A chemist reacts 30.0 mL of 5.6 M HCl with an excess of Mg(OH)2 How many grams of magnesium will be produced

2.042 g

Explanation:

The reaction that takes place is:

First we calculate how many HCl moles were added, using the given volume and concentration:

Then we convert HCl moles into Mg²⁺ moles, using the stoichiometric coefficients:

Finally we convert Mg moles into grams, using its molar mass:

c (diamond),

sio2 (quartz)

1 is the answer to this problem