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March 23, 2012
The rate constant for this first-order reaction is 0.320 s–1 at 400 °C.
A--> Products How long (in seconds) would it take for
3 answers
asked by
Katie
13,438 views
When the following reaction is balanced in acid solution, the coefficient of H+(aq) will be:
Cr2O72-(aq) + Sn2+(aq) --> Cr3+(aq)
5 answers
asked by
Becca
7,180 views
Playing in the street, a child accidentally tosses a ball at 21 m/s toward the front of a car moving toward him at 18 m/s. What
3 answers
asked by
Eliana
6,168 views
if y varies directly as x, if y=80 when x=32, find x if y=100
8 answers
asked by
Randy
6,068 views
The reaction described by this equation
O3(g) + NO(g) -- O2(g) + NO2(g) has the following rate law at 310 K. rate of reaction =
4 answers
asked by
Katie
5,382 views
The rate constant for this first-order reaction is 0.0570 s–1 at 400 °C.
A-->Products After how many seconds will 14.0% of the
2 answers
asked by
k
4,787 views
a hose pipe ejects water at a speed of 0.3m/s through a hole of area 50 cm*m.if the water strikes a wall normally, calculate the
2 answers
asked by
mani
4,182 views
Given acidity constant,Ka of benzoic acid is 6.28 X 10^-5. pH of 0.15 molar solution of this acid is ?
Here is my method: Benzoic
1 answer
asked by
Meenaakshi
3,769 views
A 55.0 kg circus performer oscillates up and down at the end of a long elastic rope at a rate of once every 7.20 s. The elastic
3 answers
asked by
Katie
3,384 views
QUADRILATERAL ABCD IS A RECTRANGLE
IF AC=2X+13 AND DB=4X-1 FIND DB
3 answers
asked by
TJ
2,314 views
Both carboxylic acids and phenols react with strong bases to produce _____.
gaseous products the conjugate base of the carboxylic
3 answers
asked by
Krystal
2,199 views
For a test of Ho: p = 0.5, the z test statistic equals 1.52. Find the p-value for Ha: p > 0.5.
3 answers
asked by
M
2,165 views
Wildlife biologists fire 22g rubber bullets to stop a rhinoceros charging at 0.84 m/s. The bullets strike the rhino and drop
4 answers
asked by
Eliana
2,126 views
Memorandum part.
Draft an interoffice memorandum to Miriam Hopkins, the Director of Human Resources: A. Assume that you've
1 answer
asked by
Shawna
2,050 views
At constant pressure, which of these systems do work on the surroundings? Check all that apply.
A(s) + 2B(g) ---> C(g) 2A(g) +
2 answers
asked by
Yasha
2,031 views
Write the chemical equation for the reaction that occurs when you add NaOH solution to NaH2PO4/Na2HPO4 buffer solution
1 answer
asked by
Megan
1,836 views
sammi cuts a pizza into 8 equal parts she eats 2 pieces .what fraction of the pizza is left
3 answers
asked by
nicole silva
1,817 views
Translate the point (5, 5) to the new origin given (h, k). Given center (h, k) = (- 3, - 3), find point (x', y').
Translate the
2 answers
asked by
Sebastian
1,784 views
A tent is shaped like a pyramid. It has a square base measuring 8 feet on a side and a height of 6 feet. What is the volume of
2 answers
asked by
geri
1,762 views
Draft an email of at least four complete sentences to Deb Walker the designated trainer:
Confirm the arrangements for the seminar
1 answer
asked by
Shawna
1,648 views
Need some adverb help. In the sentence...The man looked extremely nervous. I know extremely is an adverb. Is nervous an adverb
2 answers
asked by
Brandi
1,572 views
What are the chances that a person who is murdered actually knew the murderer? About 64% of people who are murdered actually
1 answer
asked by
lola
1,571 views
500.0mL of 0.220 mol/L HCl(aq) was added to a high quality insulated calorimeter containing 500.0mL of 0.200mol/L NaOH(aq).Both
3 answers
asked by
Meenaakshi
1,518 views
A parallelogram is formed by R^3 by the vectors PA=(3,2,-3) and PB=(4,1,5). The point P=(0,2,3).
a) what are the location of the
1 answer
asked by
Melinda
1,510 views
Memorandum part.
