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2011
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Questions Asked on March 15, 2011

The heat of combustion of propane is -2,220.1 kJ/molcalculate the heat of formation, delta Hf, of propane given that delta Hf of
1. 3 answers
2. asked by Anonymous
3. 4,740 views
I need help with a few questions. Could you let me know if I'm going in the right direction.1- CHAMPVA would be considered a
1. 3 answers
2. asked by BB
3. 639 views
My 1st grade son needs to write a paragraph but is having a very hard time grasping the concept. How can I help him with this?
1. 1 answer
2. asked by Jennifer
3. 1,113 views
The quotient of a number and -2\3 is -9\10.What is the number?
1. 1 answer
2. asked by giana
3. 808 views
A kite has diagonals of 16 inches and 23 inches as seen below. What is the perimeter of the kite?
1. 0 answers
2. asked by Devon
3. 434 views
A circular swimming pool is 4 feet deep and has a diameter of 15 feet. If it takes 7.5 gallons of water to fill one cubic foot,
1. 1 answer
2. asked by Anonymous
3. 703 views
A football field, including the end zones, is 360 feet long and 160 feet wide. How many square yards of artificial grass would
1. 1 answer
2. asked by Anonymous
3. 2,084 views
A picnic cooler is shaped like a rectangular prism. The dimensions inside are 36 inches by 12 inches by 15 inches. In cubic
1. 1 answer
2. asked by Anonymous
3. 608 views
The inside edge of a racing track is shaped like a circle with a diameter of 420 feet. About how many times would a runner have
1. 1 answer
2. asked by Anonymous
3. 426 views
A developer buys a tract of land 0.5 mile long and 0.25 mile wide. Is this enough land to lay out a 75-acre golf course if there
1. 1 answer
2. asked by Anonymous
3. 913 views
Please check my answers:How are the symbols 3/4, 0.75, and 75% related? They are all different ways to express the same number.
1. 0 answers
2. asked by Anonymous
3. 442 views
did I solve the problem correctly?c=$200+$50h c=$300+$25h is the answer c=$250 c=$325 Do all I have to do to this equation is to
1. 1 answer
2. asked by Sylvia
3. 462 views
You are the chief executive officer of Money Games Inc.(MGI), which has begun to market Borrow & Spend, a video game set in the
1. 2 answers
2. asked by Liz Marie Santana
3. 465 views
A mass of 2kg was thrown straight up with a speed of 15m/s. (a) find the initial KE (b) how high does the mass rise? (c) what is
1. 0 answers
2. asked by Madi
3. 428 views
From a tree that is 15m tall, a fruit of mass 2kg falls to the ground. (a) find the initial GPE (b) find the speed at impact (c)
1. 0 answers
2. asked by Madi
3. 950 views
A mass was dropped from a height of 20m. (a) find its speed at impact. (b) what can you say about the initial GPE of the mass
1. 0 answers
2. asked by Madi
3. 498 views
What mass of silver chloride can be prepared by the reaction of 160.0 mL of 0.10 M silver nitrate with 120.0 mL of 0.19 M
1. 0 answers
2. asked by Rachel
3. 621 views
Having mathematical standards in grades K-12 will give students clear and realistic expectations of what they are expected to
1. 1 answer
2. asked by Anonymous
3. 414 views
0076791. A staple food transplanted from Southeast Asia to the Mediterranean world as a result of the Islamic Empire was A.
1. 5 answers
2. asked by Atty
3. 674 views
give that z = f(x,y). use partial derivatives to find δz/δx and δz/δy forxe^xz + z(xy+1)^3-sin x cos^2y=xy/z present your
1. 0 answers
2. asked by waklu
3. 944 views
a scooter goes from a velocity of 6.9 m/s to a velocity of 4.8 m/s in a time of 5.1 seconds. what is the acceleration of the
1. 0 answers
2. asked by nick
3. 853 views
Which indicator can be used to detect the endpoint of a species that has Ka=1.1 x 10E-8?I used phenolphtalein? is that correct?
1. 0 answers
2. asked by Mike
3. 300 views
What are some suggestions teachers can give to parents so that they might assist their children with unfamiliar math concepts?
1. 0 answers
2. asked by Anonymous
3. 394 views
I have a couple of questions that need review--I've answered them, but I'm not sure if I'm correct.1.)Suppose you interview 10
1. 1 answer
2. asked by Anonymous
3. 815 views
In a long jump, an athlete leaves the ground with an initial angular momentum that tends to rotate his body forward, threatening
1. 1 answer
2. asked by jr
3. 1,017 views
Two questions that I'm unsure of are below:1). The variability of a statistic is described by: a) the spread of its sampling
1. 1 answer
2. asked by Anonymous
3. 1,010 views
How many products are in the windows xp family?
1. 0 answers
2. asked by john
3. 301 views
When sodium forms an ion, will it form a cation or anion?
1. 0 answers
2. asked by Donnie
3. 903 views
Azomethane, CH3NNCH3, is not a stable compound, and once generated, it decomposes. The rate of decomposition was measured by
1. 0 answers
2. asked by Jazmin
3. 573 views
The reaction of CO(g) + NO(g) is second-order in NO2 and zero-order in CO at temperatures less than 500K.(a) Write the rate law
1. 2 answers
2. asked by Maria
3. 2,263 views
40. A Luisa y a Mario _________ las películas de ciencia ficción.a. les fascinaron b. me fascinan c. te fascinaron d. nos
1. 4 answers
2. asked by mysterychicken
3. 662 views
Could you please check these sentences and tell me if they make sense.Write five sentences in which you address changes in your
1. 4 answers
2. asked by Debbie
3. 1,106 views
What reagent converts sodiumethanoate to methane?
1. 0 answers
2. asked by Anonymous
3. 353 views
What reagent converts sodiumethanoate to methane?
1. 0 answers
2. asked by Dan
3. 918 views
You have 100yds. of fencing to enclose a rectangular area. Find the dimensions which maximize the area. What is the maximum
1. 1 answer
2. asked by Brooklyn
3. 744 views
Helen stands 66 m away from the base of the tree. If the line of sight makes an angle of 30 with the top of the tree with
1. 2 answers
2. asked by Valentine
3. 580 views
what can you say about the forces on a brick lying still on the floor?
1. 1 answer
2. asked by alilil
3. 292 views
I am writing a paper on the novella Aura by Carlos Fuentes and so far I have a few paragraphs. I was just wondering if I were to
1. 3 answers
2. asked by Hannah
3. 1,390 views
What fossil fuel is pumped through underground pipes and what is the name of the energy resource from underground that turns to
1. 1 answer
2. asked by Dr. House
3. 467 views
Ottawa’s anaerobic digester produces 13 m^3/day of sludge with a suspended solids concentration of 7.8%. What volume of sludge
1. 0 answers
2. asked by Massiel
3. 659 views
10 cm^3 of normal specimen of human blood contain 1.2g of hemoglobin. How many grams does 40cm^3 of same blood contain?Thank
1. 1 answer
2. asked by Esther
3. 600 views
If the BOD5 of a waste is 220 mg/L and the ultimate BOD is 320 mg/L, whatis the rate constant?
1. 1 answer
2. asked by Massiel
3. 1,083 views
What is the name of the energy form that can damage buildings if too much of it is present? and What is the name of a form of
1. 1 answer
2. asked by Capone
3. 395 views
Helen stands 66 m away from the base of the tree. If the line of sight makes an angle of 30 with the top of the tree with
1. 1 answer
2. asked by Valentine
3. 1,011 views
Which is the most effective coordinating conjuction to join the following independent clause?Miriam wants a digital picture
1. 2 answers
2. asked by elexis
3. 537 views
what are the products of electrolysis of the following solutions?A. potassium iodide B. nickel sulphate C. magnesium chloride
1. 4 answers
2. asked by Anonymous
3. 532 views
SO3 + H2O = H2SO4If you react 34 g of water and have excess SO3, how much H2SO4 would you theoretically produce
1. 2 answers
2. asked by Chrissy
3. 614 views
a leisure centre recordsthe number of visitors each week in one particular week there were 1372 visitorosthe following week the
1. 10 answers
2. asked by chloe
3. 449 views
SO3 + H2O = H2SO4If you react 34 g of water and have excess SO3, how much H2SO4 would you theoretically produce?
1. 1 answer
2. asked by Anonymous
3. 512 views
Can someone please help me?The brakes of a truck cause it to slow down by applying a retarding force of 2.60 103 N to the truck
1. 1 answer
2. asked by Phil
3. 1,095 views
Hat sizes are determined by measuring the circumference of one's head in either inches or centimeters. Use ratio and Proportion
1. 1 answer
2. asked by Esther
3. 531 views
sodium is manufactured commercially by electrolysis of molten sodium chloride. explain why it is not possible to use sodium
1. 2 answers
2. asked by Anonymous
3. 571 views
A grander want to create a triangular garden in the shape of a right triangle with shortest side length x-6y ft. and the middle
1. 3 answers
2. asked by Miguel
3. 576 views
a) Aluminum Chloride has a universal indicator color of red and the Ph of 4.0b) Sodium Carbonate has a universal indicator color
1. 0 answers
2. asked by samuel
3. 545 views
sodium is manufactured commercially by electrolysis of molten sodium chloride. explain why it is not possible to use sodium
1. 1 answer
2. asked by Anonymous
3. 576 views
A hot-air balloon is 180 ft above the ground when a motorcycle passes directly beneath it (travelling in a straight line on a
1. 2 answers
2. asked by Jake
3. 3,350 views
what is the circumferencethe radius the arc the chord the diameter
1. 3 answers
2. asked by jake
3. 795 views
A certain voltaic cell has a standard cell voltage of 1.22 V, and 3 electrons are transferred in the overall cell reaction.What
1. 1 answer
2. asked by will
3. 645 views
whta are the products of electrolysis of the following solutions?potassium iodide nickel sulphate and magnesium chloride
1. 0 answers
2. asked by Anonymous
3. 466 views
which one of these numbers9,15,25,45,50,64,100,125,175 has a cube root of 5
1. 1 answer
2. asked by sara
3. 320 views
I just want to get someone's opinion on a question that was on my son's reading test. He's in first grade.Which word has the
1. 5 answers
2. asked by Tracy
3. 449 views
The results of the 1912 election prove that Americans were ready for change and reform across the board. Each candidate offered
1. 1 answer
2. asked by David
3. 555 views
The area of the top of a triangular corner desk must be at least 7 sq. ft. If the base of the triangular desk top needs to be
1. 1 answer
2. asked by Amy
3. 434 views
A hot-air balloon is 180 ft above the ground when a motorcycle passes directly beneath it (travelling in a straight line on a
1. 1 answer
2. asked by Jake
3. 947 views
Find dy/dx in terms of x and y if xlny+y^6= (9)lnx
1. 3 answers
2. asked by Catherine
3. 1,675 views
Engineers are trying to create artificial "gravity" in a ringshaped space station by spinning it like a centrifuge. The ring is
1. 1 answer
2. asked by olga
3. 1,162 views
When you put water in a kitchen blender, it begins to travel in a 7-cm-radius circle at a speed of 1 m/s. How quickly is the
1. 1 answer
2. asked by olga
3. 1,494 views
Find dy/dx in terms of x and y if (x−a)^9+y^9=a^9. Assume that a is a constant
1. 1 answer
2. asked by Cesar
3. 540 views
11. A key technological development that began around 500 B.C.E. in sub-Saharan Africa was
1. 2 answers
2. asked by Anonymous
3. 892 views
A right square pyramid’s base has edges measuring 20 feet each. Ifthe pyramid’s height is 27 feet, what is its volume, in
1. 1 answer
2. asked by K
3. 1,574 views
A thundercloud has an electric charge of 43.2 C near the top of the cloud and -38.7 C near the bottom of the cloud. The
1. 4 answers
2. asked by ELIZA
3. 2,393 views
Are binary compounds ionic or covalent? If they are covalent? If they are covalent, I thought they don't form bonds that way,
1. 1 answer
2. asked by Emily
3. 545 views
Are binary compounds ionic or covalent? If they are covalent, I thought they don't form bonds that way, since they share
1. 1 answer
2. asked by Emily
3. 709 views
The surface area of a particular cube is 600 square inches. When theedges of the cube are doubled in length, what is the volume
1. 3 answers
2. asked by ABC123DoReMi
3. 1,894 views
A sample of O2(g) is saturated with water vapor at 27 C. The total pressure of the mixture is 772 torr, and the vapor pressure
1. 2 answers
2. asked by naseeb
3. 3,709 views
School-age children generally develop writing skills in which sequence?A.Expressive writing,expository writing,story B.Exposity
1. 1 answer
2. asked by kim
3. 2,686 views
A small plane tows a glider at constant speed and altitude.If the plane does 2.00X10^5 J of work to tow the glider 165 m and the
1. 2 answers
2. asked by Alan
3. 2,758 views
The four tires of an automobile are inflated to a gauge pressure of 1.84E+5 Pa. Each tire has an area of 0.0237 m2 in contact
1. 1 answer
2. asked by Megan
3. 1,030 views
Explain why the addition method might be preferred over the substitution method for solving the system2x-3y=5 5x+2y=6
1. 2 answers
2. asked by Amy L
3. 1,616 views
When solving a system of equations by the addition method, how do you know when the system has no solution?
