Monday

September 22, 2014

September 22, 2014

Total # Posts: 898

**Pre-algebra**

how would I solve this kind of problem 7/9-4/9=y/3?
*August 22, 2013*

**Pre-algebra**

Check? 1. 15-2 35/99 =12 64/99
*August 22, 2013*

**Science**

1. Question : A decrease in “food miles” will most likely increase the environmental impact of any given food. Student Answer: True CORRECT False Instructor Explanation: The answer can be found in Section 3.5 of your text. Points Received: 1 of 1 Comments: 2. ...
*August 21, 2013*

**Chemistry;HELP**

Volume Problems Answer the following questions. Scan and upload your questions and answers to your student section labeled Volume Volume Problems. Identify the following chemical equations by type. 1. If an electric discharge produces 500 cm3 of ozone (O3), how many cm3 of ...
*August 21, 2013*

**Chemistry;HELP**

1. A sample of gas under a pressure of 622 kPa has a volume of 233 cm3. The pressure is increased to 988 kPa, while the temperature remains constant. What volume will the gas occupy at this pressure? 2. The pressure exerted by a gas is 2.0 atm while it has a volume of 350 cm3...
*August 21, 2013*

**Social studies**

were Europeans looking for trade routes during the renaissance???
*August 20, 2013*

**Social studies**

thank you
*August 20, 2013*

**Social studies**

how did the commercial revolution contribute to the discovery of America????
*August 20, 2013*

**Chemistry Check?**

1. A sample of neon is collected at 1273.51 kPa and 12.0 oC. It has a volume of 2.25 L. What would be the volume of this gas at STP? (2.25 L) x (1273.51 kPa / 101.3 kPa) x (0 + 273.15 K) / (12.0 + 273.15 K) = 27.1 L 2.A sample of argon has a volume of 1205 cm3 when its ...
*August 20, 2013*

**Chemistry;HELP**

Correct the following samples of gases to standard temperature. (Assume pressure is constant)(STP stands for standard temp and pressure which is 273K and 101.3 kPa, you do not have to think about the pressure for these four but on the last three you will have to so T2 is 273K...
*August 20, 2013*

**Chemistry;HELP**

1. What volume will a sample of hydrogen occupy at 128.0 oC if the gas occupies a volume of 2.23 dm3 at a temperature of 0.0 oC? Assume that the pressure remains constant. (remember to change to Kelvin). 2. If a gas occupies 1733 cm3 at 10.0 oC, at what temperature will it ...
*August 20, 2013*

**Chemistry;HELP**

Help me set them up and then check my answers? Round your answer to the correct number of significant digits and show work. 1. How many grams of NaI would be used to produce a 2.0 M solution with a volume of 10.00 L? 2. What is the molarity of a 2.50 x 102 cm3 solution ...
*August 20, 2013*

**Geometry; Check answers?**

I did correct #1. It's (-1.5,0) but, I still don't know the length. Can you help? #2. How do I put it in correct form?
*August 20, 2013*

**Geometry; Check answers?**

Wait. How do I correct 1 and 2?
*August 20, 2013*

**Geometry; Check answers?**

For each graph, find (a)AB to the nearest tenth and (b)the coordinates of the midpoint of AB. 1. Coordinates are A(-9, -6) B(6,6) D=19.2 Midpoint=(1.5,-6) 2.A(-2,-2) B(8,-6) D=10.77 midpoint= (3,-4) 3. A(0,3) B(-2,-2) D=5.4 Midpoint= (-1,0.5)
*August 20, 2013*

**Geometry**

Which of the following best describes the front and back cover of a textbook when closed?
*August 20, 2013*

**Chemistry;HELP**

How did he get 15 moles? What is the molarity of a 5.00 x 102 ml solution containing 2490 g of KI? 5.00*10^2ml = 500ml = .5L KI has molar mass 166, so you have 15 moles of KI 15moles/.5L = 30moles/L = 30M
*August 20, 2013*

