Chemistry, 16.10.2019 20:10, Mackjrmario
Along glass capillary tube, of diameter 0.01 cm, is in contact with water at one end and dry air at the other. water vapor evaporates at the wet end within the capillary, and the vapor diffuses through the capillary toward the dry end. how long is required for 1.0 g of water to evaporate through this system? the vapor pressure of water is 16.48 mmhg at 19 c, the temperature at which the entire system is maintained. take the diffusivity of water vapor in air at 19 c to be 0.298 cm2/s, and assume that the dry air is at a pressure of 760 mmhg. assume that the distance from the wet interface within the capillary to the dry end is always 10 cm.
Answers: 3
Chemistry, 22.06.2019 05:50, zaleemawhite
Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.
Answers: 2
Chemistry, 22.06.2019 12:00, ctyrector
Give the set of reactants (including an alkyl halide and a nucleophile) that could be used to synthesize the following ether: draw the molecules on the canvas by choosing buttons from the tools (for bonds and charges), atoms, and templates toolbars, including charges where needed. ch3ch2och2ch2chch3 | ch3
Answers: 1
Chemistry, 22.06.2019 18:00, kingamir
Answer asap need it by wednesday morning carry out the following calculations on ph and ka of from data. i. calculate the ph of 0.02m hcl ii. calculate the ph of 0.036m naoh iii. calculate the ph of 0.36m ca(oh)2 iv. calculate the ph of 0.16m ch3cooh which has ka = 1.74 x 10-5 mol dm-3 v. calculate ka for weak acid ha which has a ph of 3.65 at 0.30m concentration vi. calculate the ka of a solution made by mixing 15.0 cm3 0.2m ha and 60.0 cm3 0.31m a-. [ph= 3.80] vii. calculate the ph of a solution made by mixing 15.0 cm3 0.1m naoh and 35.0 cm3 0.2m hcooh. [ka = 1.82 x 10-4 m]
Answers: 1
Along glass capillary tube, of diameter 0.01 cm, is in contact with water at one end and dry air at...
Mathematics, 13.12.2020 03:00
Mathematics, 13.12.2020 03:00
Mathematics, 13.12.2020 03:00
Mathematics, 13.12.2020 03:00
Mathematics, 13.12.2020 03:00