List the points in particle theory

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

What is the mass of 0.46 mil of mgcl2

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