How many grams of $N a$ are present in $30$ g $N a O H$ ?

10

No worries! We‘ve got your back. Try BYJU‘S free classes today!

15

No worries! We‘ve got your back. Try BYJU‘S free classes today!

17

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

20

No worries! We‘ve got your back. Try BYJU‘S free classes today!

22

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C $17$ g
The molecular weight of $N a O H$ is 40 g/mol.
30 g of $N a O H$ corresponds to $\frac{30}{40} = 0.75$ moles.
0.75 moles of $N a O H$ contains 0.75 moles of $N a$ .
The atomic mass of $N a$ is 23 g/mol.
0.75 moles of $N a$ corresponds to $23 \times 0.75 = 17$ g of $N a$ .

Suggest Corrections

Similar questions

N a O H

N a O H

The level of contamination of chloroform was found to be 15 ppm. It means 15 g of chloroform is present in how many grams of solution?

M g

{N a}_{2} {S O}_{4}

98

H_{2} {S O}_{4}

40

N a O H

Join BYJU'S Learning Program