Question

A chemist determines by measurements that 0.0500 moles of oxygen gas participate in a chemical reaction.

Calculate the mass of oxygen gas that participates. Round your answer to significant digits.

Answer 1

1.60 g

Step-by-step explanation:

A chemist determines by measurements that 0.0500 moles of oxygen gas, that is, O₂, participate in a chemical reaction. The molar mass of oxygen is 32.00 g/mol. We can find the mass corresponding to 0.0500 moles using the following expression.

m = n × M

where

m is the mass

n are the moles

M is the molar mass

m = n × M

m = 0.0500 mol × 32.00 g/mol

m = 1.60 g