Thursday
July 31, 2014

Posts by AMANDA


Total # Posts: 1,694

Chemistry
I am having a bit of difficulty getting the net equation and the net ionic equation and the net ionic equation. I think I have the balance equation right. Thanks in advance for any help. For the acid base neutralization reaction of carbonic acid, H2CO3(aq), and lithium hydroxi...

Maths
When Professor Sum was asked by Mr. Little how many students in his classes, he answered. “All of them study either languages, or not at all. One-half of them study languages only. One-fourth of them study French, one-seventh study physics only, and 20 do not study at all...

PHYSICS
A race car's velocity increases from 3.6 m/s to 32.4 m/s over a 5-s time interval. What is its average acceleration?

Socialogy
Example from Connected written by Christakis and Folwer of Sacred Ritual.

chemistry
I am a bit confused with this proble because the concentration of SO3 at equilibrium. Any help would be appreciated. Given the reaction: SO2(g) + NO2(g) ⇌ NO(g) + SO3(g) ∆H = -42.6 kJ. How will the concentration of SO3(g) at equilibrium be effected by the following...

Finance
I need someone to help me calculate the Break Even point for all three year. 2002 Fixed Cost Rent Utilities $150000.00 Telephone $24000.00 Total $174000.00 2003 Fixed Cost Rent Utilities $150000.00 Telephone $24000.00 Total $174000.00 2004 Fixed Cost Rent Utilities $150000.00 ...

Social Studies
What was California's name during the mission times?

math 4th grade
a. 1/10 b. 13/54

math
there are 3 miniature chocolate bars and 5 peaunt butter cups in a candy dish. judie chooses 2 of them at random. What is the probablity that both she chooses 2 miniature choclate bars?

environmental science
How has the size and location of big cities changes since the year 1900

environmental science
what can be done to improve economic issue in cities

environmental science
You may never live in a big city, but we must all find ways to lower our environmental impact. What can the average citizen do with a minimum of cost and inconvienence to become more environmentally friendly?

environmental science
What can be done to help solve problems about major problems in large cities?

environmental science
1. How has the size and location of big cities changes since the year 1900?

chemistry
If the following thiol containing compound is oxidized, what product will be obtained? CH3-SH --> Can someone please help me with this? The only examples my book has are with two S, so I don't know how to do it with just one S. Thank you!!

Chemistry
Sorry about that - the density is 1.55 g/cm3 and the radius is 0.197 nm.

Chemistry
The density of an unknown metal is 1.55 and its atomic radius is 0.197 . It has a face-centered cubic lattice. What is the atomic weight of this metal?

Chemistry
Density is 12.0 g/cm3, radius is 138 pm, and molar mass is 106.42 g/mol

Chemistry
Palladium crystallizes with a face-centered cubic structure. It has a density of 12.0 , a radius of 138 , and a molar mass of 106.42. What is Avogardo's number?

chemistry
a known density for a liquid is 1.5 g/ml how many ml will 500 grams of this liquid occupy

Biology
Please help me !!! Compare and contrast the physiological functions of chloroplasts and mitochondria. Thanks

Chemistry
Please help !!!! Is anyone know what are two side reactions that could occur in the Diels-Alder Reaction of Cyclopentadiene with Maleic Anhydride in addition to the main product? Thanks

Chemistry
Please help !!!! In addition to the main product what are two side reactions that could occur in the experiment of The Diels-Alder Reaction of Cyclopentadiene with Maleic Anhydride. Thanks

Chemistry
Please help !!!! The acid impurity in your unknown was benzoic acid. a) Write an equation for the reaction that occurs during the NaOH extraction. b) Write an equation for the reaction that occurs after the addition of HCL. Thanks.

web design
There are many variations and shades of color which you could not possibly know all the names of so a hexadecimal is the best use to get the color you prefer.

social studies
what are three natural resources in Iowa?

geometry
can someone please explain

geometry
List the following elements in proper set notation. Place the elements in numerical order within the set. * 0 * 1 * 123 * 4 * 34

science
i need the same exact question for my ap bio take home test too!

math
The answer is 90.

Math
A woman has a total of $9000 to invest. She invests part of the money in an account that pays 7% per year and the rest in an account that pays 8% per year. If the interest earned in the first year is $664, how much did she invest in each account?

Math
I'm so confused??

Math
One angle isless than four times another. Find the measure of each angle if they are complements of each other.

10th grade
Ulrich Zwingli

Physics
First conver atm to N/m^2. 1 atm = 1.013 x10^5 N/m^2. Force F=mg The pressure is the force, gravity is 9.8 m/s^2, the diameter is in centimeters, so convert to meters and take half, you don't know m (mass). The formula you use is P = F/A. So you will have a formula that lo...

