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

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b. solenoid

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if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.

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