A 200-L Electric Water Heater Uses 2 $23 ^ { \circ } \mathrm { C } \text { to } 75 ^ { \circ } \mathrm { C } \text { ? }$

A 200-L electric water heater uses 2.0 kW. Assuming no heat loss, how many hours would it take to heat the water in this tank from $23 ^ { \circ } \mathrm { C } \text { to } 75 ^ { \circ } \mathrm { C } \text { ? }$ The specific heat of water is $4186 \mathrm {~J} / \mathrm { kg } \cdot \mathrm { K }$ and its density is $1000 \mathrm {~kg} / \mathrm { m } ^ { 3 }$

A) 6.0 hours
B) 5.0 . hours
C) 7.0 hours
D) 8.0 hours

Correct Answer:

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