Questions Asked on
May 4, 2010

Chemistry
When 0.3212g of glucose was burned in bomb calorimeter of calorimeter constant 641J/K, the temperature rose by 7.943 K. Calculate a) the standard molar internal energy of combustion b) the standard enthalpy of combustion and c) the standard enthalpy of
asked by Nadira 
Curves defined by parameteric equations
Consider the following. x = e^t  12 y = e^2t (a) Eliminate the parameter to find a Cartesian equation of the curve.
asked by Mike 
chemistry
max electrostatic potential is where there are low electron density, does it mean that the larger the number of max potential indicates a strong acid strength
asked by bme1 
chemistry
Sodium chloride is decomposed into the elements sodium and chlorine by means of electrical energy. How many grams of chlorine gas can be obtained from 2.50 mol NaCl?
asked by anna 
chemistry
does a low dipole indicate a strong acid
asked by bme1 
math
Could you help me in solving the following problem? If x varies inversely as the square of y and x=2 when y=1 find x when y=2
asked by vidya 
Math (URGENT)
Use calculator  answer correct to 3 places. a. 3sqrt17 + 2sqrt15 / 5sqrt7 = 10.644 b. 2sqrt11  3sqrt2 + 15sqrt10 + 5sqrt5 = 61.005 c. 4.3sqrt6.9 / 1.7sqrt57 = 50.163 Can someone check my answers? I keep getting the feeling these are not the right
asked by Cody 
physics
A series RCL contains 150 ohm resistor, a 1.75x10^6F capcitor and inductance of inductor 0.035H and voltage of generator 60.0 Hz. Determine its total impedance. a) 1500 ohm b) 1900 ohm c) 1700 ohm d) 500 ohm e) 300 ohm
asked by seema 
physics
what would the speed of an observer be if a red(4.688x10^14Hz) traffic light appeared green(5.555x10^14Hz) to the observer? a) 2.219x10^8 m/s b) 4.445x10^8 m/s c) 5.548x10^7 m/s d) 8.438x10^7 m/s e) 2.890x10^6 m/s
asked by seema 
algebra II URGENT
if peter received grades of 88,83,75,and 80 on four tests in English, what is the minimum grade he has to score on the fifth test to have an average of at least 85 for the course?
asked by bev 
PHYSICS
Three small spheres are placed at fixed points along the xaxis, whose positive direction points towards the right. Sphere A is at x = 23.0 cm, with a charge of 10.00 microCoulomb Sphere B is at x = 55.0 cm, with a charge of 2.00 microCoulomb Sphere C is
asked by Jay 
chemistry
ind the partial pressure of oxygen in a sealed vessel that has a total pressure of 2.6 atm and also contains carbon dioxide at 1.2 atm and helium at 0.10 atm.
asked by jerkoff 
chemistry URGENT
What is the total gas pressure in a sealed flask that contains oxygen at a partial pressure of 0.39 atm and water vapor at a partial pressure of 0.47 atm?
asked by jerkoff 
chemistry
what happen when a solution of NaoH is add in drop and then in excess to Cacl
asked by kay 
MAth
The graph of the function y=x^3+12x^2+15x+3 has a relative maximum at x=
asked by AKilah 
geometry
Draw three different nonconvex polygons. When you walk around a polygon, at each vertex you need to turn either right (clockwise) or left (counterclockwise). A turn to the left is measured by a positive number of degrees and a turn to the right by a
asked by kristi 
algebra
Which point is a solution of the inequality 1/2x  4y
asked by letes 
algebra
A rancher is putting up a rectangular electic fence to contain some horses. The rancher has 1200 feet of electric wire. The fence needs to be at least 120 feet in one direction in order to contain the barn. Which system of linear equalities describes the
asked by letes 
Trig
Solve the equation in the interval [0•,360•] Csc theta = 1+cot theta
asked by Stacey grahaM 
college
What is equivalent to 6/7=x/y^2
asked by Anonymous 
french
le samedi, je joue ou tennis avec mon per'e
asked by david 
college
On a radio ad: “Have you been fatigued, irritable, moody? If these symptoms are ignored, you might become depressed or even suicidal! Ward off the blues by taking a pill proven to cheer you up. Millions of people have, and they’re glad they did!”
asked by Anonymous 
6th grade math
i need to write 40% as a fraction in simplest form how do i do that
asked by darlene 
chemisry
A 0.125 gram sample if a monoprotic acid of unknown molar mass is dissloved in water and titrated with 0.1003 MNaOH. The endpoint is reached after adding 20.77 ml of base. What is the molar mass of the unknown acid?
asked by janny 
physics
A block of mass m= 100kg rests on a level ground. With what force, parallel to the ground, must you push the block so that it is just ready to start sliding? The coefficient of static between the block and ground is 0.40.
asked by Dail 
chemistry
How much energy is released when 2.55kg of diethyl ether freezes?
asked by janny 
11th grade
The latent heat of vaporization of water is 540 calories/gram. How many calories are required to completely vaporize 500 grams of water?
asked by katlyn 
physics
A 0.150 kg particle moves along an x axis according to x(t) = 13.00 + 2.00t + 3.50t2  2.50t3, with x in meters and t in seconds. In unitvector notation, what is the net force acting on the particle at t = 3.45 s?
