According to le chatelier’s principle, which statement is true?
a. the equilibrium constant is unchanged by temperature changes.
b. the equilibrium constant changes with a change in temperature.
c. the equilibrium constant increases with the concentration of reactants.
d. the equilibrium constant decreases with the concentration of products.

B. The equilibrium constant changes with a change in temperature.

Explanation:

Equilibrium constant is the ratio of the concentration of products to the concentration of reactants each term raised to its stochiometric coefficients.

The equilibrium constant in terms of concentration is written as :

Thus equilibrium constant will not change with increase in concentration of products as concentration of reactants will be increased proportionally and ratio remains same.

Equilibrium constant will not change with increase in concentration of reactants as concentration of products will be increased proportionally and ratio remains same.

Equilibrium constant changes with a change in temperature.

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)

answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.