Question

how many moles are in 4.30 g of h₂o? answer in units of mol. 1. 0.122087 2. 0.0665927 3. 0.249723 4. 0.238624 5. 0.0887902 6. 0.0832408 7. 0.144284 8. 0.216426 9. 0.17758 10. 0.0610433

Explanation:

Step1: Calculate molar mass of H₂O

Molar mass of H: \(1.008\space g/mol\), O: \(16.00\space g/mol\).
For \(H_2O\), molar mass \(M = 2\times1.008 + 16.00 = 18.016\space g/mol\).

Step2: Use moles formula (\(n=\frac{m}{M}\))

Given \(m = 4.30\space g\), \(M = 18.016\space g/mol\).
\(n=\frac{4.30}{18.016}\approx0.2386\space mol\).

Answer:

1. 0.238624