If a compound contains two oxygen atoms, four carbon atoms and number

1.	If a compound contains two oxygen atoms, four carbon atoms and number of hydrogen atoms is doubleof carbon atoms, the vapour density of it is10.(A) 88(B) 44(C) 132(D) 72
Answer» the no. of atoms of O = 2 ,the no. of atoms of C = 4the no. of atoms of H = 42=8. so, the molecular mass = 216+412+81 = 32+48+8 = 88 so vapour density is molecular mass/mass of H2 = 88/2 = 44.

If a compound contains two oxygen atoms, four carbon atoms and number of hydrogen atoms is doubleof carbon atoms, the vapour density of it is10.(A) 88(B) 44(C) 132(D) 72

Answer»

the no. of atoms of O = 2 ,the no. of atoms of C = 4the no. of atoms of H = 4*2=8.

so, the molecular mass = 2*16+4*12+8*1 = 32+48+8 = 88 so vapour density is molecular mass/mass of H2 = 88/2 = 44.