How many molecules of butane (C4H10) are contained in a 9.213 g sample? How many hydrogen atoms are contained in this sample?

Predict the products butane (c4h10) + oxygen —>

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins

Which describes fat? a: a carbohydrate that produces energy b: a nucleic acid that directs cell function c: a lipid that stores energy d: a protein that speeds up a chemical reaction