Astudent based the analysis of cu(ii) in a sample on the formation of the blue complex [cu(h2o)6]+2. a standard solution was made when 1.432 g of pure copper wire (mm= 63.546g/mol) was weighed, dissolved in concentrated hno3, and diluted to 1.00x102 ml. the stock solution was used to make a dilution by mixing 6.00 ml of stock solution with 44.0 ml of deionized water. colorimetric determination gave that the absorbance of the sample was 0.07525 when the path length of the light through the solution was exactly 1 cm. calculate the transmittance of the solution.
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Chemistry, 21.06.2019 20:40
If equal masses of the listed metals were collected , which would have a greatest volume ? a. aluminum 2.70,b.zinc7.14,c.copper 8.92,d.lead 11.34
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Chemistry, 22.06.2019 14:10
13. a covalent bond between two atoms is likely to be polar if: a. one of the atoms is much more electronegative than the other. b. the two atoms are equally electronegative. c. the two atoms are of the same element. d. the bond is part of a tetrahedrally shaped molecule. e. one atom is an anion.
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Chemistry, 22.06.2019 21:50
Liquid from a brewery fermentation contains 10% ethanol and 90% water. part of the fermentation product (50,000 kg/h) is pumped to a distillation column on the factory site. under current operating conditions, a distillate of 45% ethanol and 55% water is produced from the top of the column at a rate of one-tenth that of the feed. what is the composition of the waste "bottoms" from the still?
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Chemistry, 23.06.2019 00:30
What is the chemical formula of magnesium bromide? a. mgbr2 b. mgbr c. mg2br2 d. mg2br
Answers: 3
Astudent based the analysis of cu(ii) in a sample on the formation of the blue complex [cu(h2o)6]+2....
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