Assignment:
Question 1. (Ideal Gas Law) How many moles of chlorine atoms are there in a container that holds 1.529 kg of XCl5 gas (where X = unknown element) at 600.5°C at a pressure of 1213 torr? The density of the gas is 4.63 g/L.
Question 2. (Ideal Gas Law) A chemist carries out a reaction and isolates a gaseous product. Analysis shows that each molecule is composed of one phosphorus atom and an undetermined amount of chlorine atoms. Determine the molecular formula of the compound if a 0.515 g sample at a pressure of 923 mm Hg and a temperature of 95.3°C occupies 93.37 mL.
Question 3. (Gas Stoich.) How many liters of CO2 gas at 45.2°C and 716 torr are formed when 0.485 L of a sample of liquid decane (C10H22) undergoes complete combustion? The density of decane is 0.730 g/mL.
Question 4. (Dalton's Law Partial P) A sample of solid LiAlH4 reacts with water forming aqueous lithium hydroxide, solid aluminum hydroxide, and hydrogen gas.
a. Write the balanced chemical equation that describes this reaction. Use the correct phase labels for each reactant and product.
b. How many grams of LiAlH4 reacted with an excess of water to produce a sample of hydrogen gas collected over water in a gas collection apparatus at 26.0°C and 0.915 atm in a 1245 mL container?
Provide complete and step by step solution for the question and show calculations and use formulas.