DONT ANSWER FIGURED IT OUT MYSELF TOOK TO LONG! How much energy is required to melt...

Question

Question

DONT ANSWER FIGURED IT OUT MYSELF TOOK TO LONG!

How much energy is required to melt 25.0 grams of ice at 0.0 degrees centigrade and convert it to water at 50.0 degrees centigrade?

Only one answer is correct:

A. 14800 cal

B. 3250 cal

C. 2850 cal

D. 2050 cal

Answer 1

Answer #1

Q = q1 + q2

Q = m $\Delta$ H_fus + mC_water $\Delta$ T

$\Delta$ T = 50

Q = (25.0 x 334) + (25.0 x 4.184 x 50)

Q = 8350 + 5230

Q = 13580 J

convert joules to Ca

Q = 13580 J = 3245 Cal

answer = B = 3250 Cal (closest value)

Answer 2

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