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26-09-2018
Chemistry

contestada

how much heat is needed warm 65.34 g of water from 18.43 to 21.75

Respuesta :

AskewTronics AskewTronics

05-10-2018

Given that

Mass of water = 65.34 g

Amount of heat = mass of water * specific heat (temperature change

)

= 65.34 g * 4.184 J / g-C ( 21.75-18.43 )C

= 907.63 J

= 0.908 KJ

And

1 cal = 4.186798 J

907.63 J * 1 cal / 4.186798 J =216.78 cal

Or0.218 kcal

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