When the following equation is balanced,?

Question

the coefficient of nitric acid is____
N2O5(g)+H2O(i)--->HNO3 (aq)
a.5
b.2
c.3
d.4
e.1

Answer 1

the answer is 2 cuz by multuplyin nitric acid by 2 u get the same number of elements for each element as u have on the other side.

Answer 2

The correct answer is B

When I balance equations, I set up a table. I'll try to make it understandable here:

REACTANT SIDE
N 2
__O_5_____________
H 2
O 1

PRODUCT SIDE
H 1 | | 2
N 1 | X2 | 2
O 3 | | 6

OK, to explain. On both sides I wrote the elements involved in the reaction. On the reactant side, I split N/O and H/O with a line to denote that I could not multiply by the same coefficient throughout the whole side. Then I put the number of each element beside the element. Next, I found which numbers did not match up. On the product side, H had only one while it had two on the reactant side. So I multiplied HNO3 by 2. Now the H's were equal--each side had 2. As it turns out, this also balances the nitrogens 2-2. This multiplication gives 6 oxygen on the product side. Look at the reactant side and see that there are 5+1=6 oxygens. It is now balanced with simply a coefficient of 2 on HNO3, which is answer B.

Answer 3

the coefficient of nitric acid is 2...=)
so the answer is letter b.

Answer 4

b. 2
The H, N, and Os are balanced with:
2 H's
2 N's
6 O's
on each side

Answer 5

answer is 2

Answer 6

This answer is 2.

Please pick me as the best answer.

Answer 7

b. Try it out.