Question

How many grams are there in 0.250 moles of sodium hydroxide

Answer 1

The answer is 10 grams. 
The atomic weights for each elements are :       
Na - 22.99 g/mol 
O -  16.00 g/mol 
H -    1.01 g/mol
The sum = 40 g/mol for NAOH
0.250 moles * 40.00 g / 1 mole = 10 g NaOH

Answer 2

Answer: The mass of sodium hydroxide is 10 grams.

Explanation:

To calculate the mass of a substance, we use the equation to calculate the number of moles, we get:

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

We are given:

Moles of sodium hydroxide = 0.25 mol

Molar mass of sodium hydroxide = 40 g/mol

Putting values in above equation, we get:

$0.25=\frac{\text{Mass of sodium hydroxide}}{40g/mol}\\\\\text{Mass of sodium hydroxide}=10g$

Hence, the mass of sodium hydroxide is 10 grams.