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Questions Asked on April 19, 2010

A piano tuner stretches a steel piano wire with a tension of 765 N. The steel wire has a length of 0.400 m and a mass of 3.00 g.
1. 2 answers
2. asked by Anonymous
3. 5,135 views
Rank these conformational isomers in order of decreasing potential energy?Highest on the left and lowest on the right. To rank
1. 1 answer
2. asked by Random User
3. 4,141 views
Imagine you are in an open field where two loudspeakers are set up and connected to the same amplifier so that they emit sound
1. 3 answers
2. asked by Anonymous
3. 4,078 views
At 1285 degree C the equilibrium constant for the reactin Br2(g) <> 2Br(g) is Keq= 1.04 * 10^-3. A 0.200 L vessel containing an
1. 3 answers
2. asked by Peter
3. 3,943 views
In liquid propanol,CH3CH2CH2OH which intermolecular forces are present? a)Only dispersion and dipole-dipole forces are present.
1. 1 answer
2. asked by ada
3. 3,748 views
what is the volume occupied by 0.118 mol of helium gas at a pressure of 0.97 atm & temp of 32 C? R= 0.0821 L atm/mol K
1. 2 answers
2. asked by Tracey
3. 3,567 views
What pH is needed to produce this value of Q if the concentration and pressure values are. Q= 1.38*10^-26Br2=2.50*10^-4M
1. 5 answers
2. asked by Sanaa
3. 2,560 views
Which type of bonding does Sr form upon solidification?
1. 1 answer
2. asked by ada
3. 2,318 views
where should an object be placed in front of a concave mirror so that it produces an image at the same location as the object?
1. 1 answer
2. asked by ESMERALDA
3. 2,278 views
to clean a clogged drain, 26 g of sodium hydroxide is added to water to make 150 ml of solution what are the pH and pOH values
1. 1 answer
2. asked by Caitlin
3. 2,217 views
A used car dealership has found that the length of time before a major repair is required on the cars it sells is normally
1. 3 answers
2. asked by victoria
3. 2,186 views
Determine the volume of 200g of carbon tetrachloride,for wich specific gravity is 1.6
1. 1 answer
2. asked by KABELO
3. 2,131 views
HiWhat is the netionicequation for NaOBr disolving in watr? Thanks!
1. 4 answers
2. asked by Kiki
3. 2,102 views
what volume of carbon dixoide (CO2) will be produced if 2.90 moles of iron (Fe) is produced
1. 2 answers
2. asked by Bianca
3. 1,982 views
When 25.0 g of Zn reacts, how many L of H2 gas are formed at 25 °C and a pressure of 854 mmHg?
1. 1 answer
2. asked by kellie
3. 1,968 views
Sam owns a triangular piece of land on which the tax collector wishes to determine the correct property tax. Sam tells the
1. 1 answer
2. asked by sarah
3. 1,927 views
An ice cube having a mass of 50 g and an initial temperature of -20⁰C is place in 400 g of water 30⁰C water. What is the
1. 1 answer
2. asked by Nina
3. 1,790 views
solve the initial value problems:1- dq/dz = 2 + sinz, q(0)=5 2-dy/dx = (x^2 -2)x, y(2)=4 3-dy/dx = 4e^5^x + x, y(0)=4 4- dy/dx
1. 2 answers
2. asked by piper
3. 1,760 views
Balance the following:Ca(OH) + H2SO4 -----> CaSO4 + H2O Na2S2O3 + I2 -----> 2NaI + Na2S4O6 ZnCl + Na2S -----> ZnS + NaCl SnCl4 +
1. 1 answer
2. asked by Akira
3. 1,747 views
Which of the following atoms is paramagnetic?Zn, Sr, Kr, Te, Ca? How do you tell if the atom is paramagnetic or not?
1. 1 answer
2. asked by Danielle
3. 1,693 views
. Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20. Use the 68-95-99.7
1. 2 answers
2. asked by Adam
3. 1,692 views
Comparisons of amino acid sequences from different organisms often shed light on the evolutionary divergence of related species.
1. 1 answer
2. asked by B
3. 1,625 views
Which of the following compounds has the highest boiling point?HI H2Te H2O AsH3
1. 1 answer
2. asked by ada
3. 1,604 views
Assume the body temperatures of healthy adults are normally distributed with a mean of 98.20 °F and a standard deviation of
1. 2 answers
2. asked by Sasha
3. 1,542 views
Please, anyone help me please.Q: An object is placed 17.8 cm from a first converging lens of focal length 13 cm. A second
1. 2 answers
2. asked by Chan
3. 1,523 views
When a 0.045 kg golf ball takes off after being hit, its speed is 35 m/s.A)How much work is done on the ball by the club?
