QQuestionChemistry
QuestionChemistry
Calculate the mass of water that contains 10^22 molecules.
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Answer
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Step 1: First, we need to find the number of moles in 10^22 water molecules.
\frac{10^{22}}{6.022 \times 10^{23}} \
We know that 1 mole of any substance contains 6.022 x 10^23 molecules (Avogadro's number). So, the number of moles in 10^22 water molecules is given by: approx 0.0166 \ mol
Step 2: Now, we can calculate the mass of water from its molar mass.
Mass = 0.0166 \ mol \times 18.015 \ g/mol \approx 0.3 \ g
The molar mass of water (H^2O) is approximately 18.015 g/mol. The mass of water is given by:
Final Answer
The mass of water that contains 10^22 molecules is approximately 0.3 grams.
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