Saturday

August 29, 2015
Total # Posts: 273

**Chemistry**

The reaction of aqueous barium hydroxide and aqueous sodium sulfate is represented by the balanced net ionic equation. Ba2+(aq) + SO42-(aq) → BaSO4(s) Give the balanced ionic equation for the reaction. Include the states.
*January 29, 2010*

**math**

is the fraction -(1/5) the same as -1/5 or the same as 1/-5. thank you.
*January 25, 2010*

**Physics**

A race driver has made a pit stop to refuel. After refueling, he leaves the pit area with an acceleration whose magnitude is 6.0m/s 2 . After 4.0s he enters the main speedway. At the same instant, another car on the speedway and traveling at a constant speed of 70 m/s ...
*January 6, 2010*

**math**

forgot to write it, the school sells 370 tickets
*January 1, 2010*

**math**

A school sells tickets for a show, (a) adult tickets and (c) child tickets. 1) each adult ticket costs $8 and each child ticket costs $5. the total takings are 2300. Write an equation to represent this information. 2) solve algebraically the simultaneous equations to find the ...
*January 1, 2010*

**history**

for my history homework i need to make a leaflet or poster demonstrating different attitudes to war. im not sure what to do. i was going to make a poster with good and bad points. does this sound right? thanks:)
*November 15, 2009*

**home economics**

what happens to bacteria between tempretures five degrees and sixty three degrees
*November 4, 2009*

**mathematics**

in f(x)=ln(x/x-1) how would you write an exporession for f^-1(x), where f^-1(x) denotes the inverse of f(x)
*July 19, 2009*

**mathematics**

sin(theta)= 1/4 and (pie/2)<theta<pie what would be the value of cos(theta)
*July 18, 2009*

** math**

the domain and range of y=1/(x-2)
*July 16, 2009*

**algebra**

thank you
*April 29, 2009*

**algebra**

inverse of y=(x+6)^3+3
*April 29, 2009*

**CHEM**

Calculate the equilibrium constant for the weak base CH3NH2, if a solution of the base with an initial concentration of 7.05×10-4 M has a [CH3NH3+] of 0.000379 M (make an exact calculation assuming that initial concentration is not equal to the equilibrium concentration...
*April 26, 2009*

**english**

i need an 8 letter word with only the consonant N and it is used 4 times
*March 10, 2009*

**algebra 2**

simplify: y = 5x + 3 (6x^2 - 2x)
*February 26, 2009*

**chemistry**

If an element has three electrons in its outmost evergy level, what charge would most likely form on an ion from this element?
*January 10, 2009*

**math**

Graph the function. y=-1.6(6)^x What is the domain and range?
*December 31, 2008*

**science**

How can one earthquake cause anotehr one?
*December 17, 2008*

**math**

It is supposed to be a matrix. 2, 1 -3, 4 but i donot know how to put the brackets. i used commas to seperate the numbers
*December 6, 2008*

**math**

Using the inverse of: 2 1 -3 4 Find 2x+y=2 -3x+4y=1
*December 6, 2008*

**math**

it is supposed to be 0, 1 1, 0 not 01 and 10. sorry
*December 6, 2008*

**math**

Let B= 0 1 1 0 Find B if it is to the negative one power. (Its supposed to be a matrix, but I dont know how to write the brackets on the computer)
*December 6, 2008*

**History**

Thank you for your help!
*October 23, 2008*

**History**

One main difference between the Articles of Confederation and the U.S Constitution was that the Articles were very weak and the people had more power than the government while the Constitution gave more power to the government. Are there any other main differences? I ...
*October 23, 2008*

**history**

why were the romans so well behaved when they were at soldier school
*October 8, 2008*

**french**

I have to write a paragraph in french about who i am where i live and what pets i have,my name is Harry White I am 12 years old I live in Buckingham and have 2 dogs 5 cats how on earth do I write that in french
*October 5, 2008*

**chemistry**

24g CO2 x (1mol/44.01g) x (32.3 kj/1mole) = 17.6 kj
*September 7, 2008*

**Biology**

What are the steps and how many in the scientific method?
*September 2, 2008*

**Geometry**

I am trying to help my daughter and need to relearn this. I need to understand number patterns and inductive reasoning. like one of the questions are 3,5,11,29,83,245,? any help would be great. Agreatful dad
*August 14, 2008*

**spanish/ social studies**

hi i need websites that may help answer the following question how does the evironment, climate, and terrain effect the interations between man and nature in bolivia, paraguay, and uruguay?
*June 4, 2008*

**french/francais**

Many thanks for your help. I will go to the mall later and buy a new french/english dictionary.
*April 26, 2008*

**math**

can you solve this equation by using simultaneous equations and can you write the method please? Sarah and Louise have a combined age of 24. Six years ago Sarah was triple Louise's age. What is Sarah and Louise's ages now. Let Sarah be x and Louise be y. thankyou Harry
*April 10, 2008*

