Advertisements
Advertisements
प्रश्न
Calculate the number of atoms in the following:
52 moles of He
उत्तर
52 moles of He atoms = 52 x 6.02 x1023
= 313.04 x 1023
= 3.13 x 1025
APPEARS IN
संबंधित प्रश्न
Convert into mole.
22 g of carbon dioxide
A gas cylinder can hold 1 kg of hydrogen at room temperature and pressure
1) Find the number of moles of hydrogen present.
2) What weight of CO2 can the cylinder hold under similar conditions of temperature and pressure? (H = 1, C = 12, O = 16)
3) If the number of molecules of hydrogen in the cylinder is X, calculate the number of CO2 molecules in the cylinder under the same conditions of temperature and pressure.
4) State the law that helped you to arrive at the above result.
One of the following elements has an atomicity of ‘one’. This element is :
What is meant by ‘a mole of carbon atoms’ ?
What do you understand by the term mole? How many elementary units are in one mole of a substance?
Find the number of molecules in 3.2 g of SO2.
1 mole of any substance contains ______ molecules.
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)
Calculate the number of moles in 1.51 × 1023 molecules of NH4Cl.
If 0.2 mol of the following substance is required how many grams of that substance should be taken?
Calcium carbonate