Question

Рассчитайте относительные молекулярные массы соединений: (a) K₂SO₂(b) Ca(OH)₂(c) CaCl₂​

Answer 1

Mr(K2SO3)= 39*2+32+16*3=158 г/моль

Mr(Ca(OH)2) =40+16*2+1*2=74 г/моль

Mr(CaCl2)= 40+35,5*2 =111 г/моль

Answer 2

I can help you with your question.

To calculate the relative molecular masses of compounds, you need to add up the atomic masses of all the atoms in the formula. You can find the atomic masses of the elements in the periodic table. For example, the atomic mass of K is 39.1, the atomic mass of S is 32.1, and the atomic mass of O is 16.0.

Using this method, the relative molecular masses of the compounds are:

(a) K₂SO₂ = 2 x 39.1 + 32.1 + 2 x 16.0 = 142.3 (b) Ca(OH)₂ = 40.1 + 2 x (16.0 + 1.0) = 74.1 (c) CaCl₂ = 40.1 + 2 x 35.5 = 111.1

I hope this helps you understand how to calculate the relative molecular masses of compounds. If you have any other questions, feel free to ask me.Ответь+подробно.++Рассчитайте+относительные+молекулярные+массы+соединений:+++(a)+K₂SO₂(b)+Ca(OH)₂(c)+CaCl₂​+