Heat Of Solution Lab 34 Answers

The definitions of heat flow rate and heat capacity are related to the physical properties of matter that determine the direction of heat flow (gain or loss). The following terms are closely related to heat flow and heat capacity:

The equation is valid for any two substances, whenever the proportionality factor (k) is well defined. When k is positive, the two substances retain heat, and when k is negative, the two substances lose heat, regardless of the arithmetic signs of the q values. If the substances have the same heat capacity, then k = 1. If the substances have different heat capacities, then k may be smaller or larger than 1. In the specific case of two objects, where the amount of heat that flows into a pan is equal to the amount of heat that flows out, k is equal to 1, regardless of whether the substances are the pan or the pan's contents.

Thus, the equation states that for every amount of energy that is transferred from M to W, the same amount of energy must flow from W to M. If heat is added to the frying pan, the amount of heat added is the same as the amount of heat removed from the pan:

The heat capacity of water at a given temperature can be determined by measuring the amount of heat (as joules) needed to raise the temperature of a litre of water from x to y degrees (the difference between x and y must be small in order to approximate the heat capacity as the amount of heat in a small interval).

The specific heat capacity of a body of matter ((C_{s})) is the heat capacity of a kilogram of that body of matter per kilogram of that body of matter at a specific temperature.

The heat capacity of water ((C_{water})) is a temperature-dependent property of water and is the quantity of heat ((q)) a kilogram of water absorbs or releases when it experiences a change of 1 kelvin.

When a substance melts, it undergoes a volumetric change from solid to liquid. Thus, the heat required to melt a unit volume of the substance is the specific heat capacity of the substance times the volume of the liquid.

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