How many grams of water will absorb a total of 2400 joules of energy when the temperature changes from 10.0°C to 30.0°C?
Chemistry
pandagirl5030
Question
How many grams of water will absorb a total of 2400 joules of energy when the temperature changes from 10.0°C to 30.0°C?
1 Answer

1. User Answers anfabba15
Answer:
28.7 grams of water
Explanation:
Calorimetry problem:
Q = C . m . ΔT
2400 J = 4.18 J/g°C . m . (30°C  10°C)
2400 J = 4.18 J/g°C . m . 20°C
2400J = 83.6 J/g . m
2400J / 83.6 g/J = m
28.7 g = m