Jim shot an arrow at the target but missed. In fact, the arrow was nowhere in sight! "Don't worry" said Jim's buddy. "It is probably lying on the ground on the other side of the target." "How do you know that?" asked Jim. "Because of ", answered his buddy.

How are isotopes of the same chemical element alike? how are they different?

Which ocean zone has the most abundant primary producer and why a) the abyssopelagic zone ,du to the absence of light and cold water temperatureb) the bathypelagic zone, due to the absence of light and cold water temperaturec) the mesopelagic zone ,due to uts high light availability and warm water temperature d) the epipelagic zone, due to its high light availability and warm water temperature

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?