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2012
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Questions Asked on May 12, 2012

A Sample of gas originally at 25 degrees C and 1 atm pressure in a 2.5 L container is allowed to expand until the pressure is
1. 2 answers
2. asked by John
3. 14,732 views
A mixture of Xe, Kr, and Ar has a total pressure of 6.7 atm. What is the mole fraction of Kr if the partial pressures of XE and
1. 2 answers
2. asked by John
3. 10,138 views
Write the balanced chemical equation for each of these reactions. Include phases. When aqueous sodium hydroxide is added to a
1. 7 answers
2. asked by Sarah
3. 6,278 views
Write log'2' 8 = 3 in exponential form?
1. 4 answers
2. asked by Greg
3. 5,002 views
For the reaction below, Kp = 1.16 at 800.°C.CaCO3(s) CaO(s) + CO2(g) If a 25.0-g sample of CaCO3 is put into a 10.2-L container
1. 2 answers
2. asked by Andrew
3. 4,564 views
Bacteria grow in a nutrient solution at a rate proportional to the amount present. Initially, there are 250 strands of the
1. 3 answers
2. asked by gwapa
3. 3,390 views
a car is spinning at a rate of 4.3pi radians/s. how many rotations will it make in an hour?
1. 1 answer
2. asked by kerry
3. 2,496 views
write 0.000436 in scientific notationanswer 4.36 X 10^-4
1. 3 answers
2. asked by pls check
3. 2,491 views
Calculate the pH at the equivalence point for the titration of 0.180 M methylamine (CH3NH2) with 0.180 M HCl. The Kb of
1. 1 answer
2. asked by Sarah
3. 2,127 views
The electronegativities of the elements are H=2.1, O=3.5, F=4.0, S=2.5, Cl=3.0. Determine (calculate) the electronegativity
1. 2 answers
2. asked by Bran
3. 2,109 views
If two number cubes are tossed, what is the probability of getting a sum that is less than 6, given that 1 number cube shows a 3
1. 2 answers
2. asked by Ana
3. 1,915 views
the arc length and central angle of a circle are 10cm and 80degrees respectivly. what is the length of the radius?
1. 1 answer
2. asked by celina
3. 1,762 views
Is CF4 an example of a central atom with an expanded octet?
1. 1 answer
2. asked by John
3. 1,539 views
a pie is cut into 8 equel slices. if a person wants 0.75(pie sign) centimetre of crust, about how many pieces should they take?
1. 3 answers
2. asked by chris
3. 1,313 views
A 20.0-kg model plane flies horizontally at a constant speed of 12.2 m/s.(a) Calculate its kinetic energy. . J (b) The plane
1. 1 answer
2. asked by Brianna
3. 1,312 views
How would I find the sum of the geometric series given?1/5 - 1/25 + 1/125
1. 1 answer
2. asked by Greg
3. 1,293 views
Vector A has magnitude 37 units and direction, counterclockwise from east, of 12.9 degrees. What is the value of its x component
1. 1 answer
2. asked by Tanner
3. 1,281 views
which of the following is true regarding doing online search for informationA. If your search turns up no hits, you need to use
1. 3 answers
2. asked by Moha
3. 1,242 views
8. Compare the mean for the heights of males and the mean for the heights of females in these data. Compare the values and
1. 2 answers
2. asked by jeanne
3. 1,209 views
For this problem my equation is Y=70+110e^ktbut i keep getting it wrong any suggestions? A roasted turkey is taken from an oven
1. 0 answers
2. asked by someone
3. 1,128 views
A lamp connected to a battery lights up. If a second, identical lamp is connected to the battery in parallel, the current drawn
1. 1 answer
2. asked by matthew
3. 1,117 views
Writeacher, could you please check if everything is OK?Thank you very much. 1) My classmates always keep me from work (from the
1. 1 answer
2. asked by Mike
3. 1,069 views
using product rule, power rule, negative rule using scientific notation.5.4*10^6/2.7*10^4=5.4/2.7*10^6/10^4=2*10^2
1. 0 answers
2. asked by plz help
3. 1,063 views
Given a square, what is the locus of points equidistant from the sides?
