Question

How many moles of carbon dioxide are present in 2.98 grams of this compound?

Answer 1

approximately 0.068 moles of carbon dioxide

Answer 2

Step by step explanation:

Given : Mass of carbon dioxide is $2.98$ grams.

To find : The no. of moles of carbon dioxide.

Formula used :  No. of moles of any compound A

$N =\frac{W}{M}$

N is the no. of moles, W is for the given mass and M is for molar mass of compound A.

• Calculation for no. of moles(N)

We have mass of CO₂ is,

$W=2.98 grams$

we have to find the molar mass(M) of CO₂ first,

Molar mass of Carbon is $12g/mol$  and molar mass of oxygen is $16g/mol$.

$M=12+2*16$

    $=12+32$

    $=44$

now we have ,

$W=2.98 g$  and  $M=44g/mol$

so N is,

$N =\frac{W}{M}$

   $=\frac{2.98}{44}$

   $=0.0677$ mol.

No. of moles of CO₂ is $0.0677 mol.$