Chemistry, 23.07.2019 02:30 katherineweightman
Which formula equation shows a reversible reaction?
a. 2na+f2–> 2naf
b. caco3–> cao+co2
c. nh4ci(s)—–nh3(
g.+hci(
g. 2h2o2(aq)–pt—> 2h2o(i)+o2(g)
Answers: 3
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 12:00
Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.
Answers: 3
Chemistry, 23.06.2019 00:30
On the periodic table, elements are arranged by which of the following. a. mass numbers. b. increasing atomic number. c. alphabetical order. or d. density
Answers: 1
Chemistry, 23.06.2019 04:31
Use the drop-down menus to label each of the following changes p for physical change and c for chemical change. the substance changes to a new substance. the original substance can be recovered. the color changes. gas is produced and given off. the substance changes size, shape, or volume.
Answers: 2
Which formula equation shows a reversible reaction?
a. 2na+f2–> 2naf
b. caco3–>...
a. 2na+f2–> 2naf
b. caco3–>...
Mathematics, 18.11.2020 09:20
Mathematics, 18.11.2020 09:20
Mathematics, 18.11.2020 09:20
Mathematics, 18.11.2020 09:20
Mathematics, 18.11.2020 09:20
Chemistry, 18.11.2020 09:20
Mathematics, 18.11.2020 09:20
Mathematics, 18.11.2020 09:20
Chemistry, 18.11.2020 09:30
Physics, 18.11.2020 09:30