What's the difference between saturated and unsaturated fatty acids?

Draw the aromatic compound toluene (methylbenzene). show all hydrogen atoms, including those on the ring.

When did stem cell research become known ? who discovered stem cell? what experiments or studies have been conducted so far?

Which of the following warnings would an agricultural chemist tell a farmer who wants to recycle his or her own ammonia? recycling ammonia is a difficult process that sometimes takes weeks. recycling ammonia requires a degree in biochemistry or a related field. recycling ammonia can be harmful because it is highly flammable and toxic. recycling ammonia costs too much money considering the price of the necessary chemicals.