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2010
April

Questions Asked on April 14, 2010

Which of the following gases is the best choice for inflating a balloon that must remain inflated for a long period of time?a)
1. 5 answers
2. asked by Lee
3. 6,151 views
What is the kinetic energy of an automobile with a mass of 1250 kg traveling at a speed of 11 m/s?
1. 3 answers
2. asked by glenn
3. 3,657 views
A 225-kg crate is pushed horizontally with a force of 710 N. If the coefficient of friction is 0.20, calculate the acceleration
1. 5 answers
2. asked by Nathan
3. 3,628 views
Zeta Corporation has issued a $1,000 face value zero-coupon bond. Which of the following values is closest to the correct price
1. 2 answers
2. asked by Dantavis
3. 3,600 views
I'm trying to find the solubility of Ca(OH)2 in .0125 mol/L aqueous NaOH. Here is my data:Vol of solution used per titration:
1. 5 answers
2. asked by Kristin
3. 2,892 views
a license plate has 2 letters followed by 4 digits.how many license plates are possible if the digits and letters can be
1. 7 answers
2. asked by anna
3. 2,745 views
A fisherman notices that his boat is moving up and down periodically, owing to waves on the surface of the water. It takes a
1. 4 answers
2. asked by linda
3. 2,643 views
As soon as a traffic light turns green, a car speeds up from rest to 50.0 mi/h with a constant acceleration of 8.10 mi/h·s. In
1. 1 answer
2. asked by Lisa
3. 2,438 views
Analogy: broom is to sweep AS brush is to _____________ 5 letter word that starts with either scr, spr, str, or thr.I've been
1. 6 answers
2. asked by Sammy
3. 2,300 views
The highway department keeps its sand in a conical storage building that is 24 feet high and 64 feet in diameter. To estimate
1. 1 answer
2. asked by Yadlay
3. 2,246 views
If a gaseous mixture is made of 2.41 g of He and 2.79 g of Ne in a evacuated 1.04-L container at 25 degrees Celcius, what will
1. 1 answer
2. asked by Leilani
3. 2,144 views
Suppose you want an 85 percent confidence level. What value would you use to multiply the standard error of the mean by?
1. 2 answers
2. asked by cheez
3. 1,924 views
SICK"I cannot go to school today," Said little Peggy Ann McKay, "I have the measles and the mumps, A gash, a rash, and purple
1. 4 answers
2. asked by Sara
3. 1,924 views
When the Kelvin temperature of an enclosed gas doubles, the particles of the gas ____.a) strike the walls of the container with
1. 2 answers
2. asked by Megan
3. 1,778 views
How many alcohols (including both structural isomers and stereoisomers) can have the molecular formula C4H10OI know what
1. 1 answer
2. asked by Areeb
3. 1,740 views
A supporting wire is to be attached to the top of a 32-foot antenna. If the wire must be anchored 32 feet from the base of the
1. 1 answer
2. asked by Mala
3. 1,718 views
calculate the molarity of 30.0g of NaOH in 350. mL of NaOH solution
1. 1 answer
2. asked by Anonymous
3. 1,702 views
Van Gogh’s painting Starry Night measures 92 cm long by 73 cm high. You buy a poster that shows an enlargement of the
1. 3 answers
2. asked by Mimi<3
3. 1,687 views
Please how do i calculate this problem.Your girlfriend just won the Power Ball lottery. She has the choice of $10,000,000 today
1. 2 answers
2. asked by Sparkle101
3. 1,589 views
what is the pressure exerted by 32g of 0xygen(O2) in a 22.0 L container at 30.0`C?What Law do I use?
1. 4 answers
2. asked by Lee
3. 1,545 views
Find the molecular mass of a solute by freezing point depression. Solvent: para-dichlorobenzene Freezing point of pure solvent:
1. 2 answers
2. asked by anonymous
3. 1,539 views
Which of the following atoms would have the greatest velocity if each atom had the same kinetic energy?Ammonia? Bromine?