1. 1 answer
2. asked by Will
3. 1,503 views
help in solving log7 (1/49) = x
1. 2 answers
2. asked by Lisa
3. 1,494 views
How would you use classical conditioning, operant conditioning,and observational learning to improve your academic performance?
1. 1 answer
2. asked by lily
3. 1,461 views
What is a verb form ending with -ing called?1. gerund infinitive possessive passive Question 2 A verb form that begins with to
1. 3 answers
2. asked by christopher
3. 1,441 views
A stock solution was prepared by dissolving exactly 0.4000 g of pure ASA (180.16 g/mol)in 10.00 mL of NaOH and heating the
1. 2 answers
2. asked by ChEm
3. 1,439 views
1. Which of the following statements are correct?a. A normal distribution is any distribution that is not unusual. b. The graph
1. 1 answer
2. asked by Jackie
3. 1,404 views
how many moles of carbon dioxide will be produced when 2.8 moles of oxygen react (consider the combustion of ethylene:C2H4 + 3
1. 3 answers
2. asked by chem help
3. 1,367 views
What [I] should be maintained in KI(aq) to produce a solubility of 2.0×10−5 mol PbI2/L when PbI2 is added?i did...x^3 =
1. 1 answer
2. asked by anonymous
3. 1,305 views
25 ml sample of 0.150 m solution of aqueous trimethylamine is titrated with 0.100 M soultion of hcl. calculate the pH of the
1. 0 answers
2. asked by Jake
3. 1,285 views
Can someone please proofread my paragraph? I already edited it as much as I could. Thanks!Notre classe de français vient
1. 5 answers
2. asked by amanda
3. 1,273 views
Need an answer to this Calculus Question. I keep getting this type of question wrong. Thanks.Differentiate the Function: y =
1. 1 answer
2. asked by Dave
3. 1,257 views
One card is selected at random from an ordinary set of 52cards. Find the probability of each of the following events: b. A spade
1. 3 answers
2. asked by crystal
3. 1,253 views
You have arranged that the magnetic field in a particular region of space is due North with a value of 0.009 T. An electron
1. 0 answers
2. asked by Steve
3. 1,246 views
Hi,I'm working on my Learning Log of Vocabulary Words, and there are two words that I can't find sentences for abnegate, and
1. 5 answers
2. asked by y912f
3. 1,239 views
create a 10-15 slide presentation comparing and contrasting the roles that ethics and laws play within organizations.
1. 4 answers
2. asked by shauntae
3. 1,216 views
For each of the following, tell how many noncongruent triangles PQR fit the given description, and find the size of angle Q.
1. 0 answers
2. asked by john
3. 1,205 views
Solve the pairs of simultaneous equations by the substitution method.5x-9y=17 3x-8y=5
1. 3 answers
2. asked by Gilda
3. 1,199 views
• Post a 7- to 9-slide (not including title slide or reference slide) PowerPoint® presentation according to the following:Lis
1. 4 answers
2. asked by Sheei
3. 1,156 views
Barium has a radius of 224 pm and crystallizes in a body-centered cubic structure. What is the edge length of the unit cell?
1. 2 answers
2. asked by gagaga
3. 1,136 views
A mass attached to a spring executes simple harmonic motion in a horizontal plane with an amplitude of 1.07 m. At a point 0.4815
1. 1 answer
2. asked by eric
3. 1,102 views
1. He was sick so he couldn't go to work.2. He was sick, so he couldn't go to work. 3. He was sick so that he couldn't go to
1. 1 answer
2. asked by rfvv
3. 1,100 views
A popular brand of automobile radiator antifreeze advertises that their product (ethylene glycol; C2H6O2) provides engine
1. 1 answer
2. asked by Angelica
3. 1,100 views
provide recommendation how to address the human problem?
1. 4 answers
2. asked by lerato
3. 1,092 views
A sample of Helium occupies 200 L at 30ºC under a pressure of 970 torr. What is the volume it occupies at standard temprature
1. 1 answer
2. asked by Lynn
3. 1,091 views
[Ag(NH3)2]+ is a colorless complex ion right?
