If 100.0 g of a substance releases 45 kJ of energy as it cools from 13.0°C to –15.0°C, what is the specific heat capacity of the substance?

Explanation:

The formula for expressing the quantity of heat released is expressed as;

Q = mcΔt

m is the mass of the substance = 100g - 0.1kg

c is the specific heat capacity of the substance

Δt is the change in temperature = 13 -(-15) = 28°C

Substitute and get c;

45000 = 0.1c(28)

2.8c = 45000

c = 45000/2.8

c = 16,071.42J/kgK

Hence the specific heat capacity of the substance is 16,071.42J/kgK

answer: a ball

explanation: because it will bounce

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.