When magnesium reacts with hydrochloric acid, hydrogen gas is produced. The amount of gas produced is dependent upon the concent
ration of hydrochloric acid. Below is the data for a reaction with 1 molar hydrochloric acid. Determine which of the choices shows possible data for a reaction with 2 molar hydrochloric acid. time (mins) 0 123TLON8S 4 5 6 7 9 10 1 M acid hydrogen (cm³) ARANY 17 ATE 230VEL TEEN 0 14 24 31 36 41 44 46 47 48 48
1 answer:
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Answer: There are 0.000043 moles of melatonin.
Explanation:
According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number of particles.
To calculate the moles, we use the equation:
given mass = 10 mg = 0.01 g
molar mass of = 232.28 g
Thus there are 0.000043 moles of melatonin