2. Um medicamento contém 130 mg de ácido acetilsalicílico (C. H.0.) por comprimido. Quantas moléculas dessa substância há em cada comprimido? (DADOS: número de Avogadro = 6,0
X1023 mol-'; massas atômicas relativas: C = 12,0; O = 16, H = 1,0). (1,0 ponto)
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Ineed with question three. i don't understand how i'm supposed to achieve 3 marks.

Atourist boat is used for sightseeing in a nearby river. the boat travels 2.4 miles downstream and in the same amount of time, it travels 1.8 miles upstream. if the boat travels at an average speed of 21 miles per hour in the still water, find the current of the river.

Georgia needs to buy flea treatment for her dog. pet store 1 is offering the flea treatment for 40 percent off plus an additional 25 percent off their regular price of $33. pet store 2 is offering the same flea treatment for 55 percent off plus an additional 5 percent off their regular price of $34. which location is offering the better price and how much cheaper is it? the flea treatment is $0.31 cheaper at pet store 2. the flea treatment is $1.05 cheaper at pet store 2. the flea treatment is $2.05 cheaper at pet store 1. the flea treatment is $2.36 cheaper at pet store 1.