Advertisements
Advertisements
प्रश्न
Calculate the number of atoms in the following:
52 moles of He
Advertisements
उत्तर
52 moles of He atoms = 52 x 6.02 x1023
= 313.04 x 1023
= 3.13 x 1025
APPEARS IN
संबंधित प्रश्न
Fill in the following blanks :
0.5 mole of calcium element has a mass of ............... .
Explain with examples what is meant by a 'mole' of a substance.
The relative atomic mass of Cl atom is 35.5 a.m.u. Explain this statement.
Fill in the blank.
One a.m.u. is the mass of ______ atom of C12.
Explain the term:
Molar volume
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.
Calculate the number of moles in 1.51 × 1023 molecules of NH4Cl.
How many grams are there in the following?
2 moles of the hydrogen molecule, H2.
How many grams are there in the following?
5 moles of sulphur molecule, S8
The visible universe is estimated to contain 1022 stars. How many moles of stars are present in the visible universe?
