Consider the following unbalanced reaction:
$S c (N O_{3})_{3 (a q)} + 3 N a O H_{(a q)} \to S c (O H)_{3 (s)} + 3 N a N O_{3 (a q)}$
If two moles of scandium nitrate and three moles of sodium hydroxide react, how many moles of ions are present at the completion of this chemical reaction?
Assume that insoluble substances produce no measurable amount of ions.

6

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10

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16

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20

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Solution

The correct option is B $10$
9 mol of $N a N O_{3}$ and 1 mol of $S c (O H)_{3}$
so total mol is 10

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The correct option is B 109 mol of NaNO3 and 1 mol of Sc(OH)3so total mol is 10

The correct option is B $10$
9 mol of $N a N O_{3}$ and 1 mol of $S c (O H)_{3}$
so total mol is 10