The mass of a single iron atom is 9.28×10-23 grams. how many iron atoms would there be in 91.5 milligrams of iron?

Calculate the molarity of 48.0 ml of 6.00 m h2so4 diluted to 0.250 l .

Acrystal that absorvd water from air is (blank)a. aqueousb. homogenousc. hygroscopicd. efflorescent

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.