How much energy must be added to a 2-kg piece of aluminum with a specific

heat of 900 J / (kg°C) to increase its temperature from 10°C to 50°C?

O

A. 1,800 J

O B. 900,000 J

O C. 108,000 J

O D. 72,000 J

Question

Biology

Guest

19 November, 08:13

How much energy must be added to a 2-kg piece of aluminum with a specific

heat of 900 J / (kg°C) to increase its temperature from 10°C to 50°C?

O

A. 1,800 J

O B. 900,000 J

O C. 108,000 J

O D. 72,000 J

+3

Answers (1)

Know the Answer?

Bryce Cummings · Answer 1

Answer: 72,000 Joules

Explanation:

Heat Energy Q = Mass M x Specific heat capacity C x change in temperature Φ

Thus, Q = MCΦ

Then, M = 2-kg

C = 900 J / (kg°C)

Φ = 50°C - 10°C = 40°C

Q = 2 x 900 x 40

Q = 72,000 Joules

Thus, it takes 72,000 Joules of energy

How much energy must be added to a 2-kg piece of aluminum with a specificheat of 900 J / (kg°C) to increase its temperature from 10°C to 50°C?OA. 1,800 JO B. 900,000 JO C. 108,000 JO D. 72,000 J

How much energy must be added to a 2-kg piece of aluminum with a specific

heat of 900 J / (kg°C) to increase its temperature from 10°C to 50°C?

O

A. 1,800 J

O B. 900,000 J

O C. 108,000 J

O D. 72,000 J