How many moles are in 22grams of magnesium?

Why is carbon ideal for making different compounds?

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.

When the speed of the bottle is 2 m/s, the average maximum height of the beanbag is m.