An experiment similar to ours was completed by a group of 7th grade students there were 8 times recorded 7.48 7.45 7.90 7.37 7.25 7.40 7.55 7.60
the distance traveled was 30 meters
what was the average time of all the times recorded ?
what was the average velocity ?
if the mass was 432 grams what was the ke developed ?

- aluminum and copper chloride.

- the chloride ion to separate the aluminum from the oxygen so that the aluminum can react with the copper ions (and the water molecules).

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

the correct answer would be b) volume versus temperature, because they are also directly proportional.