Answer:
True
Explanation:
I did the test and got 100
Answer:
The enthalpy change during the reaction is -84 kJ/mole.
Explanation:
First we have to calculate the heat gained by the solution.
where,
Q = heat gained = ?
m = mass of the solution = 100.0 g
c = specific heat =
= final temperature =
= initial temperature =
Now put all the given values in the above formula, we get:
Now we have to calculate the enthalpy change during the reaction.
where,
= enthalpy change = ?
Q = heat gained = 420 J
n = number of moles silver nitrate= n
Molarity of the silver nitrate solution = M = 0.100 M
Volume of the silver nitrate solution = V = 50.0 mL = 0.050 L
(1 kJ = 1000 J)
Therefore, the enthalpy change during the reaction is -84 kJ/mole.
What do you mean? If you clarify, I'll answer in the comments.
Answer:
A. The lens spreads light.
Explanation:
The convex lens will converge the light that passes through it. The direction of light will be bend to be closer to the middle point. This is the lens used for the eyeglass that treat people with hypermetropia. That is why the convex lens also called a converging lens or a plus lens. The strength of the convex lens depends on its focal length, index of the material used, and the radius of curvature.