CBSE Class 11-science Answered
numericals 1
Asked by | 11 May, 2008, 06:36: PM
Expert Answer
For such a type of problem first find out the # of moles of methane in 3.2 g.
methane mol.wt is 16 so 16 g has 5 x 6.023 x 1023atoms in 1 mole since 1 molecule has 5 atoms
therefore 3.2 g is 0.2 moles of molecules but the atoms are 0.2 x 5 i.e 1 mole
Ca at.wt is 40 ----- 1 mole is 40 g
40g has 6.023 x 1023 atoms .
Answered by | 12 May, 2008, 08:05: AM
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