Advertisements
Advertisements
प्रश्न
Calculate the number of gram atoms in 4.6 gram of sodium.
Advertisements
उत्तर
Given: Na = 4.6 gm
Atomic mass = 23
No. of gram atoms of Na = `"Mass of Na"/"Atomic mass of Na"`
= `4.6/23`
= 0.2 gms
संबंधित प्रश्न
How many moles of calcium carbonate (CaCO3) are present in 10 g of the substance ? (Ca = 40 u ; C = 12 u ; O = 16 u)
How many atoms are there in 0.25 mole of hydrogen ?
What is meant by ‘a mole of carbon atoms’ ?
Calculate the weight of one molecule of oxygen.
[Avogadro’s number = 6 × 1023, O = 16 ]
Complete the following calculations. Show working for complete credit :
Calculate the mass of calcium that will contain the same number of atoms as are present in 3.2 gm of Sulphur. [Atomic masses : S = 32, Ca = 40]
What is the value of molar volume of a gas at S.T.P?
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)
Four grams of caustic soda contains ______.
Calculate the number of moles in 27g of Al.
The visible universe is estimated to contain 1022 stars. How many moles of stars are present in the visible universe?
