Nh3 is nitrogen trihydride (ammonia) and bf3 is boron trifluoride. what is the name for alcl3 and why? a) aluminum chloride - it does not have the prefix "tri-" since it is ionic. correct answer b) monoaluminum trichloride - there is only one aluminum and it needs the prefix "mono-". c) aluminum trichloride - it has the prefix "tri-" since it has the same ratio as the other compounds. d) aluminum chloride - ionic compounds do not get a prefix on the first name if there is only one of that element.

idk i’m struggling too

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