asked by Anonymous 
Physical Science
How do I write and balance this chemical equation as a double replacement reaction: K2SO4(aq) + PB(NO3)2 (aq)
asked by Carissa 
pheonix university
Please select one of the following thesis statements: 1. America's top corporations are successful for a variety of reasons. 2. Scientists have discovered human remains thought to be more than 2 million years older than Lucy, a skeleton found in Ethiopia.
asked by mark 
algebra
Rashid is helping to plan a cookout. He determines that making one making one hot dogs costs 55 cents and making a hamburger costs 90 cents. The cost must be no more than $50, and he knows that he must at least 60 hot dogs and hamburgers. Which system of
asked by wan 
microbiology
Dilution Dilution Factor Colony Count 1:10000 10000 4720 1:50000 50000 1020 1:250000 250000 194 1:1000000 1000000 23 can you tell me how to calculate the colony count of the hypothetical water sample is _______CFU per ml.Thanks!
asked by albee 
trig
use the calculator to find the trigonometric values. express your answers in tenthousandths. sin 53 degrees 30 ft
asked by trish 
general
Can you please tell me what is the Percentage of 250,800.00/2,175,000 I have 11.53% is this correct.
asked by Martha 
chemistry
Calculate the sodium ion concentration when 55.0 mL of 4.5 M sodium carbonate is added to 15.0 mL of 3.0 M sodium bicarbonate.
asked by bob 
Math
Find the area of the parallelogram that has the vectors as adjacent sides. u = i+2j+2k v = i+k I know that I have to use (2,2,2) sqrt (12)^2 + (2+2)^2 + (22)^2 = sqrt17 Area = sqrt 17. Is this correct?
asked by Abbey(Please check) 
human service
what are the most important issues for a human service agency to address in fee setting?
asked by Deb 
Intermediate Algebra
what is the meaning term rational expression Please give me an example how to divide rational expressions
asked by rosa 
physics
a blockof mass 100 kg tied to a donkey that moves with constant accelaration of 20centimeter over second squared up a 30 degrees incline. what is the force with which the donkey pulls on the block parallel to the incline? The coefficient of kinetic
asked by dai 
Maroeconomics
Question 02: Consider an economy described by the following equations: Y=C+I+G Where, Y = 6,000, G = 2,000, T = 2,000 C = 300 + 0.50 (YT) I = 2,000 – 60r In this economy, compute: a. Private saving b. Public saving c. National saving d. The equilibrium
asked by Abdul 
physics
you are riding on a 20 meter diameter ferris wheel. when your cart is at the bottom. you feel as heavy as you normally are. what is the speed of the wheel
asked by dai 
Chemistry
A solution is prepared by dissolving 15.6 g ammonium sulfate in enough water to make 100.0 mL of stock solution. A 10.00 mL sample of this stock is added to 52.00 mL of water. Calculate the concentration of ammonium ions and sulfate ions in the final
asked by Anonymous 
Algebra
How do you add or subtract rational expressions with unlike demoninators please explain with examples
asked by rosa 
Knowledge Management
Tacit knowledge, Explicit knowledge, General knowledge and Specific Knowledge are different types of knowledge. Case (A) An industrial engineer who has specialized in rust preventing techniques wants to build a car that would be resistant to the affects of
asked by Abdul 
geometry
A right cylinder has a radius of 3 and a height of 12. What is its surface area? If necessary, round your answer to two decimal places.
asked by josh 
Math
Find the angle Q between the two vectors. u = 10i + 40j v = 3j+8k cos / sqrt1700 sqrt73 cos(120/sqrt1700 sqrt73) = .9072885394 arc cos (.9072885394) = 24.86 degrees. Is this correct?
asked by Abbey(Please check) 
geometry
What is the distance between the origin and the point (5, 19)? If necessary, round your answer to two decimal places.
asked by Anonymous 
Trig
(22i)^5 find the given power write answer in rectangular form
asked by Stacey grahaM 
12th grade
A thimb is 23.0 cm from a concave mirror. The focal point is 9.0 cm. Where is the image located?
asked by Daniela 
chemistry
Calculate the molarity and mole fraction of a 2.35 m solution of acetone (CH3COCH3) dissolved in ethanol (C2H5OH). (Density of acetone = 0.788 g/cm3; density of ethanol = 0.789 g/cm3.) Assume that the final volume equals the sum of the volumes of acetone
asked by bob 
Marketing
Supposed you have been hired as a Marketing manager in a Food Supplement Company. Your company is planning to introduce Packed Branded Fresh Vegetables in the market. Selected target market for your company is Lahore. Now you are required to prepare an
asked by Royal 
chemistry
Glycerin (C3H8O3) is a nonvolatile liquid. What is the vapor pressure of a solution made by adding 180. g of glycerin to 321 mL of H2O at 39.8°C? The vapor pressure of pure water at 39.8°C is 54.74 torr and its density is 0.992 g/cm3.
asked by bob 
chemistry
A solution is prepared by mixing 0.0433 mol CH2Cl2 and 0.0623 mol CH2Br2 at 25°C. Assuming the solution is ideal, calculate the composition of the vapor (in terms of mole fractions) at 25°C. At 25°C, the vapor pressures of pure CH2Cl2 and pure CH2Br2
asked by bob 
english
What does this mean? If you are home studying…I hope you’re at least doing so outside! I am foreign exchange and I do not understand this. Thank You.
asked by Jose 
childcare
Following the nutritional label on the jar of peanut butter. you determine that 1 ounce of the peanut butter contains 115 calories and 9 grams of fat what percent of calories come from fat? A.30 b.40 c.70 d.80
asked by Nicole 
%%%%
what is the formula for finding a percentage of a dollar amount??? ex. 30 % of 233 is ??? Please help me! Thanks!
