Questions Asked on
December 11, 2007

chemistry
how do i write a net ionic equation for Lead (II) Nitrate and Sodium Carbonate react to form Lead Carbonate and Sodium Nitrate??
asked by caren 
physics
A water slide is constructed so that swimmers, starting from rest at the top of the slide leave the end of the slide traveling horizontally. There is still a height between the surface of the water and the end of the slide. One person hits the water 5.00m
asked by ajo 
precal... compound interest and modeling data
Please help me with these 2 problems! 1. Complete the table for the time t necessary for P dollars to triple if interest is compounded continuously at rate r. r= 2%, t=? r= 4%, t=? r= 6%. t=? r= 8%, t=? r= 10%, t=? r= 12%, t=? 2. Draw a scatter plot of the
asked by anonymous 
Math Word Problem
Counting Chicken Wings At Annie's HomeCooked Chicken Wings Restaurant, chicken wings are served by the bucket. The Biggest Bucket O'Wings is really big! Figure out how many wings are in the bucket. If the wings are removed two at a time, one wing will be
asked by Linda 
chemistry!
Indicate the type of intermolecular forces expected with each of the following compounds. H2 Li2CO3 LiOH C3H7OH choices include: Hydrogen Bonding,IonMolecule and vanDerWaals. help me! please!!!! im so stuck!
asked by daniella 
economics vocab.
Key terms: *frictional unemployment *seasonal unemployment *structural unemployment *cyclical unemployment *census *unemployment rate *full employment *underemployed *discouraged worker 1. My cousin Harold is used to ______________, since he works for a
asked by anonymous 
chemistrylast one i swear
calculate the normality of Ca(OH)2 in a solution made by dissolving 4.75 g Ca(OH)2 in enough water to a make 250 mL of solution
asked by Hillary 
physics
A horizontal plank (m = 2.0 kg, L = 1.0 m) is pivoted at one end. A spring. (k = 1.0 x 10. 3. N/m) is attached at the other end find the angular frequence for small oscillations?
asked by shan 
physics!
A pitcher throws a 0.140kg baseball, and it approaches the bat at a speed of 40.0m/s. The bat does nonconservative W=70.0J on the ball in hitting it. Ignoring air resistance, determine the speed of the ball after the ball leaves the bat and is 25.0m above
asked by kabo 
compound interest
How do I solve these problems? Complete the table for a savings account in which interest is compounded continuously. 1. Initial Investment: $1000 Annual % Rate: 3.5% Time to Double: ? Amount After 10 Years: ? 2. Initial Investment: $750 Annual % Rate: ?
asked by anonymous 
college math
A couple plan to have exactly three children. (a) Construct a tree diagram and list the sample space. (b) Find the probability that the family has at least two girls.
asked by Rose 
Math  Working with Logs!!
On September 26 2001, an earthquake in North Bay measured 5.0 on the Ritcher scale. What is the magnitude of an earthquake 3 times as intense as North Bay's earthquake? I would post my answer, but in text, it's just confusing and I can't post picture links
asked by Anonymous 
Chemistry  1st Yr College Level
The corrosion of iron can be thought of as an electrochemical cell reaction. Calculate the voltage difference between two points of corroding iron differing only in their partial pressures of oxygen: 0.20 atm of oxygen at one point and 0.0010 atm of oxygen
asked by Anne 
algebra
On Monday, Voltaire drove to town at 60 miles per hour. On Tuesday, he drove to town at 40 miles per hour. If the totaling traveling time for both trips was 15 hours, how far was it to town? I know distance=(rate)(time).so I set it up like
asked by Anthony 
Chemistry
Which of the following molecules has polar bonds and is nonpolar? HF ICI3 NF3 SF4 BF3
asked by Lauren 
Chemistry
Which of the following is a weak base HOCl LiOH Ba(OH)2 KOH NH3
asked by Lauren 
PHYSICS!!!HELP£¡£¡
A pitcher throws a 0.140kg baseball, and it approaches the bat at a speed of 40.0m/s. The bat does nonconservative W=70.0J on the ball in hitting it. Ignoring air resistance, determine the speed of the ball after the ball leaves the bat and is 25.0m above
asked by kabo 
physics
Two blocks of mass m1 = 1.2 kg and m2 = 1.7 kg are connected by a massless string, as shown in the Figure. They are released from rest. The coefficent of kinetic friction between the upper block and the surface is 0.45. Calculate the speed of the blocks
asked by anonymous 
English paper
Anti!@#$%^& feminist Andrea Dworkin suggests that !@#$%^&ography is a new genre used by men to humiliate and subjugate women. Her essay “The New Terrorism” opens with rape and wife beating statistics committed against women by men in the United
asked by Christi 
preAlgebra
Write the following as a fraction and show your work. 0.83 (the three is repeating) I don't know how to do it with only one of the numbers repeating and it is not in my book.
