Use the drop-down menus to identify the type of structure being described in each statement. Snakes have remnants of back legs.
Bats have the same arm bone structure as cats,
Frogs, humans, and whales have a backbone.
Bats and moths both have wings, but not a common ancestor.

Based on the equation and the information in the table, what is the enthalpy of the reaction?

The boiling point of propanoic acid is higher than that of 1-butanol because: propanoic acid has a higher molecular weight than 1-butanol. propanoic acid is more soluble in water than 1-butanol. propanoic acid is a better hydrogen bond donor than 1-butanol. propanoic acid forms hydrogen bonded dimers and 1-butanol does not. 1-butanol forms hydrogen bonded dimers and propanoic acid does not.

11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg