Expert Answers

Description The following reaction represents a step in the separation of which analytical group of cations?  Hg22+(aq) + 2Cl–(aq) ? Hg2Cl2(s) Select one: a. Analytical Group IV b. Analytical Group III c. Analytical Group II d. Analytical Group I

Description What is the correct mathematical expression for finding the molar solubility (s) of Sn(OH)2? Select one: a. 2s3 = Ksp b. 4s3 = Ksp c. 108s5 = Ksp d. 8s3 = Ksp

Description Predict what might happen if you made up phosphate buffer with only half as much NaH2PO4 (sodium monobasic phosphate)  compared to Na2HPO4 (sodium dibasic phosphate)

Description Write a complete, balanced equation for this double displacement reaction. (Hint: The solid is a compound of Ni 2 ions and hydroxide ions.)  Write the complete molecular equation rather than the net ionic equation.   For this lab the substances that I used were: Add 15 mL of 1 M sodium hydroxide (NaOH) solution from the Materials shelf to one of the beakers. Add 6 mL of nickel (II) chloride solution (NiCl2) from the Materials shelf to the other, empty, beaker. Then they were poured together

Description For each of the following methods of transportation, establish the stoichiometry between the instrument or object and the number of tires required to move the object. Make a table. (Truck, car, bicycle, wheelchair, boat, airplane)

Description A piece of aluminum foil, weighing 5.70 grams, is heated from 22.0°C to 69.0°C. How much heat, in Joules, would it take to warm this piece of aluminum foil? (Specific heat of aluminum = 0.215 cal/g °C and 0.901 J/g °C)

Description +2 +3 -2 0

Description This is a Prelaboratory assignment.  I need help.  I will upload the pages if someone bids on it.  It's about eight questions long with some having multiple parts to them. To give you a preview of what it is so that you can decide if you would be able to answer these questions correctly please follow these steps.  Also, I did some questions.  Please check those to see if you get similar answers. 1.  Follow this link.  https://books.google.com/books?id=X3KX6p8hnlIC&pg=PA417-IA6&lpg=PA417-IA6&dq=Experimental+procedure,+Part+A.1.+Describe+the+technique+for+mixing+solutions+in+a+%22small%22+test+tube.&source=bl&ots=AenFh7EBnR&sig=UgSmEiadEP3Rv1SwFVBFyZLMuKI&hl=en&sa=X&ved=0CB0Q6AEwAGoVChMI65vf4qP8xwIVw1g-Ch3P9g6I#v=onepage&q=Qual%3A%20Common%20ANions&f=false 2.  Type "Qual: Common Anions" in the search box then press "Go". 3.  Click the first page that shows up on the top.  You will need to scroll down about seven pages until you see Experiment 37 Prelaboratory Assignment Qual: Common Anions.  It will say for the first question "1.  A review of the Dry Lab 4 will make this experiment...".  These questions are similar to the ones I have to complete.

Description what is the molality of a solution made by combining 5.0 g of CaCl2 with 500.0 g of water?

Description Answer in terms of a general enzyme, because no enzyme is specified. Compounds: Composed of- Purpose- Reusable? Participates in how many different types of reactions? Activity level affected by-