Question

1) 4.4 g CO2 ના મોલ કેટલા થાય?

(CO2 નું આણ્વીયદળ = 44 u)​

Answer 1

Given:

4.4 g CO₂

To find:

no. of moles in 4.4 gm of CO₂

Solution:

We will first see how the molar mass of CO₂ is 44 u:

So,

Molar Mass of CO₂ is,

= [Molar mass of C] +  [2 × Molar mass of O]

= [12] + [2 × 16]

= 12 + 32

= 44 u or g/mol ← i.e., 1 mole of CO₂ contains 44 gms of CO₂

Now,

If 44 g of CO₂ = 1 mole

Then, 4.4 g of CO₂ will be = $\frac{1}{44} \times 4.4$ = $\bold{0.1\:moles}$

Thus, 4.4 gms of CO₂ contains 0.1 moles of CO₂.

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