Answer:Therefore, there are approximately 0.2778 moles of water in 5 grams.
Explanation:To determine the number of moles in 5 grams of water, you can use the formula:
\[ \text{moles} = \frac{\text{mass (g)}}{\text{molar mass (g/mol)}} \]
The molar mass of water (\(H_2O\)) is the sum of the molar masses of its individual elements. The molar mass of hydrogen (\(H\)) is approximately 1 g/mol, and the molar mass of oxygen (\(O\)) is approximately 16 g/mol.
So, the molar mass of water (\(H_2O\)) is \(2 \times 1 \, \text{g/mol} + 1 \times 16 \, \text{g/mol} = 18 \, \text{g/mol}\).
Now, substitute the values into the formula:
\[ \text{moles} = \frac{5 \, \text{g}}{18 \, \text{g/mol}} \]
Calculate the result:
\[ \text{moles} \approx 0.2778 \, \text{mol} \]
Therefore, there are approximately 0.2778 moles of water in 5 grams.
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