C) 3
Calculate the number of particles in each of the following (AS)
a) 46g of Na
b) 8g of O2
c) 0.1 mole of hydrogen
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C) 3
Calculate the number of particles in each of the following (AS)
a) 46g of Na
b) 8g of O2
c) 0.1 mole of hydrogen
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Answer:
a.weight/molar mass =46/23=2moles
no of particles=no of moles*avagadros number
=6.023*10^23*2=12.046*10^23
b.no of moles=8/32=0.25
no o particles=6.023*10^23*0.25
=1.505*10^23
c.no of particles=no of moles*avagadros number
0.1*6.023*10^23=6.023*10^22