Someone help me please i’ll give

Endothermic change

Explanation:

Khan Academy:

"The reactants are at a lower energy level compared to the products—as shown in the energy diagram. Since we are forcing the reaction in the forward direction towards more unstable entities, overall ΔH for the reaction is positive, i.e., energy is absorbed from the surroundings."

- The answer is from a khan academy lesson.

Brainliest appreciated! Hope I helped!

it’s previous models   because when i picked that son of a gun’s answer it was wrong look for previous models because they might make it a different letter  

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