asked by Greg 
ALGEBRA
1, Factor each expression x^2  10x  24 A. (x + 4)(x  6) B. (x + 6)(x  4) C. (x + 2)(x  12) D. (x + 12)(x  2) 2, x^2  36 = 0 A. (1 + square root of 3, 1  square root of 3) B. (6,6) C. No solution D. None of these 3, Factor each expression 49 x^9 
asked by STUCK 
Chemistry
Which if the following compounds is insoluble in water (NH4)2CO3 AgBr CuSO4 KI LiNO3 I thought it might be AgBr
asked by Lauren 
US History
Describe Thomas Jefferson's view of the federal government and its responsibilities.
asked by Anonymous 
AP Chem
a 4.22 gram sample of copper II sulfide was added to excess hydrocholoric acid with hydrogen sulfide gas being generated and collected over water. What volume of hydrogen sulfide gas would be collected at 32 degrees Celcius and 749 torr? The vapor pressure
asked by Susan Shoemaker 
Chemistry
All of the following are weak acids except HF H3PO4 H2SO4 HNO2 HC2H3O2
asked by Lauren 
WRITING
What differences did you notice between your logical reasoning process and your moral reasoning process?
asked by LILI 
HEEEELLLLLPPPP!!!!!!
Can soneone please help me where it says Hearing Loss/Causes
asked by Mack 
college math
A box of chocolates contains 20 identically shaped chocolates. Five of them are filled with jelly, three are filled with caramel, and twelve are filled with nuts. What is the probability that one chocolate chosen at random is filled with jelly, caramel, or
asked by Rose 
chemistry
2.5 moles of Cl2 reacts with a large excess of P4. The actual yield of PCl5 is 0.50 moles. What is the percent yield? P4(s) + 10 Cl2 (g)> 4 PCl5 (g)
asked by Bryan 
Optimization  Calculus
Find the point closest to the line sqroot(X+1) from the point (3,0). d = [(x  3) + (y  0)]^1/2 d = [(x  3) + (y)]1/2 Do I now substitute in the equation y = sqroot(X+1) and solve?
asked by Anonymous 
Physics
An alloy of copper and gold displaces 1.935 cm^3 of water. It has a mass of 33.44g. If gold has a density of 19.3g/cm^3 and copper has a density of 8.9g/cm^3, what is the percent of gold by mass in the object?
asked by Anonymous 
economics
Fill in the blanks. 1. Reason for unemployment: _____________________________ Type of uneployment: very low employment 2. Reason for unemployment: a healthy economy that is working properly Type of unemployment: _____________________________
asked by anonymous 
Science
How does a raw banana relate the second law of thermodynamics to the changes in energy observed in Appendix C. How did the amount of energy gained compare to the amount of energy lost as heat at the second through fourth trophic levels? Considering the
asked by Danny 
College Algebra~ Check answer please
Can someone check my answers please. The formula for calculating the amount of money returned for an initial deposit into a bank account or CD (certificate of deposit) is given by A=P(a+r/n)^nt A is the amount of the return. P is the principal amount
asked by Alicia 
Julia  Green's theorem
Sorry, I did not see your question ================================= Posted by julia on Monday, December 10, 2007 at 9:15pm. Can someone show me step by step how to work this problem out please. Let C be the triangle with vertices (0,0), (1,0), and (1,2).
asked by Damon 
Ethics
Asian Americans and Pacific Islanders are a model minority. Asian Americans and Pacific Islanders belong to a single “Asian American” culture.
asked by Mikalah 
physics
n alloy of copper and gold displaces 1.935 cm^3 of water. It has a mass of 33.44g. If gold has a density of 19.3g/cm^3 and copper has a density of 8.9g/cm^3, what is the percent of gold by mass in the objec
asked by Anonymous 
Hearing Loss/Causes
I need notes on the category's of hearing loss and a persons DB Loss.
