your mommy buys you a helium balloon at a circus. It has a volume of 4.00 liters at stp. what mass of helium, express in gram, does this balloon contain? answer

Calculate the molarity of the solution. 6.02 x 1022 molecules of hci (molecular weight = 36.5 g/mole) in 2.0 liters of water m

The first element on the periodic table of elements is carbon. a. true b. false

Acandle’s wick is the fabric string that holds the flame, and it burns down at a constant slow pace when the candle is lit. the wick is usually surrounded by wax. which is the most important property of covalent compounds that makes them useful for making candle wax? a low boiling point a low melting point a high boiling point a high melting point