Question

What will the change in temperature be when 90 J are applied to 15 g of gold. (Cgold = 0.126 J/gºC)

Round your answer to the nearest whole number.
°C
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I 17

Answer 1

48 °C

Step-by-step explanation:

q = 90J

m = 15 g

C = 0.126 J/gºC

q = mct

90 = (15)(0.126)t

t = 47.62 °C = 48 °C

Answer 2

Step-by-step explanation:

Formula

E = m * c * Δt

Δt is what you seek.

Givens

E = 90 joules

m = 15 grams

c = 0.126

Solution

90 = 15 * 0.126 * Δt Divide by 15

90/15 = 15/15 * 0.126 * Δt

6 = 0.126 * Δt Divide by 0.126

6/0.126 = Δt

47.619 = Δt

Δt = 48 oC