Question

calculate the number of moles in 66 gram of carbon dioxide molecules ( atomic masses =O = 16 ,C=12

Answer 1

Hi mate.


Thanks for asking this question.


This is your answer,



First we find the molar mass of co2

= 1(c) + 2 (o)

= 12 +2 (16)

= 12 + 32

= 44 g.

# We know that,

No. Of moles = weight of CO2 ÷ molar

Answer 2

The number of moles in 66 gram of carbon dioxide molecules is 1.5

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number $6.023\times 10^{23}$ of particles.

To calculate the moles, we use the equation:

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

Given mass = 66 g

Molar mass = $1(12)+2(16)=44 g/mol$

Putting in the values:

$\text{Number of moles of carbon dioxide}=\frac{66g}{44g/mol}=1.5moles$

Thus there are 1.5 moles of carbon dioxide

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