Advertisements
Advertisements
प्रश्न
What is the mass of 0.5 mole of water molecules?
Advertisements
उत्तर
Mass of one mole of water molecule = 18 g
Then, mass of 0.5 mole of water molecules = 0.5 × 18 g = 9 g
संबंधित प्रश्न
One of the following elements has an atomicity of ‘one’. This element is :
What is a group of 6.022 × 1023 particles known as ?
How many moles of oxygen atoms are present in one mole of the following compounds ?
- Al2O3
- CO2
- Cl2O7
- H2SO4
- Al2(SO4)3
Define the term:
Mole
Calculate the number of atoms in the following:
52 moles of He
Cost of Sugar (C12H22 O11) is Rs 40 per kg; calculate its cost per mole.
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 |
N2 + 3H2 → 2NH3
(The atomic mass of nitrogen is 14, and that of hydrogen is 1)
1 mole of nitrogen (______ g) +
3 moles of hydrogen (______ g) →
2 moles of ammonia (______ g)
Raunak took 5 moles of carbon atoms in a container and Krish also took 5 moles of sodium atoms in another container of same weight.
- Whose container is heavier?
- Whose container has more number of atoms?
Compute the difference in masses of 103 moles each of magnesium atoms and magnesium ions.
(Mass of an electron = 9.1×10–31 kg)
