How many atoms of hydrogen are represented in 2(NH4)2SO4? 4 8 16 32

My first thought was 8, since the subscript multiplies everything in the parentheses. Help?

Question

How many atoms of hydrogen are represented in 2(NH4)2SO4?  4  8  16  32

My first thought was 8, since the subscript multiplies everything in the parentheses. Help?

joannablackwelder · Answer

It looks like there are 8 in the molecule, but the coefficient of 2 makes 16 in 2 molecules.

anonymous · Answer

So the leading coefficient also multiplies everything in the parentheses?

joannablackwelder · Answer

The leading coefficient multiplies everything in the entire molecule by 2.

anonymous · Answer

Ohh. Okay, thank you so much! Do you know how to balance equations by chance? I'm stuck on one .

joannablackwelder · Answer

Sure!

joannablackwelder · Answer

Glad I could help :)

anonymous · Answer

S8 + O2 yields SO3

joannablackwelder · Answer

I would first balance the S (It is usually best to leave O and H until last). So, we have S8 + O2 -> 8SO3

joannablackwelder · Answer

Now we have 24 Os in the product so we will need 12O2s in the reactants to balance.

joannablackwelder · Answer

S8 + 12O2 -> 8SO3

anonymous · Answer

Thank you! :) If you need help with anything I'll do my best to help. :D

joannablackwelder · Answer

No problem, thanks :)