Chemistry, 03.12.2019 00:31 deojahnaeb37
Asample of 0.300 mg pure chromium was added to excess hydrochloric acid to form a 10.0 ml aqueous solution of a chromium (iii) salt, which has a violet hue. exactly 1.00 ml of the resulting solution was analyzed using a spectrophotometer in a 1.00-cm cell at 575 nm, and the percent transmittance for the solution was 62.5%. what is the extinction coefficient?
Answers: 3
Chemistry, 21.06.2019 18:30
Asample of the male sex hormone testosterone, c19h28o2, contains 3.88×10^21 atoms of hydrogen.(a) how many atoms of carbon does it contain? (b) how many molecules of testosterone does it contain? (c) how many moles of testosterone does it contain? (d) what is the mass of this sample in grams?
Answers: 1
Chemistry, 22.06.2019 02:30
Which piece of equipment would me most useful for measuring the volume of some water? a. pan balance b. graduated cylinder c. tweezers d. flask quick
Answers: 2
Chemistry, 22.06.2019 07:40
22. a flask containing 450 ml of 0.50 m h2so4 was accidentally knocked to the floor. how many grams of nahco, do you need to put on the spill to neutralize the acid according to the following equation: h2so4(aq)+2 nahcos(aq) na,so(aq) +2 h20()+2 co2(g) d) 38 g a) 2.3 g b) 9.5 g c) 19 g
Answers: 1
Chemistry, 22.06.2019 11:00
Ais a mountain created from eruptions of lava, ash, rocks, and hot gases.
Answers: 1
Asample of 0.300 mg pure chromium was added to excess hydrochloric acid to form a 10.0 ml aqueous so...
Mathematics, 07.10.2020 22:01
Mathematics, 07.10.2020 22:01
English, 07.10.2020 22:01
Mathematics, 07.10.2020 22:01
English, 07.10.2020 22:01
Chemistry, 07.10.2020 22:01