Monday
October 20, 2014

Posts by Samantha


Total # Posts: 1,339

3rd grade
it's 40 and it is in the tens place
October 10, 2010

chemistry
A solution contains 4.46 g KCl in 178 mL of solution. The density of the KCl solution is 1.11 g/ml. What is the percent (m/m) for the potassium chloride solution?
October 9, 2010

chemistry
how many milliliters of 6.00 M HCl are required to react with 60.0 ml of 1.96 M Al(OH)3? Al(OH)3(s)+3HCl(aq)-->AlCl3(aq)+3H2)(aq)
October 8, 2010

math
in square ABCD, the measure, in inches of AB is 3x+2 and BC is x+12. What is the number of inches in the length of DC ?
October 4, 2010

calculus
Prove that cos(sin inverse x) = square root ( 1-x^2)
September 29, 2010

calculus
Prove that cos(sin inverse x) = square root ( 1-x^2)
September 29, 2010

Physics
a girl jumps off a high diving platform with a horizontal velocity of 2.77m/s and lands in the water 1.2s later the acceleration of gravity is 9.8m/s squared how high is the platform and how far from the base of the platform does she land?
September 28, 2010

11th grade
1.25/X = 82/100 82X = 124 82X/82 + 124/82 = X = 1.5424 Check: 0.01524 * 82 = 1.24968 = 1.25
September 26, 2010

Math
If light travels 10,000 km in 3.3 x 10-2 sec, how long will it take light to travel one meter.
September 21, 2010

Math
I think its like this... 3 to the second power is 3x3 which equals 9, but 3x2 equals 6 which is multiplication and has nothing to do with the powers and stuff. Its kinda weird at first but you will get used to doing it right.Another example is 3 to the 5th power. 3x3x3x3x3. ...
September 21, 2010

english
we are doing one about how to kill a mocking bird (the book was really good)
September 21, 2010

english
i am doing a book report and i havent done one since the 5th grade and now i am in 7th HELP!!!!!!!!!!!!!!!!!!!!!!!!!
September 21, 2010

english
that means if you do something good for someone later on you will rewarded
September 21, 2010

Chemistry
Well Ms. Sue, both Johannie and I were using this computer and I didn't realize her name was still on the name line.
September 20, 2010

Chemistry
The solution forms because of that?
September 20, 2010

Chemistry
The lattice energy is greater in magnitude than the heat of hydration. but what about the Last question?
September 20, 2010

Chemistry
When ammonium chloride is dissolved in water, the solution becomes colder. What can you say about the relative magnitudes of the lattice energy of ammonium chloride and its heat of hydration? Why does the solution form? What drives the process?
September 20, 2010

7th grade
well pretend that you and you sis or brother were spliting the last cookie in half soo the earth is the cookie and the hemisphere is half of the earth.
September 20, 2010

7th grade
my teacher is making us do a current even outside of the us and i STILL can't find a good curren event
September 17, 2010

math
18x^2 minus x minus 4 simplified.
September 13, 2010

Intermediate Algebra
Evaluate the exponential function for three positive values of x, three negative values of x, and at x=0. Show your work. Use the resulting ordered pairs to plot the graph; State the domain and the range of the function. f(x) = e^x
September 10, 2010

Intermediate Algebra
Evaluate the exponential equation for three positive values of x, three negative values of x, and at x=0. Transform the second expression into the equivalent logarithmic equation; and evaluate the logarithmic equation for three values of x that are greater than 1, three values...
September 10, 2010

Geometry
In geometry what kind of algebra do you use?
September 10, 2010

Intermediate Algebra
Hello I need a little help with my homework. I started trying to work it out but I am not sure if it is the correct solution. Please help! Question: Population growth. The exponential growth rate of the population of United Arab Emirates is 4.4% per year (one of the highest in...
September 10, 2010

math
The atomic number of cadium is half the atomic number of curium. Define a variable and write an expression for the atomic number of cadmium. I'm working in a group with my friends and we need help we're not the same people.
September 8, 2010

math
The atomic number of cadium is half the atomic number of curium. Define a variable and write an expression for the atomic number of cadmium. I'm working in a group with my friends and we need help we're not the same people.
September 8, 2010

English
I'm sorry-I needed to know what the theme was Thank you
September 8, 2010

English
What is the main idea of this? Please help-I'm terrible in english- Five score years ago, a great American, in whose symbolic shadow we stand today, signed the Emancipation Proclamation. This momentous decree came as a great beacon light of hope to millions of Negro slaves...
September 8, 2010

