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poizon [28]
3 years ago
10

Scientists have measured and recorded the average rainfall of an area over several years to see if there is a pattern. Which kin

d of investigation does this best describe? A. controlled experiment B. systematic observation C. field study D. simulation
Chemistry
1 answer:
tia_tia [17]3 years ago
8 0
The correct answer is d
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<h3><u>Answer; </u></h3>

=10.38  moles KOH  

<h3><u>Explanation</u>;</h3>

The balanced equation.  

6KOH + Al2(SO4)3 --> 3K2SO4 + 2Al(OH)3  

From the equation;

1 mole of aluminum sulfate requires 6 moles of potassium hydroxide.  

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Moles of KOH;

1 mol Al2(SO4)3 : 6 mol KOH = 1.73  mol Al2(SO4)3 : x mol KOH  

Thus; x =  (6 × 1.73)

              <u> =10.38 moles KOH </u>

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