access the section in your e Text. Part A A gas mixture with a total pressure of 765 mmHg contains each of the following gases at the indicated partial pressures: 123 mmHg CO2, 229 mmHg Ar, and 192 mmHg O2. The mixture also contains helium gas. Part B What mass of helium gas is present in a 13.8-L sample of this mixture at 282 K ? Express your answer in grams. g m 3= Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining

A gas storage cylinder in an ordinary chemical laboratory measures 7.1 cm wide and 28. cm high. This is the label on it. Contents: N₂ gas Pressure: 16.2 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. Be sure your answer has the correct number of significant digits. L x10 X S

A gaseous mixture containing 16.0 g O2, 6.00 g H2, and 4.00 g He is placed into an 8.0 L vessel at 5 °C. What is the pressure of the mixture? 1.33 atm 12.8 atm 103 atm O72.8 atm 0.231 atm

A container of N,0,(g) has a pressure of 0.445 atm. When the absolute temperature of the N,O,(g) is tripled, the gas completely decomposes, producing NO, (g) and NO(g). Calculate the final pressure of the gas mixture, assuming that the container volume does not change. final pressure: atm