State Marijuana Laws. In November 1996, California became the first state to legalize marijuana for medicinal purposes. Currently, there are: 1  22 states have legalized marijuana for medicinal purposes.2  16 states have decriminalized personal possession of marijuana.onflict between State Law and Federal Law. Federal law clearly conflicts with many state laws concerning marijuana. Under the Preemption Clause of the Constitution, a federal law will always trump a state law.
mg is milligram, a measure of weight. Liter is a measure of volume. A liter of WATER would weigh 1 million milligrams- but a liter of alcohol would weigh about 700,000 mg- since alcohol is lighter than water. A liter of mercury would weigh MUCH more, since it is heavier than water.
An 8-oz brewed coffee has 180 mg, but a single espresso (which is just 1 oz) has 75 mg, or about 40% of the brewed cupâs caffeine. By comparison, a 1-oz serving of brewed coffee would have just 22 mg, so itâs only half as caffeine-dense as espresso. Reply.