A student wants to prepare a 1.0-liter solution of a specific Molarity. The student determines that the mass of the solute needs
1 answer:
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Explanation:
Formula for work done is as follows.
W =
where, k = proportionality constant =
d = separation distance = 0.45 nm =
Now, we will put the given values into the above formula and calculate work done as follows.
W =
=
=
Thus, we can conclude that work required to increase the separation of the two ions to an infinite distance is .
Answer:
The mass of Mg consumed is 21.42g
Explanation:
The reaction is
As per balanced equation, three moles of Mg will react with one mole of nitrogen to give one mole of magnesium nitride.
as given that mass of nitrogen reacted = 8.33g
So moles of nitrogen reacted =
moles of Mg required = 3 X moles of nitrogen taken = 3X0.2975 = 0.8925mol
Mass of Mg required = moles X molar mass = 0.8925 X 24 = 21.42 g