A student mixes two water solutions with an initial temperature of 25 degrees Celsius to form a final solution with a mass of 65.0 g at 30.0 degrees Celsius. What is the heat change in kJ for this reaction

Heat change = 3.77kJ

Explanation:

T1 = 25°C

Mass = 65g

T2 = 30°C

specific heat capacity of water = 4.184J/g°C

Heat energy = ?

Heat energy = MC∇T

Heat energy (Q) = MC(T2 - T1)

Q = 65 * 4.184 * (30 - 15)

Q = 251.04 * 15

Q = 3765.6J

Q = 3.77KJ

The heat change during the reaction was 3.77kJ

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.

a:

by the combination of an unlimited number of elements