Questions Asked on
July 15, 2011

math
Calculate the consumers' surplus at the indicated unit price p for the demand equation. HINT [See Example 1.] (Round your answer to the nearest cent.) p = 150 − q; p = 30
asked by louis 
chemisrty
Consider the reaction between sodium metal and chlorine gas to form sodium chloride (table salt). 2Na(s) + Cl2(g) 2NaCl(s) If 3.6 moles of chlorine react with sufficient sodium, how many grams of sodium chloride will be formed?
asked by amy 
science**
many birds eat butterflies for food. however, the monarch butterfly has a bad taste and is therefore avoided by birds. the viceroy butterfly looks very much like monarch butterfly, but it does not taste bad to the birds. tiger swallowtail butterflies do
asked by Anonymous 
chemistry
How many grams of KMnO4 should be used to prepare 2.00 L of a 0.500M solution?
asked by ashley 
Calc
When pi/2
asked by Leanna 
chemistry
What volume of 0.25M solution can be made from5.0 gof KCl?
asked by ashley 
chemistry
How many grams of CuCl2 are required to make 75 mLof a 0.20M solution?
asked by ashley 
science**
which of the following situations would be mist similar to an electrical current passing through a metal wire in a closed circuit? A. hot water moving through a pipe B. an automobile traveling through a tunnel C. an airplane flying through clouds D. a
asked by Anonymous 
science**
what is the best course of action to follow after receiving a preliminary weather advisory of hazards such as tornadoes, hurricanes, or serve storms? A. evaluate your home after disconnecting water and gas lines B. move into a basement or cellar with
asked by Anonymous 
science**
which of the following situations would be mist similar to an electrical current passing through a metal wire in a closed circuit? A. hot water moving through a pipe B. an automobile traveling through a tunnel C. an airplane flying through clouds D. a
asked by Anonymous 
science: chemistry
How much faster will neon effuse than krypton, given that the molar mass of krypton is 83.8 grams and that of neon is 20.18 grams?
asked by Jane Doe 
MathAlgebra 1
Pablo has scored 64, 77, and 82 on his previous three tests. What score does he need on his next test so that his average (mean) is 79?
asked by EmilyS. 
science
The specific heat of solid gold is 0.13J/gC.How much heat is needed to raise the temperature of 25.0g of gold from 23C to its melting point at 1063C
asked by Toni 
Math
Write the compound statement in symbols. Let r = The food is good, p = I eat too much, q = I'll exercise. If the food is good and I eat too much, then I'll exercise.
asked by Jen 
Resources for Educating young Children Part 2
I was wondering if someone could please help? My questions are: 5. Which one of the following statements about adapting a curriculum to children with learning differences it true? a) when teaching mathematics, always try to relate the concept to its use in
asked by beth 
reading
lines 44, 48, 54, and 60: 44It had to smell like oil, like metal and often like the sacks of fertilizer stacked in the back room 48it had to have unstained wood floors, sometimes sprinkled with sawdust, and high cabinets bolts, screws, nails, and small
asked by Anonymous 
Math
An artifact was found and tested for its carbon14 content. If 88% of the original carbon14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon14 has a halflife of 5,730 years. ? yr
asked by Lee Ann 
algebra II
$9000 is invested at 8% compounded quarterly. In how many years will the account have 20) grown to $11,000? Round your answer to the nearest tenth of a year.
asked by Anonymous 
Chemistry
which of the following quantities is not required to calculate the amount of heat energy required to heat water from 25^OC to 55^OC? Athe mass of water sample. Bthe initial temp. Cthe heat of vaporization for water. Dthe final temp. Ethe specific heat
asked by John Height 
englirsh
what is the function of the expression what made her choose me
asked by ridwan 
Physics
A 10kg ball ‘A’ moving at a speed of 8m/s collides with a 20 kg ball B initially at rest. After The collision, the balls A and B move along the direction of 30 & 45 respectively with the initial direction of motion of A. Find the final speed of balls A
asked by Shrawan 
Physics
A centrifuge is a device in which small container of material is rotated at a high speed on a circular path. Such a device is a used in medical laboratories, for instance, to cause the more dense red blood cells to settle through the less dense blood serum
asked by Kelli 
College Algebra
A farmer has 100 yeards of fencing with which to enclose two adjacent rectangular pens both bordering a river. The farmer does not need to fence the side with the river. What should the dimensions of the two pens together (a rectangle) be in order to yield
asked by Melanie 
MathAlgebra 1
The price of a gallon of unleaded gas has dropped to $2.80 today. Yesterday's price was $2.87 . Find the percentage decrease. Round your answer to the nearest tenth of a percent.