**Geometry, Help**

is one's midpoint answer (-1.5,-6)?
*August 20, 2013*

**Geometry, Help**

SORRY! I was squaring it. Thanks for your help.
*August 20, 2013*

**Geometry, Help**

I got 369 and divided by 2. How's you get that answer?
*August 20, 2013*

**Geometry, Help**

Is #1 184.2?
*August 20, 2013*

**Geometry, Help**

would you divide 2 by 29?
*August 20, 2013*

**Geometry, Help**

Help? I'm stuck. For each graph, find (a)AB to the nearest tenth and (b)the coordinates of the midpoint of AB. 1. Coordinates are A(-9, -6) B(6,6) 2.A(-2,-2) B(8,-6) 3. A(0,3) B(-2,-2)
*August 20, 2013*

**Geometry, Help**

1. Reasoning How does the Distance Formula ensure that the distance between two different points is positive? 2. There are two different formulas for midpoint. Is it possible to use the formula for midpoint "on a number line" when you are trying to find the midpoint...
*August 19, 2013*

**English**

Blah,Blah,Blah. Thanks for your help ........... .
*August 19, 2013*

**English**

Leprechauns and fairies from "A midsummers night dream" are very similar to each other. Leprechauns and fairies are both part of the same kingdom. Their part of a fairy kingdom. It is rare that a female leprechaun is born but, If it does happen she becomes a fairy. ...
*August 19, 2013*

**English**

Leprechauns and fairies from "A midsummers night dream" are very similar to each other. Leprechauns and fairies are both part of the same kingdom. Their part of a fairy kingdom. For example If a child is born and their child is a girl she becomes a fairy. It's ...
*August 19, 2013*

**English**

You will need to research a type of mythical creature, such as mermaids, gnomes, leprechauns, goblins, or genies. You will then write an essay comparing the creature that you researched and the fairies in A Midsummer Night's Dream. Leprechauns are very much similar to the...
*August 19, 2013*

**English**

What are some differences in the fairy's in "A Midsummer's Night Dream" from lepruchuans?
*August 18, 2013*

**Chemistry**

How'd you get 15 moles?
*August 18, 2013*

**Chemistry**

I'm dumb. I'm sorry I still don't understand.
*August 18, 2013*

**Of Mice and Men ASAP**

Hi My summer reading list is due on monday and i'm running out of time to finish this book (it has 6 chapters) I don't have the book with me anymore sadly because it wasn't my book. I wanna know if you can tell me the conflict in each chapter please please please ...
*August 18, 2013*

**Reading ASAP**

I was gonna do a summary for each chapter but it's not asking me that it's asking for a plot
*August 12, 2013*

**Reading ASAP**

I'm doing my summer reading list and I need help these are the instructions "Have notes for each chapter (or story or part of the novel—depending on how the novel is arranged) with the following points: main characters, conflict, and plot. This will help you with...
*August 12, 2013*

**Geometry, Help**

Compare and Contrast Describe the difference between saying that two segments are congruent and saying that two segments have equal length. When would you use each phrase?
*July 10, 2013*

**Geometry**

1.Explain why we use the formula AB = |a - b| to find the distance of a segment. Include why you need to subtract and why you need to take the absolute value. The formula for finding vector AB is AB = b - a where a and b are the position vectors OA and OB respectively then the...
*July 10, 2013*

**English; Help/Check.**

Thanks. Is their anyway you could give me more Ideas on adding more to this? It needs to be 3 paragraphs
*July 10, 2013*

**English; Help/Check.**

Okay.. I believe I fixed it now. Leprechauns and Fairy's; Leprechauns are fairy-like mischievous creatures in Irish folklore. They are in a form of a old man. Leprechauns have been reported to be no bigger then a small child or no bigger then a finger. If they are spotted ...
*July 10, 2013*

**English; Help/Check.**

Leprechauns and Fairy's; Leprechauns are fairy-like mischievous creatures in Irish folklore. They are in a form of a old man. Leprechauns have been reported to be no bigger then a small child or no bigger then a finger. If they are spotted by human they are granted three ...
*July 10, 2013*

