Question

give the answers of above questions step by step​

Answer 1

Answer:

answer 1 i didn't know but rest of them i can answer

answer 2 is atomic mass of chlorine is 36.966 and average one is 35.453

answer 3 is  64.0638 g/mol

answer 4 is 119.37 grams per mol

answer 5  didn't know the answer

answer 6 is

isotopes are variants of a particular chemical element which is differ in neutron number.

see i'm from class 8 so i didn't know much but i take help from my brother's book so don't report my answer

Explanation:

Answer 2

The inauguration ceremony of Nelson Mandela, was attended by dignitaries and politicians of more than 140 countries.