convert into mole ?(a)12g of oxygen gas (b) 22g of co 2
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(a) Here we are given the mass of oxygen gas as 12 grams
Formula of oxygen gas = O₂
Molar mass = 2 × 16 = 32 grams.
We know the formula to calculate the no: of moles
No : of moles = Given mass ÷ Molar mass
= 12 ÷ 32
= 0.375 moles
(b) Molar mass = given mass / molecular Mass
mm= 22/44
mm= 0.5
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