Question

2. Calculate the mass of each of the following volumes.             a) 20 L of chlorine...

2. Calculate the mass of each of the following volumes.

            a) 20 L of chlorine gas

            b) 1,500 mL of sulfur trioxide gas

            c) 3.77 L of carbon monoxide gas

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Homework Answers

Answer #1

Molar mass of Cl2 = 70.9 g/mol

Molar mass of SO3 = 80.1 g/mol

Molar mass of CO = 28.0 g/mol

At Standard Temperature and Pressure mass of 22.4L of 22400 mL of gas is equal to its gram molar mass.

(a) Hence, mass of 22.4L of Cl2 gas = 70.9 g

So, mass of 20L of Cl2 gas = 20 x 70.9 / 22.4

= 63.3 g of Cl2.

(b) mass of 22400 L of SO3 gas = 80.1 g

So, mass of 1500 mL of SO3 gas = 1500 x 80.1 / 22400

= 5.36 g of SO3.

(c) mass of 22.4L of CO gas = 28.0 g

So, mass of 3.77L of CO gas = 3.77 x 28.0 / 22.4

= 4.71 g of CO2.

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