At Point A, the beginning of the observations, the substance exists in a solid state. 1. The material in this phase has Fixed
volume and
Fixed
shape
2.
With each passing minute,
Heat
is added to the substance.
3.
This causes the substance to
more rapidly which we detect by a
collide
Temperature rise in the substance.
4
Melt
At Point B, the temperature of the substance is
°C. The solid begins to
or in a
state
5. At Point C, the substance is completely
liquid
Fixed
volume and
no definite shar
.
6. Material in this phase has
7. The energy put into the substance between 5 and 9 minutes was used to convert the substance from a
Solid
to a
This heat energy is called the latent heat of fusion
of the substance.
8. Between 9 and 13 minutes, the added energy increases the
liquid

1. how much energy is needed to raise the temperature of 40.0 g of argon from 25c to 40c? the specific heat capacity of argon is 0.520 j/(g·k) 2a. 23.0 ml of 0.100 m hcl (standard) are added from a buret to neutralize 50.0 ml of an unknown basic solution. 2b. if the oh- produced in the previous reaction came from ca(oh)2, then what is the molarity of the ca(oh)2? 3.calculate the new freezing-point of a solution when 60.5 grams of cacl2 solute is dissolved in 0.612 kg of water. 4. what is the maximum number of moles of alcl3 that can be produced from 5.0 mol al and 6.0 mol cl2? 5. a sample of oxygen gas has a volume of 150 ml when its pressure is 0.923 atm. if the pressure is increased to 0.987 atm and the temperature remains constant, what will the new volume be? 6. nitrogen gas in a closed container at a temperature of 100.0 oc and 3.0 atm is heated to 300 oc. what is the pressure of the gas at the higher temperature?