What amount of heat is required to raise the temperature of 25 grams of copper to cause a 15ºc change? the specific heat of copper is 0.39 j/gºc.

146.25 J heat is require to cause the change of 15 °C.

Explanation:

Specific heat capacity:

It is the amount of heat required to raise the temperature of one gram of substance by one degree.

Formula:

Q = m × c × ΔT

Q = heat or energy in joule

m = mass of substance

c = specific heat of substance

ΔT = change in temperature

Given data:

Mass of copper = 25 g

Temperature change =ΔT= 15 °C

Specific heat of copper = 0.39 J/g.°C

Energy or joules require to increase the temperature Q = ?

Solution:

Q = m × c × ΔT

Q = 25 g × 0.39 J/g .°C × 15 °C

Q = 146.25 J

The answer is 150 J based on the math done in the other equation

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.