Question

i) calculate the number of atoms present in 6 gram atom of calcium ii) calculate the number of gram atom present in 18.069 * 10^24 atom of mg

Answer 1

HEY MATE ✌✌✌✌✌✌✌✌✌



HERE IS YOUR ANSWER :-


1) mass in gram / atomic mass in gram = No of atom/ 6.023 * 10^23

6/12 = no of atom / 6.023 * 10^23

1/2 = no of atom / 6.023 * 10^23

no of atom = 6.023 * 10^23 /2

no of atom = 3.01 * 10^23


ii) mass in gram / atomic mass in gram = no of atom / 6.023 * 10^23

mass in gram /24 = 18.069 * 10^24/ 6.023 * 10^23

mass in gram /24 = 3 * 10

mass in gram /24 = 30

mass in gram = 30 * 24

mass in gram = 720 g


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