Help plsss There are 2 molecules of water and 4 molecules of methane. how many moles of methane are there

The density of glycerin is 1.26grams/centimeter cubed . how many is this? use the conversion rates of and . express your answer to the correct number of significant figures.

Scientific evidence tells us that the cause of earths four season is the tilt of earth as it revolves around the sun. the student is instructed to illustrate this information in a science notebook. how will the student illiterate winter in the northern hemisphere?

Why does asexual reproduction result in offspring with identicle genetic variation