1. 2 answers
2. asked by Lee
3. 1,459 views
how many moles of oxygen are needed to react with 3.5moles of ethylene, considering the combustion of ethylen C2 H4 + 3O2 --
1. 3 answers
2. asked by Jazminh
3. 1,447 views
A bookcase is to be constructed as shown in the figure below. The height of the bookcase is 4 feet longer than the length of a
1. 2 answers
2. asked by Anonymous
3. 1,441 views
Predict whether the equivalence point of each of the following titrations is below, above, or at pH 7: Pyridine titrated with
1. 3 answers
2. asked by Joan
3. 1,416 views
Trimellitic acid containing carbon, hydrogen, and oxygen has 51.44% C, 2.88% H, and 45.68% O. It can be obtained by oxidation of
1. 1 answer
2. asked by David
3. 1,401 views
Calculate the percent by mass of water in magnesium sulfate heptahydrdrate (MgSO4-7H2O)
1. 1 answer
2. asked by Kim
3. 1,381 views
Which of the following substances dissolve to a significant extent in water? Explain your answer in terms of polarity.a) CH4 b)
1. 1 answer
2. asked by Kim
3. 1,378 views
The equilibrium constant kc for the reactionN2(g)+ 3H(g)---2NH3(g) at 450C is 0.159. Calculate the equilibrium composition when
1. 1 answer
2. asked by Anna
3. 1,365 views
Determine whether the statement is always true, sometimes true, or never true.3) The length of the hypotenuse of a right
1. 5 answers
2. asked by nicole
3. 1,362 views
true(t) or false (f)1)f reading is not a real hobby 2)f an activity that is done outdoors is not a hobby 3)t photography is a
1. 3 answers
2. asked by marina
3. 1,339 views
How much energy is emitted in each α decay of plutonium-234? (234Pu, 234.0433mu; 230U, 230.0339mu; 4He = 4.0026 mu).I tried
1. 3 answers
2. asked by Trixie
3. 1,316 views
Two matrices can be multiplied only if their sizes are compatible. Suppose that U is an m × n matrix, and that V is a p × q
1. 0 answers
2. asked by Yadlay
3. 1,287 views
Use the relativistic coordinate transformation(x, y, z, t) − (x′, y′, z′, t′) shown and given below where the latter
1. 1 answer
2. asked by Angie
3. 1,247 views
Two Concept Questions for you:1) Why is the concentration of a solution such as NaH2PO4 ignored when calculating the pH given
1. 2 answers
2. asked by Chemistry Confused
3. 1,227 views
O God I hate word problems! Is there any mechanical way to memorize word problems?Can anyone just change this Following word
1. 1 answer
2. asked by Me
3. 1,227 views
Let and List all the elements of the following sets.A = {1,2} and B = {0,1,2} A x A A x B B x A A x B x A how do i do this?
1. 2 answers
2. asked by looking for someone to varify my work please
3. 1,217 views
A coin rests 15 cm away from the center of a turntable. The turntable starts to rotate at an angular acceleration of .8 rad/s^2
1. 1 answer
2. asked by phill
3. 1,210 views
Mirk Labs is a British pharmaceutical company that currently enjoys a patent monopoly in Europe, Canada, and the U.S on Zatab,
1. 2 answers
2. asked by N/A
3. 1,208 views
If the measure of an exterior angle of a triangle is 75 degrees, then what are the measures of the two remote interior angles?
1. 1 answer
2. asked by Ana
3. 1,208 views
in a competition 5 figure skaters will skate in a randomely assigned order. why can't you evaluate the product 5*5*5*5*5 to find
1. 1 answer
2. asked by ashly
3. 1,193 views
a spring with a spring constant of 4 newtons per meter is compressed by a force of 1.2 newtons. what is the total elastic
1. 2 answers
2. asked by Anonymous
3. 1,185 views
Which of the following plots is not appropriate for categorical data?a) dot plot b) bar graph c) pie graph d) segmented bar
1. 1 answer
2. asked by Sam
3. 1,177 views
Write the numbers in order of increasing size. 0.81, 0.811, 0.888, 8/10, 0.8181I think it may be 0.888, 8/10, 0.81, 0.8181, 0.81
1. 1 answer
2. asked by Bart
3. 1,174 views
For the metal elements, whats the connection between the ion charge and the # of electrons in the outershell?I wrote: The ion
1. 4 answers
2. asked by Sara
3. 1,167 views
Consider the solid that lies above the square (in the xy-plane) R=[0,2]*[0,2],and below the elliptic paraboloid
1. 0 answers
2. asked by Salman
3. 1,160 views
What word is NORCETMAIN unscrambled in French?
