I guess you are asking what world should go at the beginning of the sentence. If I am right, it is energy.
The answer u are looking for is b
Moles Cu+2 = M * V
= 0.05 L * 0.011 m
= 0.00055 moles
when the molar ratio of Cu2+: EDTA = 1:1 so moles od EDTa also =0.00055 moles
and when the Molarity of EDTa = 0.0630 M
∴ Volume of EDTA = moles / Molarity
= 0.00055 / 0.0630
= 0.0087 L = 8.7 L
Answer:Ithink erosion cuz if we can tell how long ago it eroded we can see how old it is
Explanation:
