Questions Asked on
April 14, 2014

English
1. Imagine you are writing a research paper on social networking sites. Which of the following thesis statements would be the most effective? A. Social networking sites have become incredibly popular in recent years and have millions of members. Many of
asked by Cassie 
General Chemistry
The problem is: Calculate the standard freeenergy change for the following reaction at 25 degrees Celsius. 2Au^+3(aq) + 3Cr(s)> 2Au(s) + 3Cr^+2(aq) I worked it out, getting half reaction: Au^3+ + 3e > Au; E = 1.498 Cr^3+ + 3e > Cr; E = 0.74 Ecell =
asked by Tiffany 
English
Several __________ were left on their desks in the classroom during recess. A. students book's B. students' books C. students books' D. student's books B
asked by Angela 
Chemistry
A voltaic cell utilizes the following reaction: 2Fe3+(aq)+H2(g)→2Fe2+(aq)+2H+(aq). What is the emf for this cell when [Fe3+]= 3.70M , PH2= 0.95atm , [Fe2+]= 7.0×10−4M , and the pH in both compartments is 4.05? Express your answer using two significant
asked by Rebecca 
Chemistry
Given the following halfreactions and associated standard reduction potentials: AuBr−4(aq)+3e−→Au(s)+4Br−(aq) E∘red=−0.858V Eu3+(aq)+e−→Eu2+(aq) E∘red=−0.43V IO−(aq)+H2O(l)+2e−→I−(aq)+2OH−(aq) E∘red=+0.49V
asked by Rebecca 
Check English Answers
Please check my answers: 1)pathos 2)thesis statements 3)Lincoln promises retribution for war 4)Ethos 5)Theme 1)"On the occasion corresponding to this four years ago all thoughts were anxiously directed to an impending civil war. All dreaded it, all sought
asked by AMK 
Chemistry
Vinegar is a solution of acetic acid, CH3COOH, dissolved in water. A 4.69 g sample of vinegar was neutralized by 32.97 mL of 0.100 M NaOH. What is the percent by weight of acetic acid in the vinegar?
asked by Chris 
Math
Based on a preliminary report by a geological survey team, it is estimated that a newly discovered oil field can be expected to produce oil at the rate of R(t) = 300t^2/(t^3 + 32)+5 (0 ≤ t ≤ 20) thousand barrels/year, t years after production begins.
asked by Vanessa 
Mean, Median and Mode HELP!
Find the mean median and mode of the data set: 10 11 4 7 12 11 16 6 9 15
asked by Kirky 
chem 101
How many kilojoules of heat are needed to completely vaporize 42.8 g of C4H10O at its boiling point? Given Hvap=26.5kj/mol
asked by kim 
English III
1)“We have appealed to their native justice and magnanimity, and we have conjured them by the ties of our common kindred to disavow these usurpations, which, would inevitably interrupt our connections and correspondence.” These lines from the
asked by AMK 
English
Which of the following is a compound sentence? A. After it began to rain, he could not find his umbrella. B. They met after work for a game of tennis. C. She liked her neighbors, but she rarely saw them. D. The afternoon meeting extended into the evening
asked by Angela 
English
Juanita sent the two __________ reports to __________ yesterday afternoon. A. technicians'; headquarters B. technicians; headquarter's C. technician's; headquarters' D. technicians'; headquarters' A
asked by Angela 
Chemistry
A 0.170mole quantity of CoCl2 is added to a liter of 1.20 M NH3 solution. What is the concentration of Co2 ions at equilibrium? Assume the formation constant (Kf) of Co(NH3)62 is 5.0× 1031 M–6. I don't really know how to start. At first I thought about
asked by Alexis 
science
In the formation of the solar system nearly all of the mass of the solar nebula became ? Answer Are Terrestrial planets GAS giant SUN OORT CLOUD THANK YOU
asked by snow 
English
The main purpose of a transition is to: A. conclude a thought. B. indicate doubt. C. add emphasis. D. link ideas. D
asked by Angela 
English
Choose the version of the sentence below that has correctly placed modifiers. A. Coughing and sputtering, Alan steered the old car to the side of the road. B. The old car was coughing and sputtering as Alan steered it to the side of the road. C. The car
asked by Angela 
English
Carla and __________ don't think it is a good idea for __________ girls to go to Tom's Halloween party tomorrow night. A. them; us B. they; we C. them; we D. they; us c
asked by Angela 
Algebra help please!