**Opinion..I need it for my paper**

question 1 it's had a negative impact on the sport question 2 no they do not they are just a parade of shallow plastic barbies
*April 9, 2008*

**ENGLISH**

Please tell me i really need to know this
*March 26, 2008*

**ENGLISH**

None of them worked *sob sob*. How can i solve this?
*March 26, 2008*

**ENGLISH**

I REALLY NEED HELP ON THIS. I WOULD BE GRATEFUL IF SOMEBODY COULD FIGURE IT OUT: A A A AIRBORNE AND AND AND AND AND AND BECOMES BILLS CO2 CONSTRUCTION CONVERSION DECK DISRUPTIVE DUST DUSTY EXPENSIVE FAR GO HEATING IN INSULATES LESS LOFT LOFT MOISTURE ONE OUT PERFECT POLLUTON ...
*March 26, 2008*

**geography**

SOUTH KOREA – HERE ARE SOME RIVERS: BUKHAN RIVER CHEONGGYECHEON DONNGANG RIVER HAN RIVER HYEONGSAN RIVER MIRYANG RIVER SEOMJIN RIVER HERE ARE SOME MOUNTAINS: HALLASAN – 1950M BANGTAESAN – 1444M UNJANGSAN – 1120M WOLCHULSAN - 812M GWANGGYOSAN – 582M (I ...
*March 26, 2008*

**geography**

HOPE THAT HELPED =)
*March 26, 2008*

**geography**

SOME RAILWAYS OF SOUTH KOREA: Gaya Line Bukjeonju Line Yeocheon Line Gyeongbu Line Gyeongbu Line (KTX) Gyeongui Line Seoul Gyowoi Line Gyeongin Line Gyeongwon Line Gyeongchun Line Janghang Line Chungbuk Line Honam Line Honam Line (KTX) Jeolla Line
*March 26, 2008*

**geography**

i will sure try my best. Let me start it =)
*March 26, 2008*

**physics**

Angle's actually 56 degrees...
*March 7, 2008*

**Physics**

The question is : (a) what is the lenght of the cord he should use (b) what is the maximum acceleration he will experience
*February 29, 2008*

**Creativeness**

You dont want junk on your bunk-er right? Then i dont think mother nature wants that either. ^.^ Summer cleaning makes bees singing. Beach Reek, coming to a town near you. Mostly slogans hopes that helps though.
*December 3, 2007*

**algebra 2**

found it set it up wrong was the problem :)
*December 3, 2007*

**algebra 2**

consecutive odd integer problem find two odd integers the sum of whose squares is 130. (sq)=squared let x= 1st odd int let x+2=2nd odd int (2x+2)(2x+2)=130 4x(sq) + 4x+ 4x +4=130 4x(sq) + 8x -126= 0 2(2x(sq)+4x-63)=0 My question: the two numbers to factor the equation. pair of...
*December 3, 2007*

**algebra 2**

the two numbers to factor the equation. pair of #s that multiplies to -126 and the same pair that adds to a 4.
*December 3, 2007*

**algebra 2**

consecutive odd integer problem find two odd integers the sum of whose squares is 130. (sq)=squared let x= 1st odd int let x+2=2nd odd int (2x+2)(2x+2)=130 4x(sq) + 4x+ 4x +4=130 4x(sq) + 8x -126= 0 2(2x(sq)+4x-63)=0 My question: WHAT ARE THE TWO DARN #s!!!
*December 3, 2007*

**reading**

i need one more reason...other then downloading is illegal and that people are no longer buying CDs so stores might start to close and singers won't get paid as they used to for their CDs
*October 24, 2007*

**reading**

thanks but i need other reasons....i can't think of any either..so i really need help :(
*October 24, 2007*

**reading**

Listening to a CD has been the method of listening to music for the last 20 years. Now downloading on Itunes and sharing MP3 files has become the wave of the future. Do you think this technology is a revolution and advancement in music or is it a downfall of the music industry...
*October 24, 2007*

**Biology**

Zucchini cores placed in sucrose solutions at 27oC resulted in the following percent changes after 24 hours: % change in mass [Sucrose] 20 distilled water 10 0.2 M -3 0.4 M -17 0.6 M -25 0.8 M -30 1.0 M Graph the results and find the molar concentration of solutes within the ...
*October 11, 2007*

**economics**

name ten countries using different techniques in industries
*September 25, 2007*

**Government/Economics**

The bank of the UNited States is: A. U.S. Bank B. First National Bank C. Bank of America D. Seafirst E. None of the Above If anything, the bank of the U.S. would be the Federal Reserve. I would go with E There were in actuality two different Banks of the United States. The ...
*June 14, 2007*

**math**

Hi. Please help me with this?: Suppose you start a home business typing technical research papers for college students. You must spend $3500 to replace your computer system. Then you estimate the cost of typing each page will be $.02. Write a rational function modeling your ...
*April 28, 2007*

