mole ratios of hydrazine should be 1:2. I could be wrong. Are there any options to choose from?
If this is just a general question it seems to vary from about 4.5g to 5g. Is there more data to the question?
Answer:
The ideal gas law can be used in stoichiometry problems in which chemical reactions involve gases. Standard temperature and pressure (STP) are a useful set of benchmark conditions to compare other properties of gases. At STP, gases have a volume of 22.4 L per mole.
B, the opposing forces are the same, thus, the ball doesn't move back or forward.
PH + pOH = 14
12.52 + pOH = 14
pOH = 14 - 12.52
pOH = 1.48
[OH⁻] = 10^ -pOH
[OH⁻] = 10 ^- 1.48
[OH⁻] = 0.033 M