Week 4 Chapter 45 Quiz _ 117

4. Calcium Hydroxide Solution (Lime Water) and olive oil are used because an emulsifying agent is formed in situ when these 2 solutions are agitated together. What is the emulsifying agent that is formed? a. calcium succinate b. calcium oleate c. succinic hydroxide d. palmitic hydroxide

A  ____ is a molecule which makes water coat a surface or dilute thick blood more readily.   surfactant   coagulant   antipolymerant   vehicle

Which compounds used in this lab are toxic in aquatic environments and should not be rinsed down the drain? Select all of the species that are toxic in aquatic environments. HCI hydroxylamine hydrochloride 1,10-phenanthroline sodium acetate ferroin

Read the entire procedure and the recommended safety precautions. you think extra pieces of calcium or magnesium metal should be disposed of down the drain? or why not?

We started with 80mm of soil in the mason Jar.  In some cases, after seperation of the sand, silt and clay, the volume of the soil is greater than 80mm.  What could be the cause of this?

A solution is contaminated with traces of cadmium, manganese, and cobalt. Which option would be the safest way to make it safer for human consumption? ksp OH- CO32- S2- Cd2+ 2.5x10-14 1.8x10-14 8x10-28 Mn2+ 1.6x10-13 5.0x10-10 2x10-53 Co2+ 1.3x10-15 1.0x10-10 5x10-22 A bubble carbon dioxide into the water B raise the pH to about 12 C lower the pH to about 2 D increase the sulfide level

Fill in the table

In the phosphate analysis of a wastewater sample, 30.00 mL of the original sample was taken and diluted with 120.00 mL deionized water. The diluted sample was found to have a phosphate content of 25.5 ppm. What is the phosphate content (in ppm) of the original wastewater sample? DENSITY VALUES AT 25°C Ethanol: 0.789 g/mL Water: 0.997 g/ml Acetic Acid: 1.05 g/mL

Soap is produced by a process called _______.   a hydrolysis reaction   b esterification   c precipitation   d redox reaction

None