Advertisements
Advertisements
प्रश्न
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 |
उत्तर
| 1. | 8 g of O2 | - | 0.25 moles |
| 2. | 4 g of H2 | - | 2 moles |
| 3. | 52 g of He | - | 13 moles |
| 4. | 112 g of N2 | - | 4 moles |
| 5. | 35.5 g of Cl2 | - | 0.5 moles |
APPEARS IN
संबंधित प्रश्न
The percentage composition of a gas is Nitrogen 82.35%, Hydrogen 17.64%. Find the empirical formula of the gas. [N = 14, H = 1]
Fill in the following blanks :
A mole represents an .............. number of particles of a substance.
What is meant by ‘a mole of carbon atoms’ ?
If 0.2 mol of the following substance is required how many grams of that substance should be taken?
Sodium chloride
Prove the Following :
One mole of any gas contains th e same number of molecules.
Explain the term : Gram mole
Calculate the weight of one molecule of oxygen .
[Avogadro's number = 6 x 1023, O = 16 ]
Calculate the mass of 0.1 mole of the following:
Na2SO4.10H2O
(Ca = 40, Na = 23, Mg = 24, S = 32, C = 12, Cl = 35.5, O = 16, H = 1)
Cinnabar (HgS) is a prominent ore of mercury. How many grams of mercury are present in 225 g of pure HgS? Molar mass of Hg and S are 200.6 g mol–1 and 32 g mol–1 respectively.
Fill in the missing data in the Table
| Species Property | H2O | CO2 | Na atom | MgCl2 |
| No. of moles | 2 | - | - | 0.5 |
| No. of particles | - | 3.011×1023 | - | - |
| Mass | 36g | - | 115 g | - |
