Questions Asked on
July 1, 2010

Chemistry
Write the chemical formulas for the compounds containing each of the following: a) one calcium atom for every two iodide atoms. b) two nitrogen atoms for every four oxygen atoms. c) one silicon atom for every two oxygen atoms. d) one zinc atom for every
asked by Melissa 
Chemistry
An antacid tablet weighing 1.462 grams was dissolbed in 25mL of 0.8M HCl and diluted with water. The excess HCl was titrated with 3.5 mL of 1.019M NaOH solution. 1. Calculate the number of millimoles added to the tablet 2. Calculate the number of
asked by Daria 
maths
if cot theta =7/8 , evaluate (1+sin^2theta)(1sin^2theta)/(1+cost^2theta)(1+co^2theta) the answer should be 49/64 but i couldn't get that answer. can any one help?
asked by rani 
algebra
find the last digit in 3^9999.
asked by Branden 
phoenix
o Is it difficult to accurately measure prejudice? Why or why not?
asked by isha nix 
Finance 200
The Landis Corporation had 2008 sales of $100 million. The balance sheet items that vary directly with sales and the profit margin are as follows: Cash, 5%. Accounts receivable, 15. Inventory, 25. Net fixed assets, 40. Accounts payable, 15. Accruals, 10.
asked by Hollie 
Chemistry I
For the methanol combustion reaction 2CH3OH(â„“) + 3O2(g) > 2CO2(g) + 4H2O(g) estimate the amount of P [change]V work done and tell whether the work was done on or by the system. Assume a temperature of 27â—¦C. 1. 2.5 kJ, work done by the
asked by Anonymous 
american government
A conservative is opposed to government intervention in: a)both the economic and social sphere b)the economic sphere,but not the social sphere c)the social sphere,but not the economic sphere d)neither the social nor the economic spheres IS b correct
asked by vedrana 
physics electricity and magnetism
We are told that the magnitude of the negative charge on the electron is exactly equal to the magnitude of the postive charge on the proton. But is it? Suppose that these magnitudes differ from each other by 0.000040 %. Each copper coin contains 3 X 1022
asked by naveel 
math
A 1 1/2pound piece of turkey costs $7.98. A 6ounce package of the same sliced turkey costs $2.49. What is the difference in price per 3ounce serving? 2)Jim earns $44,700 annually and pays 111/4% for state and local taxes. How much tax does he pay
asked by angelika 
Math
How can i factor 27a^2  75b^2
asked by Adeola 
Chemistry
Write the chemical formulas for the compounds containing each of the following: a) one calcium atom for every two iodide atoms. b) two nitrogen atoms for every four oxygen atoms. c) one silicon atom for every two oxygen atoms. d) one zinc atom for every
asked by Melissa 
economics
Assume Cliff and Paul were both producing wheat and corn, and each person was dividing his time equally between the two. Then each decides to specialize in the product in which he has a comparative advantage. Furthermore, they agree to trade 3 bushels of
asked by sungyeon 
Physics
Fairgoers ride a Ferris wheel with a radius of 5.00 {\rm m} . The wheel completes one revolution every 31.5 s What is the average speed of a rider on this Ferris wheel? If a rider accidentally drops a stuffed animal at the top of the wheel, where does it
asked by Todd 
physics
The two masses in the Atwood's machine shown in the figure are initially at rest at the same height. After they are released, the large mass, , falls through a height and hits the floor, and the small mass, , rises through a height . Find the speed of the
asked by meera 
physics
Two blocks are connected by a very light string passing over a massless and frictionless pulley (the figure ). Traveling at constant speed, the 20.0 block moves 70.0 to the right and the 12.0 block moves 70.0 downward.During this process, how much work
asked by john 
english
I have to edit the following sentences to untangle mixed constructions. Here is the list of five and my corrections below them. 1. Early diagnosis of prostate cancer is often curable. 2. Depending on our method of travel and our destination determines how
asked by Roger 
Calculus
Diffentiate the function F(x)=(1/2x)^5 My answer is 5/2x^4. The book says 5/32x^4. what am I doing wrong?
asked by Eileen 
algebra
How is doing operations—adding, subtracting, multiplying, and dividing—with rational expressions similar to or different from doing operations with fractions? Can understanding how to work with one kind of problem help understand how to work another
asked by Anonymous 
Physics
The higher the energy level occupied by an electron in the hydrogen atom, the larger the atom. The diameter of the atom is proportional to n2, where n=1 labels the lowest or “ground” state, n=3 is the third state, and so on. If the atom’s diameter is
asked by Richard 
English
I still have a last question: In the reading comprehension the sentence is " When we went to complain to the travel agency, as a compensation for all the incovenience we had been caused, they offered us a weekend for two in Rome organized by the same tour
asked by Franco 
geometry
True or false? a!(b!c!) = (a!b!)c! I think its true...?
