soniamartinez2162 soniamartinez2162

22-05-2020
Chemistry

contestada

How much heat is lost when a 692 g piece of aluminum cool from 176°C to 85°C? The specific heat of aluminum is 0.125 cal/g°C.

Respuesta :

aabdulsamir aabdulsamir

30-05-2020

Answer:

Heat loss is -7871.5J

Explanation:

Mass = 692g

Initial temperature (T1) = 176°C

Final temperature (T2) = 85°C

Specific heat capacity of Al = 0.125J/g°C

Heat energy = ?

Q = mc∇t

Q = heat energy

M = mass of substance

C = specific heat capacity of substance

∇t = change in temperature of substance = T2 - T1

Q = mc∇t

Q = 692 × 0.125 × (85 - 176)

Q = 86.5 × -91

Q = -7871.5J

The heat loss is -7871.5J or -7.87kJ

Answer Link

Otras preguntas

Study the diagram below and answer these questions 1-6: 1) There are ___?___ electrons in the n = 1 shell. 2) There are ___?___ electrons in the n = 2 shell. 3

If 2/3 = x/y, then which of the following must be true? (2 + x)/3 = (x + 2)/y 3/2 = x/y (2 + 3)/3 = (x + y)/y (2 + 1)/3 = (x + 1)/y

how and why paying a minimum balance and missing a payment can each impact the final cost of the a purchase

Mr. Burn class is taking a field trip to the planetarium . The trip will cost 27

for each student . There are 18 students in his class Part A Round each fac

Most states consider a BAC of _____, or greater, legal intoxication. This number is actually much lower for teenagers. 10 perccent .05 percent .08 per

Which statement is true about discontinuities of the function ?

slope is 1 and (-2,-1) is on the line whats the equation in point slope form?

what is eqivlent to 3 1/3

Michael is using a number line to evaluate the expression –8 – 3. After locating –8 on the number line, which step could Michael complete to evaluate the expr

Succession planning requires making forecasts of in three steps: ________, develop inside candidates, assess and choose those who will fill the key position.