Sodium carbonate and lead(II) nitrate Express your answer as a chemical equation. Enter noreaction if no precipitate is formed. Identify all of the phases in your answer.

Skills of homo sapiens were found an excavation. the skulls were preserved because the bodies were frozen. so, these fossils are (blank) fossils.the image shows the evolution of skulls beginning 2 to 3 million years ago. based on the image, modern human skulls(blank) ape skulls.

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17

4. propanol and isopropanol are isomers. this means that they have a) the same molecular formula but different chemical properties. b) different molecular formulas but the same chemical properties. c) the same molecular formula and the same chemical properties. d) the same molecular formula but represent different states of the compound