what mass of O2 will contains the same no of molecules as- 6.023*10²²molecules if H2O?
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6.023 * 10^22 molecules of H2O weighs = 1/10 of a mole
= 1/10 * 18 gm = 1.8 gm
1/10 of a mole of O2 : 1/10 * 32 = 3.2 gm
So 3.2 gm of O2 contains same (6.023*10^22 ) number of molecules as 1.8 gm of water.
= 1/10 * 18 gm = 1.8 gm
1/10 of a mole of O2 : 1/10 * 32 = 3.2 gm
So 3.2 gm of O2 contains same (6.023*10^22 ) number of molecules as 1.8 gm of water.
Anonymous:
why 1/10 of mol??
sorry for not explaining.... 1 mole means Avogadro num of molecules.. ie., 6.023 * 10^23.. we are given 6.023* 10^22.. so 0.1 moles of O2..
6.023 * 10^23 number of molecules of a substance weighs as much as its molecular weight in grams
hope that explanation makes it complete
yaa... TYSM
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