How to Calculate the Mass of Water (H2O) – A Step-by-Step Guide
Learn how to easily calculate the mass of H2O with this straightforward step-by-step guide.
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To calculate the mass of H2O: First, determine the molar mass of water (H2O). The molar mass of hydrogen (H) is 1 g/mol, and oxygen (O) is 16 g/mol. Since water has 2 hydrogen atoms and 1 oxygen atom, its molar mass is (2 * 1) + 16 = 18 g/mol. Next, multiply this value by the number of moles you have. For instance, 2 moles of H2O would have a mass of 2 * 18 g = 36 grams.
FAQs & Answers
- What is the molar mass of water? The molar mass of water (H2O) is 18 g/mol, calculated from 2 g/mol for hydrogen and 16 g/mol for oxygen.
- How do you convert moles of H2O to grams? To convert moles of H2O to grams, multiply the number of moles by the molar mass of water, which is 18 g/mol.
- Why is knowing the mass of H2O important? Knowing the mass of H2O is essential in chemistry for calculating reactions, preparing solutions, and understanding properties of water.