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Br2 + Cl2 ---> 2BrCl

1. FIND ALL THE REASONS ESTEQUIOMETRICAS WITH REGARD TO Cl2.

2. all the masses of Cl2 are needed to form 55g of BrCl.

3. all the grams of Br2 are needed to form 38g of BrCl.

please I need help for this question for a homework.

thanks

2 answers

Look at the mole ratio: one mole of Br2 produces two moles of BrCl

So for 2) how many moles of BrCl is in 55grams? Figure that out. Then, you must have half that amount of moles of Cl2. Convert that to grams.

http://es.wikipedia.org/wiki/Estequiometr%C3%ADa
I NOT UNDERSTAND