Question

How many grams of NAOH are contained within 0.785 moles of NAOH?

Answer 1

When you do the dimensional analysis for this problem you should end up with the answer 31.4 grams of NAOH.

Answer 2

Answer: The mass of NaOH for given number of moles is 31.4 grams.

Step-by-step explanation:

To calculate the mass for given number of moles, we use the equation:

`\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}`

We are given:

Molar mass of NaOH = 40 g/mol

Moles of NaOH = 0.785 moles

Putting values in above equation, we get:

`0.785mol=\frac{\text{Mass of NaOH}}{40g/mol}\\\\\text{Mass of NaOH}=(0.785mol* 40g/mol)=31.4g`

Hence, the mass of NaOH for given number of moles is 31.4 grams.