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Questions Asked on December 13, 2010

A cube of solid aluminum has a volume of 1.00 m^3 at 20 degree C. What temperature change is required to produce a 100-cm^3
1. 1 answer
2. asked by HELP
3. 4,943 views
1.) A vertical spring with a spring constant of 450 N/m is mounted on the floor. From directly above the spring, which is
1. 2 answers
2. asked by David
3. 4,682 views
if triangle FGH~ to Triangle PQR, FG = 6, PQ = 10 and the perimeter of trinagle PQR is 35 find the perimeter of triangle FGH
1. 3 answers
2. asked by Chris
3. 4,104 views
Find the point P in the first quadrant on the curve y=x^-2 such that a rectangle with sides on the coordinate axes and a vertex
1. 2 answers
2. asked by Gabriela
3. 3,805 views
At a rock concert, the sound intensity 1.0 in front of the bank of loudspeakers is 0.10 . A fan is 30 from the loudspeakers. Her
1. 2 answers
2. asked by Ness
3. 3,631 views
The length of a simple pendulum is 0.79m and the mass of the particle at the end of the cable is 0.24 kg. The pendulum is pulled
1. 1 answer
2. asked by David
3. 3,626 views
a survey indicates that 41% of women in the us consider reading as their favorite leisure time activity. you randomly select 4
1. 2 answers
2. asked by tiffany
3. 2,665 views
a ball mass 800g is dropped from height of 5m and rebounds to a hight of 3.8mthe air resistance is negligible. calculate a. the
1. 2 answers
2. asked by lewis
3. 2,660 views
The sum of the measures of the interior angles in a polygon is 540 degrees. How many sides does the polygon have?
1. 1 answer
2. asked by Carl
3. 2,637 views
In comparing an oak tree with a maple tree, you can correctly say thatA. oak is often used to make ships, while maple is often
1. 7 answers
2. asked by Anonymous
3. 2,328 views
Find A1 in a geometric series for which Sn=210, r=-2, and n=6?Can someone lead me in the right direction?
1. 5 answers
2. asked by student
3. 2,169 views
(a) Find the pressure difference on an airplane wing where air flows over the upper surface with a speed of 126 m/s, and along
1. 1 answer
2. asked by aok
3. 2,038 views
Which one in this pair has the larger radius? Explaina. Calcium atom or calcium ion b. Aluminum ion or Magnesium ion
1. 1 answer
2. asked by Ivy
3. 1,925 views
The radius of Earth is about 6.38 103 km. A 7.40 103 N spacecraft travels away from Earth. What is the weight of the spacecraft
1. 2 answers
2. asked by Anonymous
3. 1,794 views
A sample of propane gas, C3H8, was collected over water at 25 degree Celsius and 745 torr. The volume of the wet gas is 1.25 L.
1. 3 answers
2. asked by Ivy
3. 1,757 views
Excess fluorine, F2(g), reacts at 150°C with bromine, Br2(g), to give a compound BrFn. If 423 mL Br2(g) at 150°C and 748 mmHg
1. 1 answer
2. asked by chemistry
3. 1,661 views
Ruth is flying a kite. Her hand is 3 feet above ground level and is holding the end of a 375 foot long kite string, which makes
1. 3 answers
2. asked by Anonymous
3. 1,657 views
A 1125 kg car carrying four 80 kg people travels over a rough "washboard" dirt road with corrugations 4.0 m apart which causes
1. 3 answers
2. asked by Robert
3. 1,597 views
Which quantity of particles is correctly represented by the formula H2SO4? Explain.
1. 1 answer
2. asked by danny123
3. 1,532 views
the unique properties of water make life possible on earth, select three properties of water and: a) for each propery, identify
1. 2 answers
2. asked by Myles
3. 1,491 views
Given: obtuse triangle ABC with obtuse angle B. Point D on side AC such that angle BDC is also obtuse. Angle DAB is 2/3 of angle
1. 1 answer
2. asked by Kathy
3. 1,477 views
what are the solvent and solute in a solution containing 100g of ethanol and 3g of sucrose?
1. 1 answer
2. asked by Carla
3. 1,465 views
Based on molecular mass and boiling point of the five compounds in the table below, which should have the high?est dipole
1. 1 answer
2. asked by ben
3. 1,442 views
Explain the discontinuity in the trend for the first ionization energies between Mg and Al, also P and S.
