The number of moles of carbon dioxide which contain 8 g of oxygen
[a] 0.5 mol [b] 0.2 mol [c] 0.4 mol [d] 0.25 mol
Q.-5-
The number of atoms present in0.5 g-atoms of nitrogen is same as the atoms in
[a] 12 g of carbon [b] 32 g of sulphur [c] 8 g of oxygen [d] 24 g of magnesium.
Q.4-d]0.25 mol
ReplyDelete1 mole of CO2=12gm[i.e-wt.of carbon]+32gm[i.e-wt.of O2]
here,wt.of carbon=8g=(32/4)g
hence,in case of mole, we can say that,1/4mole i.e-0.25mole
{49 seconds}
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Q.5-c]8 g of oxygen
0.5g-atoms of Nitrogen=7gms.of Nitrogen
=1/2gm.atoms of Nitrogen
here,8g of Oxygen=1/2gm.atoms of Oxygen
{59 seconds}
Q4.-ans-d]0.25mol
ReplyDeleteQ5.ans-c]8g of oxygen
ReplyDelete