The student measured the mass of four of the potato sticks using an electronic balance.
(search at the google about an electronic balance)
the student left each potato stick in one of four different liquid for 5 hours.
$ distilled water
@0.1 mol per dm³ sodium chloride solution(salt)
@0.5 mol per dm³sodium chloride solution
@1.0 mol per dm³sodium chloride solution
after 5 hours they measured the mass again and calculated the change in mass
(i) predict which of the liquid would cause the largest decrease in mass of a potato stick.
(after you finish answer (i),i will write question (ii) )
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sorry if this did not , have a great day!

bacteria could be both, harmful and to us. harmful bacteria could make us sick and probably even by getting the chances of getting a disease, but good bacteria fight it off with your immune system. there is always bacteria everywhere we go. we need to make sure to wash our hands after using the restroom, before eating, after eating, after petting an animal too. so you see, bacteria is everywhere and is harmful or . i hope this . : ) : ) : )