As the temperature of a gas is increased, the average kinetic energy of its molecules
A decreases
B. increases
Cremains the name

B- Increase

Explanation:

In the event that the temperature is increased, the normal speed and dynamic energy of the gas atoms increment. In the event that the volume is held steady, the sped up the gas particles brings about more incessant and more powerful crashes with the dividers of the compartment, hence expanding the pressing factor

it's all four options.

as given the equation is

2al + 6 hcl > 2 alcl3 + 3 h2(g)

as per equation two moles of aluminum reacts with six moles of hcl to give two moles of alcl3 and three moles of hydrogen gas

given: three moles of al are present and 7 moles of hcl

for three moles of aluminum nine moles of hcl will be required

however as 7 moles of hcl are present so the limiting reagent is hcl

hcl is going to decide the number of moles of product formed

when six moles of hcl are present = 3 moles of h2 are formed

when one mole of hcl is present == 3/6 mole sof h2 will be formed

when 7 moles of hcl are present = 3 x 7/ 6 moles of h2 will be formed = 3.5 moles of h2