1. 2 answers
2. asked by My Name Is Bob
3. 1,045 views
Which was not one of the causes of the Great Depression?(Points : 5) excessive income taxes speculative stock purchases risky
1. 2 answers
2. asked by ahmed
3. 973 views
When light of wavelength 391 nm falls on apotassium surface, electrons are emitted that have a maximum kinetic energy of 1.72
1. 2 answers
2. asked by Jason
3. 965 views
i need three project topics in physics. Help please
1. 2 answers
2. asked by Joanna
3. 946 views
A rectangular solid has a base area of 43.3 sq inches and a height of 50 inches a triangular prism has a base in the shape of an
1. 1 answer
2. asked by Joshua
3. 896 views
Na (s) + 1/2F2 (g) = 2NaF (s)Are the reactants at higher or lower energy than the products and is the reaction endothermic or
1. 1 answer
2. asked by Bran
3. 890 views
103. A billiard ball, aimed at a point A on the edge of the cushion of a horizontal billiard table, rolls along a line making 18
1. 0 answers
2. asked by apolonio
3. 884 views
Hello My teacher skipped over this and I have no clue how to do this or the equations. Help would be wonderful thank youIf 6000
1. 2 answers
2. asked by someone
3. 882 views
The number of bacteria in a culture is modeled byn(t)=1710e071t (a) The initial number of bacteria is (b) The relative rate of
1. 1 answer
2. asked by someone
3. 873 views
A 0.140-mole quantity of CoCl2 is added to a liter of 1.20 M NH3 solution. What is the concentration of Co^2+ ions at
1. 1 answer
2. asked by Sarah
3. 847 views
CaC2 (s) + 2 H20 (g) -> Ca(OH)2 (s) + C2H2 (g)The complete reaction of 22.7 g of CaC2 requires consumption of ________g of H2O.
1. 1 answer
2. asked by John
3. 847 views
A teaching method that uses computers to help children learn is called ?
1. 2 answers
2. asked by jennifer
3. 775 views
1-To determine the best place to begin your online research, you should firstA. identify keywords and search terms. B. formulate
1. 4 answers
2. asked by Moha
3. 773 views
a pie is cut into 8 equel slices. if a person wants 0.75(pie sign) centimetre of crust, about how many pieces should they take?
1. 1 answer
2. asked by chris
3. 758 views
If the larger of two numbers is divided by the smaller, the quotient and the remainder are 2 each. If 5 times the smaller number
1. 1 answer
2. asked by Arshia
3. 745 views
I would greatly appreciate it if someone would please be kind enough to take the time and show me how to work these problems.
1. 1 answer
2. asked by Please help me
3. 738 views
a charged particle is in point (2, 3, 8) and has a charge Q1 = 5x10-10C. Another particle is at (5,7,0) and has a charge Q2 =
1. 4 answers
2. asked by Filip
3. 728 views
I just have a few questions.Ok so the main point of being a Art/Writing Therapist is ...... when you talk to teenagers, children
1. 3 answers
2. asked by Laruen
3. 719 views
The electronegativities of the elements are H=2.1, O=3.5, F=4.0, S=2.5, Cl=3.0. Determine (calculate) the electronegativity
1. 1 answer
2. asked by Bran
3. 718 views
A Sample of gas originally at 25 degrees C and 1 atm pressure in a 2.5 L container is allowed to expand until the pressure is
1. 1 answer
2. asked by John
3. 702 views
If 9.03 x 1021 molecules of a compound having general formula CnH2n+2 weigh 1.71g, what is the molar mass of the compound? Give
1. 1 answer
2. asked by Susan
3. 671 views
A brown-eyed man marries a blue-eyed woman and they have eight children, all with brown eyes. Can you be sure whether the man is
1. 1 answer
2. asked by Anonymous
3. 665 views
Hello. I'll be very grateful if you help me with a few questions.1)Would you use the article in the context: "he became
1. 2 answers
2. asked by Ilma
3. 653 views
can anyone help me by finding which enzymes are present in carbohydrates?is it salivary amylase(tyalin)
1. 3 answers
2. asked by sandra
3. 642 views
1.On December 15, 2012, Pascal declared a cash dividend of $2.00 per share to stockholders of record on December 31. The
1. 0 answers
2. asked by ashley
3. 639 views
A research center claims that 50% of people believe that drivers should be allowed to use cellular phones with hands free
1. 1 answer
2. asked by Amber
3. 613 views
A pair of masses are attached by a string that runs over a pulley. The larger mass is on a frictionless incline that makes an
1. 2 answers
2. asked by Jay
3. 611 views
Which is the standard form of the equation with p = 26, O=3pi/4 ?the O before the =3pi has a diagonal slash through it.
