Which of the following statements about a concentration cell is false? Group of answer choices The spontaneous reaction is always from the more dilute solution to the more concentrated solution. The concentration decreases in the more concentrated half-cell. Both half-cells are composed of the same species. The concentration increases in the less concentrated half-cell. E° is always zero in a concentration cell.

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

idk what is it? is this a question that you know the answer or u dont

nuclear fission produces elements that are heavier than helium.

the elements that are used in nuclear fission and their products are much heavier than helium.