Chemistry, 11.06.2021 20:00 leelee8335
Which is most likely to happen during a double-displacement reaction?
O A. Two substances will combine to form one compound.
B. The ions in two compounds will switch places to form two new
compounds.
C. An element will replace another element in a compound.
D. A compound will break apart into two or more substances
Answers: 2
Chemistry, 21.06.2019 18:30
Which orbitals form a pi bond? a.the s orbital and three p orbitals b.the s orbital and two p orbitals c.overlapping p orbitals d.overlapping hybrid orbitals
Answers: 2
Chemistry, 22.06.2019 03:30
What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )
Answers: 1
Chemistry, 22.06.2019 05:40
Salicylic acid is a very important acid. it is used to synthesize the aspirin by treating with acetic anhydride. a 0.2015-g sample of salicylic acid was dissolved in a 100.00-ml volumetric flask, and the solution was diluted to the mark. a 10-ml aliquot of this solution was titrated with standard naoh (0.01130 + 0.2% n) to a phenolphthalein faint pink color end point at 19.81 ml. (a) (calculate the normality of the salicylic acid solution used in the titration. (b) assuming the salicylic acid is pure, what is the equivalent weight of the salicylic acid? practice problems for the final exam (continued) (c) (calculate the inherent error in the determination of the equivalent weight you calculated in part (b). use the following absolute errors in the equipment /glassware when calculating the inherent error. 5.00-ml pipet: + 0.02 ml 100-ml volumetric flask: + 0.08 ml analytical balance: + 0.2 mg 25-ml buret: + 0.03 ml
Answers: 2
Chemistry, 22.06.2019 22:40
Percent ionization for a weak acid (ha) is determined by the following formula: percent ionization=[ha] ionized[ha] initialΓ100%for strong acids, ionization is nearly complete (100%) at most concentrations. however, for weak acids, the percent ionization changes significantly with concentration. the more diluted the acid is, the greater percent ionization.a certain weak acid, ha, has a ka value of 9.4Γ10? 7.part acalculate the percent ionization of ha in a 0.10 m solution.part bcalculate the percent ionization of ha in a 0.010 m solution
Answers: 1
Which is most likely to happen during a double-displacement reaction?
O A. Two substances will comb...
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