You are walking on a beach and find a mystery piece of metal. You take it back to your lab and measure its mass to be 0.5 kg. In

Question

3 years ago

15

order to heat the metal 1 degree K, you must add 115 J of heat. Identify the metal. q =mCΔT
A) Brass
B) Copper
C) Platinum
D) Silver

1 answer:

murzikaleks [220] · Answer 1 · 2022-06-25T16:31:05+03:00

D) Silver

Explanation:

Given parameters:

Mass of metal = 0.5kg

temperature change = 1K

Quantity of heat = 115J

Unknown;

Identity of the metal = ?

Solution:

We first find the specific heat of the unknown metal and compare with the table of specific heat of metals.

C = $\frac{Q}{mΔt}$

C = $\frac{115}{1 x 0.5}$ = 230JKg⁻¹K⁻¹

Comparing this value with the table shows that the metal is silver.

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