. Tiana is a chemist who is making a chemical to add to swimming pools in order to
make the water safer. She mixed two solid
substances together in a sealed container.
The diagram above shows the repeating
groups of atoms that make up the two
starting substances.
After mixing, Tiana found two liquid
substances in the sealed container. (Nothing
had escaped.) Which of the diagrams to the
left shows the repeating groups of atoms
that make up the ending substances?

Fugu, also known as puffer fish, is a sushi delicacy that can also be lethal. puffer fish contain a powerful toxin that can kill an adult a few hours after ingestion. sushi chefs who prepare fugu must be specially trained because any contamination of the toxin-free areas of the fish can be deadly. recently this toxin has been put to good use, as scientists have discovered that a purified form of it can treat severe pain in cancer patients. this recent scientific discovery would fall under which area of chemistry? applied biochemistry pure organic chemistry pure physical chemistry applied inorganic chemistry

Which of the following shapes would represent a molecule with two bonded atoms and 3 lone pairs on only one of them , trigonal planar , bent , trigonal pyramidal , linear

Marcel just purchased 1.69 grams of iron fillings in order to make living putty for his 6 year old niece. how many moles of iron are made in his sample?