Answer:
latent heat, also called the heat of vaporization, is the amount of energy necessary to change a liquid to a vapour at constant temperature and pressure. The energy required to melt a solid to a liquid is called the heat of fusion, and the heat of sublimation is the energy
Explanation:
Answer: the focal length of the CCl4-glass combination is 102.31 cm
Explanation:
Given that;
Index of refraction n1 = 1.55
carbon tetrachloride (CCl4), which has n2 = 1.46
radii of curvature for its surfaces R1 = 4.6cm and R2 = 9.20 cm
the focal length of the CCl4-glass combination = ?
we can determine the focal length using the Formula;
1/f = ( n1 - n2) ( 1/R1 - 1/R)
so we substitute in our values
1/f = ( 1.55 - 1.46 ( 1/4.6 - 1/9.20)
1/f = 0.09 × 0.1086
1/f = 0.009774
f = 1 / 0.009774
f = 102.31 cm
Therefore the focal length of the CCl4-glass combination is 102.31 cm
Answer:
0.1132 kJ/K the total heat capacity of the calorimeter.
Explanation:
The combustion energy of glucose = 15.57 kJ/g.
Energy released on 2 combustion of 2.000 g of glucose = Q
![Q= 15.57 kJ/g\times 2.000 g=31.140 kJ](https://tex.z-dn.net/?f=Q%3D%2015.57%20kJ%2Fg%5Ctimes%202.000%20g%3D31.140%20kJ)
Q=31.140 kJ
Heat gained by the calorimeter = Q'
Heat gained by the calorimeter = heat released on combustion of glucose
Q'= 31.140 kJ
Temperature change of the calorimeter = ΔT = 23.34°C - 21.45°C = 1.89°C
ΔT = 1.89°C = 275.04 K
Total heat capacity of the calorimeter = C
![Q'=C\times \Delta T](https://tex.z-dn.net/?f=Q%27%3DC%5Ctimes%20%5CDelta%20T)
![C=\frac{Q'}{\Delta T}=\frac{31.140 kJ }{275.04 K}=0.1132 kJ/K](https://tex.z-dn.net/?f=C%3D%5Cfrac%7BQ%27%7D%7B%5CDelta%20T%7D%3D%5Cfrac%7B31.140%20kJ%20%7D%7B275.04%20K%7D%3D0.1132%20kJ%2FK)
0.1132 kJ/K the total heat capacity of the calorimeter.