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Mischa
Questions (57)
Consider this reaction:
3 K2CO3 (aq) + 2 CrCl3 (aq) -> Cr2(CO3)3 (s) + 6 KCl (aq) If 1.2 moles of CrCl3 react, how many moles of
2 answers
1,064 views
how do you pass only part of an Array through a function?
I thought it was something like function(Array, 5); but it's not
0 answers
538 views
how do i find the bifurcation for this:
d^x/dt^2 = -.3 x - (x - 1)/((x - 1)^2 + a^2)^(3/2) - (x + 1)/((x + 1)^2 + a^2)^(3/2)
1 answer
566 views
Let P(t) represent the population of a non-native species introduced to a new area for the purposes of harvesting. Suppose we
0 answers
792 views
Suppose a species of fish in a particular lake has a population that is modeled by the logistic population model with growth
1 answer
1,893 views
suggest a mechanism for
2Fe(3+) + 3I- -> 2Fe(2+) + (I3)-
1 answer
771 views
a very light rigid rod with a length of .500m extends straight out from one end of a meterstick. the meterstick is suspended
1 answer
1,547 views
A car moves with speed v on a horizontal circular track of radius R. The height of the car's center of mass is h, and the
2 answers
917 views
If a sample tube was smudged with a fingerprint when inserted into a spectrometer, what affect would this have on the value of A
3 answers
684 views
Consider an infinite population with 25% of the elements having the value 1, 25% the value 2, 25% the value 3, and 25% the value
0 answers
864 views
A bicycle has wheels 67.3 cm in diameter and pedal cranks 17.5 cm long. The cyclist pedals at a steady cadence of 76.0 rev/min.
0 answers
850 views
The solubility product of Mg(OH)2 is 1.2 x 10^-11. What minimum OH- concentration must be attained (for example, by adding NaOH)
2 answers
2,317 views
which is the least stable isomer of C4H8:
methyl cyclopropane or cyclobutane and why?
1 answer
1,283 views
which is more stable:
methyl cyclopropane or cyclobutane and why?
1 answer
969 views
The solubility of KNO3 is 155 g per 100 g of water at 75 degrees celcius and 38.0 g at 25 degrees celcius. What mass (in grams)
1 answer
1,641 views
A hemoglobin molecule (molar mass =65000 g) can bind up to 4 oxygen molecules. In a certain experiment a .085-L solutoin
0 answers
1,067 views
The fuel value of hamburger is 3.6kcal/g. If a man eats 1 pound of hamburger for lunch and if none of the energy is stored in
1 answer
958 views
What hybrid orbitals are used by nitrogen atoms in the following specis:
(a)NH3 (b)H2N-NH2 (c)NO3- I got sp^2 for (a), but I'm
3 answers
2,458 views
I have to do an observational study for an AP statistics course. Does anyone have any good ideas?
1 answer
542 views
After a .800-nm x-ray photon scatters from a free electron, the electron recoils with a speed equal to 1.20 x 10^6 m/s. (a) What
2 answers
1,151 views
A construction worker uses a steep tape to measure the length of an aluminum support column. If the measured length is 18.700 m
2 answers
918 views
What is an example of two events that are neither disjoint nor independent?
(I have no idea how that would even work)
3 answers
1,364 views
is it underfunded or under funded?
1 answer
410 views
Does anybody know a site that rates the education systems of countries? I know Britain's number one...
1 answer
445 views
What are examples of when friction can increase an objects Kinetic Energy?
1 answer
497 views
for a free throw in basketball,find an equation for the final angle to go into the hoop in terms of y and x to the hoop and the
2 answers
552 views
Find m and b so that y=mx+b is a solution to the differential equation
dy/dx=1/2x+y-1
2 answers
2,616 views
Find the velocity of a satellite orbiting above the equator of the earth in geosynchronous orbit (Period=24 hours) in km/hr.
The
3 answers
567 views
Help! I have no idea how to do this.
The earth's orbit is nearly circular with a radius R=93x10^6 miles (the eccentricity is
1 answer
586 views
I am doing a works cited page in MLA format.
If I have two articles that are from the same website, just different places, do I
1 answer
899 views
I need to write 2 process essays. Any good ideas? I know there's so many things I can do, but it's hard to come up with a good
2 answers
591 views
I am not sure about the ordering of the words. Are the following correct?
Do you speak French? Vous parlez francaise? I speak a
5 answers
835 views
Based on all the questions I've asked. I believe there are no mistakes in these sentences?
-J'aime la musique japonaise. -J'ai un
6 answers
736 views
When I say I have one brother and he is 27 years old, do I say
J'ai un le fr¨¨re or J'ai un fr¨¨re Il a vingt sept ans.
2 answers
574 views
I have to fill out this chart, I want to know did i do it correctly, thanks.
Etre: Tu es Aimer: Tu aimes Habiter: tu habites
4 answers
608 views
I know that for a male to say that he is french, we use francais, and for a female, we use francaise.
But when a female says that
13 answers
1,018 views
Suppose that there is a model with two constraints
1) 120x1+160x2 <=(less than or equal to)450 2) 3x1+10x2 <= 25 and there is a
0 answers
551 views
Suppose there's a model with 2 constraints originally. Now that another constraint is added. Which of the following are
0 answers
632 views
I need a title for a narrative about my fear of snakes and the time one got loose in our classroom. Any witty ideas?
3 answers
503 views
Can anyone help me interpret this poem/prayer? What does it reveal about Mesopotamian religious beliefs and practices?
Thanks!!
1 answer
661 views
I'm suppose to figure out what the leg is a metaphor for in the following story. I can't figure it out. Any suggestions?!
Letter
0 answers
679 views
given x=2cos(t)+t*sin(t) and y=2sin(t)-t*cost(t), with t:[pi, 2pi]
find all critical values. (4 answers)
0 answers
443 views
given x=2cos(t)+t*sin(t) and y=2sin(t)-t*cost(t), with t:[pi, 2pi]
find all critical values. by finding dy/dx and setting it
0 answers
553 views
let y=2x-8. What is the minimum value of the product xy?
I'm not really sure how to do this... I tried taking x*(2x-8), and the
0 answers
973 views
I need to find the centripetal acceleration of my clothes dryer. How would I go about doing it... Would the tangential speed
0 answers
563 views
A force of 250 N is required to stretch a spring 5m from rest. Using Hooke's law, F=kx, how much work, in joules, is required to
1 answer
1,528 views
An electron and a proton are each placed at rest in an external uniform electric field of magnitude 520 N/C. Calculate the speed
0 answers
776 views
Three point charges, q1, q2, and q3, lie along the x-axis at x=0, x=3 cm, and x=5 cm, respectively. Calculate the magnitude and
3 answers
6,092 views
What is the area of the region in the first quadrant enclosed by the graph of y=e^(x^2/4) and the line y=0.5?
When I graphed the
1 answer
1,487 views
Does 1/ln(x+1) converge or diverge?
I've tried the nth term test, limit comparison test, and integral test. All I get is
0 answers
950 views
A bird perched on a swing the sits 8 cm below a bar has a mass of 52 g, and the base of the swing has a mass of 153 g. The swing
1 answer
1,088 views
Boats A and B leave the same place at the same time. Boat A heads due North at 12 km/hr. Boat B heads due East at 18 km/hr.
0 answers
1,520 views
The radius of a sphere is increasing at a rate proportional to its radius. If the radius is 4 initially, and the radius is 10
0 answers
1,595 views
x/3=2 x=2*3 x=6
x/6=3 x=3*6 x=18 How would I get the missing number? ?/3 = 2 ?/6 = 3 What number divided by 3 will equal 2.
0 answers
612 views
A worker pushes a 1500 N crate with a horizontal force of 345 N a distance of 24 m. Assume the coefficient of kinetic friction
1 answer
2,951 views
A student pulls on a rope attached to a box of books with a mass of 35.0 kg and moves the box up a ramp at 12 degrees with the
0 answers
919 views
The volume of a solid is given by V=pi x^2(lnx)^2. what is the approximate change in the volume when x is increased from 2.718
1 answer
547 views
