Answer to Question #109631 in General Chemistry for Marissa

Question

A 2.96-gram sample of which elemental gas will occupy a volume of 426 mL at 5°C and
0.714 atm?
2. Which noble gas takes 2.86 times longer to effuse than methane (CH4)?
3. A 2.5-L sample of gas is collected in at 271°C. What volume would the gas occupy at -14°C?
4. If 45.0 L of natural gas, which is essentially methane (CH4), undergoes complete combustion
at 730 mmHg and 20°C, how many grams of each product are formed?
5. A mixture of gases at 28°C and 1.25 atm contains 15 L of oxygen and 25 L of hydrogen. What
is the mole fraction and partial pressure of each gas?
6. Find the root square mean speed of gaseous nitric acid at 235°C.
7. What is the density of phosphorus pentachloride at 65°C and 645 torr?

Answer 1

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