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A chemist measures the amount of hydrogen gas produced during an experiment. He finds that 21.0 g of hydrogen gas is produced. Calculate the number of moles of hydrogen gas produced. Round your answer to 3 significant digits.

A chemist measures the amount of hydrogen gas produced during an experiment. He finds that 21.0 g of hydrogen gas is produced. Calculate the number of moles of hydrogen gas produced. Round your answer to 3 significant digits.

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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**Transcription for Educational Website:** --- A chemist measures the amount of hydrogen gas produced during an experiment. He finds that 21.0 g of hydrogen gas is produced. Calculate the number of moles of hydrogen gas produced. Round your answer to 3 significant digits. **Input Box:** [ ] mol **Interactive Elements:** - Checkbox labeled "×10" - Icons: - "X" for clearing the input - "↻" for resetting the input - "?" for help or additional information **Utility Icons on the Right:** - Calculator icon - Graph icon - Periodic table icon --- **Explanation:** The task is to convert grams of hydrogen gas to moles. To do this, we use the molar mass of hydrogen, which is approximately 2.02 g/mol for H₂. Use the formula: \[ \text{moles of H}_2 = \frac{\text{mass in grams}}{\text{molar mass in g/mol}} \] Perform the calculation and round the answer to three significant digits.
Transcribed Image Text:**Transcription for Educational Website:** --- A chemist measures the amount of hydrogen gas produced during an experiment. He finds that 21.0 g of hydrogen gas is produced. Calculate the number of moles of hydrogen gas produced. Round your answer to 3 significant digits. **Input Box:** [ ] mol **Interactive Elements:** - Checkbox labeled "×10" - Icons: - "X" for clearing the input - "↻" for resetting the input - "?" for help or additional information **Utility Icons on the Right:** - Calculator icon - Graph icon - Periodic table icon --- **Explanation:** The task is to convert grams of hydrogen gas to moles. To do this, we use the molar mass of hydrogen, which is approximately 2.02 g/mol for H₂. Use the formula: \[ \text{moles of H}_2 = \frac{\text{mass in grams}}{\text{molar mass in g/mol}} \] Perform the calculation and round the answer to three significant digits.
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