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Questions Asked on May 2, 2011

What intermolecular force exists between the CH3CH2CH3 , CH4 , or the "CH3CH2"end of the ethanol molecule and the water
1. 3 answers
2. asked by ChemLover
3. 7,966 views
You wish to know the enthalpy change for the formation of liquid PCl3 from the elements shown below.P4(s) + 6 Cl2(g)--> 4
1. 1 answer
2. asked by Kat
3. 6,063 views
A solution is made by mixing exactly 500 mL of 0.178 M NaOH with exactly 500 mL of 0.100 M CH3COOH. Calculate the equilibrium
1. 5 answers
2. asked by Martina
3. 5,679 views
Based on the types of bonding in the following compunds, explain why you would expect: 1) calcium chloride (CaCl2) to be soluble
1. 1 answer
2. asked by James
3. 4,057 views
Electricity may be generated by rotating a loop of wire between the poles of a magnet. The induced current is greates when:a.Pla
1. 3 answers
2. asked by Annie
3. 2,695 views
An airplane heads due south with an air speed of 480km/h. Measurements made from the ground indicate that the plane's ground
1. 2 answers
2. asked by Anonymous
3. 2,692 views
howw would you define the speaker's love for annabel lee ?would you want to feel or be the object of such a love ? explain why
1. 1 answer
2. asked by ana
3. 2,604 views
$3,000,000,000,000,000 how much is this in words?
1. 12 answers
2. asked by sammy
3. 2,471 views
A 300. kg roller coaster car is traveling at a constant speed of 15 m/s over a hill with a radius of curvature of 30. m.b. What
1. 2 answers
2. asked by robert
3. 2,272 views
why does the equation x^2=-9 has no real solutionwhy does the equation x^2 = 9 has two solutions
1. 1 answer
2. asked by Wendy Q
3. 2,054 views
A tennis player places a 55 kg ball machine on a frictionless surface. The machine fires a 0.065 kg tennis ball horizontally
1. 2 answers
2. asked by em
3. 1,896 views
What is the pressure exerted by a .500 mol sample of nitrogen in a 10.0L container at 20C?
1. 2 answers
2. asked by Morgan
3. 1,875 views
How many ways can a committee of 4 people be selected from a group of 10 people?
1. 1 answer
2. asked by ALAINI
3. 1,791 views
Hi... well anyways so I am in 7th grade but I'm taking 8th grade science...I think...I know for sure that I am in Accelerated
1. 6 answers
2. asked by Pate
3. 1,786 views
Supply the missing atomic symbol to complete the equation for the following nuclear fission reaction.1/0n +235/92U ------>
1. 1 answer
2. asked by Blaze
3. 1,767 views
A couple purchasing a home budget $1700 per month for their loan payment. If they have $15,000 available for a down payment and
1. 1 answer
2. asked by Anonymous
3. 1,715 views
A glucose (C6H12O6) solution is 2.5% glucose by mass. If the density of thesolution is 1.10 g/mL, what is the molarity of
1. 5 answers
2. asked by Samantha
3. 1,620 views
A 10.0-mL solution of 0.30 M NH3 is titrated with a 0.100 M HCl solution. Calculate the pH after the following additions of the
1. 3 answers
2. asked by Martina
3. 1,611 views
A tennis player places a 55 kg ball machine on a frictionless surface. The machine fires a 0.065 kg tennis ball horizontally
1. 1 answer
2. asked by em
3. 1,536 views
10% (m/m) Sodium Hydroxide solution, NaOH(aq) is used to break down wood fibre to make paper.A) What mass of the solute is
1. 1 answer
2. asked by Saman
3. 1,526 views
Lakes that have been acidified by acid rain can be neutralized by the addition of limestone how much limestone in kilograms
1. 2 answers
2. asked by Jarred
3. 1,526 views
Two charges are separated by a distance d = 5 m. The charge q1 has a charge of q1= 7.0 µC (microcoulombs) and q2 has a charge
1. 2 answers
2. asked by marissa
3. 1,401 views
A beam, B1, of mass M1 = 0.6887 kg and length L1=1 m is pivoted about its lowest point at P1. A second beam, B2, of mass
1. 0 answers
2. asked by Catherine
3. 1,395 views
Clathrate hydrate research is done by Professor Ken Janda here at UC Irvine. Look up clathrate hydratewith a general search of
1. 1 answer
2. asked by CHEMBOB
3. 1,369 views
What is the unit cell of calcium sulfide?anti-fluorite cesium cholride diamond fluorite graphite rutile sodium chloride zinc
1. 2 answers
2. asked by Lala
3. 1,333 views
Mr. Badger bought 12 pens every month until their price rose to 15 cents each. Now he can only afford to buy 10 pens at the same
