Answer:
Δt = 90.00 °C
Explanation:
The nutritional information on a cereal box shows that one serving of dry cereal has 90 calories (actually kilocalories) so
The amount of heat is 90.00 Kcal
Q= 90000 cal
The mass of water is m = 1 kg = 1000 g
There is a formula that relates the amount of heat, the mass and the temperature variation :
Q = C.m.Δt
Where Q is the amount of heat, m is the mass,Δt is the temperature variation and finally C is the Specific heat (in this case C=Water specific heat)
C(Water) = 1.00 (cal/g.°C)
Q = C.m.Δt
90000 cal = 1.00 (cal/g.°C). 1000 g .Δt
Solving, Δt = 90.00 °C
Be aware of having all in congruent units. Also, we are supposing that water is in solid state.Otherwise, C(Water) ≠ 1.00 (cal/g.°C)
Answer:
90 degrees Celsius
Explanation:
A calorie is the amount of energy needed to raise the temperature of 1 gram of water 1 degree Celsius.
A kilocalorie is 1000 calories
90kilocalories = 90 x 1000 = 90000 calories
1 kg = 1000 grams
temperature = calories/ grams = 90000/1000 = 90 degrees Celsius
