The 1H NMR spectrum below corresponds to an unknown compound with the molecular formula C5H8O2. Deduce and draw the structure of the molecule from the data below.

Gymnast always perform on padded mats. how does the mats protect the gymnast

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?

Drug abuse will not lead to physical and psychological dependence. true or false ?