One of the following are positional isomers. a) C, H,OH, CH3 - 0 - CH3
b) CH3COOH, HCOOCH;
c) CH2 = CH – CH2 - CH3 , CH3 – CH = CH - CH;
d) CH3 -CH, CH, OH, CH3 - CH - CH3
OH
e) c&d​

6what is the importance of water on earth? a) it keeps the top layer of the geosphere cool b) it allows life to exist c) it provides ice at the poles d) it creates earth's blue color from space

Why do cells appear different in distilled water than they do in 10% salt water?

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.