Chemistry, 01.04.2021 14:00 Piercey4642
Student dropped a copper coin into potassium sulphate solution and another into
silver nitrate solution. In one of the solutions, the coin turned
grey. In which solution would the grey colour have been observed?
Answers: 2
Chemistry, 21.06.2019 21:30, alexandroperez13
It takes 945.kj/mol to break a nitrogen-nitrogen triple bond. calculate the maximum wavelength of light for which a nitrogen-nitrogen triple bond could be broken by absorbing a single photon.
Answers: 3
Chemistry, 22.06.2019 10:50, mi364
A100 kmol/h stream that is 97 mole% carbon tetrachloride (ccl4) and 3% carbon disulfide (cs2) is to be recovered from the bottom of a distillation column. the feed to the column is 16 mole% cs2 and 84% ccl4, and 2% of the ccl4 entering the column is contained in the overhead stream leaving the top of the column. calculate the mass and mole fractions of ccl4 in the overhead stream, and determine the molar flow rates of ccl4 and cs2 in the overhead and feed streams. 12. mw_ccla- 153.82; mw_cs2-76.14.
Answers: 3
Chemistry, 22.06.2019 19:20, johnkings140
For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)
Answers: 1
Chemistry, 22.06.2019 19:30, periwinkleaqua72
What is the mass of oxygen gas is consumed in a reaction that produces 4.60mol so2
Answers: 3
Student dropped a copper coin into potassium sulphate solution and another into
silver nitrate solu...
History, 22.08.2019 10:20
Mathematics, 22.08.2019 10:20
History, 22.08.2019 10:20
Health, 22.08.2019 10:20
Mathematics, 22.08.2019 10:20