1. 1 answer
2. asked by Crissy XD
3. 1,325 views
A dentist has a 5.00 L cylinder of N2O at 20.0 atm and 25 degrees C what is the mass of gas in the cylinder
1. 1 answer
2. asked by tadd
3. 1,309 views
how much heat is required to melt an ice cube that is 4.2 cm x 2.1 cm x 2.9 cm? The density of ice is 0.92 g/cm3
1. 1 answer
2. asked by Sam
3. 1,300 views
A 120-V motor has mechanical power output of 3.20 hp. It is 81.0% efficient in converting power that it takes in by electrical
1. 1 answer
2. asked by iva
3. 1,282 views
An executive invests $24,000, some at 7% and some at 5% annual interest. If he receives an annual return of $1600, how much is
1. 1 answer
2. asked by Maerika
3. 1,277 views
An object of mass 1.5 kg is placed on a rough horizontal surface, as shown in Figure 1. Force F acts on the object. When the
1. 2 answers
2. asked by mimi
3. 1,273 views
3Ca(NO3)2(aq)+2Na3PO4(aq)->Ca3(PO4)2(s)+6NaNO3(aq)(a) the grams of Ca3(PO4)2 that can be obtained from 126 mL of 0.750 M
1. 0 answers
2. asked by Sam
3. 1,269 views
You have a tuning fork of unknown frequency. When your ring it alongside tuning fork with frequency of 360Hz, you hear beats at
1. 2 answers
2. asked by silly
3. 1,263 views
which of the following properties of a sound wave determines its pitch: wavelength, speed, amplitude, or frequency?Plese show
1. 1 answer
2. asked by silly
3. 1,244 views
can you please help me with compare and contrast Lans, Wans, Cans,Mans, Hans
1. 1 answer
2. asked by belinda
3. 1,185 views
A truck traveling at a constant speed of 30.6 m/s passes by a police car which is at rest. The police officer catches up to the
1. 0 answers
2. asked by alya
3. 1,183 views
OK, I know, I'm postin this way too many times but I'm halfway there now....Newton’s Law of Gravity specifies the magnitude of
1. 2 answers
2. asked by Abi
3. 1,169 views
Sound waves in iron have a speed of about 5100 m/s. If the waves have a frequency of 400 Hz, what is their wave length?I am
1. 1 answer
2. asked by silly
3. 1,125 views
how much heat is required to melt an ice cube that is 4.2 cm x 2.1 cm x 2.9 cm? The density of ice is 0.92 g/cm3
1. 0 answers
2. asked by Sam
3. 1,125 views
Hi, I'm writing this essay on whether it is better to know the truth or it is not. And I said it is better to know because the
1. 3 answers
2. asked by Kat
3. 1,120 views
If acoin roll at 1.5m/s and later rolls at 4.5m/s with an acceleration of 2 meters per squared second how long will it take to
1. 0 answers
2. asked by Clueless
3. 1,111 views
what is the theme in the poem phenomenal women by maya angelou
1. 2 answers
2. asked by lrihj
3. 1,106 views
You tie a battery powered, fixed-frequency buzzer to the end of a string and swing it around in a large horizontal circle. Your
1. 0 answers
2. asked by silly
3. 1,096 views
what is self delusion? the definitions online are very confusing..Can someone explain it to me in simpler terms. Also would
1. 5 answers
2. asked by aria
3. 1,091 views
500 grams of water at 0 degrees C was heated to a boiling in a large pot. how much energy was needed? what was the temperature
1. 1 answer
2. asked by amanda
3. 1,076 views
if you kick a football at a 30 degree angle, how many seconds is it in the air, and how high does it go
1. 0 answers
2. asked by johnny
3. 1,073 views
In chemistry, we did a lab using zinc as the standard and forming galvanic cells with it and another solution. We determined the
1. 1 answer
2. asked by Sam
3. 1,064 views
Decide on what substitution to use, and then evaluate the given integral using a substitution. HINT [See Example 1.] (Round your
1. 3 answers
2. asked by Ashley
3. 1,049 views
Sorry to repost this, again, but I still don't understand.Newton’s Law of Gravity specifies the magnitude of the interaction
1. 0 answers
2. asked by Abi
3. 1,048 views
Default risk) You buy a very risky bond that promises a 9.5% coupon and return of the$1,000 principal in 10 years. You pay only
1. 0 answers
2. asked by Anonymous
3. 1,040 views
Sorry to repost this, again, but I still don't understand.Newton’s Law of Gravity specifies the magnitude of the interaction
1. 1 answer
2. asked by Abi
3. 1,033 views
A box 5 m long, 2 m wide, and 2 m high applies 12 Pa of pressure to the table that it is resting on. How much force does the box
1. 1 answer
2. asked by Anonymous
3. 1,025 views
A developer is interested in a parcel of land for a small mixed use development. Similar developments are worth $15 million and
1. 0 answers
2. asked by Courtney
3. 1,021 views
A rocket carrying a weather satellite is launched. As it moves through space, the rocket is tracked by two tracking stations
1. 2 answers
2. asked by Mhy
3. 1,010 views
Compute f'(e) where f(x)=3^(xlnx)
1. 1 answer
2. asked by Morris
3. 1,003 views
Sodium carbonate can be made by heating sodium bicarbonate:2NaHCO3(s) �¨ Na2CO3(s) + CO2(g) + H2O(g) Given that ƒ¢H�‹ =
1. 1 answer
2. asked by Nicole
3. 992 views
A mixture of Nitrogen and Argon gases in a balloon exerted a pressure of 2.55 atm. Given that there were 1.0 g nitrogen gas and
1. 1 answer
2. asked by Mandy
3. 988 views
The Apollo 8 mission in 1968 included a circular orbit at an altitude of 111 km above the Moon’s surface. What was the period
1. 1 answer
2. asked by Cora
3. 985 views
-1 minus 8 equals? is 7 the correct answer
1. 3 answers
2. asked by cassandra
3. 980 views
What does the term "ethics" mean? With what ethical standards must students comply? Are ethical standards higher for those in
1. 1 answer
2. asked by Brea
3. 972 views
what do they mean? could you please change into a modern language?ROM: If I profane with my unworthiest hand This holy shrine,
1. 1 answer
2. asked by kim
3. 970 views
can someone please explain how to indicate where a label appears in a product? for example:where the label appears in
1. 0 answers
2. asked by ana
3. 953 views
How will the current in a wire change as the wavelength of light changes?I have no idea how to do this.
1. 0 answers
2. asked by ashley --- HELP PLEASEE!!!
3. 952 views
How do I solve a problem like this:p^3m^2/7 + p^2m^3/21 - p^4m/14 Can you please help?
1. 1 answer
2. asked by Diana
3. 947 views
If molly tosses a coin and rolls a number cube, what is the probability of the coin landing heads up and the number cube
1. 5 answers
2. asked by jill
3. 942 views
A 50 lb bar rotates clockwise 2 rad/s. The spring attached to its end always remains vertical due to the roller guide at C. If
1. 0 answers
2. asked by help please
3. 936 views
Given that 2x + 7 greater than 11, x cannot be equal to?
1. 1 answer
2. asked by Tony
3. 935 views
If a stone is tossed from the top of a 250 meter building, the height of the stone as a function of time is given by h(t) =
1. 1 answer
2. asked by carol
3. 928 views
Jessica weighs 540 Newtons, According to Newton's 3rd law, if the Earth pulls on Jessica 540 N, then Jessica pulls on the Earth
1. 1 answer
2. asked by Kelli Kenyon
3. 925 views
In 10-15 lines critically discuss 5 ways in which the human or environmental problem impacts on the community
1. 28 answers
2. asked by Katlego
3. 917 views
A Norman window has the shape of a rectangle surmounted by a semicircle (see the figure below). If a Norman window is to have a
1. 2 answers
2. asked by Anonymous
3. 909 views
Name two institution organization that are involved in supporting or giving redress to these disaster.Eplain how these
1. 31 answers
2. asked by Mahlatse
3. 884 views
Hello, I need this question explained. You don't have to give me the answer ,but I just need a break down ..in order to know
1. 2 answers
2. asked by Natalie
3. 882 views
assume that the spool is a solid cylinder of radius 0.5m and a mass 5.0kg, and m=5.0kg. Find the angular speed of the spool
1. 0 answers
2. asked by Anonymous
3. 881 views
Data:freezing point of pure cyclohexane: 6.0 degrees celcius Freezing point of unknown soluton: 1.6 degrees celcius weight of
1. 1 answer
2. asked by Tina
3. 880 views
Two point sources produce waves of the same wavelength and are completely out of phase (that is produces a crest at the same
1. 1 answer
2. asked by silly
3. 877 views
A farmer has 200 acres of land suitable for cultivating crops A, B and C. The cost per acre of cultivating crop A, crop B and
1. 1 answer
2. asked by TALOFA
3. 869 views
3.5 X 10________ 7 x 10^-9
1. 1 answer
2. asked by john
3. 868 views
HCl(g) HBr(g) HF(g)Which of these gases has the fastest average speed? Which has the highest average kinetic energy?