Draft an interoffice memorandum to Miriam Hopkins, the Director of Human Resources: A. Assume that you've
3 answers
asked by
Shawna
1,495 views
Suppose you want to heat a mug of water (250mL) from room temperature at 25oC to 100oC to make a cup of tea. How much energy (in
1 answer
asked by
lop
1,421 views
Can you label all the functional groups of the Sucrose Molecule?
2 answers
asked by
Anne
1,386 views
In class of 125 students, 70 students passed in Math, 56 students passed in Statistics, and 30 passed in both. The probability
2 answers
asked by
Anonymous
1,348 views
a typical alberta home heated with natural gas assume methane CH4 (g) consuems 2.00ML of natural gas during the month of
2 answers
asked by
anita
1,324 views
A box has a bottom with one edge 2 times as long as the other. If the box has no top and the volume is fixed at , what
1 answer
asked by
John
1,316 views
an object accelerates uniformly along a straight line from a velocity of 10ms-1 until 25ms-1 in 5s.
a)the velocity of the object
2 answers
asked by
shiva
1,305 views
A 7000-kg freight car rolls along rails with negligible friction. The car is brought to rest by a combination of two coiled
0 answers
asked by
Anonymous
1,296 views
A hemisphere of radius 7 sits on a horizontal plane. A cylinder stands with its axis vertical, the center of its base at the
1 answer
asked by
John
1,284 views
Let R be the region bounded by the y-axis and the curves y = sin x and y = cos x. Answer the following.
a)Find the exact area of
1 answer
asked by
ronnieday
1,170 views
Writeacher, can you please check these sentences? Thank you very much.
1) My list included 27 students, including an older
1 answer
asked by
Matthew
1,155 views
The Denver Post stated that 80% of all new products introduced in grocery stores fail (are taken off the market) within 2 years.
0 answers
asked by
lola
1,147 views
A 64 kg skater, at rest on frictionless ice, tosses a 12 kg snowball with velocity by v = 53i+ 14.0j m/s, where the x- and y-
1 answer
asked by
Eliana
1,131 views
A diver is jumping straight up with 2 m/s from a 15 meter platform. Calculate the maximum height of the diver, the diver’s
2 answers
asked by
Melissa
1,120 views
Use the substitution method to solve
-x + 3y=24 5x +8y=-5
2 answers
asked by
Jake
1,117 views
Can you please check these sentences and tell me which one are possible?
Thank you. 1) He didn't let on the secret to anyone. He
1 answer
asked by
Matthew
1,113 views
I need help putting these in chronological order:
Munich agreement Attack on Poland Invasion of the Soviet Union Recapture of the
2 answers
asked by
mysterychicken
1,112 views
BUSINESS LETTER ASSIGNMENT
Assigment: write a business letter according to the background. Background:Assume that you’ve worked
1 answer
asked by
Shawna
1,104 views
A spherical Christmas tree ornament is
5.34 cm in diameter. What is the magnification of the image of an object placed 10.3 cm
1 answer
asked by
amanda and leah
1,096 views
A 59.1 kg ice skater, moving at 13.3 m/s, crashes into a stationary skater of equal mass. After the collision, the two skaters
0 answers
asked by
Anonymous
1,062 views
How long can we use a bottle containing anti-bumping granules?
Can it be used indefinitely?
2 answers
asked by
anne
1,049 views
sinx(ccscx-sinx=cos^x
1 answer
asked by
Anonymous
1,040 views
a construction worker accidentally knocks a brick from a building so that it falls in 4s to the ground.calculate
a) the velocity
1 answer
asked by
shiva
1,035 views
secx/sinx-sinx/cosx=cotx
1 answer
asked by
Anonymous
1,026 views
I really don't understand rate law. Could you explain that and help with this problem please?
Determine the average rate of
2 answers
asked by
Katie
1,015 views
sinx/1-cosx+1-cosx/sinx=2cscx
0 answers
asked by
Anonymous
1,003 views
A solution of household bleach contains 5.25% sodium hypochlorite, NaOCl, by mass. Assuming that the density of bleach is the
0 answers
asked by
Jematormal91
996 views
At a small college it is known from previous years that 35% of all college freshman start in college algebra. The new freshman
1 answer
asked by
lola
987 views
Let f(x) = ax^3 + bx^2 + 3x – 4. If f(x) is divided by (x – 2), the remainder is 2. When it is divided by (x – 1), the
1 answer
asked by
rick
981 views
A rectangular dog pen is to be sectioned off into two separate areas and made to enclose area of 225 feet. Find the dimensions
0 answers
asked by
Ron
972 views
how long will it take to earn $568.75 in interest if $2500 is invested at a 6.5% annual interest rate
2 answers
asked by
tatiana
966 views
A triathlete swims 1200 m due to east followed by 1500 m due northeast (45o). What is the overall displacement? (magnitude and
2 answers
asked by
Melissa
965 views
Find the power input of a force
F=(7 N)ˆý + (3 N) ˆk acting on a particle that moves with a velocity v = (6 m/s)ˆý. Answer
1 answer
asked by
Ashley
951 views
Can anyone explain this following quote:
"Freedom is a right to one's dignity as a man" --Archibald MacLeish
2 answers
asked by
Ahamed
947 views
Calculate the final temperature when a 16.2 gram sample of ice at 0oC is placed into a styrofoam cup containing 128 grams of
1 answer
asked by
Chase
939 views
You mix 1.00 L of 2.00 M BaCl2 with 1.00 L of 2.00 M AgNO3. What compounds remain in solution, and what are their
2 answers
asked by
Alicia
931 views
Rectangular prism is defined by vectors (2,0,0)(0,9,5) and (0,0,3). Find the volume.
I have done this so far, would anyone please
2 answers
asked by
Jake
910 views
i need a molecular, ionic and net ionic equation for this :
K_3 PO_4 + BaCl_2
1 answer
asked by
jhong
901 views
Suppose that you select 2 cards without replacement from an ordinary deck of playing cards.
a) If the first card that you select
2 answers
asked by
Sam
895 views
Find the power of a force
F= (10 N)ˆý +(−4 N)ˆj if the velocity v = (−4 m/s)ˆý +(4 m/s)ˆj. Answer in units of W (^i and
1 answer
asked by
Ashley
888 views
When px^3 – 2px^2 + 3x – p is divided by (x – 1), the remainder is -5. Find p.
1 answer
asked by
rick
872 views
An experiment makes use of a water manometer attached to a flask. Initially the two columns in the gas manometer are at the same
0 answers
asked by
ms
825 views
Larry & Willa are each reading the same book. Larry has read 2/3 of the book. Willa said that she has read 4//6 of the book, so
2 answers
asked by
Neil
798 views
Camera lenses are described in terms of their
focal length. A 50 mm lens has a focal length of 50 mm. A camera is focused on an
1 answer
asked by
amanda and leah
793 views
The Energy from glucose is obtained from the oxidation reaction
C6H12O6 + 6O2 --> 6CO2 + 6H2O How would a similar reaction look
1 answer
asked by
James
783 views
Locate indiana state’s constitution and examine the major elements and articles of the constitution. Review its contents and
2 answers
asked by
jamie
779 views
solve for x given that (1/8)^12x =2^x+3
1 answer
asked by
mazuba
775 views
Solid ammonium nitrate can decompose to dinitrogen oxide gas and liquid water. What is delta G at 298K?
2 answers
asked by
Emily
766 views
How do you find the surface area of Prisms and cylinders? The stuff in my math workbook does not help me like at all! Please
1 answer
asked by
Jessie
759 views
A child pushes a merry go-round from rest to a final angular speed of 0.6 rev/s with constant angular acceleration. In doing so,
2 answers
asked by
Adam
758 views
cotxsinx=cosx
1 answer
asked by
olivia
758 views
in "the night the bed fell" how does the fact that all of the character were alseep when thurber's bed fell cause them to act
5 answers
asked by
Taylor
757 views
3x-5y=24 3x+5y=6
1 answer
asked by
Jenni
754 views
The data set given below has y^ = 3x - 5 for its regression equation. Find the standard error of estimate.
x 3 2 5 8 y 4 1 10 19
2 answers
asked by
ericka
742 views
each set of probabilities is associated with a rolling cube. What numbers are marked on the faces of each cube?
P(2)=1/3 P(4)=1/3
1 answer
asked by
Max
722 views
When solving Hess law problems,do we need to use all the equations given to get the Htotal or just choose the relevant equations
1 answer
asked by
Meenaakshi
713 views
hello i'm doing a redox stoichiometry lab having to do with titration
6H +5H2O2 + 2MnO4 -- 5O2 + 2Mn2+ + 8H2O Why is H2O2 the
1 answer
asked by
Jo
707 views
The weights of adult long-tongued fruit bats are known to be normally distributed with a mean of 20.22 grams and a standard
2 answers
asked by
Becky
700 views
2) A car traveling with 5 m/s encounters a deer. The drivers slams on the breaks, the breaks lock. The car
skids to a complete
1 answer
asked by
Mary
694 views
Four boys sit down to play a game of marbles. They empty the bag of marbles and divide the marbles among themselves, and they
1 answer
asked by
LISA
692 views
in 10-15 lines critically discuss five ways in which the human or environmental impact causes within any community in South
16 answers
asked by
Anonymous
687 views
CAUSE AND EFFECT
A CAUSE TELLS WHY SOMETHING HAPPENED. AN EFFECT IS WHAT HAPPENED. WORDS SUCH AS BECAUSE AND SO ARE CLUES THAT
3 answers
asked by
dw
687 views
Thesis statment :
The physiology of alcohol dependence causes physiological aspects of the obstetric and the effect of alcohol
1 answer
asked by
Denise
686 views
My third piece.
Draft an email of at least four complete sentences to Deb Walker, the designated trainer: A. Confirm the
2 answers
asked by
Shawna
682 views
the circle is given by the equation x^2+y^2+8x-7/2y=0
find (i)coordinates of the centre and the radius (ii)coordinates of the
1 answer
asked by
mwaba
681 views
two records and three tapes cost $31.three records and two tapes cost $29 .find the cost of each record and each tape
1 answer
asked by
geeh mommah
674 views
In some the sections in collection 6, setting plays an important role in shaping the writers idea of what home is,using a chart
1 answer
asked by
MCBOBO
659 views
given O(0,0) and N(12,0) write an equation in terms of x and y for all points P(x,y) such that segment PO is perpendicular to
1 answer
asked by
tatiana
657 views
How did the acceptance of Christianity change life in the Roman empire?
3 answers
asked by
Cicilia
653 views
A vibration platform oscillates up and down with an amplitude of 8.8 cm at a controlled variable frequency. Suppose a small rock
1 answer
asked by
Katie
648 views
How much heat energy is given off when one kilogram of hydrogen gas at 25C and one atmosphere is combined with enough oxygen gas
3 answers
asked by
Kevin
647 views
beth walks 2 blocks in 15 minutes . how many blocks would beth walk if she walked at the same rate for an hour?
1 answer
asked by
Tyshae
633 views
how did portrait painting change from the 1500s to the 1600s
1 answer
asked by
ryna
624 views
A fully sealed 50m^3 room at atmospheric pressure and temperature 20C contains two ballons, one containing helium and the other
0 answers
asked by
Chem123
619 views
|C|=5 and |D|=8. The angle formed by vectors C and D is 35 degrees, and the angle formed by vectors A and C is 40 degrees.
1 answer
asked by
Jake
615 views
If the sun rises at 6 AM and is directly overhead at 12 noon, estimate the time (hour and minutes) when a 34-foot tree will have
1 answer
asked by
Dan
610 views
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