shushu55
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 4
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 25
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 3

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Questions Asked

shushu55:
Group Title
Gaseous diffusion is used to enrich natural uranium in U235. Use Graham’s law (see feedback) to calculate the ratio of enrichment of U235 …
 updated one year ago
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Mathematics

shushu55:
Group Title
how do i solve this??
The electrolysis of molten Al2O3 at 980 ºC is used to produce metallic aluminum. A current of 609 A is used in the …
 updated one year ago
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Mathematics

shushu55:
Group Title
please helpA halfcell that consists of a copper wire in 1.00 M CuNO3 solution is connected by a salt bridge to a half cell containing a 1.0…
 updated one year ago
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Mathematics

shushu55:
Group Title
1)Calculate Keq for 2 moles of electron(s) in each halfreaction and a standard potential of (0.10) V.
2) Calculate the potential for: …
 updated one year ago
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Mathematics

shushu55:
Group Title
TWO QUESTIONS I KEEP GETTING WRONG PLEASEEEE HELP!
1)Calculate ΔG (in kJ) at 65 oC for the reaction:
…
 updated one year ago
 3 replies
 1 Medal
Mathematics

shushu55:
Group Title
A halfcell that consists of a copper wire in 1.00 M CuNO3 solution is connected by a salt bridge to a half cell containing a 1.00 M X(II) a…
 updated one year ago
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Mathematics

shushu55:
Group Title
2 confusing questions..someone please help!
1)Calculate the work (in kJ) done on the system when 2.20 moles of hydrogen gas are produced…
 updated one year ago
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Mathematics

shushu55:
Group Title
not getting these questions right. Last attempt. Help!
Find the pH of 0.113 M phenol, C6H5OH. The H bonded to the O is acidic, that is,
…
 updated one year ago
 5 replies
 1 Medal
Mathematics

shushu55:
Group Title
why am i not getting this question right? I took the
sqrt of (.83)(1.74*10^5) then the log of the answer I got.
Find the pH of 0.83 M C…
 updated one year ago
 2 replies
 1 Medal
Mathematics

shushu55:
Group Title
Phosphoric acid is a triprotic acid:
H3PO4(aq) +H2O(l) ↔ H3O+(aq) + H2PO4(aq) Ka1 = 7.5 x 103
…
 updated one year ago
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Mathematics

shushu55:
Group Title
1)I found the answer for the first half of the problem, but need help with part two. A buffer solution that is 0.10 M sodium acetate and 0.2…
 updated one year ago
 3 replies
 1 Medal
Mathematics

shushu55:
Group Title
Phosphoric acid is a triprotic acid:
H3PO4(aq) +H2O(l) ↔ H3O+(aq) + H2PO4(aq) Ka1 = 7.5 x 103…
 updated one year ago
 No Medals Yet
Mathematics

shushu55:
Group Title
Phenol (C6H5OH, also called carbolic acid) has a pKa of 9.89. It is used to preserve body tissues and is quite toxic. Calculate the percent …
 updated one year ago
 1 reply
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Mathematics

shushu55:
Group Title
Phenol (C6H5OH, also called carbolic acid) has a pKa of 9.89. It is used to preserve body tissues and is quite toxic. Calculate the percent …
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

shushu55:
Group Title
Calculate the hydroxide ion concentration, [OH], in 0.026 M HBr. Here are my calculations (1.00e14/.026) why isn't my answer right? also t…
 updated one year ago
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Mathematics

shushu55:
Group Title
this is for bioinformatics. Write a Python script that prints the total number of A's in sequences
given in FASTA format in a file called d…
 updated one year ago
 1 reply
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Mathematics

shushu55:
Group Title
Consider the formation of hydrogen fluoride:
H2(g) + F2(g) ↔ 2HF(g)
…
 updated one year ago
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Mathematics

shushu55:
Group Title
a weighted amount of sodium chloride is completely dissolved in a measured volume of 4.00 M ammonia solution at ice temperature, and carbon …
 updated one year ago
 1 reply
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Mathematics

shushu55:
Group Title
2HI(g) ↔ H2(g) + I2(g) Keq = 0.016
Initially a container contains 0.13 M HI and no product. What is the equilibrium concentration of H2?
…
 updated one year ago
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Mathematics

shushu55:
Group Title
can someone please help. I keep getting the answer wrong. I know I have to use the quadratic formula at the end, and I think that's my big…
 updated one year ago
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Mathematics

shushu55:
Group Title
http://njit.mrooms.net/file.php/16756/Images_Chem_126_/equilibrium_20calculation_20harder.gif
ok so i got the answers right. x=.86 y=2.58…
 updated one year ago
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Mathematics

shushu55:
Group Title
When formic acid is heated, it decomposes to hydrogen and carbon dioxide in a firstorder decay:
HCOOH(g) →CO2(g) + H2 (g) …
 updated one year ago
 18 replies
 3 Medals
Mathematics

shushu55:
Group Title
http://njit.mrooms.net/file.php/16756/Images_Chem_126_RH_/ch_1322_kinetics.gif
Under certain conditions, biphenyl, C12H10, can be produc…
 updated one year ago
 1 reply
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Mathematics

shushu55:
Group Title
I only have two more attempts left and I need help on my homework. I am so lost in Chemistry right now, and I need someone to explain this i…
 updated one year ago
 3 replies
 1 Medal
Mathematics

shushu55:
Group Title
I only have two more attempts left and I need help on my homework. I am so lost in Chemistry right now, and I need someone to explain this i…
 updated one year ago
 1 reply
 1 Medal
Mathematics

shushu55:
Group Title
At a pressure of 760 torr, formic acid (HCOOH; boiling point = 100.7 oC) and water (H2O; boiling point = 100.0 oC) form an azeotropic mixtur…
 updated 2 years ago
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Mathematics

shushu55:
Group Title
can someone please help me with this? My homework is due in a few min I have every problem right, but I can't figure this one out. At what a…
 updated 2 years ago
 1 reply
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Mathematics

shushu55:
Group Title
At what angle (in degrees) does firstorder diffraction from layers of atoms 206.4 pm apart occur, using x rays with a wavelength of 188 pm?
 updated 2 years ago
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Mathematics

shushu55:
Group Title
At what angle (in degrees) does firstorder diffraction from layers of atoms 206.4 pm apart occur, using x rays with a wavelength of 188 pm?
 updated 2 years ago
 No Medals Yet
Mathematics

shushu55:
Group Title
Using Table 9.4 (see below), calculate the energy (in kJ) required to break all of the bonds in 2 mole(s) of methanol (CH3OH). http://www.go…
 updated 2 years ago
 2 replies
 1 Medal
Mathematics

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