How many of each atom in the reactants? How many of each atom in the products?

Iron (Fe):

Iron (Fe):

Oxygen (O):

Oxygen (O):

Copper (Cu):

Copper (Cu):

Sulfur (S):

Sulfur (S):

(you put the number of how many atoms and then the product)

According to coulomb's law, how would the electrical force between particles change if the product of their electrical charge increased?

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms

Scientists often have to deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. express each number in an alternate form.