asked by EmilyS. 
biology
in what way are chloroplast and mitochondria
asked by flash 
science: chemistry
When a sample of potassium nitrate is heated, oxygen gas is produced. This gas, collected in a 750 milliliter flask, has a pressure of 2.8 atmosphere and the temperature is recorded to be 53.6°C. How many moles of oxygen gas are produced in this reaction?
asked by Jane Doe 
Chemistry 2
An aqueous solution of CuSO4 has a density of 1.3g/ml and is 1.16 molal. Calculate the Molarity of this solution.
asked by Kelci 
Organic Chem
You have a bottle of cyclohexane and a bottle of cyclohexene, but they are unlabelled. Which of the following reagents would be the best choice to use to distinguish which was which? a. KOH/H2O b. KOH/CH3OH c. CH3ONa/CH3OH d. CH3CH2ONa/CH3CH2OH e.
asked by Carol 
Math
Divide and Check 4x^4y8x^6y^2+12x^8y^6 _______________________ 4x^4y
asked by Ms.Ellis 
Physics
In successive experimental measurements, the refractive index of a glass turned out to be 1.54, 1.45, 1.53, 1.56, 1.44, 1.54. Calculate: i. Mean refractive index ii. Mean absolute error iii. Fractional error iv. Percentage error
asked by Shrawan 
Math
Determine which, if any, of the three statements are equivalent. Give a reason for your conclusion. I) If the garden needs watering, then the garden does not need weeding. II) Either the garden needs watering or the garden does not need weeding. III) If
asked by Jen 
Physics
A centrifuge is a device in which small container of material is rotated at a high speed on a circular path. Such a device is a used in medical laboratories, for instance, to cause the more dense red blood cells to settle through the less dense blood serum
asked by Kelli 
biology
How is bacterial cell different from an onion peel cell ?
asked by flash 
Health
I am having trouble understanding this. I am writing a paper on childhood obesity and I am to cover the following: Ethical and legal considerations How population characteristics influence vulnerability. Could you put in simpler terms. Thank you.
asked by Casey 
Physics
A horse pulls on a crate with a 1,000 N force, causing it to move at constant velocity. What is the acceleration of the cart? A 44kg child steps onto a scale. What is the magnitude of the force that the scale exerts on the child
asked by Kandi 
Algebra
An initial investment of $1000.00 is appreciated for 5 years at 15% interest compounded semiannually. How much money is in the account after the period ends?
asked by Kim 
Math
Find the number of decibels for the power of the sound. Round to the nearest decibel. A rock concert, 5.19 106 watts/cm2 D= ? db
asked by Lee Ann 
Physics
An automobile travelling with a speed of 60km/hr, can apply brake to stop within a distance of 20m. If the car is going twice as fast then calculate the stopping distance and stopping time? (b) Given R1 = 5.0 ± 0.2 and R2 = 10.0 ± 0.1. calculate the
asked by Shrawan 
math
can please somebody check my answer: Q. A tuning fork produces a sound that has a wavelength of 136 centimetres. What is the frequency of the tuning fork? (Take the speed of sound to be 340 metres per second.) A. f= velocity/wavelength f= 340/1.36 f=250Hz
asked by Roger 
Physics
A charge q =+ 4.11 x 10  9 C is placed at the origin, and a second charge equal to 2q is placed on the x axis at the location x = +1.00 m. (a) Find the electric potential midway between the two charges. (b) The electric potential vanishes at some point
asked by Chloe 
Math
Determine the exact value of: sin30° + cos225° + sin150° + cos330°
asked by Kate 
geometry
triangles ABF and EDG are congruent. triangles ABF and GCF are equalateral. AG = 24 and CG = 1/5 AB. find the total distance from A to B to C to D to E
asked by jordan 
Math
Create a Euler diagram to determine whether the syllogism is valid or invalid. Some musicians stay up late. Greg is a musician. Greg stays up late.
asked by Jen 
Math
Determine which, if any, of the three statements are equivalent. I) If the carpet is not clean, then Sheila will run the vacuum. II) Either the carpet is not clean or Sheila will not run the vacuum. III) If the carpet is clean, Sheila will not run the
asked by Jen 
algebra 2
What will be the amount in an account with initial principal $6000 if interest is compounded continuously at an annual rate of 3.25% for 9 years?
asked by Anonymous 
MATH
2+3x10 DIVIDED BY 5x39= ????
asked by SANDY 
MATH
SIMPLIFY: 2+3x10/5x39=???