asked by Jenny 
physics
A runner dashes from the starting line (x = 0) to a point 80 m away and then turns around and runs to a point 39 m away from the starting point in 23 seconds.What is the runner's average velocity in the previous problem?
asked by Anonymous 
physics
carts of a roller coaster are travelling 5m/s over the top of the first hill. If there is no energy loss due to friction and the hill is 50m high,what speed will the carts have at the bottom
asked by seth 
american government
Campaign spending tends to be greatly more important: a)for Republican candidates b)for Democratic candidates c)for candidates in urban areas than candidates in rural areas d)for challengers and nonincumbents rather than incumbents IS d CORRECT
asked by vedrana 
managerial economics
Suppose that the demand curve for beans is given by: Q=20P Where Q is thousands of pounds of beans bought per week and P is the price in dollars per pounds a. How many beans will be bought at P=0 b. At what price does the quantity demanded of beans become
asked by Mishal Almandhour 
college
If a man leans over a cliff and throws a rock upward at 4.9 m/s. Neglecting air resistance, what is the rock's speed one second later?
asked by Gwen 
managerial economics
Explain the relationship between product X, product Y and product Z or the properties of each according to the following statements a. Cross price elasticity between X and Y is 4 b. Cross price elasticity between X and Y is 12 c. Cross price elasticity
asked by Mishal Almandhour 
social studies
For children who are learning English as a second language. contextembedded activities enhance?
asked by D 
English
1. I'd better get going. (What is the meaning of 'get going'? What other expressions can we use?)
asked by rfvv 
managerial economics
Explain how the following events might affect the market demand curve for prime filet mignon a. A fall in price of filet mignon because of decline in cattle prices b. A general rise in consumer's income c. A rise in the price of lobster d. Increased health
asked by Mishal Almandhour 
managerial economics
1. Calculate the demand elasticity of demand ( by using at least two methods) given the following information: P1 = 10 Q1=100 P2 = 15 Q2 = 20 Is the product elastic or inelastic?
asked by Mishal Almandhour 
managerial economics
2. Decide whether the following product is normal, inferior, or luxury. Explain how you can find that? a. Income increases by 20% and quantity decreases by 30% b. Income decreases by 20% and quantity decreases by 30 % c. Income decreases by 20% and
asked by Mishal Almandhour 
Calculus
Differentiate the function f(t)=1/4(t^4+8). My answer wa 4t^3. The book says t^3. What am I doing wrong,
asked by Eileen 
alg
Solve: 2 / x  1  3/4 = 5 / x  1 a) 2 b) 2 c) 3 d) 3
asked by sean 
US History II
Would anyone consider the inauguration of a president a movement, trend, or activities in economics?
asked by Amy~ 
college algebra
how to solve this problem. Completing the square. Find the value of a such that u^28u+a is a perfect square
asked by CJ 
college Algebra
Diameter of a circle.If the diameter of a circle is 1.3x10^12 meters,then what is it's radius?
asked by Lisa 
Physics
An electromagnetic wave has an electric field strength of 145 V/m at a point P in space at time t. A parallelplate capacitor whose plates have area 0.109 m2 has a uniform electric field between its plates with the same energy density as the answer to part
asked by Drew 
Business
Discuss the law of supply and demand. Do people follow this law? Why or why not? Provide specific examples. How are the prices set for the goods and services people consume? What control, if any, do you have as a consumer?
asked by Anonymous 
Math
(root2 + root3)^2 simplify
asked by Adeola 
physics
two equally charged plates with finite length l is positioned side by side (parallel) and separated by distance d. what is the electric field intensity between the plates?
asked by alex 
algebra 1
how do you solve the following questions using the substitution method? 3xy=3 3x+6y=48 3x5y=21 5x+6y=32 2x+4y=12 4x+16y=8
asked by no one needs to know 
Statistics
Why is it useful to know about the shape of set of numbers?
asked by Anonymous 
physics
carts of a roller coaster are travelling 5m/s over the top of the first hill. If there is no energy loss due to friction and the hill is 50m high,what speed will the carts have at the bottom
asked by seth 
English
Obviously, the police will use force if you do not cooperate. Is this grammatically correct? I need to write a sentence to show how a comma should be used after introductory words or groups of words.
asked by Molly 
grammar
The informant, who will not be named, called in a tip last night informing police officers about an attempted robbery. The cold, dry, and ruthless wind lashed at their bare hands and faces. Are these sentences grammatically correct?
