Calculating the Mass of Hydrogen Gas in a Chemical Reaction

Introduction

A chemist determines by measurements that 0.070 moles of hydrogen gas participate in a chemical reaction. The task at hand is to calculate the mass of hydrogen gas that participates in the reaction. This requires a simple calculation using the molar mass of hydrogen gas.

Calculation

Answer: 0.14g

Explanation: Mass conc. = n x molar Mass Mass conc. = 0.070 x 2 = 0.14g

Detailed Explanation

Answer: The mass of hydrogen gas that participates is 0.14 grams

Explanation: Step 1: Data given Moles of H2 = 0.070 moles Molar mass H2 = 2.02 g/mol Step 2: Calculate the mass of hydrogen gas Mass of H2 = moles H2 * molar mass H2 Mass of H2 = 0.070 moles * 2.02 g/mol Mass of H2 = 0.14 grams The mass of hydrogen gas that participates is 0.14 grams

A chemist determines by measurements that 0.070 moles of hydrogen gas participate in a chemical reaction. Calculate the mass of hydrogen gas that participates. Round your answer to significant digits.

The mass of hydrogen gas that participates is 0.14 grams.