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

b) nuclear ive learned that in a pedtrodic table

here is table 2-2:

country

percent of eligible voters that voted

rank

united states

44.9%

138

canada

60.1%

107

costa rica

84.6%

14

hungary

66.9%

82

japan

57.0%

118

egypt

27.7%

159

south africa

85.5%

10

ans is no, the data set cannot be plotted as a single circle graph