You visited us 1 times! Enjoying our articles? Unlock Full Access!

Mole Concept & Avogadro Number

Calculate the...

Question

Calculate the number of molecules in 90g of H2.

Open in App

Solution

The solution is as follows:

1. Molar mass of H₂ = 2 g/mol

2. Number of moles of H₂ = $\frac{90}{2} = 45 m o l e s$

3. Number of molecules in 1 mole = 6.023 $\times$ 10²³
Number of molecules in 45 moles = 45 $\times$ 6.023 $\times$ 10²³ .

Suggest Corrections

Similar questions

Calculate the number of moles of $H_{2}$ in a sample containing $3.011 \times 10^{3} H_{2}$ molecules.

Calculate the number of moles of H₂ molecule present in 72 gms of water.

U_{r m s}

H_{2}

1 a t m

H_{2}

0.00009 g / c c

A, B

C

H_{2}, O_{2}

N_{2}

A, B

C

H_{2}

A

O_{2}

B . (c) I f t h e v o l u m e o f

, p r e s e n t i n

i s d o u b l e d a t S T P, c a l c u l a t e t h e m a s s i n g r a m o f

g a s . [g i v e n : M o l a r v o l u m e a t S T P

L, A t . m a s s :

1.15 g

N a

0.9 g

H_{2} O

80 %

H_{2}

Join BYJU'S Learning Program