The Student Room Group

Finding the mass of salt produced

Calculate the mass of salt produced when 5.00g of potassium is reacted with 0.70L of oxygen gas at 0 degrees C and 100kPa
First write out a balanced equation.
Then work out the number of moles of the reactants. Use the ideal gas law formula for the oxygen.
Decide which reactant is the limiting factor, then calculate the moles of product.
Finally convert the moles of product to mass.

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