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Questions Asked on August 5, 2007

There are three xylenes. Their melting points are 13 degrees C,-24 degrees C, and -48 degrees C. Nitration of the isomer with
1. 0 answers
2. asked by damon
3. 497 views
Determine which of the sets of vectors is linearly independent.A: The set {p1, p2,p3} where p1(t) = 1, p2(t) = t^2, p3(t) = 3 +
1. 0 answers
2. asked by zinnia
3. 550 views
A 7.4 Ù square loop, whose dimensions are4:5 m x 4:5 m, is placed in a uniform 0.093 T magnetic field that is directed
1. 0 answers
2. asked by matt
3. 495 views
What would happen to Kc values in an experiment if the Beer's law constance (k) value used was low ( e.g you used 4000/M when
1. 1 answer
2. asked by matt
3. 1,327 views
Show that for the titration of a weak acid, HA, with NaOH solution, at half-titer, pH = pKa.Please explain your answer. Thank
1. 0 answers
2. asked by phil
3. 552 views
Imagine you had made an RNA copy of each strand of a DNA double helix. If you were now to mix these two RNA single-strand copies
1. 1 answer
2. asked by bobpursley
3. 2,235 views
We are not going to do that work for you, but will be glad to help you.The unit sphere is the sphere with radius 1 centered in
1. 0 answers
2. asked by drwls
3. 1,190 views
1. Define what is meant by the limit of a series.Please try to explain in words more than symbols. The limit is the result you
1. 0 answers
2. asked by capecod
3. 488 views
Direct variationAn airplane is traveling at a constant rate of 450 mi/h. Write an equation that shows how far the plane travels
1. 0 answers
2. asked by joyce
3. 545 views
Rewrite the equation 4x – 6y = –30 as a function of x.Subtract 4x from both sides of the equation. Then divide both sides by
1. 0 answers
2. asked by angel
3. 452 views
a.)At rest, a car's horn sounds at a frequency of 410 Hz. The horn is sounded while the car is moving down the street. A
1. 0 answers
2. asked by sanchi
3. 1,013 views
10.0 moles of NH3 and 10.0 moles of H2 are introduced into a 1.00 L flask. At equilibrium, 3.0 moles of NH3 gas remain.
1. 0 answers
2. asked by patrick
3. 602 views
Determine whether {v1, v2, v3} is a basis for R3v1 = [1] [-3] [1] v2 = [-3] [8] [4] v3 = [2] [-2] [2] Put the vectors as rows or
1. 0 answers
2. asked by zinnia
3. 1,198 views
Ethyl acetoacetate is a liquid. The value of the tautomeric constant for neat ethyl acetoacetate is Kt = .079. What is the
1. 0 answers
2. asked by howie
3. 493 views
Of all possible DNA nucleotide sequences, what sequence of base pairs would dissociate most easily into single strands if the
1. 0 answers
2. asked by H.P.
3. 551 views
The basicity constant of pyridine can be expressed as pKb = 8.75 what will be the pH of a 1M (1 mole per liter) solution of
1. 1 answer
2. asked by howie
3. 821 views
A resistor (R = 900 ), a capacitor (C = 0.25 µF), and an inductor (L = 2.0 H) are connected in series across a 240 Hz AC source
1. 0 answers
2. asked by asmi
3. 1,256 views
Here is a question which for some reason I feel very unsure with. Can you guys take a look and see if you agree or disagree with
1. 0 answers
2. asked by who that
3. 477 views
Hi, I have this quick question:A Java interface can be used almost anywhere a class can be. Describe the one place/situation
1. 0 answers
2. asked by who that
3. 502 views
An electron of kinetic energy 41 keV moves in a circular orbit perpendicular to a magnetic field of 0.330 T.(a) Compute the
1. 0 answers
2. asked by --pat--
3. 696 views
What is the minumum potential that must be applied across an x-ray tube in order to observe each of the following? What is the
1. 0 answers
2. asked by --pat--
3. 426 views
Determine the fraction of the energy radiated by the sun in the visible region of the spectrum (350 nm to 700 nm). (Assume the
1. 0 answers
2. asked by --pat--
3. 1,095 views
hican you please help me with this particular question? thanks a lot ___________________________________ The work function of a
