Question

Tolong bantu ya pake cara . makasih

Answer 1

7. Ar x = 9,3 x10²³ / 1/12 x 1,99 x10²³
Ar x = 9,3 x 12 / 1,99  => (a)

8. H2S dan NaCl => (c)
 
9. K = 1, Al = 1, S = 2, O = 20, H = 24
1,1,2,20,24 => (e)

10. O : 2a = 2b + c
C : 4 = b
H : 4 = 2c => c = 2
2a = 2(4) + 2 = 10 , a = 5
a = 5 , b = 4, c = 2 => (d)

11. reaktan ada di sebelah kiri ( C2H4 dan O2) => (c)

12. karat besi = Fe2O3
3 mol CO = 3 CO
2 atom besi = 2 Fe
3 mol CO2 = 3 CO2
Fe2O3 + 3 CO => 2 Fe + 3 CO2 => (d)