Suppose you are researching the eating habits of people your age. What sampling method could you use to find the percent of students in your grade who eat five servings of fruit and vegetables each day? What is an example of a survey question that does not
asked by Heather 
English
Choose the correct sentence. A. Whom do you think you are? B. Give the ledger to Mr. Bon or me. C. Either me or you should win first place. D. The secret is between Joe and I. B
asked by Angela 
Chemistry
For the balanced redox reaction 2 Al(s) + 3 Br2(g) → Al2Br6(s), determine the number of electrons transferred in the overall reaction.
asked by Sarah 
Chemistry
Under acidic conditions, MnO4− becomes Mn2+. Write the balanced halfreaction for this transformation. (Omit statesofmatter from your answer.)
asked by Tsion 
English III
1)"On the occasion corresponding to this four years ago all thoughts were anxiously directed to an impending civil war. All dreaded it, all sought to avert it. While the inaugural address was being delivered from this place, devoted altogether to saving
asked by AMK 
Algebra
What is the sum (1 / 2b) + (b / 2)
asked by Sandra 
Chemistry
The problem is: Calculate the standard freeenergy change for the following reaction at 25 degrees Celsius. 2Au^+3(aq) + 3Cr(s)> 2Au(s) + 3Cr^+2(aq) I worked it out, getting half reaction: Au^3+ + 3e > Au; E = 1.498 Cr^3+ + 3e > Cr; E = 0.74 Ecell =
asked by Tiffany 
Math
how many different shapes can you make with the 4 triangles cut from this rectangle? how do you know?
asked by banana 
English
Two sentences joined together with a coordinating conjunction and a comma form a: A. compound sentence. B. complex sentence. C. comma splice. D. runon. B
asked by Angela 
Physics
A cargo plane is flying horizontally at an altitude of 10000m with a velocity of 800km/h when a cargo pallet falls out the back ramp. (i) How long does it take to fall to the ground? (ii) How far horizontally is the pallet from where it fell off when it
asked by Olumide Adesiyan 
Chemistry
212 84Po→208 82Pb+AZX What would the value of A be here? 212 84Po→208 82Pb+AZX what would the value of z be here?
asked by Jones 
English
The editor is in charge of proofreading all of the __________ for the newspaper. A. head lines B. headlines C. headlines' D. headlines D
asked by Angela 
Physics
A "reference ring" with moment of inertia Ic rests on a solid disk torsion pendulum with a moment of inertia I0. a) What is the period T0 for the motion with the disk alone? b) What is the period T1 for motion with the combined system? c) Use the
asked by Tim 
Physics
Help me please I'm stuck on this question 2.In a thunderstorm at 20.0°C, Karen sees a bolt of lightning and hears the thunderclap 3.00 s later. How far from Karen did the lightning strike? Show your work.
asked by Me and I 
physics
A hammer with 10 J of kinetic energy hits a nail and pushes it 5.0 mm into a plank. Both the hammer and nail come to rest after the collision. What is the average force that acts on the nail while it moves the 5.0 mm?
asked by Anonymous 
Geometry
In a garden, a birdbath 2ft 6 in. tall casts an 18in. shadow at the same time an oak tree casts a 90ft shadow. How tall is the oak tree?
asked by Jess 
English
Which of the following is a complex sentence? A. She was invited to the party, but she had already made other plans. B. He wasn’t hungry because he had a late lunch. C. The dog followed her around the apartment all day long. D. Initially, the conference
asked by Angela 
English
The topic sentence of a body paragraph: A. introduces the thesis statement. B. outlines one thesis point. C. is developed during the proofreading step. D. summarizes the essay’s main points. D
asked by Angela 
Chemistry
Balance the following redox (oxidationreduction) reaction under basic conditions. (Include statesofmatter under the given conditions in your answer. Use the lowest possible whole number coefficients.) CrO42−(aq) + S2O32−(aq) → Cr3+(aq) +
asked by Cam 
math
The account balance on April 1st is $50.51. On April 15th a payment of $15.00 is made. On April 25th a purchase of $19.27 is made. The annual rate is 18%. What is the finance charge using the previous balance method? What is the new balance?