1. 0 answers
2. asked by duda
3. 597 views
Can someone provide me with some assistance in answering this question..A company manufacturers batteries in BATCHES of 18 and
1. 1 answer
2. asked by john
3. 751 views
Which phrase fosters creativity?1. "There is no such thing as a purple cat." 2. "I'll show you how to do it." 3. "What is this a
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2. asked by Alana
3. 553 views
(1.00 x 10^5)NM - (3.96 x 10^3) NM = ?I think that since they're both NM don't you think that you can just subtract them? 96,040
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2. asked by Anonymous
3. 404 views
Potassium Carbonate + Sodium Bicarbonate...toxic or not? Saw a actual bottle of this stuff in the supermarket...label says oddly
1. 0 answers
2. asked by ~christina~
3. 470 views
Ok, blonde moment here, Kb is the same as Ka but just for bases and Ka is for acids correct?right. Ka is the ionization constant
1. 0 answers
2. asked by Taasha
3. 723 views
Find two consecutive even integers that have a sum of 450.224+226=450 If two consecutive even integers, x and x + 2, add up to
1. 0 answers
2. asked by Shawn
3. 424 views
Factor out:64x^3 + 1 It is a binomial times a trinomial (4x+1)(16x^2-4x+1) should work. Check my math again! [8x^(3/2) -
1. 0 answers
2. asked by Juri
3. 460 views
Calculate the hydronium ion concentration in 50.0 mL of 0.10M NaH2AsO4.and we are given K1 = 6.0E-3, K2 = 1.1E-7 and K3 =
1. 0 answers
2. asked by Vic
3. 1,056 views
why does methylated spirits evaporate faster than water?less surface tension - water has one of the most abnormally high levels
1. 2 answers
2. asked by hello
3. 1,445 views
Why does CH3Br react faster with hydroxyl ions (OH^-) than CH3Cl?In the halogen series, Br has a weaker bond with the CH3 than
1. 0 answers
2. asked by Vic
3. 606 views
Which aqeuous solution has a freezing point closest to that of 0.30M C12H22O11?A) 0.075M AlCl3 B) 0.15M CuCl2 C) 0.30M NaCl D)
1. 1 answer
2. asked by Vic
3. 2,622 views
Having a hard time finding websites on Puerto Ricans living in America and identifying the linguistic, political, social,
1. 0 answers
2. asked by Betty
3. 484 views
If Z is a standard normal variable, find the probability that Z lies between -1.10 and -0.36Use the table of the area under the
1. 0 answers
2. asked by john
3. 1,188 views
Can someone assist me in answering this question.Use the given values of n and p to find the mimimum usual value of u-2standard
1. 0 answers
2. asked by natalie
3. 473 views
Find equations for the asymptotes of the hyperbola x2/9 - y2/81 = 1Rewrite the equation as (x/3)^2 - (y/9)^2 = 1 When both x and
1. 0 answers
2. asked by zinnia
3. 599 views
I having a hard time with this word problem: A backyard has dimensions 4 and 2/5 yards by 2 and 4/5 yards. What is the area of
1. 0 answers
2. asked by jay's gyrl
3. 736 views
How much more would you expect to pay for a home that has four bedrooms than for a home that has three bedrooms? Here are some
1. 0 answers
2. asked by Kayse
3. 685 views
For some reason I didn't get the entire questions submitted on the previous email. I really need help with the last part - the
1. 0 answers
2. asked by Kayse
3. 464 views
What is a better way to remember your timed tables? Is there a game or a song you can go by or something?These websites have
1. 0 answers
2. asked by Mack
3. 528 views
does anyone know anyting about standard deviation...I have no idea what it is! http://en.wikipedia.org/wiki/Standard_deviation
1. 0 answers
2. asked by Kaz
3. 557 views
Does retained earnings include investment capital?I thought no. I thought retained earnings is cumulative net income -
1. 2 answers
2. asked by AcctStudent
3. 645 views
What are some arguments for and against HIPAA?This article details some of the arguments for and against HIPAA.
1. 0 answers
2. asked by Janet
3. 517 views

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