How many moles are present in 5.62 g of water (H_2O)?

• A. 1.00 mol
• B. 0.180 mol
• C. 0.312 mol
• D. 0.500 mol

Answer: (C)

Verified step by step guidance

1. Identify the given information: the mass of water is 5.62 g, and you need to find the number of moles.
2. Recall the formula to convert mass to moles: \(\text{moles} = \frac{\text{mass (g)}}{\text{molar mass (g/mol)}}\).
3. Calculate the molar mass of water (H\(_2\)O) by adding the atomic masses of its elements: hydrogen (H) has an atomic mass of approximately 1.00 g/mol, and oxygen (O) has an atomic mass of approximately 16.00 g/mol. So, molar mass of H\(_2\)O = \$2 \times 1.00 + 16.00$ g/mol.
4. Substitute the values into the formula: \(\text{moles} = \frac{5.62}{\text{molar mass of H}_2\text{O}}\).
5. Perform the division to find the number of moles of water present in 5.62 g.