Advertisements
Advertisements
प्रश्न
How many grams are there in the following?
2 moles of the hydrogen molecule, H2.
Advertisements
उत्तर
Formula = No. of moles (n) × (Gram molecular mass)
Mass of 2 moles of H2 molecule
= 2 × 2 = 4 g
APPEARS IN
संबंधित प्रश्न
Calculate the molar mass of the following substance:
Nitric acid, HNO3
If 16 g of oxygen contains 1 mole of oxygen atoms, calculate the mass of one atom of oxygen.
Deduce the number of molecules of the following compound in the given quantity.
32g oxygen
Define the term.
Molar volume
Calculate the number of molecules in 12.8g of sulphur dioxide gas. Take Avogadro's number as 6 x 1023.
[S = 32, 0 = 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]
Calculate the number of gram atoms in 4.6 grams of sodium (Na = 23)
Solid ammonium dichromate decomposes as:
\[\ce{(NH4)2Cr2O7 -> N2 + Cr2O3 + 4H2O}\]
If 63 g of ammonium dichromate decomposes. Calculate the quantity in moles of nitrogen formed.
How many grams are there in the following?
5 moles of sulphur molecule, S8
Compute the difference in masses of 103 moles each of magnesium atoms and magnesium ions.
(Mass of an electron = 9.1×10–31 kg)
