Q4 of 7 Page 43

How many grams of neon will have the same number of atoms as 4g of calcium?

Atomic mass of calcium= 40

Atomic mass of neon is = 20


No of atoms of calcium in 4g sample is


⇒ 6.023×1022


Now,


no. of atoms of neon are also same this no of moles of neon is


6.022 × 1022 atoms will be = n =


0.1 mole


Thus mass of neon will be M = 0.1×20 = 2 gram .


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