a solid piece of aluminum metal has a mass of 4.25 grams and reacts with excess hydrochloric acid. the reaction generates hydrochloric gas and aqueous aluminum chloride at 15° c and 94.4 kPa. What volume of hydrogen gas is produced? (answer in liters)​

The comparison of the number of atoms in a copper coin the size of a penny with the number of people on earth is made to illustrate which of the following? a. that atoms are indivisible b. that atoms are very small c. that atoms are very large d. that in a copper penny, there is one atom for every person on earth