Question

Обчислити відносні молекулярні маси в речовинах ССl4, СаО, N2O , ZnСl2, Р2O5, Fе203, Сr03, Аl2S3.

Answer 1

Ответ:

Mr(CaO)=40+16=56

Mr(N²0)=1×2+16=18

Объяснение:

Больше решить немогу,так как нету с собой периодической ,только я не знаю как это не можешь решить,ведь это элементарно

Answer 2

I can help you with your question. To calculate the relative molecular masses of substances, you need to add up the relative atomic masses of the elements that make up the substance. For example, the relative molecular mass of CCl4 is:

M_r(CCl_4) = A_r(C) + 4A_r(Cl) = 12 + 4 \times 35.5 = 154

You can use the same method for the other substances. Here is a table with the results:

| Substance | Relative molecular mass | |-----------|-------------------------| | CCl4 | 154 | | CaO | 56 | | N2O | 44 | | ZnCl2 | 136 | | P2O5 | 142 | | Fe2O3 | 160 | | CrO3 | 100 | | Al2S3 | 150 |

If you want to learn more about how to calculate relative molecular masses, you can check out these websites. I hope this helps. Have a nice day.