Chemistry, 17.07.2020 19:01 adejumoayobami1
Sllom
A chemist working as a safety inspector finds an unmarked bottle in a lab cabinet. A note on the door of the cabinet says the cabinet is used to store bottles of
pentane, diethylamine, ethanolamine, chloroform, and dimethyl sulfoxide.
The chemist plans to try to identify the unknown liquid by measuring the density and comparing to known densities. First, from his collection of Material Safety
Data Sheets (MSDS), the chemist finds the following information:
liquid
density
pentane
0.63
g/mL
diethylamine
0.71
g/mL
ethanolamine
1.0
g/mL
chloroform
1.5
g/mL
dimethyl sulfoxide
g
1.1
g/mL
Next, the chemist measures the volume of the unknown liquid as 1151. cm^3 and the mass of the unknown liquid as 1.71 kg.
Calculate the density of the liquid. Round your
answer to 3 significant digits.
Given the data above, is it possible to identify
the liquid?
If it is possible to identify the liquid, do so.
Answers: 2
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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.
Answers: 1
Chemistry, 22.06.2019 23:00, emilyphillips1681
If two identical atoms are bonded, what kind of molecule is formed
Answers: 1
Chemistry, 23.06.2019 00:30, vane6176
You are attempting to recrystallize a crude product mixture. you add the appropriate amount of hot solvent and are allowing the solution to slowly cool to room temperature. however, at room temperature no crystals have appeared, which of the following methods should be used to induce crystallization? choose all correct answers. a) place the flask in an ice bath. b) swirl the contents of the flask. c) add a small seed crystal of the desired product. d) scratch the inside of the glassware using a stir rod. it can be multiple choices
Answers: 3
Sllom
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