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Questions Asked on March 26, 2011

What mass of octane must be burned in order to liberate 5510 kJ of heat? ΔHcomb = -5471 kJ/mol.
1. 2 answers
2. asked by nicole
3. 4,053 views
A gas is confined to a container with a massless piston at the top. (Part C figure) A massless wire is attached to the piston.
1. 4 answers
2. asked by Lina
3. 3,744 views
Ammonium sulfate can be made by the reaction H2SO4 + 2 NH3 ® (NH4)2SO4. What quantity of ammonium sulfate will result from the
1. 3 answers
2. asked by Anonymous
3. 3,319 views
Theorem: For every integer n, if x and y are positive integers with max(x, y) = n, then x = y.Basic Step: Suppose that n = 1. If
1. 12 answers
2. asked by Francesca
3. 2,173 views
Water is flowing in a pipe as depicted in the figure. As shown, p = 117 kPa, d = 4.67 cm, d' = 3.06 cm, v = 4.36 m/s, and h =
1. 1 answer
2. asked by please help me
3. 2,149 views
to what volume should you dilute 0.100 L of a 15M NaOH solution to obtain a 1.0 M NaOH solution?
1. 2 answers
2. asked by eugene
3. 2,038 views
You shoot a 51-g pebble straight up with a catapult whose spring constant is 320N/m. The catapult is initially stretched by
1. 1 answer
2. asked by Work needed!
3. 1,987 views
The length of a spring increases by 7.2 cm from its relaxed length when a mass of 1.4 kg is hanging in equilibrium from the
1. 2 answers
2. asked by Work needed!
3. 1,984 views
What is the vertical asymptote of the graph of y=log4(x-3) ?
1. 2 answers
2. asked by Diamond
3. 1,883 views
Bruce stands on a bank beside a pond, grasps the end of a 20.0-m-long rope attatched to a nearby tree and swings out to drop
1. 2 answers
2. asked by Work needed!
3. 1,863 views
What can a teacher do to reinforce the primary relationship between the parent and the child and to communicate that the teacher
1. 1 answer
2. asked by Toro
3. 1,805 views
1. Ca(OH)2 + H3PO4 ---> H2O + Ca3(PO4)2(A) How many moles of H3PO4 are needed to make 15g of H2O? (B) What mass in grams of
1. 1 answer
2. asked by Sulon
3. 1,693 views
1. The reaction of fluorine with ammonia produces dinitrogen tetrafluoride and hydrofluoric acid.F2(g) + NH3(g) „³ N2F4(g) +
1. 1 answer
2. asked by Sulon
3. 1,639 views
1. Ca(OH)2(aq) + H3PO4(aq) à Ca3(PO4)2(aq) + H2O(l)a. If you have 13.7mol of Ca(OH)2, how many grams of H2O are produced? b.
1. 3 answers
2. asked by Sulon
3. 1,473 views
A block of wood is compressed 2.0 nm when inward forces of magnitude 120N are applied to it on two opposite sides. (a) Assuming
1. 1 answer
2. asked by Work needed!
3. 1,356 views
Direct verse indirect cost Estep Construction Company is composed of two divisions: (1) Home Construction and (2) Commercial
1. 2 answers
2. asked by richard
3. 1,355 views
What are the components of aggregate expenditure? In the model developed in this chapter, which components vary with changes in
1. 0 answers
2. asked by kwame kinker
3. 1,318 views
A motorist driving a 1200-kg car on level ground accelerates from 20.0 m/s to 30.0 m/s in a time of 5.0s. Neglecting friction
1. 1 answer
2. asked by Work needed!
3. 1,307 views
how do you find ...weekly sales in thousands of items of a product has a seasonal sales record approximated by
1. 1 answer
2. asked by kellie
3. 1,297 views
Two charges, -2.0 micro C and -6.0 micro C, are located at (-0.65 m, 0) and (0.65 m, 0), respectively. There is a point on the
1. 1 answer
2. asked by Ben
3. 1,242 views
Describe how the verb argument structure(VAC)subject+verb++lo… is learned by a second language learner?why or how based on
1. 1 answer
2. asked by Monique
3. 1,209 views
Larry borrowed $12,000 from his grandfather to buy a car. He bought a used car, so, he returned $4,411 to his grandfather. Write
1. 5 answers
2. asked by googoo
3. 1,203 views
(a) Calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 8.0 g. Silver has 47
1. 1 answer
2. asked by Rachel
3. 1,190 views
A saturated solution of Mg(OH)2 is prepared having a large excess of Mg(OH)2. Sn(NO3)2 is added to the solution. Ksp = 1.9 x
1. 2 answers
2. asked by Nikki
3. 1,186 views
The turbine and associated rotating parts of a jet engine have a total moment of inertia of 23 kg m2. The turbine is accelerated
1. 1 answer
2. asked by HELP!!!!
3. 1,156 views
Sleeping pills often contain barbital, which is weakly acidic (pKa = 8.00). For analysis of the barbital content of a sleeping
1. 1 answer
2. asked by help
3. 1,110 views
If each angle of a regular polygon measures 140 degrees, how many sides does it have?
1. 2 answers
2. asked by Valerie
3. 1,103 views
Ruth makes a scale drawing of her room. She uses the scale 3/2 in : 1 ft. In the drawing, the dimensions of her room are 18 in
1. 1 answer
2. asked by Anonymous
3. 1,086 views
Specifically, which of the following best expresses your view:i. Many physics concepts make a lot of sense and connect to
1. 0 answers
2. asked by Tammy
3. 1,076 views
find an exponential function of the form P(t)yoe^kt to model the given;In 1995, the number of female athletes participating in
1. 1 answer
2. asked by anonymous
3. 1,063 views
The amount of heat released when 100 grams of steam at 100 degrees Celsiusis converted into liquid water at 100 degrees Celsius
1. 0 answers
2. asked by bode
3. 1,050 views
If $20,000 is invested in a savings account offering 3.5% per year, compounded continuously, how fast is the balance growing
1. 1 answer
2. asked by LA
3. 1,005 views
1 the mystery shape has at least 2 lines of symmetry2 at least 1 of its diagonals is also a line of symmetry 3 it has has at
1. 9 answers
2. asked by Rayna
3. 991 views
A company has operating costs of $2000 per thousand items produced. Its revenue function can be modeled by the equation:
1. 0 answers
2. asked by Adriana
3. 953 views
A ball is thrown upward with an initial velocity of 96 feet per second from the top of a 100 foot building. (a) When well the
1. 1 answer
2. asked by Anonymous
3. 945 views
If Michelle devotes all her resources to growing potatoes, she can raise 200 pounds of potatoes per year. If she devotes all her
1. 3 answers
2. asked by Denise
3. 945 views
The following RAM chips are specified by the number of words times the number of bits per word. For each, specify:a. The number
1. 2 answers
2. asked by bode
3. 945 views
A researcher asks whether attending a private high school leads to higher or lower performance on a test of social skills when
1. 3 answers
2. asked by Beverly
3. 925 views
How do i get the answerA steel ball of diameter Lb = 4.196 cm is placed on a hole of diameter Lh = 4.042 cm on an aluminium
1. 1 answer
2. asked by Steve
3. 915 views
how do you write 26th march 2011 in 5 letters without using number?
1. 3 answers
2. asked by maharaj
3. 908 views
1.30 grams of chromium reacts with 9.5 grams of iodine. What is the percent of chromium in this compound? How do I work out this
1. 1 answer
2. asked by Quick chem question
3. 870 views
help solving the equation .8x+2 less than or equal 62-1
1. 1 answer
2. asked by sarah
3. 864 views
ABC Mining is evaluating the introduction of a new ore production process. Two alter¬natives are available. Production Process
1. 5 answers
2. asked by Sara
3. 864 views
A spring with k=40.0 N/m is at the base of a frictionless 30.0 degree inclined plane. A 0.50-kg object is pressed against the
1. 2 answers
2. asked by Work needed!
3. 860 views
A wave of amplitude 0.30m interferes with a second wave of amplitude 0.20m traveling in the same direction. What are (a) the
1. 0 answers
2. asked by Anthony
3. 848 views
how do you find the integral on a ti 83 calculator?
1. 1 answer
2. asked by lois
3. 813 views
If sound in air with wavelength 1.7 m enters a body of water, what would its wavelength be in water?
1. 0 answers
2. asked by Rico
3. 807 views
Please let me know if I am right on these.Mystery #1. 1. The mystery shape has fewer than 3 lines of symmetry. 2. It has at
1. 5 answers
2. asked by Rayna
3. 803 views
According to conservation of momentum, when two objects collide, the momentum lost by one object equals the momentum gained by
1. 0 answers
2. asked by Tammy
3. 799 views
Short story about African politician and underline the topic sentence.
1. 1 answer
2. asked by Salifu A. Rahman
3. 787 views
Can you please help me with this question.1.Select the correct form for the verb escribir: He doubted the prince wrote stories
1. 1 answer
2. asked by anon
3. 784 views
A brick of mass 1.0 kg slides down an icy roof inclined at 30.0 degrees with respect to the horizontal. (a) If the brick starts
1. 0 answers
2. asked by Anonymous
3. 768 views
Here's a question I'm having trouble with:|x|/|x+2|<2 Solve for x. I'm trying to use the case method to solve this problem.
1. 3 answers
2. asked by Randy
3. 766 views
A .50kg ball is rolling on a frictionless surface at a speed of .75m/s. it collides with a second ball with a mass of 1kg which
1. 1 answer
2. asked by Mari
3. 763 views
A gas is confined to a container with a massless piston at the top. (Part C figure) A massless wire is attached to the piston.
1. 1 answer
2. asked by Lina
3. 761 views
A top fuel drag racer with a mass of 500.0 kg completes a quarter-mile (402m) drag race in a time of 4.2s starting from rest.
1. 1 answer
2. asked by Work needed!
3. 755 views
Hello everyone!!For these six sentences, I have to explain what determines whether the sentence is grammatical or not 1) Both
1. 2 answers
2. asked by Bobby
3. 754 views
The denominator of a fraction is 4 more than the numerator. If both the denominator and the numerator are increased by 1, the
1. 2 answers
2. asked by Dylan
3. 753 views
I'm totally confused and this is due Monday-We're dealing with electrical circuits and I have to construct a circuit with
1. 5 answers
2. asked by Aubrey
3. 749 views
How many ways can 5 people be arranged in a straight line if there are 12 people to choose from
1. 4 answers
2. asked by Valerie
3. 741 views
Water is flowing in a pipe as depicted in the figure. As shown, p = 117 kPa, d = 4.67 cm, d' = 3.06 cm, v = 4.36 m/s, and h =
1. 1 answer
2. asked by Jeantel
3. 739 views
So I have to an expression as the logarithm of a single number or expression with a coefficient of 19log w+ 4log z- log(x-5) my
1. 2 answers
2. asked by anonymous
3. 737 views
I am writing an Argumentative research paper but I am not sure how I will create a topic sentence for the opposion position
1. 4 answers
2. asked by John
3. 730 views
As a star ages, its internal composition changes as nuclear reactions in the star's core convert one element into another. True
1. 1 answer
2. asked by Christina
3. 726 views
I think I fixed everything.Technology, Technology, that's all we use to communicate today. There's Facebook, Twitter, Myspace,
1. 1 answer
2. asked by Raven
3. 718 views
A swimming pool, 20.0 m 12.5 m, is filled with water to a depth of 3.73 m. If the initial temperature of the water is 17.7°C,
1. 1 answer
2. asked by nicole
3. 710 views
Two converging lenses with focal lengths 5 cm and 30 cm are placed 35 cm apart. Rays from a very distant object are impinged on
1. 1 answer
2. asked by Abby
3. 708 views
Content and Development170 Points Points Earned XX/170 Additional Comments: The student covers all key elements of the
1. 1 answer
2. asked by Amanda
3. 700 views
I'm trying to understand the meaning of Tom Dent's poem "secret messages" (for Danny Barker). What is he trying to say? I'm
1. 1 answer
2. asked by redgy
3. 699 views
A contractor is considering a sale that promises a profit of $30,000 with a probability of .7 or a loss of $4,000 with a
1. 1 answer
2. asked by Valerie
3. 682 views
In how many ways can 7 people line up for plane tickets?
1. 4 answers
2. asked by Valerie
3. 667 views
Okay, so I'm trying to get a job at this grocery store. And I have some questions which I don't get how to answer.Here is an
1. 3 answers
2. asked by Sydney
3. 665 views
ABC is an isoscele triangle in which [AB]=[AC]=5cm and [BC]=6cm. Calculate [AM], where M is the mid-point of BC.
1. 6 answers
2. asked by ezendu
3. 664 views
I need to write an essay using the second amendment controversy with gun control as proof that the Bill of Rights is at an
1. 2 answers
2. asked by Bill
3. 639 views
The figure shows a bicycle wheel resting against a small step whose height is h = 0.110 m. The weight and radius of the wheel
1. 0 answers
2. asked by Alicia
3. 636 views
Which organ sterilizes ingested food
1. 3 answers
2. asked by kathi
3. 633 views
A 5m long fishing boat is anchored on a windy day. The skipper notices that as one wave crest is leaving the stern another is
1. 1 answer
2. asked by Rico
3. 609 views
how do you use pascals triangle in everyday life or nature?
1. 1 answer
2. asked by kaykay
3. 606 views
A demonstration gyroscope consists of a uniform disk with a 37-cm radius, mounted at the midpoint of a light 61-cm axle. The
1. 0 answers
2. asked by zack
3. 604 views
In Great Expectations, Pip is talking to the 'mysterious sailor' that is at his house. He asks the man "What floor do you want?"
1. 1 answer
2. asked by Cecilia
3. 600 views
What is the most dramatic metabolic change that occurs with fasting?
1. 2 answers
2. asked by lisa
3. 599 views
Describe what contrastive analysis is and what transfer is(both positive transfer and negative transfer)?
1. 1 answer
2. asked by Monique
3. 599 views
Suppose you took 1000 random samples of size 200 from the Poisson distributionwith u = 5 and computed a 90% confidence interval
1. 0 answers
2. asked by Adam HELP PLEASEEE
3. 581 views
Describe how the verb argument structure(VAC)subject+verb++lo… is learned by a second language learner?why or how based on
1. 1 answer
2. asked by Monique
3. 576 views
Erik Johnson has just become a heir to $15 000. He's 23 years old, and hes graduated frm university business program. He works
1. 3 answers
2. asked by emma
3. 575 views
Give two different kinds of specific examples of transfer from an L1 to and L2?A particular grammar construction, a particular
1. 1 answer
2. asked by Monique
3. 573 views
Suppose you buy 1 ticket for $1 out of a lottery of 3,000 tickets. If the prize for the one winning ticket is to be $1,000, what
1. 1 answer
2. asked by Valerie
3. 570 views
determine domain, intercepts, asymptotes, intervals of increase and decrease, and concavity, and to locate any local extrema and
1. 1 answer
2. asked by Anonymous
3. 568 views
You are the technical consultant for an action-adventure film in which a stunt calls for the hero to drop off a 18-m-tall
1. 0 answers
2. asked by Really stuck in this problem !!
3. 553 views
An aluminum nucleus has 13 protons and 14 neutrons. A copper nucleus has 29 protons and 34 neutrons. What is the force of
1. 1 answer
2. asked by Avery
3. 552 views
sa traders who use the perpetual inventory system, purchased merchandise on the 1 feb 2011 form africa limited for 500. the
1. 2 answers
2. asked by Anonymous
3. 550 views
To prepare the titrant fo amonia nitrogen analysis an analyst weight out 1.20 grams of concentration 98% sulfuric acid and
1. 1 answer
2. asked by Faye
3. 549 views
What are the formulas for the following:Volume ratio Area ratio Perimeter ratio Angle outside the Circle Angle inside the Circle
1. 0 answers
2. asked by Anonymous
3. 549 views
A 27-kg boy stands 4 m from the center of a frictionless playground merry-go-round, which has a moment of inertia of 238 kg m2.
1. 0 answers
2. asked by Nick
3. 546 views
A bar made of a particular metallic alloy has a length of 10 cm at a temperature of 24 oC and a length of 10.015 cm at the
1. 1 answer
2. asked by sam
3. 535 views
0.1M solution of methanoic acid is found to have a ph of 2.4 at 25 degree celcius. Calculate the dissociation constant k at this
1. 1 answer
2. asked by Olamide
3. 531 views
You are on the Moon and would like to send a probe into space so that it does not fall back to the surface of the Moon. What
1. 2 answers
2. asked by Work needed!
3. 530 views
Can you please check if everything is correct? I included two paragraphs on the history of Ireland. Thank you.1) The rebels
1. 2 answers
2. asked by Mike
3. 521 views
The 235-kg cart in the figure starts from rest and rolls with negligible friction. It is pulled by three ropes as shown. It
1. 1 answer
2. asked by ashyLerry
3. 518 views
Suppose that two people, Michelle and James each live alone in an isolated region. They each have the same resources available,
1. 0 answers
2. asked by Denise
3. 515 views

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