52.6k views
0 votes
Can you help answer #10 please?

Can you help answer #10 please?-example-1

1 Answer

5 votes
Just like in algebra, coefficients are before the variable, in chemistry it's before the element name/letters. So in 2Al, 2 is the coefficient.

Subscripts are the small numbers (sub) that you see after the element letters. In H2, the subscript is 2.
User Nick Alexeev
by
7.7k points