How many molecules are contained in 0.500 moles of hydrogen gas?

A.

1.20 x 1024 molecules

B.

6.02 x 10-23 molecules

C.

3.01 x 10-23 molecules

D.

3.01 x 1023 molecules

How air particles exert a pressure on the inside of the balloon

This large tectonic plate is bounded on three sides by whats know as the ring of fire. what is the name of this tectonic plate? a) pacific plate b) eurasian plate c) north american plate d) indo- australian plate plz it's science but there's no option for science so i picked chemistry

Complete each row of the table below by filling in the missing prefix or missing exponent.