Math
Evaluate the logarithmic equation for three values of x that are greater than 1, three values of x that are between 0 and 1, and at x=1. Show your work. Use the resulting ordered pairs to plot the graph. State the equation of the line asymptotic to the graph (if any). y= log 1...
September 6, 2010

science
what is iit
September 2, 2010

science
A team of 6 scouts plans to cross a lake on a raft they designed. The scouts have wooden beams with an average relative density of 0.80. The beams measure 30cmx30cmx3m. The average scouts' mass is about 65kg and for their safety, they want the top of the raft to be at ...
September 2, 2010

science
During a competition, a 60kg cyclist rides along a horizontal road on a bike with a mass of 5kg. During her ride, she changes gears and uses the chain wheel with a radius of 7.5cm and 36 teeth, and the rear sprocket with 18 teeth. The pedal handle is 20 cm in length. a) ...
September 2, 2010

math
what is 7 to the 11th power equvilant to
August 31, 2010

british literature
1. Determine the speaker's attitude in thee lines: "Lo, all our pomp of yesterday/is one with Nineveh and Tyre!" a. the speaker feels Britain's greatness is similiar to that of ancient cities. b. The speaker believes the greatness of Britain could disappear, ...
August 18, 2010

health information management technology
This is supposed to be 500-700 words long :(
August 13, 2010

Algebra
Thanks so much
August 5, 2010

Algebra
Area of a painting. A rectangular painting with a width of x centimeters has an area of x^2+50x square centimeters. Find a binomial that represents the length. See the accompanying figure.
August 5, 2010

Year 12 Biology
What is a good and easy experiment I could do for my Year 12 biology assignment? I was thinking something with alcohol and the human body but I wouldn't know what my hypothesis would be. HELP!!
July 30, 2010

sheltered content instruction
Discuss what level of cognitive demand and context is represented by a student who performs each of the folowwing activities
July 23, 2010

chemistry
with the numbers 3, 7, 10 & 12 how you you make up the number 800 using different functions?
July 10, 2010

chemistry
4.The Kb of ammonia, NH3, is 1.8x10^-5. What is the pH of a 2.000 millimolar solution of ammonia , to 3 significant digits.
July 6, 2010

chemistry
Sorry I had a moment! I didn't process before I typed!
June 23, 2010

chemistry
Thank you! Can you explain to me where the 0.25 comes from?
June 23, 2010

chemistry
The equilibrium constant for the following reaction is 5.0 at 100c. If an equilibrium mixture contains [No2]=0.50 M, what is the [N2O4]? 2No2(g) <--> N2O4 (g) I do not understand if the Kc is 100c or where that plays in!
June 23, 2010

chemistry
Okay so for example P4(g) + 5O2(g) <==> P4O10(s) that would go to the right?
June 22, 2010

chemistry
Can anyone explain Le Chatelier's principal? How you know when it shifts to the products and reactants? Such as in 3O2(g) --><-- 2O3(G) 2CO2(g) --><-- 2CO(g) + O2 Thanks!!
June 22, 2010

chemistry
thanks for all this help! so for this one, 1 - it would be 0.108 x 35.7 = 3.86 moles of Na2CO3 2 - 2.86 moles Na2CO3 / 2 Moles HNO3 = 1.93 Moles HNO3. 3 - 1.93 Moles HNO3 x 0.150 M HNO3 = 0.290 L which would equal 290 mL. Is this the final solution? 4 - I need help with this ...
June 21, 2010

chemistry
what volume (in ML) of a 0.150 M HNO3 solution is required to completely react wtih 35.7 mL of a 0.108 M Na2CO3 solution according to the following balanced chemical equation? Na2CO3(aq) + 2 HNO3(aq) --> 2NaNO3(aq) + H2O(l) then, in the reaction above, what mass (in grams) ...
June 21, 2010

chemistry
my teacher insists that we do it that way, i don't really understand it but i try! so it would come out to be 0.026 moles Pb(NO3)2. Then, converting Pb(NO3)2 into KCl it would come out to be 0.052 Moles KCl. Then divide 0.052 by 0.150 which would equal 0.15 L?
June 21, 2010

chemistry
okay so the solution would be. 0.150 M KCl x 0.175 M Pb(NO3)2/ 1 M KCL x 0.150 L/0.175 M Pb(NO3)2 = 0.023 L?
June 21, 2010

chemistry
what volume (in L) of 0.150 M KCl solution is required to completely react with 0.150 L of a 0.175 M Pb(NO3)2 solution according to the following balanced chemical equation? 2KCl (aq) + Pb(NO3)2 (aq) --> PbCl2 (s) + 2 KNO3 (aq)
June 21, 2010

