I'm understanding most of this physics, but here is one last question I would appreciate help on. Thank you!
Okay, so the question involves a figure. A link to the question and the picture with it is below can be found by googling the question along with Holt physics. The link should be on the first page somewhere.
Page 27, question # 4.
The question:
From the heating curve for a 15 g sample, as shown in Figure 10-17,
estimate the following properties of the substance.
a. the specific heat capacity of the liquid
b. the latent heat of fusion
c. the specific heat capacity of the solid
d. the specific heat capacity of the vapor
e. the latent heat of vaporization
I'm not look for answers. I'm look to find out how to get the answers. Again, I would appreciate any help. Thank you!
Specific heat is equal to energy divided by mass times change in temperature.
Latent fusion/vaporization is equal to energy divided by mass.
the body temperature of a chicken is about 107 F. Calculate the temperature in degrees celcius. (b) The body temperature of a pig is 39.4C. Calculate its temperature in degrees fahrenheit
To answer this question and estimate the properties of the substance, you will need to analyze the heating curve provided in Figure 10-17.
First, let's understand the concepts involved:
1. Specific heat capacity: It is the amount of heat energy required to raise the temperature of a substance by 1 degree Celsius. The equation for specific heat capacity is Q = mc∆T, where Q is the heat energy, m is the mass, c is the specific heat capacity, and ∆T is the change in temperature.
2. Latent heat: It is the heat energy absorbed or released during a phase change (solid to liquid or liquid to gas) at a constant temperature. The equation for latent heat is Q = mL, where Q is the heat energy, m is the mass, and L is the latent heat.
Now, let's go through the steps to estimate each property:
a. Specific heat capacity of the liquid: On the heating curve, identify the portion where the temperature is increasing steadily and the substance is in the liquid phase. It will show a linear relationship between heat energy and temperature. The slope of this line, when multiplied by the mass of the substance, gives the specific heat capacity of the liquid (c).
b. Latent heat of fusion: Identify the plateau in the heating curve where the temperature remains constant while the substance is melting (changing from solid to liquid). The heat energy absorbed during this phase change is equal to the mass of the substance multiplied by the latent heat of fusion (L).
c. Specific heat capacity of the solid: After the substance is completely melted, it will again show a linear relationship between heat energy and temperature. The slope of this line, when multiplied by the mass of the substance, gives the specific heat capacity of the solid (c).
d. Specific heat capacity of the vapor: On the heating curve, identify the portion where the temperature is increasing steadily and the substance is in the vapor (gaseous) phase. The slope of this line, when multiplied by the mass of the substance, gives the specific heat capacity of the vapor (c).
e. Latent heat of vaporization: Identify the plateau in the heating curve where the temperature remains constant while the substance is vaporizing (changing from liquid to gas). The heat energy absorbed during this phase change is equal to the mass of the substance multiplied by the latent heat of vaporization (L).
By analyzing the heating curve and applying the concepts mentioned above, you can estimate the values for each property of the substance without needing answers from the specific question you mentioned.
Please note that the above explanation is a general approach to solving this type of problem. If you encounter any specific difficulties while analyzing the heating curve, feel free to ask for further assistance.