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3 years ago

Revolutionary War soldiers made their own musket balls by melting lead (Pb). How much energy

Biology

1 answer:

Sati [7]3 years ago

3 0

Answer:

Q = 813.12 j

Explanation:

Given data:

Mass of lead = 21 g

Initial temperature = 25°C

Final temperature = 327.5°C

Amount of heat absorbed by lead = ?

Solution:

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = T2 - T1

ΔT = 327.5°C - 25°C

ΔT = 302.5°C

Specific heat capacity of lead = 0.128 j/g.°C

Q = m.c. ΔT

Q = 21 g. 0.128 j/g.°C.302.5°C

Q = 813.12 j

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Answer:

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