Chemistry
posted by Anonymous .
A "neon" sign contains 2.4¡Ñ10^2mL of argon. Assuming that the gas is at standard temperature and pressure, there is 1.00 moles of gas per 22.4 L of volume. How many argon atoms are present in this sign?
a. 6.5¡Ñ1021
b. 2.8¡Ñ1022
c. 3.2¡Ñ1024
d. 9.9¡Ñ1023

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