Questions LLC
Login
or
Sign Up
Ask a New Question
Chemgam
Questions and answers by
Chemgam
Questions (14)
(a) Propylene, H2C=CH-CH3, can be reacted to form a polymer known as polypropylene (PP). What type of polymerization reaction is
5 answers
1,411 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
3 answers
430 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
6 answers
1,041 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
5 answers
419 views
Shown below is a rough sketch of the unary phase diagram (pressure vs. temperature) for carbon dioxide , dry ice. Note the
6 answers
609 views
(a) What is the distance between second nearest neighbor atoms in vanadium? Express your answer in cm.
(b) What is the
10 answers
436 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
443 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
1,109 views
(a) Silicon (50 g) has been doped with 27 mg of antimony (Sb). Determine the concentration of free charge carriers
7 answers
462 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
7 answers
452 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
4 answers
2,027 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
3 answers
651 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
3 answers
992 views
Consider the following surfactants:
(a) Which are nonionic surfactants? i) A ii) B iii)C iv) D v) E
7 answers
893 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