asked by abby 
childcare
Why is the incubation stage of illness of concern to day care workers? A. child in this stage require a great deal of care and special attention. B.child in this stage often need special medical help c.child in this stage can often pass on the disease even
asked by Nicole 
Physical Science
What is the apparent contradiction in the statement that "solar energy is free" with the fact that solar cells are too expensive to use as an energy source.
asked by Sue Ann 
all
What does it mean when a school has a web based curriculum?
asked by Mattie 
algebra
4 + (sqrt4) + i
asked by sam 
Calc
if the integral ( [ ) ([ f(t) ,t, 0, 8) = k Find [ (3x^2f(x^3), x, 0, 2)
asked by Lucy 
English
Can you check if these sentences are possible? Thank you for your invaluable help. 1) Remember to pick the children up at (or from?) the airport. 2) She promised she would give us a lift. She promised to give us a lift. 3) He is going to take the dog out
asked by Franco 
science
why do teachers tell u to go do some homework...and they have not taught u it huh???
asked by millie 
8th grade
1 methods of controlling fullness. 2 what is fastening. 3 uses of fastening. 4 pictures of methods of controlling fullness. 5 what is controlling fullness.
asked by georgian 
clothing and textile
1 what does disposal of fullness means
asked by georgian 
Biology
In many cases, not all of Koch's postulates can be applied to determine the cause of a human disease. Explain why.
asked by CC 
geometry
basis of a right prism is a rhombus with a diagonal 8cm and 6cm.the prism height i is 12cm.find:a)the general area of prism.b)the side of prismsusurface.diagonals cutting surfaces.c)prism volume.
asked by Anonymous 
COM 220
I have to post a topic for my final project to be accepted by my instructor. I want to write a persuasive essay about drugs. My first thought was to write about why drug users use drugs but as I research this there does not seem to be anything. Do you have
asked by Anonymous 
Calculus II
How do you integrate the function  > sinx (4^cosx) from 0 to pi/2 I did "usubstitution" to make it the integral from 1 to 0 of 4^u but then i don 't know where to go from there! Thank you
asked by Mary 
Math
Find the angle Q between the two vectors. u = 10i + 40j v = 3j+8k cos / sqrt1700 sqrt73 cos(120/sqrt1700 sqrt73) = .9072885394 arc cos (.9072885394) = 24.86 degrees. Is this correct?
asked by Abbey(Please help) 
chemistry
What is the pH of a solution that is 0.20 M CH3COOH and 0.10 M CH3COONa?
asked by curtis 
Prealgebra
Say that you have a triangle with sides a = 20, b = 48, and c = 51. True or false: this triangle is a right triangle.
asked by Olivia 
Math
use Demoivre's Theorem to find the indicated power of the complex number. Express the result in standard form. (2+2i)^6 a=2 b=2 n=6 r=sqrt 2^2 + 2^2 = sqrt8 Q=7pi/4 (sqrt8)^6 = 512 512(cos 6/1 x 7pi/4) + i sin 6 x 7pi/4 512 (cos 21pi/2) + i sin (21pi/2)
asked by Abbey(Please help) 
chemistry
a 14.7g ice cube is placed into 324g og water. calvulate the temperature change in the water upon complete melting of the ice. hint: determine how ,uch heat is absorbed by the melting ice and then use q=mc delta T to calculate the temperature change. use
asked by janny 
science
which best describe the desert? a.thick,waxy leaves b.many large leaves. c.a shallow root system.d.a tall,woody stem.
asked by kim 
Chemistry
For the reaction NaOH + HCl> H20 + NaCl where the mass of NaOH is 2g and the Volume of Hcl is 100ml with a 0.5 concentration. The initial temp is 25 and the final is 35, what is the amount of energy absorbed by the solution?
asked by Hyde 
Business Math
Date of Note March 11, length of note 200 days, Date of discount, June 28. What is the maturity date and the discount period, no leap years, exact days
asked by Kathy 
Math
Logs are stacked up in apile as shown in the figure. The top row has 15 logs and the bottom row has 21 logs. How many logs are in the stack? a1= 1+14=15 an= 7+14=21 s1=(n/2)(a1+an) (n/2)(15+21) = 18 How do I figure out the n?
asked by Abbey(Please help) 
Basic College Math
What numbers in a math problem adds up to 331/3?
asked by Ronnie 
LAL
CHECK PLEASE are theses ALL complex sentences? 1.i will help you with your homework after you watch the baby. 2. jake stared at me as if he had seen a ghost. 3.you can order whatever you want from the menu. 4.we will be on time unless there is a traffic
asked by Sara! 
