Chemistry, 27.01.2022 04:20, ashleydaya
Suppose your drinking water was tested and found to contain 0.005 ppm of arsenic, 0.002 ppm of benzene, 0.010 ppm of cadmium, and 0.400 ppm of cyanide. Which chemicals were above the acceptable concentrations for drinking water?
Answers: 3
Chemistry, 22.06.2019 17:10, sophiaa23
)benzene and toluene form nearly ideal solutions. consider an equimolar solution of benzene and toluene. at 20 °c the vapour pressures of pure benzene and toluene are 9.9 kpa and 2.9 kpa, respectively. the solution is boiled by reducing the external pressure below the vapour pressure. calculate (i) the pressure when boiling begins, (ii) the composition of each component in the vapour, and (iii) the vapour pressure when only a few drops of liquid remain. assume that the rate of vaporization is low enough for the temperature to remain constant at 20 °c.
Answers: 1
Chemistry, 22.06.2019 22:30, lori90
Essay-alternative energy sources research sources of energy that are being developed. write a report of 350-400 words discussing the information you learned concerning the development of various energy sources and the impact that you think they will have on your life. include sources cited at the end of your report using the mla format. follow the rubric guidelines. note that wikipedia is not an appropriate resource for a research paper. worth 99
Answers: 3
Chemistry, 23.06.2019 00:30, hdhshshs741
An unknown insoluble substance displaced the water shown. it's mass is indicated on the triple beam balance. mass = a. 694 b. 693.5 c. 693.0 d.693.8
Answers: 1
Suppose your drinking water was tested and found to contain 0.005 ppm of arsenic, 0.002 ppm of benze...
Mathematics, 05.06.2020 00:04
Mathematics, 05.06.2020 00:04