1. 1 answer
2. asked by Davia
3. 1,418 views
What volumes will each of the following occupy at STP?a. 1.80 x 10^24 molecules of SO3 b. 7.5 mol C2H6 c. 25.2 grams chlorine
1. 2 answers
2. asked by Ivy
3. 1,404 views
10.2 g of Pb(NO3)2 are dissolved in 100 mL of water, and added to 250.0 mL of a 0.250 M solution of KI. Determine the mass in
1. 4 answers
2. asked by Lisa
3. 1,395 views
how many molecules of CH4 gas are present in a 1.00 L flask of CH4 gas at STP?
1. 3 answers
2. asked by Ivy
3. 1,379 views
In the memoirs, “Barrio Boy” and “No Gumption”, how are these two memoirs similar? How are they different? In what ways
1. 2 answers
2. asked by Vanna
3. 1,360 views
A tower casts a 235-foot-long shadow. If the angle of elevation from the tip of the shadow to the top of the tower is 66.3°,
1. 0 answers
2. asked by Mike
3. 1,334 views
A string has a linear density of 8.5*10^-3 kg and is under the tension of 280 N. The string is 1.8 m long, is fixed at both
1. 1 answer
2. asked by David
3. 1,309 views
ok. so this may be hard to explain and may not be enough info that you understand but ill try. I did a paper and my teacher
1. 2 answers
2. asked by hannah
3. 1,306 views
A coin is placed on a vinyl stereo record that is making 78 revolutions per minute on a turntable.Find the magnitude of the
1. 0 answers
2. asked by Becky
3. 1,294 views
A molecular compound is composed of 58.8% Xe, 7.2% O, and 34.0% F, by mass. If the molecular weight is 223 g/mol, what is the
1. 2 answers
2. asked by chemistry
3. 1,292 views
What element has the final electron configuration as 3s2 3p4?
1. 1 answer
2. asked by Jennifer
3. 1,292 views
Hello!Has anyone read the novel Fools Crow by James Welch? I just need your personal opinions on the question: Does the novel
1. 0 answers
2. asked by marky
3. 1,263 views
during the summer months, sarah makes and sells necklaces on the beach. last summer she sold the nacklaces for $10 each. Her
1. 3 answers
2. asked by ted
3. 1,260 views
How do you write a balanced net ionic equation for the reactionCr2(SO4)3(aq)+(NH4)2(CO3)(aq)?
1. 1 answer
2. asked by Sonia
3. 1,244 views
Two equal masses are attached to separate identical springs next to one another. One mass is pulled so its spring stretches 20
1. 2 answers
2. asked by leya
3. 1,223 views
A stretched string fixed at each end has a mass of 41.0 g and a length of 8.80 m. The tension in the string is 41.0 N.Nodes
1. 0 answers
2. asked by Mary-ann
3. 1,142 views
Find the mean for each set of data. Round to the nearest tenth if necessary.12, 20, 8, 15, 16, 14, 7, 5, 11, 8, 14 a. 11.8 b.
1. 29 answers
2. asked by david
3. 1,142 views
A farmer wants to create a rectangular pen, which will be divided into six separate sections, as shown in the accompanying
1. 1 answer
2. asked by Valerie
3. 1,128 views
What mass of hyudrogen peroxide should result when 1.50 g of barium peroxide is reacted with 25.0 mL of 0.50 M of hydrochloric
1. 1 answer
2. asked by Sandra
3. 1,115 views
what voule of 12M hydrochloric acid must be diluted with distilled water to prepare 5.0L of 0.10M HCl?
1. 2 answers
2. asked by Cassie
3. 1,098 views
A ceiling in a new home rises 8 feet over a distance of 29 feet. Find the slope of this ceiling. Round your answer to two
1. 1 answer
2. asked by Krystle
3. 1,090 views
Element M(a solid) reacts with an aqueous solution of compound B to form an aqueous solution of compound C(a salt) and a gas
1. 1 answer
2. asked by Patrick
3. 1,089 views
A car moves from a point located 26.0 m from the origin and at an angle of 35.0° from the x-axis to a point located 56.0 m from
1. 1 answer
2. asked by JT
3. 1,062 views
calculate the horizontal force that must be applied to produce an acceleration of 1 g for 1 kg. puck on a horizantal
1. 1 answer
2. asked by Anonymous
3. 1,051 views
if the chemical equation is CaCO3(s) + 2HCl(aq) > CaCl2(aq) + H2O(l) +CO2(g) and represents the reaction of an antacid, CaCO3,
1. 1 answer
2. asked by Kaila(:
3. 1,049 views
If 2.00g of Zn is allowed to react with 1.75g of CuSO4, how many grams of Zn wil remain after the reaction is complete?
