Question #d6d72

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Answer 1 · 2017-03-29T01:13:40

$"2 moles"$ .

You have $"196 grams"$ of $"H"_2"SO"_4$ .

We can calculate the molar mass of sulfuric acid by looking at the periodic table.

$"H": "1 g" * "2" = color(red)"2 g"$
$"S": color(red)"32 g"$
$"O": "16 g" * "4"= color(red)"64 g"$
$------$
Total = $color(red)["98 g"$

This means for every $"1 mole"$ of $"H"_2"SO"_4$ , you have $"98 grams"$ of it.

We can use a conversion factor to solve for number of moles in $"196 grams"$ of $"H"_2"SO"_4$ .

$color(white)(aaaaaaaaaaa)(196 cancel"g")/1 * ("1 mole")/(98 cancel"g") = color(orange)["2 moles H"_2"SO"_4$

Answer: 2 moles