Chemistry
To increase the solubility of a gas at constant temperature from 1.20 g/L at 1.4atm to 2.3 g/L the pressure would have to be increased to ______ A. 0.37 atm B. 0.7 atm C. 1.37 atm D. 2.7 atm
asked by Kathie 
business
Consider the wide spectrum of business organizations, ranging from gigantic corporations to working at home. Describe at least three types of business organizations that you are familiar with or that you would like to know more about. How is each one
asked by DC 
English
How to write a type sketch of "the healthy eater"?
asked by Danny 
Math
use Demoivre's Theorem to find the indicated power of the complex number. Express the result in standard form. (2+2i)^6 a=2 b=2 n=6 r=sqrt 2^2 + 2^2 = sqrt8 Q=7pi/4 (sqrt8)^6 = 512 512(cos 6/1 x 7pi/4) + i sin 6 x 7pi/4 512 (cos 21pi/2) + i sin (21pi/2)
asked by Abbey(Please help) 
Chemistry
Dilution calculation: use the formula M1V1=M2V2 How many milliliters of 12 M HCl would be needed to make 200 mL of a 1.0 M HCl solution? I got 16.67 mL HCl for this part but there's a secondary question. It says: How much water would be used to make this
asked by Ana 
math
A sheet of plywood measures 4 feet by 8 feet. Armand wants to build a dog house using one whole sheet of plywood for the floor. a. Armand needs to put a "2 by 4" under the outer edges all the way around the floor, and another "2 by 4" that runs down the
asked by NICK 
LAL
ARE SOME PREPOSITIONS COMPLEX LIKE USED IN A COMPLEX SENTENCE
asked by Sara! 
chemistry!
An ideal gas has a volume of 3.0 L. If the number of moles of gas and the temperature are doubled, while the pressure remains constant, what is the new volume?
asked by jenny 
Chemistry
For the reaction NaOH + HCl> H20 + NaCl where the mass of NaOH is 2g and the Volume of Hcl is 100ml with a concentration of 0.5 mol/l. The initial temp is 25 and the final is 35, what is the amount of energy absorbed by the solution?
asked by Hyde 
chemisty
How many moles of carbon monoxide form at the same time that 0.337 mol CS2 forms?
asked by jake callienf 
Chemistry(URGENT, PLEASE HELP!)
the volume of alcohol present in 620 mL of a 40% (v/v) solution of alcohol is ______? A. 372 mL B. 40 mL C. 248 mL D. 580 mL
asked by Kathie 
Environmental Science
For my environmental science reseaerch paper on coral reefs I wanted to copy this intro paragraph from my workbook: Coral reefs are the second richest ecosystem or interdependent environment on Earth. They have been called the rain forests of the oceans
asked by y912f 
matg
2/3x=4/5
asked by gorge 
math
paul did 9 tricks in 2 minutes and 15 seconds.how many seconds did each trick take?
asked by harry 
Language arts
What are the verbs in this phrase: Hawaii is one of the most beautiful places on earth
asked by Fabian 
Math
Find the center, vertices, foci, and eccentricity of the ellipse. 9x^2 + 4y^2  36x + 8y + 31 = 0 I know the center is (2,1) For the vertices I had (3,1)(1,1) and the foci (3.8,1)(.20,1) and e = 1.80 but I think these are wrong.
asked by Abbey(Please help) 
9th grade algebra
daniels print shop purchased a new printer for $35,000. Each year it depreciated at a rate of 5%. What will its approximate value be at the end of the fourth year?
asked by sophia 
Language arts
What are the verbs in this phrase: The earth has seven continents
asked by Fabian 
Please help!!!!!!!!!!! algebra
Quan is shopping. He can buy 2 pairs of pants and 1 shirt for $79.85 ( before tax is added). He can but 1 pair of pants and 2 shirt for $69.85 (before tax is added). To figure out how much a shirt or a pair of pants costs,you must first identify the
asked by Gabriel 
Calculus
Two forces, F1 and F2 act on an object and the angle between them is 60 degrees. Determine the magnitude and the direction of the resultant force FR relative to F1 if F1= 50 N and F2= 30 N.
asked by Ariza 
reading
how is U.S. water use similar to that "waterpoor" countries? how is it different?
asked by Sara! 
Calculus
A boat crosses a river and arrives at a point on the opposite bank directly across from its starting position. The boat travels at 4 m/s and the current is 2m/s. If the river is 600 m wide in what direction must the boat steer and how long will it take to
asked by Abbie 
math
Max is having a party with 38 people. He wants enough cupcakes to feed everyo.ne. If cupcakes are sold in packs of 6, how many packs will he need to buy? Put the answer in a complete sentence.
asked by Alvin 
Calculus
A car is heading northwest at 80Km/h and a truck is heading east at 60 Km/h. Determine the velocity of the truck relative to the car.
asked by Bobby 
Calculus
A pilot wishes to reach an airport 350 Km due east from his present position. The wind is blowing from N25degreesE with a speed of 80 Km/h and the planes airspeed is 400 Km/h. What ground speed and what heading should the pilot steer to reach the airport?
asked by Ariza 
french
How to answer the question: Estce que vous amis vous ont telephone?
asked by Michael 
child pahcology
I need help understanding Erickson's first five stages. I need examples of them to help me write a paper.
asked by Tammera 
child psychology
I need help understanding Erickson's first five stages. I need examples of them to help me write a paper.
asked by Tammera 
History/9th grade
I am trying to understand and I hope you can help me. I just want some more explaintion about the great depression. Why do people call it a leveler? I heard some kids over at the table next to me at lunch today. Like I said I just want to know. I am
asked by Nanci 
math
A fund drive announced that it has raised $3276, which is 70% of its goal. How much more must be raised?
asked by Anonymous 
Earth Space Science
What type of motion would have to occur to move or displace the fixed color lines produced by a gas like helium or hydrogen toward the 400 nanometer mark on the spectrum scale?
asked by Paige 
Math
Eliminate the parameter and write the corresponding rectangular equation whose graph represents the curve. x = sec Q y = cos Q x^2 + y^2 = 1/cos^2 + sin^2/cos^2 = x^2(1 +sin^2) = x^2(2cos^2) x^2(21/x^2) = 2x^2  1 x^2  y^2 = 1 My teacher said to use
asked by Abbey 
math
How can you use the multiplication facts for 3 to help you find the Multiplication facts for 9?
asked by Brianna S. 