asked by Mack 
College Math
12 base 5 divide by 4021 base 5
asked by Pumpkin 
Science/Biology
Pick the BEST answer: A)Which Of The Following Is An "Excitable Cell"? 1) Neuron 2) Electron 3) Hormone 4) Both 1 & 2 5) All Of The Above B)What Is The Popular Molecule That Energizes Many Activities In Cells? 1) Adenosine Triphosphate 2) Adenosine
asked by Biomed 
microeconomics
how would you use principle of marginal analysis to make a decision.
asked by lisa 
Algebra 1
126a(1/9a)(1/7a cubed) and the answer to this in my book says 2a to the fith. How does it work, i've tried multiple times.
asked by Elizabeth 
English Expressions
1. Curiosity and concentration are important components in memorizing items. If you have a strong desire to learn and memorize, you can memorize it better. 2. Bisarre association is important. If you want to memorize two items together using association,
asked by John 
math
when you're rotating a trapezoid that's in quadrant 4 90 degrees, does the trapezoid goes in quadrant 2 and the coordiantes switch? also, does the trapezoid goes in quadrant 1 when rotating 180 degrees?
asked by robert 
algebra
solve the following using substitution 8x4y=16 y=2x4 8x4(2x4)=16 8x8x+16=16 0x+16=16 so what do i do now?
asked by Christi 
english
can someone explain how to use the word serenity in a sentence? examples please? Would you say someone is filled with serenity?
asked by Anonymous 
grammar
In the following sentences, what are the common and nouns? First sentence: Often on October outings, Otto offers oranges to officers. In this sentence I am confused by October. It seems like it should be a proper noun, but in a way it seems like it is
asked by Lisa 
FINANCING
What are some areas or businesses, besides the government, where we may see value in cash accounting strategies? Incidentally, there is one country that does not use cash basis accounting. Does anyone know the country using accrual accounting methods?
asked by Jess 
math
is the answer to r2/3r1/r1/2 r7/6/r1
asked by Hillary 
PreCalc
Solve the system by the addition method 10x^2 + 10y^2320=0 30x^2 + 6y^2  336 = 0
asked by LT 
math
simplify: (2x1/3y2/3)6/(x4y8)1/4
asked by Hillary 
Microeconomics
Consider a competitive firm that produces tomatoes. The total fixed costs are $10 and TVC is related to output according to the followin scheduele Quantity TVC 0 0 1 45 2 85 3 120 4 150 5 170 1)Compute ATC and MC 2) What is quantity if P=40 3)what is
asked by Mark 
Algbra I
how do i do a problem like this and other problems like this: Write an equation in pointslope form of the line that passes through the given point and has the given slope. (8,2) M=2
asked by Mike 
chem.
Hydrogen Chloride and Sodium Carbonate react to produce Hydrogen Carbonate and Chloride Sodium how do i write that in net ionic form?
asked by michelle 
math
can someone help me with this? find the next three terms? 100, 40, 16, 6.4,......
asked by andy 
Never Mind
I'm just gonna call my friend, she's really good in math. THANKS FOR ALL THE HELP!!!
asked by Elizabeth 
spanish
preocuparse darse prisa ok what do they mean and would i have to change them if i say like: por la manana no olvidarse de darle de comer al perro??
asked by chelsea 
Math
Could you help me with this problem? 2 5 Sorry couldn't type the problem correctly. The problem is 5 to the negative 2. I got 0.04 is the answer. Is this correct. Thank you.
asked by Plse Help 
pre alg.
In a pattern, the # of colored tiles used in row x is 3 to the power of x. Find the number of tiles used in rows a, 5, & 6. i don't get this problem & could use some help...
asked by Anonymous 
social studies
which web sites often have more dependable information than other sites?
asked by malik 
math
when you're rotating a trapezoid that's in quadrant 4 90 degrees, does the trapezoid goes in quadrant 2 and the coordiantes switch? also, does the trapezoid goes in quadrant 1 when rotating 180 degrees This is my answer? Is this right?
asked by robert 
Bobpursley for this question please, physics
I don't understand though why you can make w/mlambda I thought it was the otherway around? (in regards to this w/N sinTheta= m lambda N= w/(m lambda) * sinTheta N= w/(m lambda) * x/L
asked by URGENT 
college math
How many different fourdigit numbers can be formed from the digits 0 through 9 if the first digit must be even and cannot be zero?
asked by Rose 
english
ok i have to write a research essay on the viet cong but i don't no how..... plez help me today if u can thanks
asked by no name 
Science
Please help with the formula for efficiency in realtion to horsepower?
