Question

What type of substance would be best for use in a heating system?

Answer 1

Answer:

1 .C) a gas with a low specific heat

2. Iron

3. Option B) temperature

Explanation:

Thinking process:

The heating system depends on the substance required to heat or cool a system. The heat capacity is the increase in the temperature of a substance of a unit mass. A unit mass is 1 kg

For heating solutions, a substance with a low specific heat capacity is needed. Thus, a substance used to heat hot water system is gas. The vapor has two energies :vaporization and enthalpy of vaporization added to it.

2. heat, is given by:

$Q = mC\delta\theta$

1840 = 0.2  * (45-20)  * C

       C = $\frac{1840}{0.2*20}$

          = 460 J

          = 0.460 J/gC

From the tables, the matter is iron

3. Temperature is the measurement of the average kinetic energies of a substance. This energy is then translated as heat. Hence the measure of thermal energy.

Answer 2

A solid with high specific heat