asked by SANDY 
math
Shark teeth are shape like a triangle. The height of a certain shark is 2cm longer than the base. The area is 24cm^2. Find the height and base
asked by Pebbles 
Math
Construct a truth table for (p ^q) >~q
asked by Jen 
math
Solve the following system of equations using matrices x = 2y + 6 2x + 2y = 16
asked by kailin 
biology
a student used water as a medium in a temporary blood stick. he could observe only ruptured cell under microscope. why doese this happen ? plzzzz tell flash.
asked by flash 
MATH
cos(x)=2 and sin(x)=5 Thanks for your previous answers mathmate. No. It's not a typo. I was wondering if someone could explain to me when in real life would I need to solve such problems, or similar, besides answering problems from a textbook. When ever I
asked by George 
Physics
How does an object's speed affect its aerodynamics. How can these aerodynamics be optimized?
asked by Capreeca 
Physics
A charge +Q and 2Q were placed on first and third of three very large parallel plates. The middle plate is earthed. Find the chargeon right extreem plate
asked by Arjun 
Math
Multiply: (7x2)(2x7)
asked by Ms.Ellis 
Math
The halflife of 234U, uranium234, is 2.52 105 yr. If 97.7% of the uranium in the original sample is present, what length of time (to the nearest thousand years) has elapsed? ? yr
asked by Lee Ann 
Physics
A particle of mass 1.6 x 1027 kg is revolving on a circular path of radius 10cm under the Influence of a centripetal force of 2.5 x 1012. Find out the angular velocity?
asked by Shrawan 
computers/it
20110715 18:30:34: DB Settings  ORACLE_HOME was located and set to E:\ORACLE\ORA92 20110715 18:31:04: Failed to connect to DBSettings Service instance 20110715 18:31:04: Failed to connect to the settings service, aborting login...
asked by herbert 
ethics and values
1.What is egoism? What is psychological egoism? What is the difference between the two? 2.What is the difference between utilitarianism and egoism? Need some ideas
asked by Steph 
precalc
How would you find the inverse of these two functions: f(x)=4/(x4)^2 and f(x)=x^28x+16 could you please show me step by step i have been trying to figure it out for hours.
asked by Diana 
MathAlgebra
Consider the line 9x+4y=9 What is the slope of a line parallel to this line? What is the slope of a line perpendicular to this line?
asked by EmilyS. 
218
Engage in some Internetbased research on the relationships between the technical production aspects of film and television. What specific visual film techniques do you see utilized in contemporary television
asked by meshelle 
geometry
Find m
asked by lisa 
Psychology/Statistics
For a population that has a standard deviation of 10, figure the standard deviation of the distribution of means for samples of size  3. Use the formula sqrt(N^ 2/S)
asked by Dawn 
math
List the terms, coefficients, and degree of the following polynomial: 7x^4 – 3x^2 + 5x + 2/3 Can someone help me with this please. Thank You! :)
asked by Ashley 
algebra 2
Use the properties of logarithms to evaluate the expression. 5 log5 (7x)
asked by Anonymous 
MathCONFUSING!!
Write the compound statement in symbols. Let r = The food is good, p = I eat too much, q = I'll exercise. If the food is good and I eat too much, then I'll exercise.
asked by Jen 
biology
in what way are chloroplast and mitochondria similar ?
asked by flash 
algebra
dr Jones saw 824 patients on the first year of his practice, the second year he saw 1024 patient, what would be the increase in ratio????
asked by flora morio 
algebra 2
Rewrite as a single logarithm. 5 logb m 6/5 logb n +1/3 logb j  2 logb k
asked by kyle 
Science
Were can i find a coloured diagram of a aluminumnickel electrochemical cell?
asked by Claire 
principles of management
the meaning of organizational subsitence and how it can be identified
asked by evelyne 
geometry
A square measures 18feet 6inches in length. If an octagon is inscribed in the square, then how long should each side of the octagon be?
asked by Cathy 
chen
1why should the maximum percent yield never be above 100%?
asked by lisa 
Math
Multiply: Try to recognize the type of product to be multiplying. (x4x^3)^2
asked by Ms.Ellis 
math
divide in the indicated base 2 base 3/ 120 base 3
asked by Anonymous 
science: chemistry
What is the temperature of a 100 liter container having 1 mole of an ideal gas at a pressure of 20 kilopascals?
asked by Jane Doe 
physics
Drive an expression to calculate the tension and velocity in the motion of a vertical Circle at the 1: highest point and 2: lowest point?
