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Petunia needs 92.98 grams of potassium hydroxide (KOH) to run a reaction in class. How many moles of potassium hydroxide does she need? Please round your answer to two digits after the decimal point, and remember to include correct, complete units (including substance formula).

Sagot :

In order to find the number of moles of KOH, we need to use the given mass in the question, 92.98 grams and the molar mass of KOH, 56.1g/mol:

56.1g = 1 mol

92.98g = x moles

56.1x = 92.98

x = 92.98/56.1

x = 1.66 moles of KOH in 92.98 grams

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