Part a) theobromine, c7h8n4o2, is a component of chocolate. it is mildly diuretic, is a mild stimulant, and relaxes the smooth muscles of the bronchi in the lungs. because dogs metabolize it more slowly than humans, theobromine is very toxic to dogs.
if there are 0.064 g of theobromine in a 43 g chocolate bar, how many moles of theobromine are there?
a) 1.5 x 10−3 moles
b) 3.55181 x 10−4 moles
c) 3.6 x 10−4 moles
d) 12 moles
part b) calculate the molarity (m) of 151.1 g of h2so4 in 1.405 l of solution.
express your answer to four significant figures.
part c) sodium hydroxide, naoh, is a strong base that is used in industrial synthesis and processes such as making paper.
what is the mass of 2.30 ×1022 molecules of naoh (molar mass = 40.0 g/mol)?
express the mass in grams to three significant figures.