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.
Best Answer: That depends on the mass of the item you are measuring. mg (one thousandths of a gram) is a measure of mass (weight) ml (one thousandths of a liter) is a measure of volume. Water has a specific gravity of 1 g/cc, which is equivalent to 1g/ml. Therefore 1 ml of water would weigh 1000 mg. 1 ml of mercury would weigh about 14,000 mg. or 14 g. Just multiply the specific gravity of the item you are dealing with times 1000 if you need know the weight in mg of 1 ml.