Question

I want solution of both questions​

Answer 1

Answer:

38)4 =0.24

39)1 =C6H8N2

Explanation:

4A+2B +3C =A4B2C3

A = 1 mole B =0.6 C = 0.72

A =1/4 B =0.6/2 C=072/3 less. Value is C so is limiting reagent.

Product depends on c moles

3 moles give 1 mole of product

0.72 molesC gives?

072/3 =0.24 moles

39)

C moles9/12 =0.75

H moles=1/1 =1

N moles 3.5/14 = 0.25

Simple ratio

C 0.75/0.25 =3

H 1 /0.25 =4

N 0.25/0.25 =1

Empirical formula =C3H4N

Molecular mass = n X empirical mass

n =108/54=2

Molecular formula =2(C3H4N)

C6H8N2