HURRY ITS IS DUE SOON

Estimate the molar mass of the gas that effuses at 1.6 times the effusion rate of carbon dioxide.

What is the oxidation state of each individual carbon atom in c2o42−?

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