The balanced combustion reaction for c 6 h 6 is 2 c 6 h 6 ( l ) 15 o 2 ( g ) ⟶ 12 co 2 ( g ) 6 h 2 o ( l ) 6542 kj if 7.700 g c 6 h 6 is burned and the heat produced from the burning is added to 5691 g of water at 21 ∘ c, what is the final temperature of the water

Explanation:

To calculate the moles, we use the equation:

According to stoichiometry :

2 moles of releases = 6542 kJ of heat

0.9858 moles of  release = of heat

Thus heat given off by burning 7.700 g of  will be absorbed by water.

Q = Heat absorbed= 3224kJ = 3224000J   (1kJ=1000J)

m= mass of water = 5691 g

c = specific heat capacity =

Initial temperature of the water = = 21.0°C

Final temperature of the water =  = ?

Putting in the values, we get:

The final temperature of the water is

answer; i believe the correct answer is (solid gold);

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.