Two hundred grams of a substance requires 18.8 kj of heat to raise its temperature from 25°c to 45°c. use the table to identify the substance.

ammonia

Explanation:

Q= heat gained  = 18.8 kJ

m= mass of the substance = 200 g

c = heat capacity of unknown substance= ? J/g ° C      

Thus the unknown substance is ammonia which has a heat capacity of

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?

the answer is d. 74.02