All faculty members are happy to see students each other. dumbledore is particularly with hermione. though, it should be mentioned that students should not simply copy off each other. you will not learn anything that way. snape glares at ron slouches in his chair. snape thinks it’s time for a harder problem. how many milligrams of magnesium reacts with excess hcl to produce 31.2 ml of hydrogen gas at 754 torr and 25.0◦c. the hydrogen is produced by the following reaction: mg(s) + 2hcl(aq) → mgcl2(aq) + h2(g) express your answer in milligrams

Explanation:

Hello,

Based on the given chemical reaction, as 31.2 mL of hydrogen are yielded, one computes its moles via the ideal gas equation under the stated conditions as shown below:

Now, since the relationship between hydrogen and magnesium is 1 to 1, one computes its milligrams by following the shown below proportional factor development:

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the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.