Answer: Mass of hydrogen produced is 0.0376 g.
Explanation:
The reaction equation will be as follows.
Now, formula for total pressure will be as follows.
Hence, 
= 755 mm Hg - 42.23 mm Hg
= 712.77 mm Hg
= 0.937 atm
Now, we will calculate the moles of 
as follows.
n = 
mol
= 0.0187 mol
Therefore, mass of will be calculated as follows.
= 0.0376 g
Thus, we can conclude that mass of hydrogen produced is 0.0376 g.
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:
3.913x10^22 atoms
Explanation:
We have come to discover that 1 mole of any substance contains 6.02x10^23 atoms as explained by Avogadro's hypothesis.
This means that 1 mole of Hg contains 6.02x10^23 atoms.
Therefore, 0.065 moles of Hg will contain = 0.065 x 6.02x10^23 = 3.913x10^22 atoms
It became a problem in the 1950's
Answer: the correct answer is a.
Explanation: a spreading of the sea floor is the correct answer.
