Question

How much thermal energy is needed to raise the temperature of 4g of water

from 25°C to 75°C if water has a specific heat of 4.186 J/gºC
1. 850,000J
2. 840,000J
3. 740,000)
4. 840)

Answer 1

837.2J

Step-by-step explanation:

m=4g,c=4.186 J/g/C, change in temperature=75-25=50 degree Celsius Q=?

using the formula

Q=mxcx change in theta

Q=4x4.186x50

Q=837.2J