1. 1 answer
2. asked by kelsey
3. 606 views
Window glass formerly was made by gathering a lump of molten glass on the end of a hollow rod blowing it into the form of a
1. 0 answers
2. asked by sara
3. 600 views
I need help atleast an equation to get started pleaseA lab assisstant wants to make five liters of 27.8% acid solution. If
1. 3 answers
2. asked by Janine
3. 596 views
In a raffle there are four winning tickets from 12, What is the probability from six tickets there are two winners?Thank you in
1. 1 answer
2. asked by William
3. 592 views
2 questions please:The highest positive oxidation number that chlorine can exhibit an any compound is +7, whereas its most
1. 0 answers
2. asked by Derrick
3. 591 views
Pure copper has a density of 8.933 g/cm^3. What is the volume of a 5 g block of copper?I did D=M/v Flipped the formula to V=M/D
1. 2 answers
2. asked by John
3. 589 views
the area of the total surface of a polyhedron weighing 64 lb. is 340 sq. in. what is the surface of a similar polyhedron made of
1. 1 answer
2. asked by sara
3. 585 views
I'm trying to conjugate this in the past tensetú/presentarse would I conjugate it in past tense like this- (tú te presentaste)
1. 3 answers
2. asked by Jake
3. 585 views
Some of the fields have large enough quantities of both oil and natural gas that coordination must achieved for the production
1. 1 answer
2. asked by tip
3. 581 views
In 1972, there were 3.4 trillion cigarettes purchased worldwide, and in 1984, there were 4.3 trillion cigarettes purchased
1. 1 answer
2. asked by Kwame
3. 557 views
If a match box has inside dimensions of 2 in. by 1 ¼ in. by 5/8 in., find the useful capacity of the box. The cover is made
1. 1 answer
2. asked by xzknij
3. 553 views
self-service procurement. self service business intelligence. self-service recovery. user provisioning in private clouds. it's a
1. 3 answers
2. asked by maria
3. 552 views
Na (s) + 1/2F2 (g) = 2NaF (s)Are the reactants at higher or lower energy than the products and is the reaction endothermic or
1. 1 answer
2. asked by Bran
3. 546 views
What are the advantages of having an ethics office or officer report to a company’s chief executive officer, the legal
1. 1 answer
2. asked by Priscilla
3. 545 views
Movie attendance dropped 8 percent as tick prices rose a little more than 5 percent. What is the price elasticity of demand for
1. 0 answers
2. asked by Ashaki
3. 540 views
If 33.7 ml of 0.210 M KOH is required to completely neutralize 27.0 ml of a HC2H3O2 solution, what is the molarity of the acetic
1. 1 answer
2. asked by Michael
3. 540 views
How smoking is a human factor tha may cause ill health,accidents,crises or disaster?
1. 1 answer
2. asked by Tsakani
3. 536 views
A group meeting is attended by 16 delegates.(a)If a 6-person negotiation panel is selected at random from the 16 delegates, what
1. 3 answers
2. asked by matt
3. 533 views
Hello. I will really appreciate some help.1)Do you think it's possible and natural to use "unsuccessfully" in the following
1. 1 answer
2. asked by Ilma
3. 519 views
Design the defining diagram, hierarchy chart and the algorithm that will determine the percentage sales commission earned on
1. 0 answers
2. asked by Devi
3. 518 views
Always forms virtual images at the same distance behind the optic as the object is in front of it.I thought it was concave but
1. 1 answer
2. asked by matthew
3. 516 views
Are these listed in the correct order of increasing average molecular speed?NH3<N2<CO2<SO2<Cl2 ???
