500ml of a buffer solution contains 0.050 mol nahso3 and 0.031
molna2so3

a) what is the ph of the solution?

b)write the net ionic equation for the reaction whne naoh is
addedto this buffer.

c) calculate the new ph after 10ml of 1.0 m naoh is added to
thebuffer solution.

d) calculate the new ph after 10ml of 1.0 m naoh is added to
500mlof pure water.

e) explain why the ph of water changed so much as compared to theph
of the buffer.

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.

650.j is the same amount of energy as? 2720cal1550cal650.cal2.72cal

How is the atomic number of a nucleus changed by alpha decay