1. 1 answer
2. asked by Jackie
3. 1,037 views
order the fractions from greates to least. 1/6, 2/7, 1/5.Can anyone help and explain this to me please
1. 5 answers
2. asked by Jazmin
3. 1,031 views
Chapter 1 & 2 Review Questions1. Compare and Contrast the two main branches of physical science. 2. Distinguish between
1. 2 answers
2. asked by jack
3. 1,023 views
a spring with a spring constant 30.0 N/m is stretched 0.200 m from its equilibrium position. How much work must be done to
1. 1 answer
2. asked by Tony
3. 1,021 views
Find sin(θ), cos(θ), tan(θ). Assume a = 40, b = 9, and c = 41.
1. 0 answers
2. asked by Mary-ann
3. 1,020 views
In a twelve-team bowling league, if every team plays every other team four times during the season. How many games must be
1. 3 answers
2. asked by Jay
3. 1,005 views
Two equal masses are attached to separate identical springs next to one another. One mass is pulled so its spring stretches 20
1. 1 answer
2. asked by leya
3. 1,005 views
Determine the molarity of nitrate ions in a solution prepared by mixing 25.0 mL of 0.50 M Fe(NO3)3 and 35.0 mL of 1.00 M
1. 4 answers
2. asked by Lisa
3. 995 views
Chapter 1 & 2 Review Questions1. Compare and Contrast the two main branches of physical science. 2. Distinguish between
1. 2 answers
2. asked by mido
3. 973 views
a baseball has a mass of 0.145kg. the ball is crossing the plate horizontally at 40 m/s when the batter hits the ball. The final
1. 2 answers
2. asked by Anonymous
3. 964 views
Consider the hypothetical elements X and Y. Suppose the enthalpy of formation for the compound XY is -336 kJ/mol, the bond
1. 2 answers
2. asked by Jude
3. 963 views
The approximate vapor pressure of CS2 at 30 degrees Celsius?
1. 0 answers
2. asked by Helen
3. 963 views
translate this polar equation into a rectangular form:rsin(2theta)=sin(theta) My answer: r2sin(theta)cos(theta)=sin(theta)
1. 2 answers
2. asked by Sara
3. 937 views
explain how the path of an electron differs in Bohr's model and in the modern model of the atom
1. 0 answers
2. asked by darmisha
3. 932 views
A gaseous compound has the following composition by mass: C, 25.0%; H, 2.1%; F, 39.6%; O, 33.3%. Its molecular weight is 48
1. 1 answer
2. asked by chemistry
3. 928 views
If I have a Galvanic cell of Nickel and Gold where Nickel is (Ni->Ni^+2 + 2e-) and the oxidation of gold is (Ag^+->Ag + e-) then
1. 1 answer
2. asked by Mo
3. 922 views
give the name and formulas of the compounds that rust is composed of
1. 1 answer
2. asked by jjre
3. 917 views
A train sounds its horn as it approaches an intersection. The horn can just be heard at a level of 42 dB by an observer 10 km
1. 0 answers
2. asked by Jake
3. 916 views
5. What are the dimensions of the lightest open-top right circular cylindrical can that will hold a volume of .8L?
1. 1 answer
2. asked by Adam
3. 894 views
what are the geography bee questions and answers of 2010
1. 1 answer
2. asked by yuku
3. 887 views
How much power does it takes to do 104 J of work in 8 seconds
1. 1 answer
2. asked by Andy
3. 880 views
Are ipod nano conglomerates? Or are they apart of a conglomerates? If so, how?
1. 1 answer
2. asked by Amy
3. 874 views
Consider the hypothetical elements X and Y. Suppose the enthalpy of formation for the compound XY is ƒ{336 kJ/mol, the bond
1. 1 answer
2. asked by chemistry
3. 853 views
If an annuity was set up for semiannual payments at the beginning of each period in the amount of $1,478, what would be the
1. 0 answers
2. asked by meme
3. 851 views
How many grams of FeSo4 are required to prepare 0.50 L of a 0.010 M FeSO4 solution?I don't need the answer just shown how to do
1. 1 answer
2. asked by Stacy
3. 847 views
A 220 kg wooden raft sits on a lake. When a 75 kg man stands on the raft, it sinks 4 cm deeper into the water. When he steps
1. 0 answers
2. asked by Anonymous
3. 830 views
find the total amount in the compound interest amount.$6350 is compounded semiannually at a rate of 18% for 16 yrs. (round to
1. 1 answer
2. asked by sarah
3. 803 views
• What is un bel composto (according to Bernini)
1. 1 answer
2. asked by Anonymous
3. 789 views
For decades, America has been locked in hostile confrontation with the two great Communist powers, the Soviet Union and the
1. 3 answers
2. asked by Anonymous
3. 787 views
A bill has been approved in the House and Senate, albeit in slightly different versions. The bill now goes to ??
