Suppose that Biuret reagent turns purple when it is added to an unknown substance. What can you conclude about the substance?
A. The substance is an acid.
B. The substance contains protein.
C. The substance contains starch.
D. None of the above are valid conclusions.
Answers: 2
Chemistry, 21.06.2019 18:50
Which term refers to a property that depends only on the amount of a substance? ©@
Answers: 2
Chemistry, 22.06.2019 00:30
13. calculate the initial concentration (before precipitation) of carbonate ions after the addition of each 0.05 ml of solution b to the 1.00 l beaker of solution a. divide the work among group members and write the answers in the table in model 3. assume the volume change as solution b is added is negligible. 14. notice the initial concentrations of zn2+ - and cu2+ in the table in model 3. a. explain how these were obtained from the data in model 2. b. as solution b is added and precipitates form, do these initial concentrations change? 15. use the data in model 2 to indicate the presence of precipitate (either znco3 or cuco3) after each 0.05 ml addition of solution b in model 3. 16. use the initial concentrations of carbonate ions and zinc ions to calculate the reaction quotient, qsp for the zinc carbonate scenarios in model 3. divide the work among group members and write the answers in the table in model 3. 17. use the initial concentrations of carbonate ion and copper(ii) ions to calculate the qsp for the copper(ii) carbonate scenarios in model 3. divide the work among group members and write the answers in the table in model 3.
Answers: 3
Chemistry, 22.06.2019 03:00
Which step in naming unsaturated hydrocarbons is used for alkenes but not alkynes
Answers: 2
Suppose that Biuret reagent turns purple when it is added to an unknown substance. What can you conc...
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