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Elena-2011 [213]
3 years ago
13

What is the specific heat (J/g C)of a metal who’s temp increases by 3.0 C when 17.5 g of metal was heated with 38.5 J

Chemistry
1 answer:
disa [49]3 years ago
8 0

Answer:

0.733 J/g °C

Explanation:

<u>Step 1 : Write formule of specific heat</u>

<u />

Q = mc Δ T

with Q = heat transfer (J)

with m = mass of the substance

with c = specific heat ⇒ depends on material and phase ( J/g °C)

Δ T = Change in temperature

<u />

in this case :

Q = 38.5 J

<u>m = 17.5g</u>

<u>c= has to be determined</u>

<u>Δ T = 3 (°C)</u>

<u />

<u>Step 2:  Calculating specific heat</u>

⇒ via the formule Q = mc Δ T

38.5 J = 17.5g * c * 3

38.5 = 52.5 *c

c = 38.5 / 52.5

c = 0.733 J/g °C ⇒ 0.733 is reported to three significant digits due to the precision.

The specific heat of this metal is 0.733 J/g °C

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