Can you help answer #10 please?

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asked Mar 14, 2017 52.6k views

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Nick Alexeev · Answer 1 · 2017-03-19T15:36:08+0000

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.

Can you help answer #10 please?

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