Harim placed 5mL of ethanol into a container that weighs 1 gram using a dropper. He already knew the density of ethanol is 0.78 g/mL. What is the mass of the ethanol, not including the container? pls help i have to hurry thanks <3

What is the oxidation state of each individual carbon atom in c2o42−?

What is the formula of the ionic compound composed of calcium cations and chloride anions

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