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Answer :
In order convert the mass of a substance to its number of moles The conversion factor is the reciprocal of the molecular weight of the substance. Hence, for the given element in the problem- potassium, the equivalence factor is d. (1 mol K/39.10 g K).
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Rewritten by : Jeany
Answer: (38.2 g K/39.10 g K)
Explanation:
To convert given masses into moles we use the formula :
Moles of K=[tex]\frac{\text{ given mass of K}}{\text{ molar mass of K}}[/tex]
Given:
Mass of K= 38.2 grams
Molar mass of K= 39.10 g/mol
Putting in the values in the given formula, we get:
Moles of K= [tex]\frac{38.2g}{39.10g/mole}=0.98moles[/tex]
Thus the moles are 0.98 moles.
