How to Convert Mass Into Mole
Set up your equation., Substitute any given values., Solve the equation and cancel out the units.
Step-by-Step Guide
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Step 1: Set up your equation.
The equation you'll need is n=mM{\displaystyle n={\frac {m}{M}}}, or the numbers of moles n{\displaystyle n} is equal to the mass m{\displaystyle m} divided by the molar mass M{\displaystyle M}. , For example, if you have to calculate how many moles go into 74 g of hydrogen peroxide, you'll get n=74g37gmol{\displaystyle n={\frac {74g}{37{\frac {g}{mol}}}}}, since you have 74 g of hydrogen peroxide, and the molar mass is 37 gmol{\displaystyle {\frac {g}{mol}}}. , Gram is both in the numerator and denominator, so that cancels out.
Mole is in a denominator in a denominator, which leaves you with mole in the numerator.
The final answer is n=7437mol=2mol{\displaystyle n={\frac {74}{37}}mol=2mol}. -
Step 2: Substitute any given values.
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Step 3: Solve the equation and cancel out the units.
Detailed Guide
The equation you'll need is n=mM{\displaystyle n={\frac {m}{M}}}, or the numbers of moles n{\displaystyle n} is equal to the mass m{\displaystyle m} divided by the molar mass M{\displaystyle M}. , For example, if you have to calculate how many moles go into 74 g of hydrogen peroxide, you'll get n=74g37gmol{\displaystyle n={\frac {74g}{37{\frac {g}{mol}}}}}, since you have 74 g of hydrogen peroxide, and the molar mass is 37 gmol{\displaystyle {\frac {g}{mol}}}. , Gram is both in the numerator and denominator, so that cancels out.
Mole is in a denominator in a denominator, which leaves you with mole in the numerator.
The final answer is n=7437mol=2mol{\displaystyle n={\frac {74}{37}}mol=2mol}.
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Ann Ford
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