# 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?

##### 1 Answer

301 K

#### Explanation:

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:

Where

Now, water can be assumed to weigh 1 kg per liter, thus 5.68 litres=5.68 kg of water.

Hence:

So we increased or temperature by 18 degrees Kelvin, hence our final temperature is: