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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 answer
asked by
damon
490 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 answer
asked by
zinnia
534 views
A 7.4 Ù square loop, whose dimensions are
4:5 m x 4:5 m, is placed in a uniform 0.093 T magnetic field that is directed
1 answer
asked by
matt
483 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
3 answers
asked by
matt
1,315 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 answer
asked by
phil
543 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
3 answers
asked by
bobpursley
2,224 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 answer
asked by
drwls
1,173 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 answer
asked by
capecod
475 views
Direct variation
An airplane is traveling at a constant rate of 450 mi/h. Write an equation that shows how far the plane travels
1 answer
asked by
joyce
534 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 answer
asked by
angel
443 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 answer
asked by
sanchi
1,004 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.
2 answers
asked by
patrick
589 views
Determine whether {v1, v2, v3} is a basis for R3
v1 = [1] [-3] [1] v2 = [-3] [8] [4] v3 = [2] [-2] [2] Put the vectors as rows or
1 answer
asked by
zinnia
1,183 views
Ethyl acetoacetate is a liquid. The value of the tautomeric constant for neat ethyl acetoacetate is Kt = .079. What is the
1 answer
asked by
howie
484 views
Of all possible DNA nucleotide sequences, what sequence of base pairs would dissociate most easily into single strands if the
1 answer
asked by
H.P.
544 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
3 answers
asked by
howie
810 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
3 answers
asked by
asmi
1,241 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 answer
asked by
who that
469 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 answer
asked by
who that
493 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
3 answers
asked by
--pat--
680 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 answer
asked by
--pat--
419 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
2 answers
asked by
--pat--
1,084 views
hi
can you please help me with this particular question? thanks a lot ___________________________________ The work function of a
2 answers
asked by
duda
587 views
Can someone provide me with some assistance in answering this question..
A company manufacturers batteries in BATCHES of 18 and
2 answers
asked by
john
728 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
1 answer
asked by
Alana
541 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
1 answer
asked by
Anonymous
395 views
Potassium Carbonate + Sodium Bicarbonate...
toxic or not? Saw a actual bottle of this stuff in the supermarket...label says oddly
1 answer
asked by
~christina~
461 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 answer
asked by
Taasha
714 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 answer
asked by
Shawn
415 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 answer
asked by
Juri
454 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 =
3 answers
asked by
Vic
1,045 views
why does methylated spirits evaporate faster than water?
less surface tension - water has one of the most abnormally high levels
4 answers
asked by
hello
1,393 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 answer
asked by
Vic
559 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)
4 answers
asked by
Vic
2,611 views
Having a hard time finding websites on Puerto Ricans living in America and identifying the linguistic, political, social,
1 answer
asked by
Betty
473 views
If Z is a standard normal variable, find the probability that Z lies between -1.10 and -0.36
Use the table of the area under the
1 answer
asked by
john
1,148 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 answer
asked by
natalie
465 views
Find equations for the asymptotes of the hyperbola x2/9 - y2/81 = 1
Rewrite the equation as (x/3)^2 - (y/9)^2 = 1 When both x and
2 answers
asked by
zinnia
591 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 answer
asked by
jay's gyrl
717 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 answer
asked by
Kayse
678 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 answer
asked by
Kayse
454 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 answer
asked by
Mack
519 views
does anyone know anyting about standard deviation...
I have no idea what it is! http://en.wikipedia.org/wiki/Standard_deviation
1 answer
asked by
Kaz
522 views
Does retained earnings include investment capital?
I thought no. I thought retained earnings is cumulative net income -
3 answers
asked by
AcctStudent
630 views
What are some arguments for and against HIPAA?
This article details some of the arguments for and against HIPAA.
1 answer
asked by
Janet
507 views
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