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Questions Asked on 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
1. 3 answers
2. asked by Katie
3. 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)
1. 5 answers
2. asked by Becca
3. 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
1. 3 answers
2. asked by Eliana
3. 6,168 views
if y varies directly as x, if y=80 when x=32, find x if y=100
1. 8 answers
2. asked by Randy
3. 6,068 views
The reaction described by this equationO3(g) + NO(g) -- O2(g) + NO2(g) has the following rate law at 310 K. rate of reaction =
1. 4 answers
2. asked by Katie
3. 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
1. 2 answers
2. asked by k
3. 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
1. 2 answers
2. asked by mani
3. 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. 1 answer
2. asked by Meenaakshi
3. 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
1. 3 answers
2. asked by Katie
3. 3,384 views
QUADRILATERAL ABCD IS A RECTRANGLEIF AC=2X+13 AND DB=4X-1 FIND DB
1. 3 answers
2. asked by TJ
3. 2,314 views
Both carboxylic acids and phenols react with strong bases to produce _____.gaseous products the conjugate base of the carboxylic
1. 3 answers
2. asked by Krystal
3. 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.
1. 3 answers
2. asked by M
3. 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
1. 4 answers
2. asked by Eliana
3. 2,126 views
Memorandum part.Draft an interoffice memorandum to Miriam Hopkins, the Director of Human Resources: A. Assume that you've
1. 1 answer
2. asked by Shawna
3. 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) +
1. 2 answers
2. asked by Yasha
3. 2,031 views
Write the chemical equation for the reaction that occurs when you add NaOH solution to NaH2PO4/Na2HPO4 buffer solution
1. 1 answer
2. asked by Megan
3. 1,836 views
sammi cuts a pizza into 8 equal parts she eats 2 pieces .what fraction of the pizza is left
1. 3 answers
2. asked by nicole silva
3. 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
1. 2 answers
2. asked by Sebastian
3. 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
1. 2 answers
2. asked by geri
3. 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. 1 answer
2. asked by Shawna
3. 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
1. 2 answers
2. asked by Brandi
3. 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. 1 answer
2. asked by lola
3. 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
1. 3 answers
2. asked by Meenaakshi
3. 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. 1 answer
2. asked by Melinda
3. 1,510 views
Memorandum part.Draft an interoffice memorandum to Miriam Hopkins, the Director of Human Resources: A. Assume that you've
1. 3 answers
2. asked by Shawna
3. 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. 1 answer
2. asked by lop
3. 1,421 views
Can you label all the functional groups of the Sucrose Molecule?
1. 2 answers
2. asked by Anne
3. 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
1. 2 answers
2. asked by Anonymous
3. 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
1. 2 answers
2. asked by anita
3. 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. 1 answer
2. asked by John
3. 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
1. 2 answers
2. asked by shiva
3. 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
1. 0 answers
2. asked by Anonymous
3. 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. 1 answer
2. asked by John
3. 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. 1 answer
2. asked by ronnieday
3. 1,170 views
Writeacher, can you please check these sentences? Thank you very much.1) My list included 27 students, including an older
1. 1 answer
2. asked by Matthew
3. 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.
1. 0 answers
2. asked by lola
3. 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. 1 answer
2. asked by Eliana
3. 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
1. 2 answers
2. asked by Melissa
3. 1,120 views
Use the substitution method to solve-x + 3y=24 5x +8y=-5
1. 2 answers
2. asked by Jake
3. 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. 1 answer
2. asked by Matthew
3. 1,113 views
I need help putting these in chronological order:Munich agreement Attack on Poland Invasion of the Soviet Union Recapture of the
1. 2 answers
2. asked by mysterychicken
3. 1,112 views
BUSINESS LETTER ASSIGNMENTAssigment: write a business letter according to the background. Background:Assume that you’ve worked
1. 1 answer
2. asked by Shawna
3. 1,104 views
A spherical Christmas tree ornament is5.34 cm in diameter. What is the magniﬁcation of the image of an object placed 10.3 cm
1. 1 answer
2. asked by amanda and leah
3. 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
1. 0 answers
2. asked by Anonymous
3. 1,062 views
How long can we use a bottle containing anti-bumping granules?Can it be used indefinitely?
