which drawing in the figure depicts the electron configuration of an atom that can form covalent bonds with up to two hydrogen atoms?

Consider the point on the plot where 10.0 g of naoh have been added. what amount of naoh, in moles, has been added? 0.308 mol fecl3 initially present

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

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.