1. What is the specific heat of a substance that requires 270 J of energy to raise the temperature of 4.2 grams by 25°C?

Heat required is mcΔT=100×0.39×50=1950 J

Solve any question of Thermodynamics with:-

Explanation:

This will require  

266.9

k

J

of heat energy.

Explanation:

To calculate the energy required to raise the temperature of any given substance, here's what you require:

The mass of the material,  

m

The temperature change that occurs,  

Δ

T

Once you have all that, this is the equation:

Q

=

m

×

c

×

Δ

T

(

Q

is usually used to symbolize that heat required in a case like this.)

For water, the value of  

c

is  

4.186

J

g

°

C

So,  

Q

=

750

×

4.186

×

85

=

266

858

J

=

266.858

k

J

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.