Which set of quantum numbers is correct and consistent with n = 4?  Data sheet and Periodic Table

What is the formal charge on nitrogen in the nitrate ion?           Data sheet and Periodic Table

What is the orbital diagram for the valence electrons in a ground state atom of nitrogen?   Data sheet and Periodic Table

Which figure best represents what will happen when Pb(NO3)2(aq) is treated with an excess of NaCl(aq)?  Water molecules are omitted for clarity.  Data sheet and Periodic Table

The limiting reagent for a given reaction can be recognized because it is the reagent that  Data sheet and Periodic Table

Which statement regarding the nucleus of an atom is correct?  Data sheet and Periodic Table

When a 45.0 g sample of an alloy at 100.0 °C is dropped into 100.0 g of water at 25.0 °C, the final temperature is 37.0 °C. What is the specific heat of the alloy?  The specific heat of H2O(l) is 4.184 J·g–1·°C–1.Data sheet and Periodic Table

What is the energy of a photon with a wavelength of 245 nm? Data sheet and Periodic Table

What is the classification of the substance in the figure?         Data sheet and Periodic Table

What are two definitions of a base in aqueous solution?  Data sheet and Periodic Table