1. Calculate the amount of energy absorbed when 10 g water at 86 C turns completely to steam vapor at 100C 2. Calculate the amount of energy released when 10 g water at 72 C freezes completely at 0C

The amount of energy absorbed when 10 g water at 86 C turns completely to steam vapor at 100 C is 584.76 J

The amount of energy released when 10 g water at 72 C freezes completely at 0 C is 3,012.48 J

Explanation:

Sensible heat is the amount of heat that a body can receive without affecting its molecular structure. If the molecular structure does not change, the state (solid, liquid, gas) does not change. Since the molecular structure does not change, a change in temperature is observed.

In other words, the heat that produces a change in the temperature of a substance without any changes in its physical state (phase change) is called sensible heat.

The equation that allows calculating this type of heat exchange is:

Q = c * m * ΔT

where Q is the heat exchanged by a body of mass m, constituted by a substance of specific heat c and where ΔT is the change in temperature.

1. In this case, you know:

Replacing:

Q= 4.184 *10 g*14 C

Solving:

Q= 584.76 J

The amount of energy absorbed when 10 g water at 86 C turns completely to steam vapor at 100 C is 584.76 J

2. In this case, you know:

Replacing:

Q= 4.184 *10 g*(-72) C

Solving:

Q= -3,012.48 J

The amount of energy released when 10 g water at 72 C freezes completely at 0 C is 3,012.48 J

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation:

it means there are 3 atoms of oxygen