How many grams of CO2 is present in 0.1 mole of it?

How many grams of CO₂ is present in 0.1 mole of it?

Numerical

1 mole of CO₂ weighs = 12 + (16 x 2) = 44 g

∴ 0.1 mole of CO₂ has mass = 0.1 x 44 = 4.4 g

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Chapter 5: Mole concept and Stoichiometry - EXERCISE-5B [Page 84]

Chapter 5 Mole concept and Stoichiometry
EXERCISE-5B | Q 9. (d) | Page 84

Fill in the following blanks :

A mole represents an .............. number of particles of a substance.

What name is given to the amount of substance containing this number of atoms ?

What is the mass of 5 moles of sodium carbonate (Na2CO3) ?

(Atomic masses : Na = 23 u ; C = 12 u ; O = 16 u)

Show by means of calculations that 5 moles of CO2 and 5 moles of H2O do not have the same mass. How much is the difference in their masses ?

Prove the Following :
One mole of any gas contains th e same number of molecules.

Fill in the blank
Avogadro's number is equal to ______

Find the number of moles in 10 g of CaCO₃.

Calculate the number of atoms in the following:

52 g of He

How many grams are there in the following?

4 moles of the phosphorous molecule, P₄

The visible universe is estimated to contain 10²² stars. How many moles of stars are present in the visible universe?