Question

13. Find a, b, c, d

aC7H8 + bO2 = cC02 + dH2O

a) 2, 10, 14,8
b) 2,9,4,8
c) 1,9, 7,4
d) 1, 5, 7,4 ​

Answer 1

Answer:

It is given that, In ΔABC and DE∥BC.

We have to find AD=?

Since,

DB=7.2c.m.

AE=1.8c.m.

EC=5.4c.m.

So, We know that (using Thales Theorem)

DB

AD

=

CE

AE

Then,

7.2

AD

=

5.4

1.8

AD=

5.4

1.8×7.2

AD=

3

7.2

AD=2.4 c.m.

Hence it is complete solution.

Answer 2

Answer:

c) 1,9,7,4

Explanation:

C7H8 + 9 O2 = 7CO2 + 4H2O