Chemistry Questions and Answers November 13, 2019

The daily output of stomach acid (gastric juice) is 1000 mL to 2000 mL. Prior to a meal, stomach acid (HCl) typically has a pH of 1.42. (10.5, 10.6) a. What is the [H3O+] of stomach acid? b. One chewable tablet of the antacid Maalox contains 600. mg of CaCO3. Write the neutralization equation, and calculate the milliliters of stomach acid

Materials: white sand, palm oil, ethyl alcohol, slab of wax, distilled water, cedar wood, vinegar, NaOH, HCl, beaker, burner, and tongs. You are given three blocks of metal (Aluminum, Copper, Iron) of the same mass. How can you experimentally show that each metal differs in specific heat capacity? show illustration/s if necessary.

A galvanic cell with E 0.30 V can be constructed using an iron electrode in a cell 1.0 M Fe(NO3)2 solution, and either a tin electrode in a 1.0 M Sn(NO3)2 solution, or a chromium electrode in a 1.0 M Cr(NO3)3 solution even though Sn2 Sn and Cr3Cr have different reduction potentials Give the overall balanced reaction for FeSn cell. Do not include

If 1.32 g MgO is combined with 100.0 mL of 1.00 M HCl in a coffee cup calorimeter, the temperature of the HCl solution increases from 24.2 0 C to 34.4 0 C. Calculate the enthalpy change for the reaction per mole of MgO. Assume that the specific heat of the HCl solution is 4.18 J/gK and its density is 1.00 g/mL and no heat is lost to surroundings.

Consider the example polymer below to complete the statement relating polymer patterns to plastic flexibility.

0 0 9 ,Here is an example of the polymer named headtotailhendtotail addition polyvinyl chloride chirality The single phenyl group creates in the monomer and allows for different polymerization patterns. random amorphous This polymer is in a more rigid plastic than PS in a arrangement and will form a arrangement. asymmetry condensation radical