Acid rain has a higher than normal pH. a. True b. False
1 answer:
You might be interested in
Answer: There will be 41382 J energy must be absorbed by 45.0g of water to increase its temperature from to
.
Explanation:
Given: Mass = 45.0 g
Initial temperature =
Final temperature =
Formula used to calculate heat energy is as follows.
where,
q = heat energy
m = mass of substance
C = specific heat = (here, for water)
= initial temperature
= final temperature
Substitute the values into above formula as follows.
Thus, we can conclude that there will be 41382 J energy must be absorbed by 45.0g of water to increase its temperature from to
.
The molality of H₂SO₄ solution is 24.2 m.
<u>Explanation:</u>
We need to find the molality of sulfuric acid.
Mass of sulfuric acid = 785.6 g
Mass of water = 359 g
We have to find the moles of H₂SO₄ by using its mass and molar mass as,
Moles of H₂SO₄ =
= 8.7 moles
Mass of the solution in kg = = 0.359 kg
Molality =
=
= 24.2 m
So molality of the H₂SO₄ solution is 24.2 m.