Question

please solve this then i can make you brainlist

Answer 1

Answer:

Answer for 19(v)

Explanation:

Answer=6.022×10^23

I got this only

Answer 2

Answer:

19)ii c

19)iii b

19)iv d

19)v a

Explanation:

a = 2*6.023*10^23= 12.046*10^23

b= 3.011/6.023 = 0.5

c= 44*b = 22

d = 115/23 = 5

e = 5*6.023*10^23= 30.115*10^23

f = 0.5 *6.023*10^23= 3.0115*10^23

g = 0.5 * ( 24 + 71) = 47.5