asked by Kristin 
Physics
Describe alpha, beta, and gamma rays. What exactly is each ray composed of? What are their characteristic radiation characteristics?
asked by Richard 
Websites for Third Grade
Can you give me some websites to study for 3rd grade is these areas? Social Studies,English Language Arts, Math,Science
asked by ☻ Vanessa Sarafina ☻ 
Math
125489709/31472=?
asked by ☻ Vanessa Sarafina ☻ 
Prezident
Who was the 1st president America,how long?
asked by Zinat Ashwira 
Math
Find all integer roots of f(x). Identify any double roots. f(x) = 2x4 + 11x3 + 13x2  11x  15
asked by Taylor 
Math
Find all integer roots of f(x). Identify any double roots. f(x) = 3x4  16x3 + 31x2  26x + 8
asked by Taylor 
English
Classes have also started at music school now. I go twice a week for piano. I'm continuing my tennis lessons. Oh yes, I've been moved up to the "older" group in tennis. Wednesdays I go to Auntie Mike's for English lessons. Tuesdays I have choir practice.
asked by rfvv 
Nice???
w w w . a r t i s t s h e l p i n g c h i l d r e n . o r g / k i d s c r a f t s a c t i v i t i e s b l o g / 2 0 0 9 / 0 6 / t h e  h a n d b a g  a d d i c t i o n  s t a r t s  e a r l y  w i t h  a  f e l t  p u r s e /
asked by ☻ Vanessa Sarafina ☻ 
Math (Algebra)
I do not understand the following question or what to do to figure out the answer. Can anyone help explain this to me? Thank you. Describe what the graph of interval [4,10] looks like?
asked by Lynn 
grammar
Can someone please check the errors I have noted and let me know if they see more? I am supposed to find 20 errors but can only find 15!! Please help. The correction is in parentheses. Why are great numbers of students choosing to pursue their college
asked by Lily 
gometry
[3.05] In, angle C is (7x  3) degrees and segment AB = (3x + 12)mm. Part a. What value of x would make equilateral? Part b. What is the perimeter or sum of the lengths of the sides of the equilateral triangle? Be sure to include the unit of measure in
asked by nina 
american government
Ideological groups are distinct from single issue groups in a. the number of issues with which they are concerned. b. the intensity of their members’ opinions. c. their tendency to get involved in election campaigns. d. that members do not seek to
asked by vedrana 
physics
A 1.9 block slides down a frictionless ramp, as shown in the figure. The top of the ramp is = 2.1 above the ground; the bottom of the ramp is = 0.40 above the ground. The block leaves the ramp moving horizontally, and lands a horizontal distance away.
asked by meera 
college Chemistry
what is the amount of heat lost in KJ for 50 ml of water going from 70.0 degrees C to 1.0 degrees?
asked by DD 
MATH HELP!!!
Given a right triangle with a side of length 4 and a hypotenuse of length 7, find the measure of the two acute angles. (Round to the nearest hundredth.)
asked by Taylor 
chemistry
How to Convert 1 ton Of Steam (Pressure 24Kg/cm2) and ( Temperature 320 C) to K Mol?
asked by Ahmed ALBoaimi 
teaching
can someone start me off or tell me how to start a narrative form of code of ethics. thanks in advance and happy holiday weekend.
asked by crystal 
AED 201
What steps are necessary to get you to your goals? What obstacles might you foresee and how will you overcome them? o What is one principle from the INTASC that you feel you must improve the most to be effective in the education profession? What existing
asked by Anonymous 
Geometry
B is the midpoint of Symbol for segment A C. . AB=5x+2 AC=12x2 What is the value of BC? Show your work for credit. Line segment A C with point B on it.
asked by Ash 
Public High School AP Biology
I got a question that comes from the 1990 released test #61 that I'm completley lost on 61. In a population that is in HardyWeinberg equilibrium, the frequency of a recessive allele for a certain hereditary trait is 0.20. What percentage of the
asked by Kate 
xacc 280
If there has been anyone that has taken this class could get a little help. I am not looking for the answers just some more info. I am not understanding it. Instructions For each of the three situations, say if the accounting method used is correct or
asked by Tracie 
English
Can you please tell me if I can include these questions (as they are) in a reading comprehension? Was the hotel in Mexico City as they expected it to be? How long was the flight delayed the day they left? What did the travel agency offer them a
asked by Franco 
physics
consider a solid metal ball with radius r and charge q. what is the electric field intensity at the center, anywhere inside the ball and anywhere outside the ball?
asked by alex 
Physics
A certain freely failing object requires 1.70 s to travel the last 20.5 m before it hits the ground. From what height above the ground did it fall?
