Vibrate
Explanation:
Through conduction, energy is transferred as particles vibrates into one another.
Conduction is one of the modes of heat transfer. Others are convection and radiation.
- Thermal conduction occurs by the vibrations of molecules of solids.
- When heat is added to body, gain kinetic energy.
- This energy causes the molecules fixed to begin to vibrate around their fixed point.
- When they break free, they start colliding with one another and other molecules with lower energy away from the heat source.
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Glucose freezes at -3.75 °C and freezing point of pure water is 0 °C. Thus, depression in freezing point or can be calculated as follows:
It is related to molal concentration as follows:
Here, is freezing point depression constant.
Rearranging to calculate molal concentration:
Therefore, molal concentration of glucose in the solution will be 2.02 m.
Answer:
In this experiment, the period of the pendulum is the dependent variable. There are three independent variables: the pendulum mass, the amplitude of the swing, and the length of the pendulum string.
Explanation:
Close the windows and doors so the outside contaminated air can be slowed to entering the place you are inside.
After beginning the experiment with a saturated solution, then increasing the heat, we will be left with an unsaturated solution.
To obtain the saturated solution, we must dissolve sugar in the water. We can say that the solution has become saturated when the solution is no longer able to dissolve more sugar. It has reached its capacity for the solute that it can dissolve in these conditions.
However, the temperature of a solution has an effect on the dissolving limit of the solution. That is, when a solution is heated it becomes able to dissolve more solute. Therefore, if we were to heat a saturated solution, it will be able to dissolve <u>more solute and therefore will no longer be at its limit</u>, meaning it is no longer a saturated solution. It has become unsaturated.
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