How many moles are there in 0.67 L of a 0.50 M KBr solution?

0.335 moles

Explanation:

Given that,

Amount of moles of KBr solute (n) = ?

Volume of KBr solution (v) = 0.67 L

Concentration of KBr solution (c) = 0.50M

Since concentration (c) is obtained by dividing the amount of solute dissolved by the volume of solvent, hence

c = n / v

make n the subject formula

n = c x v

n = 0.50M x 0.67L

n = 0.335 moles

Thus, there are 0.335 moles of KBr in 0.67 L of a 0.50 M KBr solution

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particle   p is an electron and particle q is a neutron