asked by Heather 
Hearing Loss/Causes
If a deaf person HAS A DB loss of 76.1 for their right ear and a DB loss of 82.2 for their left ear than what is the persons DB loss? I don't understand how I would find the persons DB loss.
asked by Mack 
physics
describe the death of a massive star (10 solar masses)
asked by Rosio 
physics
what is a black hole and how does a black hole form?
asked by Rosio 
Physics
A wagon was used to move a 90 lb rock 120 yds. It took 40 sec and 70 lbs of force. Can someone help me solve for efficiency and horsepower????? PLEASE :)
asked by Heather 
physics
true or false: according to einstein, a gravitational field is equivalent to an accelerating frame of reference.
asked by rosio 
College Math
Express each decimal of integers, in simplest form. 0.1 with the repeating decimal 1
asked by Pumpkin 
inflation
how does inflation affect each of the following? *fixed income *savings
asked by anonymous 
math
simplify (4a4)3/2/(b2)
asked by Hillary 
sci275
considering the amount of energy required to produce animal based foods and goods, should humans change their habits so they consume products closer to the bottom of the food chain because it is more efficient?
asked by melly 
englisg
who were the viet cong????????????????????????????????/
asked by bre bre 
math
simplify r2/3r1/r1/2
asked by Hillary 
math
express the following in form of a+bi: (5i)(3/5i)
asked by aru 
Chemistry
When an aqueous solution of lithium chloride is mixed with an aqueous solution of ammonium sulfate a precipitate forms a new salt is formed a gas is evolved an acid and base are formed no reaction occurs I either thought it was a precipitate forms or no
asked by Lauren 
government
I need to compare/contrast the Illinois judicial branch to the national judicial branc and give at least three good similarities and three differences.
asked by Ian 
Chemistry
How many protons, neutrons, and electrons are in 24 +2 Mg 12 is it 12p, 14e or 10 e?
asked by G 
sci
provide a descipitation and temperature for summer and winter. Then identify the characteristics of a plant and animal that is seen regularly in your region. How do the characteristics relate to the amount of rain or sunlight in your region.
asked by jamie 
Chemistry
how could I figure out which molecule has the stongest bond if I am given some such as HF AND HI.
asked by Susi 
Religion Research Paper
1. Considering that Hinduism lacks a uniting belief system, what makes up the Hindu religion? 2. What are the cultural and societal influences that have made Hinduism vital to the region in which it originates? 3. Explain the desire for liberation from
asked by Danny 
science
What is the importance of decomposers in the carbon cycle? Explain why nitrogen is important to organisms?
asked by LISA 
English textual history
What does it mean to research a textual history of a work? i.e. Hamlet's textual history
asked by Nelson 
math
when you're rotating a trapezoid that's in quadrant 4 90 degrees, does the trapezoid goes in quadrant 2 and the coordiantes switch? also, does the trapezoid goes in quadrant 1 when rotating 180 degrees? I really need an answer!!!!!!!
asked by robert 
AP Chem
i always get the error analysis section of my lab wrong so i need a NON human error in an experiment involving the diffusion of gases Experiment: stick cotton ends of a Qtip (one soaked in HCl and one in NH3) into either end of a drinking straw and
asked by Blair 
social studies
what is the difference between the kind of information presented by current newspapers and historic newspaper?
asked by kyesha 
SCI 275
What are some alternatives to destroying tropical rain forests, which may be reducing nature’s ability to replace its species?
asked by dawn 
social studies
what does a search engine do?
asked by kyesha 
Science
A wagon was used to move a 90 lb rock 120yds. It took 40 sec and 70 lbs of force to do this. Find horsepower and efficiency
asked by Heather 
algebra 1 :(
The height of a triangle is 8m less than the base. the area is 10m^2. Find the height and base. I really need help on just turning this word problem into an equation!
asked by nicole 
calc
find dy/dx when x = csc y
asked by joo 
history
what are the main influences on central America & the Caribbean countries? a)Aztecs & Mayas b)ecotourism & communism c)the spice trade & shipping d)colonialism & slavery
asked by kathryn 
une lab de physics
Hello, we are doing a lab dealing with diffraction gratings. The problem I have is that we are supposed to find the number of slits, N, based on gathered information. I have x, L, d, m, and w, just not N, which is what I am trying to find. I also have the
asked by URGENT 
Chemistry
Which of the following indicates the exsistence of stron intermolecular forces of attraction in a liquid? a very low boiling point a very low vapor pressure a very low critical pressure a very low viscosity a very low heat of vaporization
asked by Lauren 
College Algebra~Can someone check my answers pls
f(t)=log(t5) t5>0 t>5 g(x)=5e^x all real numbers g(x)=In(t+4) t+4>0 t>4 g(t)=5^t all real numbers
asked by Alicia 
opinion question: ATM fees
Should banks be allowed to charge ATM fees? Why?