**English; Help/Check.**

Leprechauns and Fairy's; Leprechauns are fairy-like mischievous creatures in Irish folklore. They are in a form of a old man. Leprechauns have been reported to be no bigger then a small child or no bigger then a finger. If they are spotted by human they are granted three ...
*July 10, 2013*

**English**

How are leprecuans different or similar to the fairies in A Midsummer Night's Dream?
*July 10, 2013*

**Language Arts**

Do you know where I can find chapter by chapter view of a book? Is a plot the same as a summary of a short story?
*July 8, 2013*

**Math**

Find the general expression of the kth nonzero term in the taylor series for f(x)=3/(1+x) (exclude any zero terms in the series when finding this general expression)
*June 19, 2013*

**Math**

Find the general expression of the kth nonzero term in the taylor series for f(x)=3/(1+x) (exclude any zero terms in the series when finding this general expression)
*June 19, 2013*

**maths**

S=1 + 2(1/5) + 3(1/5)^2 + 4(1/5)^3 +5(1/5)^4…...........infinite......... If s=a/b , where a and b are coprime positive integers, what is the value of a+b?
*June 17, 2013*

**maths**

S=1 + 2(1/5) + 3(1/5)^2 + 4(1/5)^3 +5(1/5)^4…...........infinite......... If s=a/b , where a and b are coprime positive integers, what is the value of a+b?
*June 17, 2013*

**chemistry**

Keq = product/ reactant Write the balanced equation for what you are given. 2HCl--->H2 + Cl2 I believe that's how you start off.
*May 28, 2013*

**World history; Check:P**

How did Louis XVI’s weak leadership contribute to the growing crisis in France? Louis and both his wife didn't seem to care about governing. His wife always gave him poor advice and ended to spend a lot of money gowns, jewels, gambling, and gifts, which lead France ...
*May 15, 2013*

**calculus**

The function f is given by the formula f(x)=6x^3+17x^2+4x+21/x+3 when x<–3 and by the formula f(x)=2x^2–4x+a What value must be chosen for a in order to make this function continuous at -3?
*May 3, 2013*

**7th Grade Language- Arts Ms.Sue~!**

MADDIE ARE YOU SURE sry caps
*April 24, 2013*

**Math**

Plot the points on a graph (X,Y). Start at (0,0) and move accordingly. For example, Doug is at (2,1) meaning 2 units to the right and 1 unit up.
*April 22, 2013*

**Quantum Physics**

8a- pi/3,o
*April 16, 2013*

**chemistry**

Molarity = Moles of solute (salt)/Liters of solution (salt water) Once you have moles, convert to grams using the molar mass of the salt. Next time, post a question with numbers! :P
*April 15, 2013*

**Chemistry**

Complete and balance the molecular equation, including phases, for the reaction of aqueous copper(II) chloride, CuCl2, and aqueous potassium phosphate, K3PO4. Balance the net ionic equation, including phases, for this reaction.
*April 7, 2013*

**science help ASAP please**

omg wow u people are dumb posting answers on the internet !!!!! that is cheating
*April 1, 2013*

**Math**

Mr. Green teaches band, choir, and math. This year, he has 57 students that take at least one of his classes. He teaches band to 25 students. There are 48 students who take either band or choir or both. There are 9 students who take both math and choir with Mr. Green. Use the ...
*March 27, 2013*

**English; Help..**

Fallen, by Laurn kate
*March 22, 2013*

**English; Help..**

Persuasive Writing Assignment: Imagine that you are an agent who is interested in publishing new authors. Choose any book you like and present the book to a publisher in New York. You want to be the person responsible for putting the book on the shelf. Any ideas? I need help ...
*March 22, 2013*

**Math?**

Okay. This is the question: If 130.943 g of a liquid occupy a space of 135.0 ml, what is the density of the liquid in g/cm3? And this is my answer: 0.9699481g/ml 481 is repeating
*March 22, 2013*

**Math?**

Wait! I'm a bit confused. Let me try and do the problem and you check it for me please?
*March 22, 2013*

