How much heat does 225 g of water gain when its temperature rises from 25°c to 32°c? a. 30.12 kj b. 21.65 kj c. 6.59 kj d. 0.376 kj

C. 6.59 KJ

Explanation:
To solve this question, we will use the following rule:
q = mCΔT
where:
q us the amount of heat gained that we want to calculate
m is the mass of the water = 225 grams
C is the specific heat capacity of the water = 4.184 J / g - C
ΔT is the change in temperature = Tfinal - Tinitial = 32 - 25 = 7 degrees

Substitute with the givens in the above equation to get the amount of heat gained as follows:
q = mCΔT
q = 225 * 4.184 * 7 = 6589.8 Joules = 6.5898 KJ which is approximately choice C.

Hope this helps :)

All the elements are arranged by melting points on the periodic table. in row they go from metals to gasses. in the row from sodium to argon, sodium is more reactive than the one on its right, magnesium.