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2012
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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. 13,386 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. 7,135 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. 6,113 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. 6,028 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. 5,325 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. 4,756 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. 4,135 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. 3,715 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. 3,343 views
QUADRILATERAL ABCD IS A RECTRANGLEIF AC=2X+13 AND DB=4X-1 FIND DB
1. 3 answers
2. asked by TJ
3. 2,280 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. 2,152 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. 2,141 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. 2,064 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. 2,014 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. 1,994 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. 1,804 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. 1,779 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. 1,749 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. 1,726 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. 1,617 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. 1,555 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. 1,518 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. 1,477 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. 1,445 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. 1,444 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. 1,393 views
Can you label all the functional groups of the Sucrose Molecule?
1. 2 answers
2. asked by Anne
3. 1,352 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. 1,285 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. 1,275 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. 1,268 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. 1,260 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. 1,243 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. 1,236 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. 1,137 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. 1,121 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. 1,104 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. 1,097 views
Use the substitution method to solve-x + 3y=24 5x +8y=-5
1. 2 answers
2. asked by Jake
3. 1,093 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. 1,078 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. 1,074 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. 1,072 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. 1,062 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. 1,052 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. 1,027 views
sinx(ccscx-sinx=cos^x
1. 1 answer
2. asked by Anonymous
3. 1,022 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. 1,022 views
secx/sinx-sinx/cosx=cotx
1. 1 answer
2. asked by Anonymous
3. 1,003 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. 1,001 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. 982 views
sinx/1-cosx+1-cosx/sinx=2cscx
1. 0 answers
2. asked by Anonymous
3. 980 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. 949 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. 944 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. 938 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. 931 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. 927 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. 924 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. 922 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. 908 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. 900 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. 897 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. 886 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. 874 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. 868 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. 864 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. 833 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. 767 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. 765 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. 755 views
solve for x given that (1/8)^12x =2^x+3
1. 1 answer
2. asked by mazuba
3. 745 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. 744 views
cotxsinx=cosx
1. 1 answer
2. asked by olivia
3. 739 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. 735 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. 735 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. 733 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. 721 views
3x-5y=24 3x+5y=6
1. 1 answer
2. asked by Jenni
3. 721 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. 721 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. 711 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. 702 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. 676 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. 662 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. 657 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. 652 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. 652 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. 650 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. 646 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. 641 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. 639 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. 632 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. 630 views
How did the acceptance of Christianity change life in the Roman empire?
1. 3 answers
2. asked by Cicilia
3. 625 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. 619 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. 615 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. 613 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. 612 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. 607 views
how did portrait painting change from the 1500s to the 1600s
1. 1 answer
2. asked by ryna
3. 595 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. 587 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. 575 views
calculate the pH of 0.25 M formic acid and 0.40 M sodium formate
1. 1 answer
2. asked by brooke
3. 575 views

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