1. 0 answers
2. asked by Mandy
3. 864 views
Calculate the magnitudes of the gravitational forces exerted on the Moon by the Sun and by the Earth when the two forces are in
1. 0 answers
2. asked by Bon Oncle
3. 863 views
What are the steps of the order of operations? Why is it important that you follow the steps rather than solve the problem from
1. 1 answer
2. asked by Sammyg
3. 861 views
How does a search engine work?List the four main parts of an e-mail header.
1. 1 answer
2. asked by jason
3. 850 views
a nickle is what percent of a dollar
1. 2 answers
2. asked by Tracy
3. 847 views
a bootlenose dolphin jumps out of the water. the path the dolphin travels can be modeled by h=-0.2d^2+2d, where h represents the
1. 1 answer
2. asked by bob HELP NEEDED HELP NEEDED HELP NEEDED
3. 834 views
A homeowner planning a kitchen remodeling can afford a $200 monthly payment. How much can the homeowner borrow for 3 years at
1. 1 answer
2. asked by Anonymous
3. 827 views
name att least 3 aspects that contribute through visual means. Give examples?
1. 2 answers
2. asked by tiffany
3. 822 views
we have a cube shaped box with a volume of 125 cubic centimeters. what is the least amount of wrapping paper you would need to
1. 1 answer
2. asked by lynn
3. 820 views
Calculate the magnitudes of the gravitational forces exerted on the Moon by the Sun and by the Earth when the two forces are in
1. 0 answers
2. asked by Bon Oncle
3. 796 views
The resultant vector of two particular displacement vectors dose not equal the sum of the magnitudes of the individual vectors.
1. 0 answers
2. asked by Becky
3. 795 views
A particular guitar string is supposed to vibrate at 192 Hz, but it is measured to actually vibrate at 212 Hz. By what percent
1. 0 answers
2. asked by ben
3. 794 views
To determine the mass percentage of an iron sample, the dissolved sample [iron exists at the start as iron(II)] was titrated
1. 0 answers
2. asked by Anna
3. 790 views
The Meredith Corporation issued $100 par value preferred stock 10 years ago. The stock provided an 8 percent yield at the time
1. 0 answers
2. asked by Sam
3. 789 views
The disney Golf classic starts with 64 golfers. the golfes form pairs and each pair plays amtch. the losers drop out nad the
1. 2 answers
2. asked by Alejandro
3. 784 views
what is the adverb in this sentence: pete sometimes pretends he is a strong, silent cowboy.
1. 1 answer
2. asked by nancy
3. 770 views
Sorry to repost this, again, but I still don't understand.Newton’s Law of Gravity specifies the magnitude of the interaction
1. 2 answers
2. asked by Abi
3. 762 views
Cry, the Beloved Country refers at various points to the fear that exists in South African society. According to the novel, what
1. 1 answer
2. asked by bob
3. 747 views
calculate the pH of a 1.25 x 10^-3 M HNO3 solution
1. 1 answer
2. asked by kathy
3. 738 views
Calculate the magnitudes of the gravitational forces exerted on the Moon by the Sun and by the Earth when the two forces are in
1. 1 answer
2. asked by Bon Oncle
3. 734 views
how do i work 2x+3[4-(3x-7)]
1. 1 answer
2. asked by kyisha
3. 731 views
What would happen the the wavelength of an organ pipe if you fill it with helium instead of air? What would happen to the
1. 1 answer
2. asked by silly
3. 729 views

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