Answered

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A banana has 0.42 g of potassium. How many moles of potassium are in a banana ?

Sagot :

quasarJose

Answer:

0.011mole

Explanation:

Given parameters:

Mass of potassium in the banana = 0.42g

Unknown:

Number of moles of potassium in the banana = ?

Solution:

To solve this problem, we use the expression below:

     Number of moles  = [tex]\frac{mass}{molar mass}[/tex]  

Molar mass of K  = 39g/mol

   Number of moles  = [tex]\frac{0.42}{39}[/tex]   = 0.011mole

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