Question

$110$ g of $C{O}_2$ contains:

• A. $30$ g of carbon
• B. $5$ atoms of oxygen
• C. $2.5$ moles of atoms
• D. $7.5$ moles of atoms

Answer 1

Answer: (A), (B), (D)

The correct options are
A $30$ g of carbon
B $5$ atoms of oxygen
D $7.5$ moles of atoms

Molecular weight of $C{O}_2=12+2\left(16\right)=44$

Moles of $C{O}_2$ in $110g=\frac{110}{44}=2.5$

$1mole$ of $C{O}_2$ has $1$ atom of $C$,$2$ atoms$of$ O$

$2.5moles$ of $C{O}_2$ has $2.5$ atom of $C,2\times 2.5=5$atoms of$O$

$\Rightarrow total=2.5+5=7.5$ atoms

Weight of $2.5$ atoms of $C=2.5\times 12=30gm$