Question

Calculate mass of Nitrogen (N2) which contains same number of molecules as are present in 4.4g of carbon dioxide (CO2). ​

Answer 1

Given :

Mass of CO₂ = 4.4 g

To find :

Mass of N₂ which contains same number of molecules

Formula used :

• Number of mole = given mass ÷ molar mass
• Number of molecules = Number of moles× Avogadro's number

Additional points :

• Molar mass of CO₂ = 44 g/mol
• Molar mass of N₂ = 28 g/mol

Steps to follow :

• Firstly find Number of moles of CO₂
• After that find Number of molecules of CO₂
• Find Number of moles of N₂, from Number of molecules
• Then find , Mass of N₂ through it

Solution :

• Number of moles of CO₂ = 4.4/44

➝ Number of moles of CO₂ = 0.1 moles

➝ Number of molecules of CO₂ = 0.1× Avogadro's Number

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Now , as Number of molecules of CO₂ = Number of molecules of N₂

➝ Number of molecules of N₂ = 0.1 × Avogadro's Number

➝ Number of mole of N₂ = Number of molecules of N₂ ÷ Avogadro's Number

➝ Number of mole of N₂ = 0.1 × Avogadro's Number ÷ Avogadro's Number

➝ Number of mole of N₂ = 0.1 mole

Also,

➝ Number of mole of N₂ = mass of N₂ ÷ molar mass of N₂

➝ Mass of N₂ = 0.1 × 28

➝ Mass of N₂ = 2.8 g

ANSWER :

Mass of N₂ = 2.8 g

Answer 2

Answer:

hope the attachment above helps you