**Math?**

How do you convert "ml" to grams. 1. 135.0ml to grams
*March 22, 2013*

**Chemistry;HELP**

I got D= 2.843081g/cm^3 ^(Repeats)
*March 22, 2013*

**Chemistry;HELP**

How would you do this problem? /: 1. Calculate the density of a material that has a mass of 52.497grams and a volume of 18.5cm^3?
*March 22, 2013*

**Chem 132**

The rate constant for this first-order reaction is 0.650 s–1 at 400 °C. A------> Products How long (in seconds) would it take for the concentration of A to decrease from 0.660 M to 0.350 M?
*March 21, 2013*

**Physics**

W=F.d W=209 * 10 cos 0degree W=2090 joule
*March 19, 2013*

**ALL subjects..**

Oh, alright. Thanks. anyways..
*March 8, 2013*

**ALL subjects..**

Hi!! Well,I'm in tenth grade And I was wondering if there are any practice test websites for the 10th grade Test.. I believe Pct? Please!! Help..
*March 8, 2013*

**Math**

Really!! Thank you so much you explained it well
*March 6, 2013*

**Math**

The price of a fan increased by 25% to $48.75. Find the original price of the fan. This is how I did it. 100/25%=400. 48.75-4.00= 44.25. I'm not sure if I'm solving it the correct way can someone help please
*March 6, 2013*

**World history; Check:P Added sentences.**

Okay. Thanks. (:
*March 1, 2013*

**World history; Check:P Added sentences.**

Write a one paragraph essay on how developments in technology influenced the rise and decline of the Assyrian Empire. The Assyrians were the first to use iron in their weapon works. They used it in spears, swords, shields and armor. They had the most advanced weapons of their ...
*March 1, 2013*

**World history; Check:P**

Thanks. @Knights. But, is that all I should have in my essay? Should I add anything? Please help?
*March 1, 2013*

**World history; Check:P**

Write a one paragraph essay on how developments in technology influenced the rise and decline of the Assyrian Empire. The Assyrians were the first to use iron in their weapon works. They used it in spears, swords, shields and armor. They had the most advanced weapons of their...
*March 1, 2013*

**World history; HELP**

Can I get some websites? Help? Please. Write a one paragraph essay on how developments in technology influenced the rise and decline of the Assyrian Empire.
*February 27, 2013*

**World history**

Pleas help? In what ways were the Indus Valley people an advanced civilization? In what ways did their civilization compare to an advanced modern civilization today?
*February 27, 2013*

**World history; HELP**

Write a opinion paper on the most significant consequences of the Agricultural Revolution. The one about 10,000 years ago. I need help. Some websites stating facts or something?Please and thank you.
*February 27, 2013*

**Physic**

A ball is thrown horizontally from a cliff at a speed of 15 m/s and strikes the ground 45 meters from the base of the cliff. How high was the cliff (rounded to the nearest meter)
*February 27, 2013*

**Physics**

Alice and Bob share a state a|++⟩+b|−−⟩, where the first qubit is Alice's and the second qubit is Bob's. Alice measures her qubit in the standard basis and sends the measurement outcome to Bob. If Bob wants a|+⟩+b|−⟩, what ...
*February 24, 2013*

**Physics**

Specify the state of each qubit after we applied the circuit. First qubit: Second qubit:
*February 24, 2013*

**Physics**

Which of the following pairs of quantum gates commute? Select all that apply. (Gates A and B commute if and only if for any input applying A and then B gives the same results as applying B and then A. This is the same as saying that the unitary transformations commute.)
*February 24, 2013*

**Physics**

Suppose we have a qubit in the state |ψ⟩. We know that if we measure it in the standard basis, the probability of getting a 0 is 79. Now, if we instead first apply a Hadamard gate and then measure the resulting qubit H|ψ⟩ in the sign basis, what is the ...
*February 24, 2013*

**Physics**

5. What is ZX applied to |0⟩? 6. What is ZX applied to H|0⟩?
*February 24, 2013*

**Physics**

Suppose we have a one-qubit unitary U that maps |0⟩ to 12|0⟩+3√i2|1⟩ and |+⟩ to 1−3√i22√|0⟩+3√i−122√|1⟩. What is U? Explicitly indicate multiplication with a * symbol. For instance, you should ...
*February 24, 2013*

