LAPC How Much Energy in Joules Will It Take to Change 36 G of Ice at -18 C to Steam at 140 C

Question Description

EXAMPLE: NO WORK NO CREDIT How much energy in Joules will it take to change 36.0g of ice at -18.0oC to steam at 140.oC? Given: Heat of fusion=335. J/g, heat of vaporization= 2260.J/g, Specific heat of water=4.186J/gCo, the specific heat of ice= the specific heat of steam=2.09 J/gCo

answer: q= 36.0 g x 2.09 J/g x (0- -18)= 1350

q= Hf x m= (335. J/g) (36.0 g) = 12,100

q= 36.0 x 4.186 x 100= 15,100

q= 2260 x 36= 81400

q= 36.0 x 2.09(140-100)= 3010

Answer= 112,960

PLEASE ANSWER THE FOLLOWING TWO QUESTIONS WITH WORK INCLUDED LIKE ABOVE.

1. How much energy in Joules will it take to change 50.0g of ice at 0oC to steam at 135oC?

Given: Heat of fusion=335. J/g, heat of vaporization= 2260.J/g, Specific heat of water=4.186J/gCo, the specific heat of ice= the specific heat of steam=2.09 J/gCo

2. How much energy in Joules will it take to change 50.0g of ice at -20oC to steam at 100oC?

Given: Heat of fusion=335. J/g, heat of vaporization= 2260.J/g, Specific heat of water=4.186J/gCo, the specific heat of ice= the specific heat of steam=2.09 J/gCo

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