How much heat is needed to raise the temperature of 9g of water by 19oc?

need answer and units

This will need  715.806 J of heat energy to raise the temperature.

Explanation:

To calculate how much heat is needed to raise the temperature of any substance, you need:

The mass of the substance,  m, which for you is 9g

The temperature change that occurs,  ΔT, which for you is 19ºC.

The specific heat capacity of the substance,  c  (which you can look up here: http://www2.ucdsb.on.ca/tiss/stretton/Database/Specific_Heat_Capacity_Table.html

), (It is the amount of heat required to raise 1 gram of that substance by 1°C.)

For water, the value of  c  is  4.186J/g°C

Then, this is the equation you need:

ΔT

Where Q is the heat needed

So,  

You need 715.806J to raise the temperature of water by 19ºC

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.

there are no correct statementd on the list of choices you provided.