Advertisements
Advertisements
प्रश्न
Calculate the number of moles in 12g of oxygen gas.
Advertisements
उत्तर
No. of moles = `"Weight in g"/"Atomic mass"`
= `12/32`
= 0.375 mole.
APPEARS IN
संबंधित प्रश्न
If one mole of carbon atoms weighs 12 gram, what is the mass (in gram) of 1 atom of carbon?
What is the mass of 0.2 mole of oxygen atoms?
What is the mass of 0.2 mole of oxygen atoms ?
What name is given to the amount of substance containing this number of atoms ?
How many atoms are there in 0.25 mole of hydrogen ?
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 ?
Find the number of moles in 10 g of CaCO3.
How many grams of Al are present in 0.2 mole of it?
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 |
How many grams are there in the following?
2 moles of the hydrogen molecule, H2.
