Astudent 600 ml cup of cocoa gets cold. it was only 25°c. he put it in the microwave. how many calories must transfer to the cocoa to bring it up to 70°c

To get the answer, you must know first the formula for heat.

Heat = mass X specific heat X change in temp 

We know that the mass is 600

Specific heat is 1

And the change in temperature is 70 – 25 which is 45.

Now plugging in those values:

Heat = 600 x 1 x 45 = 27,000 calories

Note: calorie is a unit of heat

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inspire others.

commitment and passion.

good communicator.

decision-making capabilities.

accountability.

delegation and empowerment.

creativity and innovation.

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answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.