If the reaction uses 140 grams of iron, how much rust could be produced?

Which of the following best describes the formation of plasma?

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.

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.