Great Depression and Great Leveler/History
Hi, I just want to know if I am correct on my answer about the Great Depression and Great Leveler. I wrote, "The reason why it was called the Great Leveler was because every person was affected regardless of race and gender. Americans underwent many
asked by Lauri 
english 8th grade PLEASE HELP!!!
How can you identify a verb/verb phrase, and how can you tell if it is present, past, future, pres. perf., past perf., future perf.?
asked by May 
science
What is an ion?
asked by Karishma 
Paralegal Studies
I am doing a research project for Business Law 2 from Penn Foster. has anyone done th perticular assignment? i cannot figure out the first part about corporations, nonprofit, and limited liability companies?
asked by Sarah 
To SraMcJin
Sra, I want to thank you for all your help on my English poetry. You really are good at poetry. Thank you very much, I really appreciate it:)LOL
asked by Sara 
HIstory
How did the Industrial Revolution impacted American Society economically, socially, politically, and morally.
asked by Zack 
math
What is the unit price of 5 for $2.50
asked by Gio 
English
Recall an event when you became aware of the importance of dividing chores evenly and fairly without being influenced by gender. Can someone please explain this a little more clearly to me, I kind of get what it says, but I am not able to remember about
asked by Sara 
biology
explain and illustrate how the longterm survival of a species depends on resources that may be limited from time to time
asked by Tooba 
math
what is a fraction between 1/3 and 2/3?
asked by Joe 
CHEMISTRY
2H20(l) = 2H2 (g) +O2 (g) For the above, if 1.50 mg of water is decomposed, what mass of hydrogen is procduced? (1 mg=10^6g=1 metric ton)? I came up with 0.1678475161 and rounded it to .17 mg H2. Am I on the right track and did I include the correct amount
asked by Carli 
Grade 10 math
Expand and simplify : (x+6)^2 (b+9)(b9)
asked by raman 
Chemistry
NH3(g) + 2O2 (g) = HNO3 (aq) + H2O (l) How do I calculate the oxidation states of Nitrogen and figure out if it is reduced, oxidized or neither? My answer is below. I am not sure if I am figuring it right. Please advise. NH3(g) + 2O2 (g) = HNO3 (aq) + H2O
asked by Carli 
trigonometry HARD!!
An airplane flies due north from a starting point at 234.6 mph for 40 minutes. Then turns flying 20 minutes at 252 mph in the direction N 20 degree 31 minutes East. How many miles is the airplane from the starting point?
asked by jake 
Chemistry
a solution is prepared using .015 L of 1.0 M HCl and .020 L of .50 M HNO3. the final volume of the solution is 1.25 L. Answer th following questions. a)what are the [H3O+] and [OH] in the final solution? b)What is the pH of the final solution?
asked by Alexa 
Math
What is 54.9*10 to the 6th power in scientific notaion
asked by Caitlyn 
Chemistry
Geraniol is a compound found in rose oil that is used in perfumes. What is the molas mass of geraniol if its vapor has a density of 0.480 g/L at a temperature of 260.0 degrees Celsius and a pressure of 0.140 atm???
asked by Meg 
world history
Given the location of the Alps, how might they have been both a help and a hindrance to the development of Italy?
asked by Tyson 
Physics
Could someone please tell me what equations i am suppose to use to work out these problems. A capacitor in RC circuit has two overlapping plates of width 3.40 m and length 8.90 m separated by 2.60 cm. A dielectric of dielectric constant being 73.0 fills
asked by Sam 
English
Describe a memorable teacher who had a significant positive effect on you. There hasn't really been any teacher in high school like that. But, in elementary school I had quite a few. Once it was in grade one, I had to go to the hospital for a couple of
asked by Sara 
hcr 230
post a 150300word response to the following discussion question by clicking on Reply. Explain whether or not you believe Medicare’s eligibility limitations are reasonable in scope.
asked by Anonymous 
mgt
what is evauation of objectives?
asked by me 
mgt
what is evauation of objectives?
asked by me 
chemistry
What is the molarity of H3O+ in a 4.97×102 M NH4Cl solution that hydrolyzes according to the equation. NH4+(aq) + H2O(l) = H3O+(aq) + NH3(aq)
asked by uci student 
mgt
what is evaluation by objectives?
asked by me 
mgt
what is evaluation by objectives?
asked by me 
English
Can you check once more how I paraphrased the beginning of the Canterbury Tales, please? Thank you in advance. 1) He describes rain as “sweet showers fall “ which “pierce the drought of March to the root”. Paraphrase: he describes the gentle spring
asked by Franco 
Chemistry
A potassium hydroxide solution has a pH of 12.90. Enough cid is added to react with half of the OH ions present. What is the pH of the resulting solution? Assume that the products of the neutralization have no effect on pH and that the amount of
asked by Alexa 
English 9 grade
HOW COULD I CREATE A SENTENCE USING THREE ADJECTIVES A SUBJECT A HELPING VERB A VERB AND AN OBJECT OR A PREDICATE NOUN?? AND ALSO PUTTING THE SENTENCE IN A SENTENCE DIAGRAM.
asked by marelyn 
mgt
what is evaluation by objectives?
asked by me 
mgt
what is evaluation by objectives?
