Analyze the structure below. Circle the nitrogen atom which is considered to be overall most basic. Provide a brief discussion to explain why this nitrogen is considered to be most basic (hint: think about the orbital each nitrogen lone-pair occupies). Draw relevant resonance structures of the conjugate acid expected to form when this structure is treated with 1 equivalent of HCl. Underline the resonance structure(s) that have filled octets everywhere

Match the following vocabulary terms to their definitions. 1. amount of energy required to change 1 gram of material from the solid to the liquid state at its melting point 2. a measure of the kinetic energy of the particles of a substance 3. the amount of heat energy required to raise the temperature of 1 gram of liquid water from 14.5°c to 15.5°c 4. amount of energy required to change 1 gram of material from the liquid to the gaseous state at its boiling point 5. the amount of energy required to change 1 gram of a substance 1°c a. temperature b. latent heat of vaporization c. latent heat of fusion d. calorie e. specific heat

A155.0 9 piece of copper at 182 °c is dropped into 2500 g of water at 23.9 °c. (the specific heat of copper is 0.385 1/9°c.) calculate the final temperature of the mixture. (assume no heat loss to the surroundings.)

How much mass would a mole of hydrogen molecules contain? recall that hydrogen is diatomic. g/mol