Finance
Newdex has net income of $2,500,000 and 1,000,000 shares outstanding. It needs to raise $3,610,000 in funds for a new asset. Its investment banker plans to sell an issue of common stock to the public for $40 per share, less a spread of 5%. How much must Newdex's after-tax ...
May 14, 2010

chemistry
How much heat is evolved when 1258 g of water condenses to a liquid at 100.°C?
May 10, 2010

chemistry
How much heat is evolved when 269 g of ammonia gas condenses to a liquid at its boiling point?
May 10, 2010

Economics
What are some national fiscal policies that can affect mortgage rates, housing starts, and housing prices?
May 7, 2010

physics
wouldn't the gravitational attraction stay the same and be 6.67 E -11 N*m2/kg2 as stated in the equation? I'm sorry I'm having a really hard time with this
April 21, 2010

physics
Gravitational force of attraction “F” exists between two point masses A and B when a fixed distance separates them. After mass A is doubled and mass B is quartered, the gravitational attraction between the two masses is
April 21, 2010

physics
A 5.0 N force directed to the west acts on an object for 2.0 seconds. What is the change in momentum of the object? Do I have to divide 5.0 by 2.0 in order to get the momentum or multiply?
April 21, 2010

Chemistry
Which aqueous solution has a freezing point closer to its predicted value 0.01 m NaBr or 0.01 m MgCl2?
April 21, 2010

college
Jake, you are right. I figured out the answer of 2/3 also.
April 21, 2010

math
Vanessa, the answer should be 288cm. for the surface area all you do is multiply lenght width and height
April 21, 2010

Algebra1
I am solving for linear equations and I'm wondering if I did Step 3 right.. 3x-y=8 x-y=8 Step 1 3x-y=8 3x-y+y=8+y 3x=8+y 3x/3=8+y/3 x=(8+y/3) Step 2 3(8+y/3)-y=8 8+y-y=8 8+2y=8 8+2y-8=8-8 2y=0 2y/2=0/2 y=0 Step 3 x=8+y(0)/3 x=2.6
April 18, 2010

Economics - stock purchase
Can someone please help me? I am so confused! My homework is called stock purchase and I need to find some information abut three stocks. I'm starting with microsoft. The first three questions are the stock name, symbol, and address of the headquarters. But after that it ...
April 15, 2010

Math
How to solve x^6 3x^3 2=0
April 15, 2010

Finance
If I had put 50,000 dollars away today in some kind of cd or money market account, and did not touch it or the interest for 20 yrs, how much money would I have, same ? with 80,000 please help
April 15, 2010

Physics
I thought to reduce the frequency of a particle, you would have to decrease the speed. no?
April 4, 2010

science
Im confused though, it says three lines result from transitions to the nf=2, which three lines?
April 1, 2010

science
Five lines in the H atom spectrum have the following wavelengths in Ǻ: a). 1212.7, b). 4340.5, c). 4861.3 d). 6562.8 and e). 10938. Three lines result from transitions to the nf = 2. The other two result from transitions in different series, one with nf = 1, and the other...
April 1, 2010

science
Five lines in the H atom spectrum have the following wavelengths in Ǻ: a). 1212.7, b). 4340.5, c). 4861.3 d). 6562.8 and e). 10938. Three lines result from transitions to the nf = 2. The other two result from transitions in different series, one with nf = 1, and the other...
April 1, 2010

Physics
Light travels in a line of optical fiber by total internal reflection between a core of refractive index 1.48 and a cladding 1.46 refractive index. The critical angle for total internal reflection to occur inside the core of the fiber is ... 80.6º 48.8º 43.2º ...
March 21, 2010

Physics
The refractive index of a medium changes with the wavelength of incident light. Typically, the shorter the wavelength the larger the refractive index. Fused quartz has a refractive index of 1.47 for indigo light of 400 nm in wavelength, and a refractive index of 1.46 for green...
March 20, 2010

physics
if a clown lets go of a rope that has an object attached to it traveling in a circular motion, what will happen to the object
March 19, 2010

English
Is there a website that you can type in a sentence and it will give you the parts of speech of that sentance?
March 11, 2010