**Physics**

Suppose we have a one-qubit unitary U that maps |0⟩ to 13|0⟩+2−2i3|1⟩ and |1⟩ to 2+2i3|0⟩−13|1⟩. What is U? Explicitly indicate multiplication with a * symbol. For instance, you should write 3*i+2 instead of 3i+2.
*February 24, 2013*

**Physics**

Let U=(13i3−i). What is U†? Explicitly indicate multiplication with a * symbol. For instance, you should write 3*i+2 instead of 3i+2.
*February 24, 2013*

**Geometry**

What is used to show that an assumption is false? A. inductive reasoning B. counter example C. pattern D. conjecture ANswer: A
*February 20, 2013*

**World history; Check:P**

Can you help me? Show me some websites? Yes, and it was the 10,000 years agricultural revolution. I had some facts I guess from the other agricultural.
*February 19, 2013*

**World history; Check:P**

Write a opinion paper on the most significant consequences of the Agricultural Revolution. This is about 10,000 yearsago. One of the greatest consequence was that the population increased. The increase of population lead to the need of more clothing. People who were farmers ...
*February 19, 2013*

**Physics**

What is the inner product of 13√|0⟩+2√3√|1⟩ and |+⟩? Rewrite 13√|0⟩+2√3√|1⟩ in the sign basis.
*February 17, 2013*

**Physics**

A two-qubit system was originally in the state 34|00⟩−5√4|01⟩+14|10⟩−14|11⟩, and then we measured the first qubit to be 0. Now, if we measure the second qubit in the standard basis, what is the probability that the outcome is 0? ...
*February 17, 2013*

**Physics**

Suppose we have two qubits in the state α|00⟩+β|11⟩. (a) If we measure the first qubit in the sign basis, what is the probability of seeing a +? (b) What is the resulting state of the second qubit in that case? Use a and b to denote α and β ...
*February 17, 2013*

**Physics**

Now note that the following becomes good approximations as θ→0: sinθ≈θ sin2(π4−θ)≈12−c⋅θ (where c is some constant.) Use these approximations to estimate the probability of success of the two measurements as x&#...
*February 17, 2013*

**Physics**

We have a qubit in the state |ϕ⟩=3√2|0⟩+12|1⟩, which we want to measure in the {cosθ|0⟩+sinθ|1⟩,sinθ|0⟩−cosθ|1⟩} basis. In order for the two possible outcomes to be equiprobable, what should ...
*February 17, 2013*

**Physics**

Suppose we have two qubits in the state α|00⟩+β|11⟩. (a) If we measure the first qubit in the sign basis, what is the probability of seeing a +? (b) What is the resulting state of the second qubit in that case? Use a and b to denote α and β ...
*February 16, 2013*

**Physics**

A two-qubit system was originally in the state 34|00⟩−5√4|01⟩+14|10⟩−14|11⟩, and then we measured the first qubit to be 0. Now, if we measure the second qubit in the standard basis, what is the probability that the outcome is 0?
*February 16, 2013*

**Physics**

Factor 122√|00⟩−122√|01⟩+3√22√|10⟩−3√22√|11⟩ into (a|0⟩+b|1⟩)(c|0⟩+d|1⟩), where |a|2+|b|2=1 and |c|2+|d|2=1. What is the value of |a|?
*February 16, 2013*

**Physics**

If the first qubit is in the state 13√|0⟩+2√3√|1⟩ and the second qubit is in the state 2√3√|0⟩+13√|1⟩, what is the state of the composite system?
*February 16, 2013*

**Physics**

We have a qubit in the state |ϕ⟩=3√2|0⟩+12|1⟩, which we want to measure in the {cosθ|0⟩+sinθ|1⟩,sinθ|0⟩−cosθ|1⟩} basis. In order for the two possible outcomes to be equiprobable, what should ...
*February 16, 2013*

**Physics**

Rewrite 13√|0⟩+2√3√|1⟩ in the sign basis.
*February 16, 2013*

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