Due in 30 minutes joseph obtains 12.0 g of sodium chloride (table salt) and 85.0 g of water in separate beakers. he masses both substances; his data is shown in the table below. mass of beaker with sodium chloride 37.8 grams mass of beaker with water 127.9 grams joseph carefully pours all of the sodium chloride into the water and stirs gently until all of the sodium chloride has disappeared. joseph then places the beaker containing the water and sodium chloride on the balance. c. predict the mass shown on the balance. d. draw particle pictures for before and after joseph’s experiment.

Select the correct answer. given: 2libr + ba → babr2 + 2li in this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced? a. 1.18 mol b. 2.37 mol c. 4.73 mol d. 16.4 mol e. 32.9 mol

Which statement correctly describes potassium iodide, ki? there is a one-to-one ratio of potassium ions to iodide ions. potassium gains electrons and iodine loses electrons during the reaction. the lattice is held together by potassium anions and iodide cations.

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