asked by me 
MATH I
x^2 + 5x +6/ x^2  3x 10 How do I do this? Is it asking me to divide? The answer choices are as following: A)x + 3/ x  5 , x ≠ 5 B)x + 3/ x  5 , x ≠ 2, 5 C)x2 + 5x + 6/ x  5 , x ≠ 5 D)x2 + 5x + 6/ x  5 , x ≠ 2, 5
asked by Tallie 
mgt
what is evaluation by objectives?
asked by me 
English
I forgot to include the following sentences. I hope you can have a look at them as well. 1)Chaucer describes his appearance and profession. The merchant is a representative of the new emerging middle class in English medieval society. 2) Chaucer also wants
asked by Franco 
mgt
what is evaluation by objectives?
asked by me 
Grade 10 math
Expand and simplify: 5(2x +5b)^2
asked by raman 
6th grade
If today is Tuesday, what integer stands for last Sunday?
asked by Erica 
Chemistry
what pH values can be assigned to acids and bases respectively?
asked by Alexa 
Chemistry
What is the molar solubility of silver sulfide, Ag2S? (Ksp for Ag2S is 6.0 x 10^51.)
asked by Dan 
economics
an accurate statement about the great depresson is
asked by gina 
Chemistry
The S^2 ion is a relatively strong base with an equilibrium constant of 7.7x10^1. What is the Ka value for HS ? I got the equation HS^ H^+ + S^2. Am I able to find [S^2] with the Keq?
asked by sh 
science
What are the two processes that use oxygen?
asked by tyson 
Chemistry
Is 20.0 mL of 3.0 M HF a buffer solution with an approximate pH of 3?
asked by Dan 
Math 9th grade
x^2 + 5x +6/ x^2  3x 10 How do I do this? Is it asking me to divide? The answer choices are as following: A)x + 3/ x  5 , x ≠ 5 B)x + 3/ x  5 , x ≠ 2, 5 C)x2 + 5x + 6/ x  5 , x ≠ 5 D)x2 + 5x + 6/ x  5 , x ≠ 2, 5
asked by Nat 
6th grade
how do you scale down 46x24 picture to fit 6x4 post card
asked by Anonymous 
Science
How is cell division responsible for growth. Could someone please tell me how it is responsible for growth clearly, thanks:)
asked by Sara 
science
Why do animals ( in the water) (fresh) need plants??? Why is it important ?
asked by Ashley 
Chem
Write 2 separate balanced equations for the neutralization reactions of hydrochloric acid with sodium hydroxide and acetic acid with sodium hydroxide......i never get how to do that!
asked by Alexa 
Science
This question I posted yesterday as well, but received no help. There wasn't any info about it in my book, so I'm wonderig if you could help me with it. Why might scientists want to figure out a way to promote cell division in mature nerve cells?
asked by Sara 
Chem
How will you make a 200 mL solution of 1 mM sucrose from a 0.1 M sucrose solution? 1. Mix 20 mL of the 100 mM sucrose and 180 mL of water. 2. Mix 50 mL of the 100 mM sucrose and 150 mL of water. 3. Mix 1 mL of the 100 mM sucrose and 199 mL of water. 4. Mix
asked by Roksana 
chemistry
the specific heat of aluminum is 0.214 cal/g degrees C. calculate the heat necessary to raise the temperature of 55.5g of aluminum from 23 to 48.6 degrees C
asked by Quentin 
Stats
What is the probability that a simple random sample of 56 special orders will provide an estimate of the population proportion of special orders specifying the color black that is within plus or minus .05 of the actual population proportion,assuming p =
asked by Anon 
chemistry
calculate the amount of heat necessary ti raise the temperature of 8.5kg of water from 12.5 to 84 degrees C
asked by Quentin 
Chemistry
NaOH(aq) + HCl(aq)> H20 + Nacl(aq).. solve for the amoont of energy aborbed by the solution. (50ml of 1.0M HCl is 23deg; 50ml of 1.0M NaOH is at 25deg; mixed solutuion= 31deg pls tell me the steps to take inorder to solve the question. Thanks in
asked by Ade 
language arts
Who was Shakespeare's most famous patron and what did Shakespeare write to honor this patron?
asked by mic 
Chemistry
Is 20.0 mL of 1.0M CH3COOH and 10.0mL of 1.0 M NaOH a buffer solution of 3?
asked by Anne 
chemistry
calculate the percent composition or w/v% of 3x10 to the 2nd power mL solution containing 15g of glucose
asked by Quentin 
chemistry
convert 353 torr to atm
asked by Quentin 
chemistry
calculate the pressure in atm of a balloon filled with 7.5g of helium gas if the baloons volume decreases to 7.5L suppose the balloons pressure and volume are originally 799 mmHg and 15L
asked by Quentin 
Chem
Compared with a pH of 7, a solution of pH 5 has what times/fraction of the hydrogen concentration? 1. 1/100 2. nearly the same concentration 3. twice 4.5/7 5. 100 times
asked by Roksana 
biology
Explain why a person should believe that all life that currently exists on planet earth evolved from a simple, common ancestor through the process of mutation, natural selection, sexual selection and genetic drift.
