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alleydog38511
20.12.2020 •
Chemistry
You are given 4.92 grams of H2O. How many moles is that?
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Ответ:
0.273 mol H₂O
General Formulas and Concepts:
Chemistry - Atomic Structure
Reading a Periodic TableUsing Dimensional AnalysisExplanation:
Step 1: Define
4.92 g H₂O
Step 2: Identify Conversions
Molar Mass of H - 1.01 g/mol
Molar Mass of O - 16.00 g/mol
Molar Mass of H₂O - 2(1.01) + 16.00 = 18.02 g/mol
Step 3: Convert
Step 4: Check
We are given 3 sig figs. Follow sig fig rules and round.
0.27303 mol H₂O ≈ 0.273 mol H₂O
Ответ:
3927 /500
Step-by-step explanation: