How many valence electrons would there be for the element with the
following orbital diagram?

How many atoms are there in 5.70 mol of mg

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.

Estimate the molar mass of the gas that effuses at 1.6 times the effusion rate of carbon dioxide.