Achemist carefully measures the amount of heat needed to raise the temperature of a 894.0g sample of a pure substance from −5.8°c to 17.5°c . the experiment shows that 4.90kj of heat are needed. what can the chemist report for the specific heat capacity of the substance? round your answer to 3 significant digits.

The chemist will report the specific heat capacity of the substance as  0.235 J/g K.

Explanation:

Mass of the sample = m = 894.0 g

Initial temperature of the sample =

Final temperature of the sample =

Change in temperature =

Specific heat capacity of the substance = c

Heat required to raise the temperature of a 894.0g sample = Q

Q = 4.90kJ = 4900 J

The chemist will report the specific heat capacity of the substance as  0.235 J/g K.

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8