1. 1 answer
2. asked by Margaret
3. 779 views
An airplane of mass 1.3 104 kg is moving at 64 m/s. The pilot then revs up the engine so that the forward thrust by the air
1. 0 answers
2. asked by Jane
3. 755 views
flowers for algernon trail playwhat are some questions to ask if you are the prosecution in the play to the doctors who did the
1. 0 answers
2. asked by yuku
3. 755 views
A 5.00 gram mixture of CaO and CaCO3 is heated strongly. After heating, the mixture has a mass of 4.00 grams. What % of the
1. 1 answer
2. asked by Paul
3. 751 views
a piece of iron has a temperature of 18 degrees celsius. A second identical piece of iron is twice as hot. What is the
1. 1 answer
2. asked by Sonia
3. 749 views
Compare the three types of bonds based on valence electrons.Explain why S-H bond lengths are longer than O-H bond lengths. Which
1. 0 answers
2. asked by mido
3. 745 views
Choose the sentence that's written in the passsive voice.A. To Kill a Mockingbird was written by Harper Lee. B. Watch for the
1. 1 answer
2. asked by Meosha
3. 741 views
How do you solve?3-3sinx-2cos^2(x) = 0
1. 6 answers
2. asked by Sophie
3. 738 views
I need to find the adjectives and adverbs in the following sentences, please help. I am having many problems with this.1. The
1. 6 answers
2. asked by Leigha
3. 738 views
Could someone please check my answers. If they are wrong could you give me the correct answer or tell me where to find
1. 2 answers
2. asked by PAT
3. 731 views
FIND THE DIAMETER AND CIRCUMFERENCE OF A CIRCLE THAT HAS A RADIUS OF 1.7 USE 3.14 FOR PI
1. 2 answers
2. asked by MASON
3. 724 views
I need help with an equation for: Find the force of attraction between a bowling ball of mass 7.26 kg and the earth if the
1. 1 answer
2. asked by anonymous
3. 722 views
A mixture of O2 and He is prepared for a scuba diver who is going to descend 200 ft below the ocean surface. At that depth, the
1. 1 answer
2. asked by steph
3. 717 views
A space probe is 7.62 x 10 to the 7th power kilometers from the surface of the planet Mars. If the space probe is traveling
1. 3 answers
2. asked by Amber
3. 711 views
I need help writing an analytical thesis statement.The topic is -Analyze the main problems facing the United States under the
1. 1 answer
2. asked by Anabelle
3. 706 views
For my english class i had to right a paper on civil war slang and how this topic releated to the book The Red Badge of Courage.
1. 4 answers
2. asked by hannah
3. 706 views
What is the limit of 1-2x^2 -2cosx + cos^2x all over x^2? please answer ASAP. TY
1. 3 answers
2. asked by monique
3. 705 views
If a 28 mLs of a 0.25 molar NaOH solution is used to titrate 14 mLs of a nitric acid to its phenolphthalein endpoint, what is
1. 1 answer
2. asked by Maddy
3. 701 views
How many grams of KOH will be needed to boil a liter of cold water?
1. 0 answers
2. asked by Liv
3. 695 views
Which one pair has the larger radius?Explain?a. Calcium atom or calcium ion b. Aluminum ion or Magnesium ion
1. 1 answer
2. asked by Anonymous
3. 676 views
Determine the molarity of sodium cations in solution when 6.21 g of sodium sulflate are mixed with 2.97 g of sodium nitrate in
1. 4 answers
2. asked by Jenni
3. 676 views
a car moving at 15 meters per second skids to a stop in 20 meters. if the car travels at 45 meters per second, how far will it
1. 1 answer
2. asked by Anonymous
3. 675 views
Find sin(θ), cos(θ), tan(θ). Assume a = 40, b = 9, and c = 41. (Do not use mixed numbers in your answers.)Okay for some
1. 1 answer
2. asked by Anonymous
3. 672 views

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