H2O is a single atom of wat true or false?

Which of the following has the greatest mass, in grams? a. 1 atom of gold (Au) b. 1.0 mol mercury (Hg) atoms c. 2.0 mole of chlorine (Cl) atoms d. 25 atoms of mercury (Hg)

Be sure to answer all parts. One reason spectroscopists study excited states is to gain information about the energies of orbitals that are unoccupied in an atom's ground state.

A flask contains oxygen, carbon dioxide, and nitrogen gases. The partial pressures of each are 11.4 atm, 5.6 atm, and 8.7 atm, respectively. What is the total pressure in the flask in atm?

If the two atoms participating in a bond have an electron negativity difference of 1.9, what type of of bond would they be participating in?

An unknown solid is added to water in a calorimeter. The temperature of the water increases. What does this say about the reaction? A) The reaction is exothermic. B) The reaction is endothermic. C) The reaction has absorbed heat from the solution.

Which of the following elements has its highest energy electrons in an "s" atomic orbital? radiium (Ra) neon (Ne) aluminum (Al) lanthanum (La)

About how long does it take for the Sun to make one rotation on its axis?

Does a physical change affect the identity of a substance

If the cost of electricity is 8 cents/kWh, how much will it cost to use the light for a whole year (365 days) ?

Place the object into the graduate cylinder and record the new volume of water