1. 1 answer
2. asked by gagaga
3. 1,088 views
in response to the sheer size of american cities, the combination of urban political machines and "bosses" emerged to reveal a
1. 1 answer
2. asked by dyyyyddee
3. 1,079 views
Two bike riders X and Y both start at 2 pm riding towards each other from 40 km apart.X rides at 30 km/h, Y at 20 km/h. If they
1. 2 answers
2. asked by Sindy
3. 1,067 views
I am comparing grant income2002,$617,169.00,2003,$632,889,00 and 2004 $1,078,837.00
1. 1 answer
2. asked by renee
3. 1,049 views
a mathematics professor wishes to analyze the relationship between the number of papers graded by his department's student
1. 0 answers
2. asked by Anonymous
3. 1,043 views
If a transformer has 3,000 loops in its primary coil and 1,500 loops in its secondary coil, how do I find the voltage in the
1. 2 answers
2. asked by Lynda
3. 1,031 views
A circular curve of highway with radius 200m is designed for traffic moving at 100km/h, and is banked so that cars can make the
1. 1 answer
2. asked by Joey
3. 1,020 views
A solution of sodium chloride in water has a vapor pressure of 18.5 torr at 25°C.What is the mole fraction of NaCl in this
1. 2 answers
2. asked by Jenn
3. 1,008 views
What are the advantages and disadvantages of grouped data?
1. 1 answer
2. asked by Yolanda
3. 1,007 views
A VENTURI TUBE IS USED TO MEASURE THE WATER SPEED V IN A PIPE BY COMPARING THE WATER PRESSURE IN THE WIDE AND NARROW
1. 1 answer
2. asked by KABELO
3. 1,004 views
a homeowner wishes to drain her swimming pool by siphoning the water,whose depth is h,into a nearby gully a distance H below
1. 1 answer
2. asked by KABELO
3. 1,003 views
How can the Tyndall effect be used to distinguish between a colloid and a solution?Can the presence of Brownian motion
1. 3 answers
2. asked by Kim
3. 1,001 views
In a particular hospital, newborn babies were delivered yesterday. Here are their weights (in ounces):106 104 96 123 116
1. 1 answer
2. asked by Nathan
3. 999 views
What is the coordination number of the Fe atom in K3[Fe(C2O4)3]?is it 6?
1. 1 answer
2. asked by gagaga
3. 990 views
two trains start from towns 208 miles apart and travel towards each other on parallel tracks. They pass each other 1.6 hours
1. 2 answers
2. asked by MB
3. 945 views
A siren mounted on the roof of a firehouse emits sound at a frequency of 900 Hz. A steady wind is blowing with a speed of 15
1. 0 answers
2. asked by Stephanie
3. 940 views
a math professor is thrown off the matthews bridges, height 240ft, by a disgruntled calculus class with an intitial upward
1. 0 answers
2. asked by miley
3. 937 views
1. "He is very nice," said Bill.2. " How nice he is!" Bill said. 3. "How are you?" he said. 4. "Go away," said he. 5. "Shall we
1. 2 answers
2. asked by rfvv
3. 935 views
In lab we conducted a calorimetry experiment with a peanut. We burned a half a peanut and placed it underneath a pop can with
1. 1 answer
2. asked by Anonymous
3. 908 views
A person weighs 872 N in air and has a body fat percentage of 20.7%.a. What is the overall density of this person's body? b.