1. 1 answer
2. asked by John
3. 515 views
Determine the pressure in atm for a 10 g of CO2 sample contained in a sealed 10 L tank at 50degrees C?Did anyone get 26.5 atm?
1. 4 answers
2. asked by John
3. 508 views
can someone tell me if i have the answer correcta. Suppose a market research company finds that at a price of p = $40, they
1. 1 answer
2. asked by nell
3. 501 views
Could you please check if these questions are all possible? Thank you, Writeacher.1)Focus on the first Hanoverians and answer
1. 1 answer
2. asked by Mike
3. 497 views
which of the following is true regarding doing online search for information
1. 3 answers
2. asked by moha
3. 494 views
does anyone know a poem about seashores and it has to be aroung grade 6 level thank u?
1. 2 answers
2. asked by smiley
3. 494 views
The probability that a voting-age adult in 2004 voted in the presidential election was 0.57. Five voting-age adults in 2004 were
1. 0 answers
2. asked by Timothy
3. 487 views
104. A fly stationed at a point on the circumference of the base of a cylindrical tower of radius 12 ft. finds that he can just
1. 1 answer
2. asked by apolonio
3. 486 views
find the altitude on hypotenuse if a=6cm and b=8cm?
1. 3 answers
2. asked by ma
3. 479 views
A 2630-kg car drives up a hill 769 meters high in 41.0 seconds. Calculate the power exerted
1. 2 answers
2. asked by Matt
3. 477 views
What punctuation is correct for this sentence? Comma or Semi-Colon?But these weren’t simply mashed; they were formed
1. 1 answer
2. asked by Teddy
3. 472 views
Hello, I'm having a hard time fingering our this question. Not really sure what formula to use. Thanks in advance!For a five
1. 0 answers
2. asked by lynn
3. 467 views
evaluate the expression. Assume h does not equal 0 h^o=
1. 0 answers
2. asked by plz help
3. 446 views
write 8,350,000 in scientific notationmy answer: 8.350 X 10^3
1. 1 answer
2. asked by pls check
3. 431 views
factor -16sin^2a+81
1. 1 answer
2. asked by sasha
3. 416 views
find the area of the earth's surface within the Arctic Circle; that is, in latitude north 66° 32' N. thank you! :D
1. 0 answers
2. asked by sara
3. 410 views
Simplify: (8x^8 y^27) ^1/3I need a little help learning how to work this problem out
1. 1 answer
2. asked by GREG B.
3. 407 views
Solve by Factoring2a^2 - 3a = -5
1. 1 answer
2. asked by kayla
3. 402 views
which two points of a trignometric function will always give an average rate of change of 0?
1. 0 answers
2. asked by shab
3. 381 views
if i use 30 ul from a total volume of 600ul to get 40ug/ml. So to get the total ug only, do i take
1. 0 answers
2. asked by eng
3. 363 views
i need a sentence for controle
1. 3 answers
2. asked by jessie
3. 359 views
i need help writing a outline for the movie blindside
1. 1 answer
2. asked by shelia
3. 352 views
solve -9< 4x - 4< -3
1. 1 answer
2. asked by Sue
3. 350 views
5(2z-1)-4(z+9)=4(z+1)type an intriguer or a simplified fraction this is a liner equation
1. 1 answer
2. asked by Taffany
3. 341 views
evaluate the expressions2(4/7)^0 my answer 2 (-8)^0 my answer 1
1. 1 answer
2. asked by pls check
3. 339 views
If a^x=b^y=c^z and b^2=ac then find value of y.
1. 1 answer
2. asked by Shobhit
3. 327 views
calculate10^1.27 how do i do this?
1. 4 answers
2. asked by hannah
3. 319 views
Multiply -7/5 * (6/7)
1. 1 answer
2. asked by Sue
3. 306 views

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