How many hydrogen atom are there in 9.213g of c4h10

Which mathematical relationship should you us to convert moles of a substance into grams

Which best describes how johannes kepler developed his laws of planetary motion

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.