1. 1 answer
2. asked by Amy L
3. 569 views
A) If x^2+y^3−xy^2=5, find dy/dx in terms of x and y.dy/dx=________ B) Using your answer for dy/dx, fill in the following
1. 3 answers
2. asked by Catherine
3. 1,363 views
Piston 1 has a diameter of 0.524cm Piston 2 has a diameter of 5.64 cm. In the absence of friction, determine the force required
1. 4 answers
2. asked by Megan
3. 584 views
If x+y=-10 and x-y=2, what is that value of x?
1. 2 answers
2. asked by Rosie
3. 332 views
If a race car travels a circular track, total 1 mile. What is its displacement?
1. 3 answers
2. asked by Alex
3. 486 views
At t= 1.0s, a 0.61 kg object is falling with a speed of 6.0 m/s. At t= 2.0s, it has a kinetic energy of 25 J.1. What is the
1. 3 answers
2. asked by Alan
3. 786 views
a .1kg particle with velocity of 5m/s comes in to contact with a solid cylinder at rest of mass 1kg and radius .2meters. what is
1. 0 answers
2. asked by stephen
3. 438 views
Write a 150–200 word paragraph about the most helpful information you have learned from your other second-block course on how
1. 1 answer
2. asked by Shay
3. 1,102 views
Find the volume of a cap of a sphere with radius r=86 and height h=48.
1. 0 answers
2. asked by John
3. 425 views
BOB pursley
1. 0 answers
2. asked by Portia
3. 395 views
Part III: Mathematics of FinanceYou have just graduated from college and landed your first big job. You have always dreamed of
1. 2 answers
2. asked by tammy lo
3. 506 views
what is a cross product please respond ASAP!!
1. 1 answer
2. asked by Anonymous
3. 396 views
calculate the period and frequency of a 3.500 m long pendulum at the following locations:a) the north pole, where acceleration
1. 2 answers
2. asked by giselle
3. 2,855 views
You add thiocynanate ions to a solution The molarity of silver ion is 0.1M initially. Calculate the max concentration of SCN-
1. 0 answers
2. asked by emily
3. 464 views
find the nth derivative of 2/(x+1)
1. 2 answers
2. asked by amy
3. 968 views
Fe3+ is added to excess Ag+ prior to titration with KSCN. When all the excess Ag+ has reacted, the red complex of Fe(SCN)2+
1. 0 answers
2. asked by emily
3. 455 views
I need assistance with this question please."The equation of the line for a graph of voltage (Ecell) versus log[Cu2+] was y=
1. 0 answers
2. asked by upthecreek
3. 971 views
I am trying to cite the novella Aura for my works cited page.Fuentes, Carlos. Aura. Bilingual Edition, New York, 1965 Is this
1. 4 answers
2. asked by Hannah
3. 1,272 views
A British company is sending you measurements for a table to build in your factory. The table top must be 50 cm × 75 cm. Your
1. 2 answers
2. asked by tish
3. 1,679 views
A rocket-powered hockey puck has a thrust of 2.40 and a total mass of 1.40 . It is released from rest on a frictionless table,
1. 0 answers
2. asked by Dan
3. 593 views
HiTrying to work with confusing Taylor series....any assistance would be much appreciated!! How can I use
1. 0 answers
2. asked by Kiksy
3. 417 views

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