Physics
First conver atm to N/m^2. 1 atm = 1.013 x10^5 N/m^2. Force F=mg The pressure is the force, gravity is 9.8 m/s^2, the diameter is in centimeters, so convert to meters and take half, you don't know m (mass). The formula you use is P = F/A. So you will have a formula that lo...

chemistry
21472.5 cal

english
What kind of complement is the underlined word? This jigsaw puzzle is too (easy) for me What kind of complement is the underlined word? Kiki, hand (them) the dictionaries for shelving.

marketing
Consider a recent purchase that you or a family member has made (examples: a household product, a DVD or CD, a grocery item, an electronic device, etc.) Describe the item and list three main reasons you purchased that product as opposed to another product. Then, identify the i...

12 english, romeo and juliet
can someone help me out in anyway possiable, it says create a modern scene with two to four characters based on a theme in a ROMEO AND JULIET. Devise a new situation, new setting, and new character names, but be faithful both to the theme from ROMEO AND JULIET and the basic pe...

english
write a review of a performance. the performance can be either a theater production or a film

english
explore worlds or four own making and write them into a science fiction story

The Red Badge of Courage
by the end of The Red Badge Of Courage, Henry has grown and changed in many ways. Write a cause an effect essay in which you describe the events that cause Henry to change. Describe the ways in which Henry changes and provide examples

The Red Badge of Courage
the red badge of courage has been called an " anti-war novel" do you agree or disagree? write an expositor essay in which you explain your opinion. be sure to include specific examples from the novel to support your opinion

12 grade english
explore worlds of your own making and write them into a science fiction story PLEASE HELP ME

english
write a review of a performance . the performance can be either a production or a film

english
analyze a cultural conflict that you and another person have had as a result of your different cultural views. CAN SOMEONE PLEASE HELP ME OUT ON THIS ONE

english
write an autobiographical narrative about an experience that was meaningful to you

english
Hawthorne uses a range of symbols in THE SCARLET LETTER. Develop a chart in which you list all the symbols Hawthorne uses, the literal meaning of the symbol, the symbolic meaning of the symbol, and a specific example from the novel of each of the symbols you listed

cooking class
what's a violet betsey an this is for a foods class so food relatted please

english
what is the effectiveness of communicationg when two people are talking, can someone give me an example as if you were observing them

english
what are the elements of plot, i have to analyze a short story using elements of plot , and when i did my essay i failed it , so can anyone please help me please i will really appreciate it

anglo-saxon,beowulf
creat a narrative poem in the Anglo- Saxon style of Beowulf, can someone please help me

10th grade Literature
i don' see any simularitys to this at all. i ment compare and contrast sorry.

10th grade Literature
Can someone tell me the Simularitys and Non-simularitys of these too books Baldwins account of the Titanic and Rosenthal's avvount of his visit to auschwitz, Please and thank you

Algebra
k) If the trip is 3 miles, how much does each one charge? If the trip is 6 miles, how much does each one charge? Explain 8(3)+32=y 24+32=y Y=56 10(3)+24=y 30+24=54 Y=54 8(6)+32=y 48+32=y Y=80 10(6)+24=y 60+24=84 Y=84 THIS IS WHAT I CAN'T FIGURE OUT :-)--> At what mileag...

physics
One end of a copper rod is immersed in boiling water at 100 degrees celsius and the other end in an ice-water mixture at 0 degrees celsius. The sides of the rod are insulated. After steady-state conditions have been achieved in the rod, 0.180 kg of ice melts in a certain time ...

math 10 grade
4y2 + 25y + 6 can you explain how to do step by step thanks Factor completely

calculus/finite
I am taking an online finite math class, so I dont have an instuctor to sit down with me and help me. The text book is so hard to follow. One of the problems I have having a hard time with gives an initial tableau and asks us to use the simplex method to solve each maximizatio...

8th grade math
John has already saved $40 and wants to buy an I-Pod for $129 in 4 months. To find how much he should save each week he wrote the following equation: 40+16n=129.

fundamentals of business
Explain at least three ethical issues within today’s business environment that affect your community and organization

college
In traditional brainstorming, individuals or groups of people compile ideas on a topic, but do not evaluate or organize the ideas presented. In contrast, mind-mapping —also called concept mapping—visually places thoughts into categories. Resources: Appendix C, Steps ...

geography
Hello i have looked throughout my textbook and my question is cause i can't find it farmers in southeast Asia have adapted to the dry climate of the region by... A.Building Dams and irragation systems B. covering Large ares with forests. C. becaoming nomads who searching f...

Physics
Can someone please help me with the following 2 questions? I wasn't sure if I was grasping the whole idea. **Consider a baseball that is caught and then thrown at the same speed. Which case illustrates the greatest change in momentum, which requires the greatest impulse: t...

trig
when a vehicle is manufactured,its wheels are calibrated to rotate a specific number of times for given speeds with "standard" tires. Suppose a small pickup has standard tires with a radius of 14 inches. You decide to replace those tires with ones which have a radius...

college chem
calculate the density of O2 gas( in g/L) at 1.22 atm and 25 degrees C

math
Solve by elimination method. 2r-5s=-33 5r+2s=48 Solve by substitution method. 5x+6y=5 x-9y=40 I always get these two confused... can someone please help me with these two problems?? I would really appreciate it..

math
Solve by elimination method. 2r-5s=-33 5r+2s=48 Solve by substitution method. 5x+6y=5 x-9y=40 I always get these two confused... can someone please help me with these two problems?? I would really appreciate it..

math
solve by substitution method. 5x + 6y =5 x = 40 -9y first I rewrite to y=mx+b I get: 6y=5x+5 -9y= x +40 after that I am lost..... can someone please help me??

math
can someone please check my answer? the answer I got was s= -69/-21 or 3.28

math
can someone please check my answer? the answer I got was s= -69/-21 or 3.28

math
Solve by elimination method. 2r-5s=-33 5r+2s=48

math
can someone please check my answer? the answer I got was s= -69/-21 or 3.28

math
Solve by elimination method. 2r-5s=-33 5r+2s=48 I keep getting different answers... I can never get these right.... so first I multiply the first equation by 2 and the second by 5?

Biology
We are looking at hyperaccumulating plants, and I wanted to know what happens to the heavy-matals in the plant when the plant dies. Do they go back into the soil as a contaminant, do they simply "leave" as non-toxic elements etc? If you could help me that would be gr...

Practical Exercise(Floral Design)
which of the following could not be used as filler for this arrangement

Practical Exercise(Floral Design)
which of the following could be used as line flowers for this arrangement.

checking answers 4 algerbra
SOLVE USING ADDITION AND MULTIPLICATION PRINCIPLE 6X-7<-25

Science
the cause is xylem dries up and dies, what is the effect? this is for my chapter of plant transport system

Calculus (derivatives)
Find the derivative of cos^2(4x)

math
Afarmer must purchase 100 animals. He must spend exactly $100. He must have at least one of each animals. Sheep cost $.50, cattle cost $1.00 and horses cost $10

socieconomics
Methods of maintaining peace & unity in bi-national multinational and multiethnic states?

science
hurricanes in the northern hemisphere always travel north while hurricanes in the southern hemisphere always travel south. This is due to the earths _______ and is called the ________ ________. can you help me fill in the blanks

Chemistry
I need help setting up this problem. How many milliliters of 0.203 M KMnO4 are needed to react with 3.64 g of iron(II) sulfate, FeSO4? The reaction is as follows. 10 FeSO4(aq) + 2 KMnO4(aq) + 8 H2SO4(aq) → 5 Fe2(SO4)3(aq) + 2 MnSO4(aq) + K2SO4(aq) + 8 H2O(l) Thanks

Physical Science
Two tuning forks are struck at the same time. One tuning fork has a frequency of 20 Hz while the second tuning fork has a frequency of 226 Hz. How many beats will result?

Physics
you slide a 325-N trunk up a 20.0 degree incline plane with a constant velocity by exerting a force of 211 N parallel to the incline plane a)what is the component of the trunk's weight parallel to the plane ? b)what is the sum of your applied force ,friction and the parall...

Social
What are the three roles of the individual in a market place?

physics
How do the acceleration vectors differ on opposite sides of the path for un iform circular motion? How are they the same?

college phyiscs
A car starts from rest on a curve with a radius of 160 m and accelerates at 1.80 m/s^2. How many revolutions will the car have gone through when the magnitude of its total acceleration is 2.20 m/s^2?

chem
If 50.0 mL of a 0.10M solution of sodium chloride is mixed with 50.0 mL of 0.10 M magnesium chloride, what is the molar concentration of chloride in the resulting solution?

science
what is the last skill i have inference predition obsevation and classification?

chemistry
Concentrated ammonium hydroxide (aq ammonia) has a density of 0.90g/mL and is 28% by mass ammonia. Determine the molar concentration of ammonium hydroxide.

Geometry
I really need help with this. Explain how the formula for the area of a triangle can be determined by using the formula for the area of a parallelogram.

Chemistry
i got the mm of CaH2 to be 42.096 and the two moles of H2O to be 36.032. This means that CaH2 will be left over correct?

Chemistry
CaH2 is so reactive with water that it can be used to "dry" solvents other than water. If a sample if solvent that contains a total of 14g of water is added to 24.6g of calcium hydride, which of these will remain after the reaction is complete: water or calcium hydri...

Physics
At what altitude above the Earth's surface would your weight be three-fourths of what it is at the Earth's surface? Assume re = 6.371 10^3 km.

social studies
i forgot this name the 4 england colonies i need help plz tell me

chemistry
if a barium ions Ca2 plus have a charge of 2 plus and hydroxide ions C11-have a charge of 1-,the compound calcium chloride is

Chemistry
Thanks so much. These examples really help me out.

Chemistry
A sample of sandstone consists of silica, SiO2, and calcite, CaCO3. When the sandstone is heated, calcium carbonate, CaCO3, decomposes into calcium oxide, CaO, and carbon dioxide. CaCO3(s) → CaO(s) + CO2(g) What is the percentage of silica in the sandstone if 19.2 mg of ...

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