144k views
0 votes
After an electric sign is turned on, the temperature of its glass goes from 23.5°C to 65.5°C. The sign’s glass has a mass of 905 grams, and the specific heat capacity of the glass is 0.67 J/g

°C. How much heat did the glass absorb?

In the first box type in the number you calculated, in the second box type your unit.

User Stroi
by
8.2k points

1 Answer

1 vote
To calculate the amount of heat absorbed by the glass, we can use the formula:

Q = mcΔT

where Q is the heat absorbed, m is the mass of the glass, c is the specific heat capacity, and ΔT is the change in temperature.

Given:
m = 905 grams
c = 0.67 J/g°C
ΔT = (65.5°C - 23.5°C) = 42°C

Substituting the values into the formula:

Q = (905 grams) * (0.67 J/g°C) * (42°C)

Calculating the product:

Q = 26066.35 J

Therefore, the glass absorbed approximately 26066.35 Joules of heat.

In the first box, the calculated number is 26066.35. In the second box, the unit is Joules (J).
User Stephan Wagner
by
7.7k points