Experiment #5: Super Microbes One thing is for sure, you don't want to catch a superbug in space! In 2006, astronauts
brought samples of salmonella (the bacteria responsible for food poisoning) into the
low-gravity environment of the ISS in order to learn how the amount of gravity affects the
virulence (harmfulness) of salmonella. According to researchers, the space salmonella
was "tricked" into behaving as if it were in the human gut, causing it to become 3 to 7
times more virulent than Earth salmonella. Yikes!
Independent Variable:
Dependent Variable:
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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