Advertisements
Advertisements
प्रश्न
Calculate the mass of 0.1 mole of the following:
CaCO3
(Ca = 40, Na = 23, Mg = 24, S = 32, C = 12, Cl = 35.5, O = 16, H = 1)
Advertisements
उत्तर
Molar weight = [40 + 12 + (3 x 16)] = 100 g
∴ 0.1 mole of CaCO3 has mass =100 (molar mass) x 0.1
= 10 g
APPEARS IN
संबंधित प्रश्न
Calculate the molar mass of the following substance:
Ethyne, C2H2
How many moles of O2 are there in 1.20 × 1022 oxygen molecules ?
Define the term:
Relative molecular mass
How many grams of H2O are present in 0.2 mole of it?
Calculate the number of moles of methane in 0.80 g of methane.
The molecular formula for elemental sulphur is S8.In a sample of 5.12 g of sulphur:
How many molecules and atoms are present?
Calculate the number of oxygen atoms in 0.10 mole of Na2CO3 . 10H2O.
Match the following.
| 1. | 8 g of O2 | - | 4 moles |
| 2. | 4 g of H2 | - | 0.25 moles |
| 3. | 52 g of He | - | 2 moles |
| 4. | 112 g of N2 | - | 0.5 moles |
| 5. | 35.5 g of Cl2 | - | 13 moles |
Deduce the number of molecules of the following compound in the given quantity.
90g water
Deduce the number of molecules of the following compound in the given quantity.
7.1 g chlorine