asked by Shrawan 
Math
If the argument below is valid, name which of the four valid forms of argument is represented. If it is not valid, name the fallacy that is represented. If I catch the bus on time, then I am not late to work. If I am not late to work, then I will get a
asked by Jen 
English
1) My sister is going to spend three weeks, from 4 August to 24 August in the USA. 2)In particular, they will be visiting Disneyworld first, then they'll be flying to Yellowstone Park and finally they will round off (?) their journey with a threeday stay
asked by Henry2 
Stats
a raw score on a particular intelligence test is known to be approximately normally distributed in a population of 4th graders, with a mean of 95 and variance 81. which score has the property that there are 15% of scores in the population that are above
asked by Jason 
arithmetic
5+(95)3(exponent)= 5+12=17 Is this right? When doing the practice problems I was getting the wrong answer. This is so simple, I don't get what I am not understanding...
asked by Anonymous 
science
is it true that When two identical waveforms of the same frequency are added together, the result will be a waveform with a wavelength that is twice that of the individual waveforms.
asked by Roger 
math
Find the first three terms of the series.
asked by AJUDE ELVIS 
algebra 2 logaithms
Use the properties of logarithms to evaluate/simplify the expression. 1. 5^log(7x) 2. 10^x + 2 log(x)=x+2 or log(x)=x2 ????
asked by Anonymous 
expo 105
true or false The students as well as their teacher are excited about the up coming trip to italy
asked by lucetia 
Math
Write the argument below in symbols to determine whether it is valid or invalid. State a reason for your conclusion. Specify the p and q you used. Either the gazebo is made of wood or the vine is growing on the gazebo. The gazebo is not made of wood. The
asked by Jen 
College Math
Given the following sets select the statement that is NOT true. A=(l,a,t,e,r) B= (l,a,t,e) C=(t,a,l,e) D=(e,a,t)E=(t,e,a) E=D E=B D=A C=A D=B
asked by Janet 
geometry
find m
asked by lisa 
MATH
FIND THE AREA OF A TRIANGLE IF THE BASE (b) IS 9 INCHES AND THE HEIGHT (h) IS = 12 INCHES???
asked by SANDY 
MATH
FIND A PERIMETER OF A TRIANGLE WHERE ONE SIDE IS 2 INCHES, ONE SIDE IS 6 INCHES, ANOTHER SIDE IS 10 INCHES???
asked by SANDY 
HSM260
Forecast personnel expenses for fiscal year 20X5 using moving averages, weighted moving averages, exponential smoothing, and time series regression. For moving averages and weighted moving averages, use only the data for the past three fiscal years. For
asked by Lisa 
Math
Fill in the heading of the following truth table using any of p, q, >, ?, V, and ^. P q _____ T T T T F F F T T F F T
asked by Jen 
Math
Construct a truth table for ~q >(p V q)
asked by Jen 
MathPlease help :(
Construct a truth table for the statement. (p ↔ q) → p
asked by Jen 
biology
1 mole of an element or compound contains 6.20 times 10 to the 23rd power atoms or molecules of the element or compound. 1 mole of an element or compound has a mass equal to its mass number (or molecular weight) in grams. For example, 1 mol of hydrogen gas
asked by melly 
anatomy and physiology 1
describle two vision disorders that cause abnormal eyeballshape.
asked by erica 
Psychology/Statistics
For each of the following samples that were given an experimental treatment test whether these samples represent populations that are different from the general population (a) a sample of 10 with a mean of 44, (b) a sample of 1 with a mean of 48. The
asked by Dawn 
algebra 2
log 5 ã5 log7 (1/49)
asked by sky 
Organic Chem
I had posted this question yesterday morning at 4:58am. Any possibility someone can help? I just completed a lab called "AcidCatalyzed Dehydration of an Alcohol: Synthesis of 2Octenes." I started with 2octanol and the lab instructions said the product
asked by Carol 
algebra
10 cm^3 of a normal specimen of human blood contains 1.2 g of hemoglobin. How many grams does 17 cm^3 of the same blood contain?
asked by tim 
Maththis 1 is confusing :(
Given p is true, q is false, and r is false, find the truth value of the statement (q ^~r) >~p.
asked by Jen 
stuck
Describe the protocols and server software for your Microsoft server environment that will enable secure file transfer uploads and downloads for your end users and secure remote terminal access for your own remote maintenance tasks.
asked by jon 
biology
in what way are chloroplast and mitochondria similar ?
asked by flash 
math
9(k17)=54
asked by flora morio 
science
if we put a branch of any plant in coloured water thenwhat happened?if it change its color then why it happened tell the reason
asked by wali