1. 1 answer
2. asked by Ann
3. 907 views
c2h4(g) + 3O2(g) -> 2 CO2 (g) + 2 H2O (g)What volume of oxygen will react with 18 ml of ehtylene, c2h4, assuming that the gases
1. 1 answer
2. asked by Monica
3. 906 views
Which of the following has the highest vapor pressure?CCl4 CBr4 CH3CH3 CH3CHBr2
1. 1 answer
2. asked by Tiffany
3. 879 views
If you have CL2 + H2o ---> H+ + Cl- + HOCland you are given [HOCl] = 0.06 M and you have to find pH.... can you assume that
1. 3 answers
2. asked by Kiki
3. 859 views
If you ordered two pizzas for dinner Friday. Date ate 3/4 of one pizza, Jenny ate 1/8 of a pizza, Danny ate 1/4 of a pizza, and
1. 1 answer
2. asked by Tysheera
3. 854 views
A rod has a charge of -2.0 ìC. How many electrons must be removed so that the charge becomes +3.3 ìC
1. 1 answer
2. asked by Arnold Manguy
3. 848 views
Calculate the energy that must be removed to convert substance X from a gas at 115°C to a solid -50.7°C. Assume X has a molar
1. 1 answer
2. asked by Trish
3. 824 views
To tighten a bolt, you push with a force of 90 N at the end of a wrench handle that is 0.45 m from the axis of the bolt.(a) What
1. 0 answers
2. asked by Anonymous
3. 820 views
Four identical metal objects each carry different charges. The charges are +1.6, +8.2, -4.8, and -9.4 ìC. These objects are
1. 0 answers
2. asked by Anonymous
3. 817 views
1. Discuss how Alexander the Great created an empire in which Greek civilization flourished in the midst of many diverse
1. 1 answer
2. asked by Prince
3. 812 views
how would you go about calculating the change in H' of the reaction 2N2O <-> 4NO2+O2 if you are given the H'of formation for N2O
1. 3 answers
2. asked by john
3. 812 views
Calculate the energy that must be removed to convert substance X from a gas at 115°C to a solid -50.7°C. Assume X has a molar
1. 1 answer
2. asked by Trish
3. 804 views
Which sentence below contains a dangling modifier?Keeping to himself, the corner of the room seemed like a good place to stand.
1. 5 answers
2. asked by christopher
3. 794 views
The effect of depreciation can be computed using a formula similar to the formula for compound interest.a. Assume depreciation
1. 1 answer
2. asked by billy bob
3. 789 views
Can we try this again? I already posted this question and thank you for responding but I just don't understand. I am posting it
1. 1 answer
2. asked by Meredith
3. 764 views
Case 9-2 Purchase of AssetsOn October 10, 2005, Mason Engineering Company completed negotiations on a contract for the purchase
1. 0 answers
2. asked by Anonymous
3. 762 views
Given the business situation of Mrs. Acres Homemade Pies (p. 30) and using the economic concepts of supply and demand, explain
1. 2 answers
2. asked by cindy
3. 756 views
A student weighed out 1.5g of salicylic acid into a flask and then added 4ml of acetic an hydride to react. He also added 5
1. 1 answer
2. asked by Anonymous
3. 749 views
Write a summary comparing and contrasting the characteristics of Roman and Greek architecture in 200 to 300 words.Provide
1. 2 answers
2. asked by Denise
3. 745 views
Two golf balls of equal size and mass are released simultaneously from the roof of a building. One of the balls has a smooth
1. 2 answers
2. asked by Eddy
3. 741 views
Calculate the molar solubility of barium thiosulfate in 0.0045 M Na2S2O3(aq). (Hint: Check any simplifying assumptions that you
1. 1 answer
2. asked by Chemistry Confused
3. 738 views
[Ag(NH3)2]+ is a colorless complex ion right?
1. 1 answer
2. asked by gagaga
3. 726 views
Solve this quadratic equation b2 - 10b plus 25 equals 0
1. 3 answers
2. asked by Anonymous
3. 711 views
a hydraulic press contains oil of density=800kg/meter cube,and the areas of the large cylinder=0.5meter squad and area of small
1. 1 answer
2. asked by KABELO
3. 711 views
oil is added to the right hand arm of a U-tube containing water.The oil floats above the water to a height of h=10cm.The top of
1. 1 answer
2. asked by KABELO
3. 709 views
A meter stick, suspended at one end by a 0.348m long light string, is set into oscillation. The acceleration of gravity is 9.8
1. 1 answer
2. asked by Anonymous
3. 703 views
At Shannons birthday Kira ate 3 pieces, Brazdley ate 2,Shauna ate 4, and Sammi ate 3 pieces of pizza. Now 1/4 of the pizza is
1. 3 answers
2. asked by Ray
3. 698 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 6784
3. 698 views
A student performs a back-titration to determine the cost -effectiveness of an antacid. A tablet with a retail cost of $0.053 is
1. 1 answer
2. asked by Lisa
3. 695 views
A student claims that if a fair coin is tossed and comesup heads 5 times in a row, then, according to the law of averages, the
1. 1 answer
2. asked by jennifer
3. 691 views
Rashida has a monthly income of $200.which sheallocates between two goods meat and potatoes,(a)suppose meat cost$4 per pound and
1. 1 answer
2. asked by raeesa javed
3. 672 views
Can someone assit me with my two math problemsAssume that the salaries of elementary school teachers in the united states are
1. 1 answer
2. asked by Tasha
3. 664 views

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