S
  1. study help
  2. subject categories
  3. sciences
  4. chemistry
  5. march 2020
  6. 13

Chemistry Questions and Answers March 13, 2020

Expert-verified solutions to help you succeed

The unit cell of a compound containing Co and O has a unit cell shown below (the left-hand figure). The Co atoms are on the corners, and the O atoms are completely within the unit cell. What is the empirical formula of this compound? What is the oxidation state of the metal? Explain your answer.
Constants |Periodic Table ? Part A The unit cell of a compound containing Co and O has a unit cell shown below. The Co atoms are on the corners, and the O atoms are completely within the unit cell. What is the empirical formula of this compound? Express your answer as a chemical formula. Submit st ?? Part B This question will be shown after you complete previous question(s). You may want to reference (Peges 494 494) Section 12.8 while completing this problem. Provide Feedback

These UV assays are very commonly used by molecular biologists. Why? What information is obtained from these simple assays? <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /?>

What are the advantages and disadvantages of these UV methods? Consider their accuracy, precision, range, ease of use, cost, and any other factors you think are important.

(a) What evidence did you observe that would lead you to believe that the residue was potassium chloride (b) What would happen if you added silver nitrate to a solution of sodium chloride Explain your answer. (e) Did the evidence obtained in the silver nitrate tests of the three solutions prove con clusively that the residue actually was potassium

A student forgot to read the label on the jar carefully and put potassium chloride in the crucible instead of potassium chlorate. How would the results turn out

What is the mass percent of an aqueous sodium hydroxide solution in 1000 g of H,O if the molality of NaOH is 10.7m

What if a potassium chlorate sample is contaminated with moisture. Would an analysis show the experimental oxygen higher or lower than the theoretical oxygen Explain your answer

Calculate the percentage of CI in AI(CIO 3 ) 3 .

How many grams of Al are required to react with 35mL of 2.0M hydrochloric acid, HCl HCI Al AICI, H

Other metal chlorates when heated show behavior similar to that of potassium chlorate yielding metal chlorides and oxygen. Write the balanced formula equation for the reac tion to be expected when calcium chlorate, Ca(CIO, is heated.

How many milliliters of 0.10 M Pb(NO,), are required to react with 75 mL of 0.20 M Nal Pb(NO,), Nal PbI, NANO,

The volume of a 32.4 (by mass) solution is 179.1mL. The density of the solution is 1.296 gmL. What is the mass of solute in this solution