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(c) A Piece of Potassium Has a Mass of 1.564 G. (i) Calculate the Number of Moles in This Piece of Potassium. (relative Atomic Mass of

Question

(c) A piece of potassium has a mass of 1.564 g. (i) Calculate the number of moles in this piece of potassium. (relative atomic mass of potassium=39.1) __ (ii) The piece of potassium was reacted with water. The total volume of the solution produced was 5.0dm^3 Calculate the concentration of the solution produced in moldm^-3 If you did not get an answer for (c)(i) use the value 0.06 for the number of moles. (2)

Answer

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Verificación de expertos
Malcolm Veteran · Tutor for 11 years

Answer

## Step 1: Calculate the number of moles in the piece of potassium. ## Step 2: Calculate the concentration of the solution produced.

Explanation

## Step 1: Calculate the number of moles in the piece of potassium.The number of moles in a given mass of a substance can be calculated using the formula:### where:- is the number of moles,- is the mass of the substance, and- is the molar mass of the substance.Given that the mass of the potassium ( ) is 1.564 g and the relative atomic mass of potassium ( ) is 39.1 g/mol, we can substitute these values into the formula to find the number of moles.## Step 2: Calculate the concentration of the solution produced.The concentration of a solution can be calculated using the formula:### where:- is the concentration of the solution,- is the number of moles of solute, and- is the volume of the solution.Given that the number of moles of potassium ( ) is the result we obtained from step 1 and the volume of the solution ( ) is 5.0 dm³, we can substitute these values into the formula to find the concentration of the solution.