7. Complete the following reporting the answer to the correct number of significant digits with the appropriate units: a. What is the density of a metallic rod with a mass of 16.359g that displaces 16.78849 of water at 21.9C? Enter your answer here using the Equation Editor b. Beer's Law is a limiting law where the absorbance (A) is directly proportional to concentration (C) at a given wavelength of light through the absorptivity (a) of the material, A = abc, where b represents the path length. If the absorptivity of the material is 3233 L.(molecm) and the path length is 10. mm, what is the absorbance of a solution with a concentration of 8.024 x 10^M? Enter your answer here using the Equation Editor C. The heat (9) given off or absorbed in a chemical reaction can be determined through the temperature change: q = mCAT where m is the mass of the system, C, the specific heat capacity and at the temperature difference. What is the heat given off by the neutralization of sodium hydroxide by hydrochloric acid if the mass of the system is 101.03g, the specific heat capacity is 4.184)(gC) and the initial and final temperatures are 25.3C and 35.7C, respectively. Enter your answer here using the Equation Editor