Which one of the following does NOT consist of approximately 1 mole of atoms? A)19 g of fluorine atoms
B)23 g of sodium
C)71 g of chlorine gas
D)6,022 X 10 atoms of helium​

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

In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 5.35 mol fe and 7.65 mol nio(oh) react?

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true