Which of the following samples contain the greatest number of atoms? a. 2.0 mol of Ar (Argon)
b. 20 million of O2 (Oxygen) molecules
c. 5g of He (Hellium)
d. 100 g of Pb (Lead)​

Sylvanite is a mineral that contains 28.0% gold by mass. how much sylvanite would you need to dig up to obtain 77.0 g of gold? explain how you got your answer and the steps you took. you

Apure solvent has a vapor pressure the vapor pressure of a solution. a. equal to b. lower than c. higher than

What type of energy do chemical bonds have? what type of energy is it converted to during chemical reactions? question 15 options: chemical bonds have kinetic energy, which is converted to potential energy during chemical reactions. chemical bonds have electric energy, which is converted to potential energy during chemical reactions. chemical bonds have heat energy, which is converted to kinetic energy during chemical reactions. chemical bonds have potential energy, which is converted to heat energy during chemical reactions.