Intro to algebra
2 + 5(x - 9) = -18 what does X equal?
March 10, 2010

Language arts
Ship is to trip as shout is to trout..
March 9, 2010

ALGEBRA
Part B. Each auditorium has both floor seats and balcony seats. Auditorium A has 250 floor seats and 310 balcony seats and Auditorium B has 195 floor seats and 410 balcony seats. Let f represent the cost of a floor seat and b represent the cost of a balcony seat. If you let R...
March 9, 2010

ALGEBRA
Answer the questions below. Use Equation Editor when writing or solving mathematical expressions or equations. First, save this file to your hard drive by selecting SAVE AS from the File menu. Click the white space below each question to maintain proper formatting. Part A. A ...
March 9, 2010

ALGEBRA
Can anyone explain this in 50 words why the equation turns out like it does? -6x-18=-6x+5 0x=23 and can not have zero in the denominator. Division by zero is undefined. 15x+18=15x+18 0x=0 Well, if you take anything times zero the resulting product is zero.
March 9, 2010

ALGEBRA
please help me explain this in 50 words.. Explain why the equation -6(x + 3) = -6x + 5 has no solution and 7x +18 + 8x = 8(x + 4) + 7x – 14 has infinitely many solutions.
March 8, 2010

ALGEBRA
Can anyone help me I need to explain this problem in 50 words. Explain why the equation -6(x + 3) = -6x + 5 has no solution and 7x +18 + 8x = 8(x + 4) + 7x – 14 has infinitely many solutions.
March 8, 2010

ALGEBRA
Beagleboy how do I explain that in 50 words? Post your 50-word response to the following: Explain why the equation -6(x + 3) = -6x + 5 has no solution and 7x +18 + 8x = 8(x + 4) + 7x – 14 has infinitely many solutions.
March 8, 2010

ALGEBRA
How do I explain this in 50 words I dont even know how the answer was done?
March 8, 2010

ALGEBRA
Post your 50-word response to the following: Explain why the equation -6(x + 3) = -6x + 5 has no solution and 7x +18 + 8x = 8(x + 4) + 7x – 14 has infinitely many solutions.
March 8, 2010

Chemistry
An alpha particle (mass 6.6 x 10^-24 grams) emitted by radium travels at 3.4 x 10^7 plus or minus 0.1 x 10^7 mi/h. (a) What is its de Broglie wavelength (in meters)? (b) Whats uncertainty in its position? for part a I got -3.41 x 10^6 meters which said it was wrong and I don&#...
March 4, 2010

Chemistry
im almost done with my hw just last six i dont get, i need the molecular, total ionic, and net ionic equations please Aqueous solutions of potassium phosphate and calcium nitrate are mixed .Aqueous solutions of barium chloride and sodium sulfate are mixed. Magnesium is added ...
March 4, 2010

english
What is the when or were for the adverb out in this sentence. Women brought out gardening tools and baskets.
March 4, 2010

Physics
You watch a distant woman driving nails into her front porch at a regular rate of 1 stroke per second. You hear the sound of the blows exactly synchronized with the blows you see. And then you hear 1 more blows after you see her stop hammering. How far away is she
February 25, 2010

Algebra1
If 365 = 5m + 5, value m
February 23, 2010

4th grade math
nick had 1 and 3/4 gallon of milk how many pints of milk does nick have hint there are 8 pints in 1 gallon
February 22, 2010

4th grade
Write 3 different improper fractions that equal 4 and 2/3
February 22, 2010

social studies
The relationship between the environment people live in and their culture is that when you see the environment of a person’s house their food and other surfaces of their house you will automatically know their culture or some thing related to it. Im not sure but is this ...
February 18, 2010

social studies
what is the relationship between the environment people live in and their culture?
February 18, 2010

Social studies
what is the relationship between the environment people live in and their culture?
February 18, 2010

social studies
your town or city is oing to have a culture fair. the fair will introduce people to new cultures. it will also introduce people to new cultures. it will also introduce people to diffferent culures within the United States. write a public service message for a local radio ...
February 18, 2010

Social Studies
Why do you think people in one culture someimes do not understand people in anoher?
February 17, 2010

Social Studies
Why is no culture exactly like any other culture?
February 17, 2010

Algebra
Dear troubled students, Well to be gramatically correct the smaller ones take less time to make. The smaller ones also consist less material so the prise is less to make one. I have always known it to be better to but the smaller ones even though it dosen't seam as big. If...
February 17, 2010

health
Are calories good for health? Why or why not. Thanks Alot!
February 15, 2010

Math
Is 5+98+45+798-654=56
February 10, 2010

school
Is there any specialized high school for either girls only or girls and boys seperate?
February 6, 2010

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