The ice absorbs heat from the cup . And the ice loses its composition thus melting .
Answer:
Q = 797.5 cal
Explanation:
Given that,
Mass of iron, m = 50 g
The temperature rises from 55°C to 200°C.
We need to find the heat needed to raise the temperature. The heat raised is given by :

Put all the values,

So, 797.5 calories of heat is needed.
One is rows the other is columns
Answer:
Approx. 8 grams of KNO3 will not dissolve
Explanation:
According to the curve at 20 degrees C only 32 grams of KNO3 can dissolve in 100 grams of water meaning if you hvae 40 grams of KNO3 in water at 20 degrees C ; 40-32= 8
Answer:
8.759×10-11
Explanation:
it may be to sure try to convert the answer