Which of the following are isotopes? a u-235, br-81 b mg-12, mn-55 c cl-35, cl-37 d h-1, h-1

C) Cl-35 & Cl-37

Explanation:

Isotope: a form of an element that differs only in the number of neutrons in the nucleus.

A & B are wrong because U and Br are two different elements, so are Mg and Mn.

D is a trick question because H-1 is the same as H-1, therefore they can't be isotopes.

a plasma is a warm ionized gasoline consisting of approximately equal numbers of definitely charged ions and negatively charged electrons. the characteristics of plasmas are notably unique from the ones of ordinary neutral gases in order that plasmas are considered a awesome "fourth kingdom of remember."

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