Question

convert into mole 12 gram carbon dioxide ​

Answer 1

Given:-

Mass=12g

C02 (Molecular mass of carbon =12 and oxygen =16)

=>1×12+2×16

=>12+32

=>44

$\mathbf \red{formula \: used}$

Numbers of mole = Given Mass/molar mass

$\mathbf \red{to \: calculated}$

No. of mole present in 12 g of CO2.

$\mathbf \red{solution}$

Numbers of mole = Given Mass/molar mass

putting the value

Now,

n=12/44

=>n=3/11

=>n=3.666

Answer 2

Given:

Mass of carbon dioxide = 12 grams

To find:

Number of moles of Carbon dioxide in 12 grams=?

Solution:

The given mass of CO₂ can be converted into moles in the following way:

• Step 1: Find out the molecular mass of carbon dioxide

• Molecular mass is found by adding the mass of all the atoms present in a molecule
• Molecular mass= Mass of Carbon + 2(Mass of Oxygen)
• Molecular mass = 12.0107 units + 2(15.999 units)
• Molecular mass of CO₂ = 12.0107 + 31.998
• The molecular mass of CO₂ = 44.0087 g/mol

• Step 2: Convert the mass into moles using the following formula

• Number of moles = Mass of substance / Molecular mass of a substance
• Number of moles = 12 grams / 44.0087 g/mol
• Number of moles of CO₂ = 0.2723 moles

Hence, 0.2723 moles are present in 12 grams of CO₂.