Answer:
1st:Make an observation
2nd:Ask a question
then you can make a hypothesis
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sin theta equals to cos theta then the value of sin 2 theta
Scientists ask questions, which is the basis for their investigations.
3KOH + H₃PO₄ ----> K₃PO₄ + 3H₂O
3 moles 1 mole
3 moles KOH ------ 1 mole H₃PO₄
X moles KOH ------ 1,56 mol
X = 3×1,56
X = 4,68 moles of KOH
:)