148.0 g of water is heated using 67.0 W of power,with perfect efficiency.How long will it take to raise the temperature of the water from 15ºC to 25ºC?
A)92 s
B)5.3 s
C)22 s
D)410,000 s

Question

Quizplus · Accepted Answer

The energy required to raise the temperature of water is calculated using the formula Q = mcΔT. For 148.0 g of water (0.148 kg), with a specific heat capacity (c) of 4,186 J/kg°C, and a temperature change (ΔT) of 10°C, Q = 0.148 * 4186 * 10 = 6196.8 J. With a power of 67.0 W, time (t) is Q/P = 6196.8 J / 67.0 W = 92.5 s, approximately 92 s.

1480 G of Water Is Heated Using 67