which of the following statements best defines the percentage yield of a reaction? the ratio of measured yield over actual yield the amount of product measured after a reaction the amount of measured yield over calculated yield the maximum amount of product that can be obtained

The excretory system,need answers for all: )

How many atoms or molecules are there in a mole of a substance?

Pinene is an unsaturated hydrocarbon found in pine resin. if pinene has m+ = 136 and contains 1 double bond(s) and 2 ring(s); what is its molecular formula? enter the formula in the form ch first, then all other atoms in alphabetical order; do not use subscripts. the formula is case-sensitive