asked by anonymous 
French
for summer...ete or l'ete, how do i know which one to use?...sometimes its cet ete...sometimes its l'ete...its confusing.
asked by Miche 
Communication
Identify a source of miscommunication with which you are familar. How can this type of miscommunication be effectively addressed or completely avoided?
asked by Sonya 
chemistry
if [OH]=10pOH. NAd the pOH=7.85 then what does [OH]equal?
asked by Hillary 
PLEASE HELP
with the following problem: A wagon was used to move a 90 lb rock 120 yds. It took 40 seconds and 70 lbs of force. Find Horsepower and Efficiency % THANKS.
asked by Heather 
chemistry
Two acids have the following pKa values:3.85 and 5.65. what are the corresponding Ka values?
asked by Hillary 
math
what is the square root of x4
asked by Hillary 
U.S. History
Where can I find statistics for the Trail of Tears? I've found plenty of generalizations and estimations, but I would also like to know how many white army people went along and how many of them died.
asked by Anonymous 
Environmental
environmental sustainability
asked by Bailey 
Architecture
When you draw an elevation from a floorplan, how do you determine the vertical height of windows and doors?
asked by Tay 
microeconomics
Describe some of the opportunity costs when you decide to do the following. Attend college instead of taking a job Watch a movie instead of studying for an exam. Ride the bus instead of driving your car
asked by gina 
MATH
HOW DO YOU TURN A PERCENT IN TO A DECIMAL???
asked by JOEY 
macroeconomics
i have a college macroeconomics question due tommorow can u help?? economy decribed as follows: C=14,000+.5(yt)40,000r I=800020,000r G=7000 NX=1800 T=8000 Y=40000 1)find a numeric equation relating planned aggregate expenditure to output and the real
asked by sam 
geometry
what is the equation of the line whose slope is 3 and which passes through (0,5)?
asked by sara 
English
Can someone check over the grammatical errors in my riddles. Do you have any suggestions on how to improve them? Often revered for my beauty, I am put on the spot. King Arthur’s lover is what I am suspected to be but the truth is I see in Lancelot what
asked by Anonymous 
social studies
how did the cotton gin affect production?
asked by angel 
law
How long is the term for a federal Circuit Judge? I can't seem to find the answer anywhere.
asked by Anonymous 
social studies
how did places like Saratoga Springs, Montauk Long Island, Lake Erie and Seneca falls get their names?
asked by kenny 
science
how does the constellation make stuff?
asked by karisha 
S
What are some ways we can decrease destruction, fragmentation, or degradation of habitats?
asked by dawn 
social studies
how is the information in newspapers organized?
asked by malik 
S
What are some ways we can decrease destruction, fragmentation, or degradation of habitats?
asked by dawn 
social studies
explain the two basic way you can look for information on the internet.
asked by malik 
pre alg.
In a pattern, the # of colored tiles used in row x is 3 to the power of x. Find the number of tiles used in rows a, 5, & 6. no one has responded to my question yet
asked by Anonymous 
Chemistry
A gas fills 80ml at 740mm. what volume will it have at standard pressure? Stuck on this problem. Please Help. Thanks
asked by Maggie 
math
what is an example of a commutative propery of addition
asked by maddie 
prealg
In a pattern, the # of colored tiles used in row x is 3 to the power of x. Find the number of tiles used in rows a, 5, & 6. i don't get this problem & could use a little help, plz!
asked by kathryn 
Physics Lab
Hello, we are doing a lab dealing with diffraction gratings. The problem I have is that we are supposed to find the number of slits, N, based on gathered information. I have x, L, d, m, and w, just not N, which is what I am trying to find. I also have the
asked by McPhysics 
English
Hi, I need to cite a source for a paper but I cant tell whether its a paper or an article or an article from a journal or book. Can you please help. "title of work" author from jump cut, no 27, July 1981, pp 2732 copyright Jump Cut: A review of
asked by English Urgent Help 
history
What do most countries in middle & south America have in common with the U.S.?? How are they different?? i could use some help with this question, plz
asked by kathryn