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:

why do the isotopes of a particular element behave differently in nuclear reactions but the same in chemical reactions? chemical reactions involve changes to electrons in an atom; isotopes do not differ in electrons, and so they react the same way during chemical changes.

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