What’s the final temperature in Kelvin of 1.5 gallons of water, with an initial temperature of 50 Fahrenheit, if you add 432 kJ to the water?
I converted into standard units for the solutions. (I approximated gallons and assumed you meant US gallons)
5.68 litres= 1 US gallon
50 Fahrenheit=10 Celcius= 283 Kelvin, our starting temperature.
Using the equation:
Now, water can be assumed to weigh 1 kg per liter, thus 5.68 litres=5.68 kg of water.
So we increased or temperature by 18 degrees Kelvin, hence our final temperature is: