Which of the following is true about petroleum? O It emits harmful radiation.
O It is the most expensive fuel.
O It produces greenhouse gases.
O It provides a clean source of energy.

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.

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.

How many oxygen atoms are there in 3.15 moles of hcl manganese (iv) oxide, mno2