**algebra**

Find the points of discontinuity and any holes. y=x^2-1/(x^2+3x+2) please and thank you y =(x^2-1)/((x+1)(x+2)) =(x-1)/(x+2) we cancelled the (x+1)/(x+1) which is 0/0 for x=-1 so in our simplified expression when x=-1 y = -2 There is a "hole" at (-1,-2) in the final ...
*April 27, 2007*

**algebra**

How do you solve 1/16=64^(5x-4)? thank you Notice that 16 and 64 are both powers of 2. 2^-4 = 2^6(5x-4) take log base 2 of each side.. -4=6(5x-4) solve for x wow, okay thanks!!! so its -.93?
*April 22, 2007*

**Science**

Genetic drift results in a change in gene frequencies because a. gene flow within the population is less than gene flow between populations. b. reproduction is non-random within the population c. the population size is so small that chance occurrences can alter gene ...
*March 12, 2007*

**Precalculus**

Question Details: Finding Regression for each set of data & finding best fit equation for each set of data: Data 1: X: 1 2 3 4 5 Y: 3.1 12.1 20.7 33.9 50.8 Data 2: X: 1 2 3 4 5 Y: 1.16 3.46 5.11 5.98 6.75
*March 11, 2007*

**Physics/Math**

can anyone explain this problem?
*February 12, 2007*

**Physics**

does anyone know what the rate of sound waves is for 12.6hz? Never mind got it
*January 24, 2007*

**Climate Graphs**

i need a climate graph for japan now plz my teacher will kill me plz plz plz
*January 13, 2007*

**Physics**

How many years would it take the planet to orbit the sun. How do you calculate. All I have is, that the planet is 97 times farther from sun than earth or 97 Astronomical units Using Kepler's Law you find that the anser is 97^(1.5) years. You can estimate this without using...
*December 29, 2006*

**Physics**

How do you calculate. How many years would it take the planet to orbit the sun. All I have is, that the planet is 97 times farther from sun than earth or 97 Astronomical units Use Kepler's Third Law. If you have never heard of it, read http://csep10.phys.utk.edu/astr161/...
*December 29, 2006*

**Physics**

A 3.00 kg object with an intial velocity of + 5.00 m/s in the postive X direction collides with and sticks to a 2.00 kg object with an intial velocity of -3.00 m/s in the negative Y direction. Find the final componet of velocity of the composite object. Use the conservation of...
*December 11, 2006*

** chemistry**

A hydrate of strontium choloride contains 40.54% water. What is the formula of the hydrate ? SrCl2*xH2O. H2O = 40.54% SrCl2 = 100 - 40.54 = 59.46% Take 100 g sample. This gives us 59.46g SrCl2 and 40.54g H2O. Convert to mols. mols SrCl2 = 59.46/158.5 = 0.375 mols H2O = 40.54/...
*November 26, 2006*

**Work energy**

Question Details Three masses m1= 5.0 kg ; m2= 10.0 kg ; m1= 15.0 kg are attached by a strings over frictionless pulleys. The horizontal surface exerts a force of friction of 30N on m2. If the system is released from rest, use energy concepts to find the speed of m2 after it ...
*November 19, 2006*

**spanish**

Could someone please tell me what the word of 'pocket' as in 'pants pocket' is in Spanish? I used a translator, but I thought there was another word for it. ¿Cómo se dice 'pocket' en Español? Thanks in advance. :) El (casilla, ...
*November 16, 2006*

**social studies**

that is not the right answer.
*November 11, 2006*

**chemistry**

write the equation for copper(II) sulfate pentahydrate and ammonium sulfate forming: Cu(NH4)2(SO4)2*6H2O not sure how to balance it Check your question very carefully. Is this a question given to you by a teacher? yeah it is in a lab CuSO4.5H2O + (NH4)2SO4 >>Cu(NH4)2(SO4...
*November 6, 2006*

**Physics newton**

A rocket weighs 1 x10^7 N while on the surface of the earth. The ignition of its engines results in a lift off force of 1.5 X 10^7 N a) what is the mass of the rocket. b) what is its acceleration at lift -off c)How fast will it be moving if it acceleartion at this rates for 10...
*November 5, 2006*

**Physics Newton law**

A 10O0Kg elevator is hoisted upward from rest by a cable. In the first two seconds there is an 1100N tension force in the cable hoisting the elevator. What is the speed after two seconds and how far has it travelled ? Get the acceleration first. Tension=mg + m*acceleration. ...
*November 5, 2006*

**Math**

Why can't the slope of a line be expressed as a decimal or a fraction? The slope of a line should be expressed as a fraction. The formula is Rise over Run. Rise is how much further up u go and run is how much further across do u go. Does that answer your quetion? My math ...
*October 27, 2006*