I have test tomorrow. Stoichemistry!!!?

0 ⤊

I have test tomorrow. Stoichemistry!!!?

How many moles of bromine are needed to completely react with 5.4 mol of NaI according to the following reaction.
Br2 + 2NaI --> 2NaBr+I2

How many grams H2O is formed when 32.3g H2 completely reacts with oxygen according to the following equation:
2H2+O2-----> 2H2O

2007-06-06 09:42:30 · 3 answers · asked by Buttons. 1 in Science & Mathematics ➔ Chemistry

3 answers

1. half of 5.4

2. 32.2/2 x 18

2007-06-06 10:10:01 · answer #1 · answered by Gervald F 7 · 0⤊ 0⤋

1) 2.7 mol. because of the 1:2 mol ratio between Br2 and 2NaI

2007-06-06 18:09:56 · answer #2 · answered by Anonymous · 0⤊ 0⤋

1.) 5.4 ( 1/2) = answer

2.) 32.3 g (1molH2/ 2 g H2)(2 mols H2O/ 2 mols H2)(18 g H2O/1 mol H2O) = answer

2007-06-06 17:10:17 · answer #3 · answered by Alexis 3 · 0⤊ 0⤋