Question #d6d72

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Question #d6d72

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Answer 1 · 2017-03-29T01:13:40

$2 moles$ $"2 moles"$ .

Explanation:

You have $196 grams$ $"196 grams"$ of $H_{2} {SO}_{4}$ $"H"_2"SO"_4$ .

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

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

This means for every $1 mole$ $"1 mole"$ of $H_{2} {SO}_{4}$ $"H"_2"SO"_4$ , you have $98 grams$ $"98 grams"$ of it.

We can use a conversion factor to solve for number of moles in $196 grams$ $"196 grams"$ of $H_{2} {SO}_{4}$ $"H"_2"SO"_4$ .

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

Answer: 2 moles

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Question #d6d72

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