<em><u>Given</u></em>
Weight of pottasium fluoride (KF) = 29 gms
<em><u>To find</u></em>
Number of moles of pottasium fluoride = ?
<em><u>Solution</u></em>
we know that molar mass of KF = 58.0967 g
Now,

<em>Number of moles = 29/58 = 0.5 moles</em>
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Answer:
Sulfur has the same amount, like all the other elements in group 16, has six valence electrons.
Explanation:
I think they are called Faults.
Answer:
KE = 1/2 mv^2=0.5x 10 X 20^2= 800
Explanation