asked by Terrance 
chemistry
if 429 grams of gas occupies 25.6L at 49 degrees C at a pressure of 759 mmHg what volume will 4.29g of gas will occupy at 53 degrees C (assume pressure is unchanged)
asked by Quentin 
chemistry
calculate the number of moles there are when a gas occupies a volume of 3.95L at 37 degrees C and .985 atm
asked by Quentin 
chemistry
what is the density of O2 gas at STP
asked by Quentin 
Chemistry
What is the mass of NaOH required to prepare 100.0mL of NaOH(aq) that has a pH = 13.62 ? A. 0.38g B. 0.42g C. 1.67g D. 2.40x10^14 g OH + H2O H3O+ + O^2 antilog13.62 = 0.09976 #gNaOH=(0.10.09976)M x 40g/mol x 0.1L = 0.40g?
asked by sh 
Chemistry
0.1 mol NaCl + 0.1 mol KCl would produce a buffer solution if dissolved in water?
asked by Michele 
English
What are the important differences between telling a story as a novel or staging it as a play?
asked by Sarah 
algebra
what the heck is the answer! "whom should yo see at the bank if you need to borrow money?
asked by sami blitzer 
L.A
How should I begin my first paragraph when I'm trying to interpret a poem? The poem is Nothing Gold Can Stay by Robert Frost.Thanks
asked by Shadow 
geometry
the perimeter of a triangle is 59 inches. the longest side is 11 inches longer than the medium side, and the medium side is 3 inches more than the shortest side. Find the length of each side.
asked by Jess 
Us constitution
what the United States may have looked like had the AntiFederalists "won" their points in the ratification debate and the writing of the Constitution
asked by Nina 
Chemistry
What is the pH of 50.0 M HF and 25.0mL of 1.0 M NaOH?
asked by Chris 
Socials
Why is there so much diversity in the interior plains region ?
asked by Kaylee 
English
If you were to adapt To Kill a Mockingbird to the stage a) what changes you make to the story? b) what events would you include? how would you stage them? c) what would you leave out? why?
asked by Sarah 
Math
I've been staring at this problem for an hour and have NO IDEA WHAT TO DO! "A quadratic function in the form f(x)=ax^2+bx+c contains the points (1,0), (0,2), and (2,0)." a) determine the values of a,b, and, c b) Factorise the expression ax^2+bx+c obtained
asked by David 
Chemistry
Which of the following will increase the molar solubiity of Ag2CO3? (The Ksp for Ag2CO3 is 8.1 x 10^12.)
asked by Jim 
Chemistry
Sorry, I didn't finish the question: Which of the following will increase the molar sollubility of Ag2CO3? (The Ksp for Ag2CO3 is 8.1 x 10^12.) a. Add HCl b. Add AgNO3 c. Add NaCN d. a and c e. a, b, and c
asked by Jim 
math
n+42=80
asked by pavleen 
math
y39=39
asked by pavleen 
math
8d=40
asked by pavleen 
Chemistry
Do strong and weak acids require equal numbers of drops of NaOH to neutralize? I THINK not....but i am not entirely sure......
asked by Alexa 
math
r2=24 is it 48
asked by pavleen 
trig
find the primary solutions. 4cos^2x3=0 and tanxtan^2x=0.
asked by Anonymous 
chemistry
What is the concentration (in % mass) of a solution in which you dissolve 200 mg of NaHCO3 in 1.0 L of water?
asked by Kiley 
Technology
I'm writing an essay, and the first page is a cover page. Obviously, there shouldn't be a number there. How do I get rid of it so that there's still numbers on the other pages?
asked by Andrew 
Math (logic)
The first day you will earn 1/10 of a penny. The second day you earn twice as much (2/10 of a cent). The third day you earn double of what you earned the previous day. This payment pattern will continue for the month. What are some formulas I could use to
asked by Ryan! 
4th grade
im upset with stressed syllables help
asked by mary 
physics
How long would it take a 1 200 W heater to melt 1.00 kg of ice at 12.0°C, assuming all the energy from the heater is absorbed by the ice? (Assume the specific heat of the ice is 2 090 J/kg · °C and the latent heat of fusion of water is 3.33 105 J/kg.)
asked by olive 
Chemistry
All of the following apply to the reaction A(g)+B(g)C(g) as it is carried out at constant temperature in a rigid container EXCEPT: A)The total pressure decreases B)The rate of reaction decreases C)The entropy of the system decreases D)The number of
asked by Sean 
math
y =13= 72/12
asked by Anonymous 
math
7n=6
asked by pavleen 
P.O.B
NAME FOUR DEPARTMENTS OF A TYPICAL BUSINESS AND ONE FUNCTION OF EACH
asked by j 
Chemistry
For the burning of propane C3H8(g)+SO2(g)3CO2(g)+4H2O(g) which of the following is true at and temperature: i./\G0 iii./\H
asked by Sean 
Math
can you please help me with $6.30 x 8.5% thanks!
asked by Erin 
Trigonometry
Find all solutions for the following equation in the interval 0 ≤ x
asked by richard 
statistics
indicate whether the given statement could apply to a data set consisting of 1,000 values that are all different. a. the 29th percentile is greater than the 30th percentile. b. the median is greater than the quartile c. the third quartile is greater than
asked by Brooke 
EA ICS course
what is the optimum size for small groups? A) 3 B) 5 C) 8 D) 10
asked by shay 
statistics
a data set consists of a set of numerical values. which of the following is correct? a. there is no mode b. there are 2 modes c. there are 3 modes I answered a there is no mode is this correct?
asked by Brooke 
Chem/Physics
"your eyes receive a signal consisting of blue light, 470nm. The energy of the signal is 2.5*10^14J. How many photons reach your eyes?"
