Question

answer the questions:
moles to mass conversion:

1. convert 3 moles of sodium chloride (nacl) to grams. molar mass of nacl = 58.44 g/mol.
2. convert 0.5 moles of calcium carbonate (caco3) to grams. molar mass of caco3 = 100.09 g/mol.

Explanation:

Step1: Use the formula \(m = n\times M\)

For the first question, \(n = 3\space mol\) (moles of \(NaCl\)) and \(M=58.44\space g/mol\) (molar mass of \(NaCl\)).

Step2: Calculate the mass of \(NaCl\)

\(m_{NaCl}=n\times M = 3\times58.44\)

$$m_{NaCl}= 175.32\space g$$

Step3: For the second question, \(n = 0.5\space mol\) (moles of \(CaCO_3\)) and \(M = 100.09\space g/mol\) (molar mass of \(CaCO_3\))

Step4: Calculate the mass of \(CaCO_3\)

\(m_{CaCO_3}=n\times M=0.5\times100.09\)

$$m_{CaCO_3}=50.045\space g$$

Answer:

1. \(175.32\space g\)
2. \(50.045\space g\)