Question

даю 35 баллов только помогите

Answer 1

Объяснение:

Можно пожайлуста лутший ответ.

Answer 2

Ответ:

BaS

Ar(Ba) = 137

Ar(S) = 32

Mr(BaS) = 137 + 32 = 169

w(Ba) = 137 / 169 * 100% = 81,07%

w(S) = 32 / 169 * 100% = 18,93%

NaNO3

Ar(Na) = 23

Ar(N) = 14

Ar(O) = 16

Mr(NaNO3) = 23 + 14 + 16 * 3 = 85

w(Na) = 23 / 85 * 100% = 27,06%

w(N) = 14 / 85 * 100% = 16,47%

w(O) = 16 * 3 / 85 * 100% = 56,47%

FeS

Ar(Fe) = 56

Ar(S) = 32

Mr(FeS) = 56 + 32 = 88

w(Fe) = 56 / 88 * 100% = 63,64%

w(S) = 32 / 88 * 100% = 36,36%

BaSO4

Ar(Ba) = 137

Ar(S) = 32

Ar(O) = 16

Mr(BaSO4) = 137 + 32 + 16 * 4 = 233

w(Ba) = 137 / 233 = 58,8%

w(S) = 32 / 233 = 13,73%

w(O) = 16 * 4 / 233 =. 27,47%

Надеюсь помог ;)