1. 2 answers
2. asked by anne
3. 1,049 views
sinx(ccscx-sinx=cos^x
1. 1 answer
2. asked by Anonymous
3. 1,040 views
a construction worker accidentally knocks a brick from a building so that it falls in 4s to the ground.calculatea) the velocity
1. 1 answer
2. asked by shiva
3. 1,035 views
secx/sinx-sinx/cosx=cotx
1. 1 answer
2. asked by Anonymous
3. 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
1. 2 answers
2. asked by Katie
3. 1,015 views
sinx/1-cosx+1-cosx/sinx=2cscx
1. 0 answers
2. asked by Anonymous
3. 1,003 views
A solution of household bleach contains 5.25% sodium hypochlorite, NaOCl, by mass. Assuming that the density of bleach is the
1. 0 answers
2. asked by Jematormal91
3. 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. 1 answer
2. asked by lola
3. 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. 1 answer
2. asked by rick
3. 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
1. 0 answers
2. asked by Ron
3. 972 views
how long will it take to earn $568.75 in interest if $2500 is invested at a 6.5% annual interest rate
1. 2 answers
2. asked by tatiana
3. 966 views
A triathlete swims 1200 m due to east followed by 1500 m due northeast (45o). What is the overall displacement? (magnitude and
1. 2 answers
2. asked by Melissa
3. 965 views
Find the power input of a forceF=(7 N)ˆý + (3 N) ˆk acting on a particle that moves with a velocity v = (6 m/s)ˆý. Answer
1. 1 answer
2. asked by Ashley
3. 951 views
Can anyone explain this following quote:"Freedom is a right to one's dignity as a man" --Archibald MacLeish
1. 2 answers
2. asked by Ahamed
3. 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. 1 answer
2. asked by Chase
3. 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
1. 2 answers
2. asked by Alicia
3. 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
1. 2 answers
2. asked by Jake
3. 910 views
i need a molecular, ionic and net ionic equation for this :K_3 PO_4 + BaCl_2
1. 1 answer
2. asked by jhong
3. 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
1. 2 answers
2. asked by Sam
3. 895 views
Find the power of a forceF= (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. 1 answer
2. asked by Ashley
3. 888 views
When px^3 – 2px^2 + 3x – p is divided by (x – 1), the remainder is -5. Find p.
1. 1 answer
2. asked by rick
3. 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
1. 0 answers
2. asked by ms
3. 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
1. 2 answers
2. asked by Neil
3. 798 views
Camera lenses are described in terms of theirfocal length. A 50 mm lens has a focal length of 50 mm. A camera is focused on an
1. 1 answer
2. asked by amanda and leah
3. 793 views
The Energy from glucose is obtained from the oxidation reactionC6H12O6 + 6O2 --> 6CO2 + 6H2O How would a similar reaction look
1. 1 answer
2. asked by James
3. 783 views
Locate indiana state’s constitution and examine the major elements and articles of the constitution. Review its contents and
1. 2 answers
2. asked by jamie
3. 779 views
solve for x given that (1/8)^12x =2^x+3
1. 1 answer
2. asked by mazuba
3. 775 views
Solid ammonium nitrate can decompose to dinitrogen oxide gas and liquid water. What is delta G at 298K?
1. 2 answers
2. asked by Emily
3. 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. 1 answer
2. asked by Jessie
3. 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,
1. 2 answers
2. asked by Adam
3. 758 views
cotxsinx=cosx
1. 1 answer
2. asked by olivia
3. 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
1. 5 answers
2. asked by Taylor
3. 757 views
3x-5y=24 3x+5y=6
1. 1 answer
2. asked by Jenni
3. 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
1. 2 answers
2. asked by ericka
3. 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. 1 answer
2. asked by Max
3. 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. 1 answer
2. asked by Meenaakshi
3. 713 views
hello i'm doing a redox stoichiometry lab having to do with titration6H +5H2O2 + 2MnO4 -- 5O2 + 2Mn2+ + 8H2O Why is H2O2 the
1. 1 answer
2. asked by Jo
3. 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
1. 2 answers
2. asked by Becky
3. 700 views
2) A car traveling with 5 m/s encounters a deer. The drivers slams on the breaks, the breaks lock. The carskids to a complete
1. 1 answer
2. asked by Mary
3. 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. 1 answer
2. asked by LISA
3. 692 views
in 10-15 lines critically discuss five ways in which the human or environmental impact causes within any community in South
1. 16 answers
2. asked by Anonymous
3. 687 views
CAUSE AND EFFECTA CAUSE TELLS WHY SOMETHING HAPPENED. AN EFFECT IS WHAT HAPPENED. WORDS SUCH AS BECAUSE AND SO ARE CLUES THAT
1. 3 answers
2. asked by dw
3. 687 views
Thesis statment :The physiology of alcohol dependence causes physiological aspects of the obstetric and the effect of alcohol
1. 1 answer
2. asked by Denise
3. 686 views
My third piece.Draft an email of at least four complete sentences to Deb Walker, the designated trainer: A. Confirm the
1. 2 answers
2. asked by Shawna
3. 682 views
the circle is given by the equation x^2+y^2+8x-7/2y=0find (i)coordinates of the centre and the radius (ii)coordinates of the
1. 1 answer
2. asked by mwaba
3. 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. 1 answer
2. asked by geeh mommah
3. 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. 1 answer
2. asked by MCBOBO
3. 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. 1 answer
2. asked by tatiana
3. 657 views
How did the acceptance of Christianity change life in the Roman empire?
1. 3 answers
2. asked by Cicilia
3. 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. 1 answer
2. asked by Katie
3. 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
1. 3 answers
2. asked by Kevin
3. 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. 1 answer
2. asked by Tyshae
3. 633 views
how did portrait painting change from the 1500s to the 1600s
1. 1 answer
2. asked by ryna
3. 624 views
A fully sealed 50m^3 room at atmospheric pressure and temperature 20C contains two ballons, one containing helium and the other
1. 0 answers
2. asked by Chem123
3. 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. 1 answer
2. asked by Jake
3. 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. 1 answer
2. asked by Dan
3. 610 views

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