Please help, I'm being timed! this was the question!
2 Al + 6 HBr --> 3 H2 + 2 AlBr3

If 16.5g of aluminum reacts with 21.2g of HBr, how many grams of aluminum bromide will be produced? what is the excess and limiting factors?

In the reading, yao chen-yuan describes traveling to deliver a message. why was he willing to risk danger to travelto tientsin? he wanted to the boxers with their cause

What are the three major branches of natural science? • earth and space science, life science, physical science •earth and space science, physical science, chemistry •physical science, life science, chemistry •life science, chemistry, physics

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled