Question

Express 0.0081 M hydrazine.
a) 0.00 M
b) 0.01 M
c) 0.81 M
d) 8.10 M

Answer 1

0.0081 M hydrazine is best expressed as 0.01 M (option b), as it is the closest value to the given concentration without going over.

Step-by-step explanation:

To express 0.0081 M hydrazine in one of the provided options, we should look at the options and choose the one that is closest to 0.0081 M without exceeding it. This is because the options seem to indicate decimal places rounded to two digits. The options provided are:

• 0.00 M
• 0.01 M
• 0.81 M
• 8.10 M

The correct way to express 0.0081 M using these options is 0.01 M, as it is the closest value to 0.0081 M without going over. Therefore, the answer is option b) 0.01 M.