How many sodium atoms are in 50 mL of salt (sodium chloride)?

Answer 1

When you calculate these, you want to remember that 1 mole of a gas is 22.4 L at STP.

So, I would convert the 50 mL to liters, which would give me 0.05 L of sodium. Then, we need to remember that there are around 6E23 atoms/particles/molecules in 1 mole of an element. So, I will multiple .05 and 6E23 and my answer should be 3E22 or 3x10^22.