Zack wants to run an experiment on reaction rates. he designs an experiment testing the reaction rate changes when magnesium and hydrochloric acid react. he decides to run one trial with magnesium ribbon and 10 m hcl. for his second trial, he rolls the magnesium ribbon and reacts it with 20 m chl. in the third trial, zack cut the same amount of magnesium into silvers and reacts them with 30 m chl. what is the problem with zack's design?

Duchenne muscular dystrophy is a serious condition caused by a recessive allele of a gene on the human x chromosome. the patients have muscles that weaken over time because they have absent or decreased dystrophin, a muscle protein. they rarely live past their twenties. how likely is it for a woman to have this condition? a) women can never have this condition.b) one-fourth of the daughters of an affected man would have this condition.c) one-half of the daughters of an affected father and a carrier mother could have this condition.d) only if a woman is xxx could she have this condition.

Iwanna go do something with my ideas? ?

Hemoglobin is a proton that carries oxygen around your body what is hemoglobin made from