Answered

How many moles of copper (II) sulfate [tex]$\left( CuSO_4\right)$[/tex] are in a [tex]$0.125 \, g$[/tex] sample of [tex][tex]$CuSO_4$[/tex][/tex]?

A. 0.0087
B. 0.03400
C. 0.00043
D. 0.00078



Answer :

GinnyAnswer
To determine the number of moles of copper (II) sulfate (CuSO₄) in a 0.125 g sample of CuSO₄, we can follow these steps:

1. Identify the given values:
- Mass of the CuSO₄ sample: 0.125 grams
- Molar mass of CuSO₄: 159.609 g/mol

2. Recall the formula for calculating moles:
[tex]\[ \text{Moles} = \frac{\text{Mass}}{\text{Molar Mass}} \][/tex]

3. Substitute the given values into the formula:
[tex]\[ \text{Moles of CuSO₄} = \frac{0.125 \text{ g}}{159.609 \text{ g/mol}} \][/tex]

4. Calculate the number of moles:
[tex]\[ \text{Moles of CuSO₄} \approx 0.00078 \text{ mol} \][/tex]

Therefore, the number of moles of copper (II) sulfate in a 0.125 g sample is approximately 0.00078 mol, which matches one of the given choices.

The correct answer is:
0.00078

Other Questions