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Questions (14)
Consider the following surfactants:
(a) Which are nonionic surfactants? i) A ii) B iii)C iv) D v) E
7 answers
988 views
The energy versus bond length for the average bond in two solids, A and B, is shown below. Atoms in the two solids have the same
2 answers
1,063 views
Arginine
O 2.01 H2N---CH--C----OH 9.02 CH2 CH2 CH2 NH 12.48 C==NH NH2 ________________________________________ 9.78 O 2.35
2 answers
724 views
For each pair of compounds, identify the one with the higher boiling point.
I)GeCl4 or SnCl4 II)PF3 or PF5 III)H2O or H2S
3 answers
2,094 views
The vacancy fraction of a particular metal is found to double as the temperature of the metal is increased from 700 degrees C to
6 answers
521 views
(a) Silicon (50 g) has been doped with 27 mg of antimony (Sb). Determine the concentration of free charge carriers
7 answers
537 views
(a) The solubility of bismuth iodide (BiI3) in water is 4.891 x 10-3 M. Calculate the value of the solubility product. The
13 answers
1,226 views
Identify the element that, acting as a target in an x-ray tube, generates Lα radiation of wavelength, λ, equal to 3.07 nm
1 answer
511 views
(a) What is the distance between second nearest neighbor atoms in vanadium? Express your answer in cm.
(b) What is the
9 answers
515 views
Shown below is a rough sketch of the unary phase diagram (pressure vs. temperature) for carbon dioxide , dry ice. Note the
5 answers
670 views
(a) Propylene, H2C=CH-CH3, can be reacted to form a polymer known as polypropylene (PP). What type of polymerization reaction is
3 answers
1,517 views
(a) What is the pH of 50 mL of a 0.2M glycolic acid aqueous solution after adding 5 mL of 0.25 M KOH? The pKa of glycolic acis
4 answers
490 views
For AsClF4^2-:
a)Name the hybridization of the orbitals of the central atom. i)s ii)sp iii)sp2 iv)sp3 v)sp4 vi)sp3d vii)sp3d2
5 answers
1,133 views
The rate constants for a first order decay reaction are found to be:
K287.3C = 1 X 10-4s-1 K327.4C = 19.2 X 10-4s-1 (a) Determine
2 answers
514 views
Answers (22)
b) 0.551
b) 0.551
b) 0.551
E = P^2/2Me + E(first ionization) P= h / BroglieWavelength E(first ionization)=21.7*10^-19 Me= 9.1*10^-31 h= 6.626*10^-34 frecuency(hz)= E / h
E = P^2/2Me + E(first ionization) P= h / BroglieWavelength E(first ionization)=21.7*10^-19 Me= 9.1*10^-31 h= 6.626*10^-34 frecuency(hz)= E / h
Thank you for the explanation.
Same here. Received a red X on the answer.
Had the answer from someone else and still awaiting the formula to double check.
Anonymous is right! a)5.11 atm and -56.3 b) I c) 73 atm and 31.1 d) 1 atm -78.5
any ideas on a)? b) A c) F d) D e) C, D, E f) E
0.435
13.8
0.435
2.8*10^-4
2.8*10^-4
Thank you a)3.03*10^-8 b) 2.14*10^-8 c) 33.2
27*(4.891*10^-3)^4
Thank you. (a) B E (b) B E (c) E (d) critical micelle concentration (e). Region B (f). 0
a)4.27*10^-6 b)536.7
Jasmin, Thank you for the explanation.
Thank you for a) Any ideas for (b) Which are likely to have much lower critical micelle concentrations? A B C D E (c) Which surfactant is more likely to form non-spherical micelles? A B C D E The surface tension versus concentration for a surfactant in
a) 11.13 b) 10.76