asked by Beno 
Physics
A sample of helium behaves as an ideal gas as it is heated at constant pressure from 273 K to 373 K. If 15.0 J of work is done by the gas during this process, what is the mass of helium present? I am not sure what equations to use for this problem....
asked by Katy 
math
help with making a frequency table and histogram using intervals of 25 meters for 20 of the tallest buildings.
asked by martell 
trig1 more question
it is always true that if 1 ≤ x ≤ 1 then cos(Arccos(x)) = x Give an example showing that Arccos(cos(x))= x need NOT be true for all x
asked by richard 
Math
Find the vertex, focus and directrix of the parabola. 4x  y^2  2y  33 = 0 y^2+2y+1 = 4x+33+1 (y+1)^2 = 4(x+8.5) vertex:(1,8.5) focus:(2,8.5) Directrix: x=0 Is this correct?
asked by Abbey 
Algebra
what would be the approximation to the nearest tenthousandth log 8900 over log 110?
asked by dani 
Chemistry
Water will react most completely as an acid with A. SO3^2 B. H2BO3 C. C6H5O D. CH3COO Why isn't the answer A, since H2O + SO3^2 HSO3 + OH so H2O and HSO3 are the conjugate acids.
asked by sh 
Science
Could someone please have a moment to look at my science posts. I really need help on them. I'll appreciate all your help, thanks:)
asked by Sara 
7th grade
what is 4x=76
asked by tina 
7th grade
what is 4x=76
asked by tina 
science
According to the condensation theory, the most important factor for the formation of our planets was _____.
asked by Anonymous 
Algebra
2x^2+3x+1
asked by ashley 
us history
who helped to expand women's rights
asked by beverly 
Math
Find an equation of the parabola. vertex:(1,2) focus:(1,0) (x+1)^2 = 4p(y2) (x+1)^2 = 0(y2) (x+1)^2 = (y2) Correct?
asked by Abbey 
algebra
beth is two years older than julio.Gerald is twice as old as beth.debra is twice as old as gerald.the sum of theIr ages is 38.how old is beth?
asked by Anonymous 
Math
Use a graphing utility to graph the function. Then use the trace or table feature to identify the limit. lim 5/x2 x>2 I know I posted this question before but I am still having a hard time doing this. I pressed the y= button and typed the normal
asked by Abbey 
Science
What mammal order has the dental formula 205/105?
asked by Sean 
PreCalc
Tee Ball is similar to baseball, but the field is a diamond 40 ft square. The pitchers mound is positioned 25 ft from homeplate. Determine the distance from the pitchers mound to 3rd base.
asked by Kali 
CALC urgent please
A boat crosses a river and arrives at a point on the opposite bank directly across from its starting position. The boat travels at 4 m/s and the current is 2m/s. If the river is 600 m wide in what direction must the boat steer and how long will it take to
asked by Ariza 
Calculus
A car is heading northwest at 80 km/h and a truck is heading east at 60km/h. Determine the velocity of the truck relative to the car.
asked by Anonymous 
sentences
whats a sentence for native?
asked by priscilla Perez 
Spanish
How would you write 750 AD and 500 BC in spanish? Would it be setecientos cincuenta despues de Cristo?
asked by Anonymous 
chem
How many moles of base are needed to neutralize 2 mol of acid for HNO3 + KOH  KNO3 + H2O?. Can u show your work please:) Thanks a bunch
asked by Stacey 
us history
what question was resolved with the great compromise?
asked by rosie 
Is this algebra question right
Do you rewrite the following as an equivalent logarithmic equation yt=x as E^22=7.3891?
asked by dani 
Is this right
I need to express as an equivalent expression that is a sum of logarithms. logt 13ab2 is this right (log+13t+loga+log+b+log+2)
asked by dani 
grammar
John has become a rather good actor.
asked by tnik 
geometry
A triangle's base is 14 inches less than 2 times its height. If h represents the height in inches, and the total area of the triangle is 54 square inches, which of the following equations can be used to determine the height?
asked by Anonymous 
Precalculus
Find the limit by direct substitution. A. lim x> 5 square root cubed of x^2 2x  23. I replaced all of the x's with 5 and got 2. B. lim x> 2 (4x^2  7x) / (6x + 10). I replaced all of the x's with 2 and got 15. Go to picturetrail and type in
asked by Randy 
Math
Use a graphing utility to graph the function. Then use the trace or table feature to identify the limit. lim 5/x2 x>2 I know I posted this question before but I am still having a hard time doing this. I pressed the y= button and typed the normal
asked by Abbey(Please help) 
algebra
21+3z/2 divide 121z847/4
asked by jj 
Check Calculus
What is the sum of 3 forces in equilibrium? Is it F3 =  (F1 + F2) or 0?
asked by Ann 
Math
A large tank contains 400kg mixture of water and alcohol. The mixture is 64% alcohol by weight. At each step, 100 kg of the mixture will be drained from the tank, replaced with 100 kg of water and then stirred. After three steps, what percent of the final
asked by Zach 
Check Calculus
What is the sum of 3 forces in equilibrium? Is it F3 =  (F1 + F2) or 0?
asked by Ann 
College Chemistry
Sulfur trioxide is made from the reaction of sulfur dioxide and oxygen. how many grams of SO3 can be made from the reaction of 1.91g SO2 with 1.29g O2? 2 SO2(g) + O2(g)> 2SO3(g) a) 2.39g b) 3.20g c) 3.23g d) 4.77g e) 6.46g How would i solve this
asked by James