1. 1 answer
2. asked by Allison
3. 1,152 views
substitution for 5r-s=5 -4r+5s=17
1. 1 answer
2. asked by Anonymous
3. 1,131 views
Exercise 9-13: Accounts receivable turnover L.O. A1The following information is from the annual financial statements of Lucilla
1. 1 answer
2. asked by bobbie
3. 1,121 views
Ms. Sue could you take a moment to look at my previous post please. I've responded and said what I think that line means.(I
1. 3 answers
2. asked by Sara
3. 1,113 views
For a 0.001 molar solution of NH4HCO3, the van’t Hoff factor would be abouta. 1. b. 2. c. 3. d. 4. e. 5.
1. 2 answers
2. asked by write2khin
3. 1,069 views
resources, materials, and translation services for families whose home language is other than English. Provide the agency name
1. 2 answers
2. asked by Anonymous
3. 1,068 views
Calculate the mass percent of acetic acid in acetic acid solution.Average molarity= .8806753M Average density= 3.27463 Molar
1. 3 answers
2. asked by Michelle
3. 1,051 views
when water is added to solid calcium carbide, CaC2, acetylene gas, C2H2, and calcium hydroxide, Ca(OH)2 are produced.how do i
1. 3 answers
2. asked by herjaz
3. 1,034 views
The work function for potassium is 2.24eV.If potassium metal is illuminated with light of wavelength 310 nm, find the maximum
1. 3 answers
2. asked by Emily
3. 1,018 views
Write the slope-intercept form of an equation of the line that passes through the given point and is parallel to the graph of
1. 3 answers
2. asked by Shadow
3. 1,006 views
convert the mixed number 145/7 to mixed decimal. round to the nearest hundredth
1. 2 answers
2. asked by Anonymous
3. 1,001 views
please solve for either x or y:x/2 + y/4 = 7
1. 1 answer
2. asked by Jesse
3. 991 views
using the trigonometric identities find the exact (radical form) value of cos (105 degrees)
1. 2 answers
2. asked by spencer
3. 985 views
What is the effect that scarce resources have on administrative ethics?
1. 1 answer
2. asked by april
3. 984 views
Two copper rings are dropped from a region where no magnetic field exists into a region where a strong magnetic field exists.
1. 1 answer
2. asked by Jordan
3. 980 views
When a child demonstrates an inability to leap over a barrier, his teacher checks to see if he mastered the skills of jumping
1. 1 answer
2. asked by Anonymous
3. 963 views
Interestingly, there have been several studies using cadavers to determine the moment of inertia of human body parts by letting
1. 1 answer
2. asked by zidd
3. 958 views
The value of the equilibrium constant (Kc) as represented by the first chemical equation is 2.70 x 10-3 at 1200 K. Calculate the
1. 1 answer
2. asked by andy
3. 957 views
Use an appropriate local linear approximation to estimate the value of Cotangent 46 degrees.
1. 1 answer
2. asked by Marcus
3. 955 views
(A) 2 students are sharing a loaf of bread. Student A eats half of the loaf, then student B eats half of what remains, then
1. 0 answers
2. asked by Harold
3. 954 views
lara arranged the books in her bookshelf by size. 2/10 of the books were tall and 1/2 of the books were medeium sized. If 12 of
1. 3 answers
2. asked by alisha
3. 951 views
-revise the sentence for a clear meaning here is the sentenceSurgeons moved around the operating room, skillfully using tools
1. 1 answer
2. asked by me
3. 948 views
C7H6O3+CH3OH→C8H8O3+H2OIn any experiment, 1.50g of salicyclic acid is reacted with 11.20g of methanol. The yield of methyl
1. 2 answers
2. asked by Molly
3. 945 views
Menge and colleagues performed experiments in which they exposed some populations of mussels to sea stars and excluded sea stars
1. 0 answers
2. asked by Hannah
3. 938 views
Predict whether the equivalence point of each of the following titrations is below, above, or at pH 7: Pyridine titrated with
1. 1 answer
2. asked by Joan
3. 925 views
An x-ray photon collides head-on with an electron and is scattered directly back at 160◦ toits original direction. What is the
1. 3 answers
2. asked by Angie
3. 904 views
A compressed gas cylinder contains 1.00 103 g of argon gas. The pressure inside the cylinder is 2035 psi (pounds per square
1. 5 answers
2. asked by kristen
3. 900 views
A sealed cylinder of gas contains nitrogen gas at 1.00 103 kPa pressure and a temperature of 14°C. The cylinder is left in the
1. 2 answers
2. asked by chandler
3. 895 views
how do i write a balanced equation for the reaction for Calcium Carbide, CaC2, acetylene gas, C2H2, and calcium hydroxide,
1. 1 answer
2. asked by jaime
3. 866 views
Internal resistance problem.Suppose that in Figure 3.3, Vo=13V, R1=250kphm, R2=375kohm, and Ri=1.9Mohm. Initially, the voltmeter
1. 0 answers
2. asked by james
3. 859 views
the inverted image of a light bulb is formed on a screen located 9 metres from spherical mirror.the image is 4 times larger than
1. 0 answers
2. asked by thinkwell mashwama
3. 856 views
The engine has an efficiency e1. The engine takes input heat Qh from a hot reservoir and delivers work W1. The heat rejected by
1. 0 answers
2. asked by Mike
3. 833 views
I have no idea how to do this:Express the ratio in simplest form. 5 yards to 24 feet convert yards to feet: 12 x 5 = 60 ft.