asked by AMY 
Grammar
This sentence: Without fully understanding the company's objectives. Should I use understand or understanding?
asked by Anonymous 
chem 121
how many grams of mgcl2 are contained in 255 ml of a 0.650M solutuin
asked by ngugi 
math
for a strict triangular form, does it has to be in I matrice or just the main diagonal entries are all 1]\
asked by eng 
cpu
lim x infnitive (4x1/2x+9)
asked by ABC 
Chemistry
Hello, we recently did a lab in our chemistry class to analyze an Unknown amount Calcium Carbonate which was titrated with EDTA. Our titration results were: mass of the unknown CaCO3 was 0.172 g and the mL of EDTA added was 30.7. How do I find the percent
asked by Anna 
Chemistry
How many calories would be required to raise the temperature of 25.0 g of lead by 55.0 degree Celcius?
asked by CMR 
English
Can you tell me if it is correct to divide the two sentences this way? We really liked those places. Unfortunately, we didn't have any guide with us even if our brochure clearly said that an experienced guide would have accompanied us throughout our tour.
asked by Franco 
English
I really need to know if these sentences are OK. Thank youin advance. 1)What did the tour include? It included flights, full board accommodation and guided tours. 2)How long was the plane delayed the day they left? It was delayed till the next day. 3)Was
asked by Franco 
accounting
On January 2, 2006, Grant Corporation leases an asset to Pippin Corporation under the following conditions: 1. Annual lease payments of $10,000 for twenty years. 2. At the end of the lease term the asset is expected to have a value of $2,750. 3. The fair
asked by LILIANA 
Calculus
Find those values of x at which the tangent line is horizontal to the curve y=xsqrt22cosx
asked by Eileen 
science
An irregularly shaped object has a mass of 67.5 If it is places into a graduated cylinder containing 50.0 ml water and the water level rises to 75.0 ml,what is the density of the object?
asked by Anonymous 
English
Thank you very much for your correction. Can you tell if this sentence is possible? 1) We really liked those places but unfortunately we didn't have any guide with us even if our brochure clearly said that an an experiences guide would have accompanied us.
asked by Franco 
earth and sun
express the distance of the earth from the sun using exponential notation
asked by grade 5 student 
Calculus
differentiate the function R(x)=sqrt(10)/x^7
asked by Eileen 
grammar
Could you please check the grammar in these sentences? Thanks. It was clearly her, right from the start. These are they, if I'm not mistaken. It always appeared to be them whenever there was trouble. The penalty against them brought coach Henson and I
asked by Jake 
Math
Use the following table of values to estimate the area under the graph of f(x) over [0, 1] by computing the average of R5 and L5. Table: x: 0 0.2 0.4 0.6 0.8 1 f(x): 51 48 46 43 41 38 I need help with this problem.
asked by Jason 
alg
In a permutation a) the selections are independent b) some items will never be used c) the order matters d) there must be at least 3 things to choose from
asked by sean 
Math
Find the general antiderivative of f (x) and check your answer by differentiating. f(x) = x^5 + 9 Need Help.
asked by Jason 
MATH
Evaluate the indefinite integral. (Use theta for ƒÆ.) ç(8ƒÆ + cos(7ƒÆ))dƒÆ Ans: blank + C C is constant. How do I evaluate it?
asked by Jason 
government
yellow journalism, explain how the media may or may not influence American foreign policy? Basically, what affect can the media have on the government’s decisions?
asked by Amanda 
chemistry
assuming the density of a 5% acetic acid solution is 1.0 g/mL, determine the volume of the acetic acid solution necessary to neutralize 25.0mL of 0.10 M Na)H. Also record this calculation on your Report Sheet.
asked by Thaddeus 
Anatomy 2
In reference to high blood pressureas a result in changes in the PNS and the SNS list two effects on the heart and one on blood vessels.
asked by tina 
Statistics
The values 2.0, 3.7, 4.9, 5.0, 5.7, 6.7, 8.5, and 9.0 What is the median? 5.7 what is the mean?5.4 What is the mode?0 What is the range? But I am not sure how to find it????
asked by Anonymous 
Statistics
In a Gallup poll of 1038 adults, 540 said that secondhand smoke is very harmful. What is the percentage of adults who said secondhand smoke is very harmful? I am not to sure how to find the anwser???
asked by Anonymous 
Statistics
Why is it useful to know something about shapes of a set of numbers?
asked by Anonymous 
Statistics
What is use to measure central tendency in healthcare?
asked by Anonymous 
Geometry
The side of a square measures 3 cm. What is its area?
asked by bob 
Math
Why is it useful to know about the shape of set of numbers?
asked by Anonymous