Question

Mass of0.25moles ofcarbon dioxide
das

Answer 1

Heya!!!


Answer to your question:
$1mol \: of \: CO2 \: weighs \: 12 + 2(16) \: gm$
$= 12 + 32 = 44gm$
$weight \: of \: 0.25 \: moles \: of \: CO2$
$= 0.25 \times 44 = 11gm$
Hope it helps ^_^

Answer 2

What is the mass of 1 mole of CO2?

MOLE: A practical chemical unit for handling atoms and molecules. Since atoms and molecules are so small, it is impossible to handle and count atoms and molecules individually. Therefore, the Chemists devised a special unit to describe very large number of atoms, ions and molecules and it is called mole and is abbreviated as mol.

A mole can be defined as “the molecular mass, atomic mass and formula mass of a substance expressed in grams

Carbon dioxide contain one carbon and two oxygen atoms and

Mass of one Carbon mole = 12 g

Mass of one Oxygen mole = 16 g

Mass of two Oxygen mole = 2 x 16 = 32 g

Mass of one mole of CO2 = 12 + 32

So , Mass of one mole of CO2 = 44 g

Therefore mass of 0.25 moles of CO2 is: 0.25×44= 11