You missed breakfast and now it is lunch time and you aren the middle of an expieriment. what safety precautions should you employ to satisfy your hunger?
a- pause your experiment and wash your hands before eating a snack
b- handle your food with a chemical barrier
c- finish your experiment, wash your hands, and leave the lab
d- use a fork or spoon to safely handle your food

the reaction mixture contains some ammonia, plus a lot of unreacted nitrogen and hydrogen. the mixture is cooled and compressed, causing the ammonia gas to condense into a liquid. the liquefied ammonia is separated and removed. the unreacted nitrogen and hydrogen are then recycled back into the reactor .

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".