Question #95ca2
1 Answer
Explanation:
Your goal here is to figure out how much heat is needed to increase the temperature of
87^@"C" - 44^@"C" = 43^@"C"87∘C−44∘C=43∘C
The key here is the specific heat of water, which tells you the amount of heat needed to increase the temperature of
Use the specific heat of water to determine the energy needed to increase the temperature of
55 color(red)(cancel(color(black)("g"))) * overbrace("4.184 J"/(1color(red)(cancel(color(black)("g"))) * 1^@"C"))^(color(blue)("the specific heat of water")) = "230.12 J"""^@"C"^(-1)
This tells you that in order to increase the temperature of
Consequently, you can say that in order to increase the temperature of the sample by
43 color(red)(cancel(color(black)(""^@"C"))) * overbrace("230.12 J"/(1color(red)(cancel(color(black)(""^@"C")))))^(color(blue)("for 55 g of water")) = color(darkgreen)(ul(color(black)("9,900 J")))
of heat. The answer is rounded to two sig figs.
