Question

When 3g of carbon is burnt in 8g of oxygen, 11g of carbon dioxide will be formed. What mass of carbon dioxide will be formed when 15g of carbon is burn?

Answer 1

HEY MATE

Here is your answer⬇

C + O2 ------> CO2

3g + 8g -------->11g

When 15g of carbon is burnt in 8g of oxgen,11g of carbon dioxide will be formed,only 3g of carbon is burnt in 8g of oxygen to give 11g of carbon dioxide and the remaining 12g will be left behind. This answer is in accordance with law of constant proportion.

Hope the answer helps u!!✌✌

Answer 2

Molecular weight of CO₂

= molecular weight of carbon + molecular weight of dioxygen

= 12g + 32g = 44g

i.e 1 mole of carbon(6g) and 1 mole of dioxygen (32 g ) produce 44 g of carbon dioxide

then 1 mole of carbon burnt with 16 g of oxygen , it will produce 44× 16 /32 = 22 g of CO₂ .

so when 2 mole of carbon burnt with 16 g of oxygen , it will produce 22*2 g of CO₂

i.e 44g of CO₂ will be generated.

                     

when 3.00 g of carbon is burnt in 50.00g of oxygen then the mass of carbon dioxide formed =53.00g

according to the law of conservation of mass the total mass before and after the reaction remains same.

3.00g +50.00g =53.00g