1. 3 answers
2. asked by Bart
3. 831 views
Can someone please help me with this question....When you blow bubbles into a glass of water, the following reactions take
1. 0 answers
2. asked by Jessie T.
3. 820 views
A solution is prepared that has [NH3]=1.00M and [Cl-]=0.100M. How many grams of AgNO3 can be dissolved in 1.00L of this solution
1. 0 answers
2. asked by Jeannie
3. 820 views
Hello :)I am teaching English as a foreign language on Friday ( 1st grade of high school, 6th year of learning English) My topic
1. 3 answers
2. asked by refy
3. 818 views
Centered 6 meters above the ground, a Ferris wheel of radius 5 meters rotates at 1 degree per second. Assuming that Jamie’s
1. 0 answers
2. asked by sarah B
3. 818 views
drawer contains 50 bolts and 150 nuts. Half of the bolts and half of the nuts are rusted. If one item is chosen at random, what
1. 1 answer
2. asked by RAJESH
3. 816 views
What happens whena nucleus is stabilized by losing alpha particles?
1. 1 answer
2. asked by Anonymous
3. 811 views
A box is pulled across a horizontal surface at a constant speed by a horizontal rope with tension T=30N. The coefficient of
1. 1 answer
2. asked by Jacob
3. 808 views
A survey of the 4707 vehicles on the campus of State University yielded the following circle graph.A pie graph is divded like
1. 2 answers
2. asked by bwb
3. 804 views
Create A 7- To 10-Slide Powerpoint® Presentation That Describes Environmental Benefits And Challenges Of Urbanization. In Your
1. 1 answer
2. asked by Shannon
3. 799 views
How many calories are absorbed by a sample of water with a mass of 500 grams as it changes from 50°C to 56°C? The specific
1. 0 answers
2. asked by sarah
3. 791 views
using the half angle method solve the triangle for whick the given parts are a=27 b=21 and c=24
1. 0 answers
2. asked by sam
3. 789 views
If oxygen is removed from a sample of air as iron rusts, what happens to the total pressure of the air?
1. 1 answer
2. asked by Lyly Nguyen
3. 788 views
A rod 14.0 cm long is uniformly charged and has a total charge of -22.0 μC. Determine the magnitudeand direction of the
1. 0 answers
2. asked by ChEm
3. 785 views
Describe the kinds of cnidarian body forms and cnidarian stinging cells.
1. 0 answers
2. asked by Anonymous
3. 771 views
Each hand in the game of bridge has 13 cards dealt from a regular deck of 52 cards.a) How many different bridge hands are
1. 1 answer
2. asked by CL
3. 761 views
A student tried to dissolve 5.0 grams of impure acetanilide in 50 Ml of hot water. However was not able to get it to dissolve.
1. 1 answer
2. asked by Stephanie
3. 760 views
7. Today you open a bank account and make a deposit of $6,000. Then you make the following deposits: in t=1 you deposit $6,500,
1. 1 answer
2. asked by Dantavis
3. 756 views
Identify at least two arguments in the article. Outline the premises and conclusions of each argument you find. Do the premises
1. 9 answers
2. asked by Joan
3. 753 views
is there a pattern betweent he # of electrons in the outers shell of an element and its position along the row in the Perioidic
1. 1 answer
2. asked by Sara
3. 748 views
Can you help me rephrase first part of the song "Parents just don't understand",please? Thank you very, very much in advance1)
1. 1 answer
2. asked by Franco
3. 744 views
a shell is fired from the cannon. the shell of mass 30kg is shot with an initial velocity of 30m/s. what is the momentum of the
1. 0 answers
2. asked by chiara
3. 733 views

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