asked by Anonymous 
math
What is the average monthly income for these weekly incomes: $299.34, $203.49, $305.39, and $225.30? This is all the question gives me. Please help.
asked by ale 
English
Jessica's high grades in her geometry class made her mother and __________ very proud. A. myself B. I C. me D. ourselves C
asked by Angela 
Chemistry
Based on the cell reaction: Zn(s)+Cu2+(aq)→Zn2+(aq)+Cu(s) Under standard conditions, what is the maximum electrical work, in joules, that the cell can accomplish if 55.0g of copper is plated out? Wmax=______ J
asked by Rebecca 
math
6. Which is the best measure of central tendency for the type of data below–the mean, the median, or the mode? Explain. Hours of sleep each night Median; there will be outliers Range; there are no outliers Mode; the data are nonnumeric Mean; the
asked by TTR+S<3 
English
A body paragraph in an essay is one that: A. expounds upon the thesis of the essay. B. brings closure to the piece. C. features footnoted information. D. introduces the ideas that will be covered in the essay. A
asked by Angela 
Chemistry
What mass of lithium phosphate is needed to prepare 500.0 mL of a solution having a lithium ion concentration of 0.1385 M?
asked by Chris 
Math
Brian's boat has a top speed of 9 miles per hour in still water. While traveling on a river at top speed, he went 10 miles upstream in the same amount of time he went 20 miles downstream. Find the rate of the river current.
asked by Andrea 
MATH HELP
which of the following is likely to have a mass of 2 kilograms 1.a grown elephant 2. a pineapple 3. a 3 year old child 4. or an acorn
asked by A.J 
statistics
Suppose a random sample of size 50 is selected from a population with σ = 10. Find the value of the standard error of the mean in each of the following cases (use the finite population correction factor if appropriate). a. The population size is infinite
asked by Vanessa 
Math
1. An assessment rate is 47%. The property tax is $39.94 per $1,000. What is the effective tax rate? Round to the nearest tenth of percent. 2. A property tax rate is $7.79 per $100 of assessed value. what is the tax rate as a decimal? Please help.
asked by Mer 
Chemistry
Write a nuclear equation for the indicated decay of each of the following nuclides. Th−234 (beta)......no clue O−15 (positron emission): 16/8 O>16/7N + B+ (said was wrong) Ar37: 37/18Ar + e > 37/17Cl + v (said was wrong) what would be the proper
asked by Jones 
Chemistry
Balance the following equation in basic solution. Phases are optional. I{}+IO4{} > I3{}+IO3{}
asked by ACDub 
Math
A car moves along a straight road in such a way that its velocity (in feet per second) at any time t (in seconds) is given by v(t) = 3t sqrt(64−t^2) (0 ≤ t ≤ 8). Find the distance traveled by the car in the 8 sec from t = 0 to t = 8.
asked by Vanessa 
English
A dependent clause and an independent clause joined together form a: A. compound sentence. B. simple sentence. C. compoundcomplex sentence. D. complex sentence. D
asked by Angela 
math
Chris Shopper received a $800 discount loan to purchase a washer and dryer. The loan was offered at 10% for 120 days. What are the proceeds?
asked by Anonymous 
Physics
An object is 14 cm in front of a diverging lens that has a focal length of 7.9 cm. How far in front of the lens should the object be placed so that the size of its image is reduced by a factor of 1.9?
asked by Neil 
English
A sentence that consists of two or more main clauses and no subordinate clause is a: A. compound sentence. B. compoundcomplex sentence. C. complex sentence. D. simple sentence A
asked by Angela 
chemistry
Assume that no heat is lost to the surroundings and calculate the enthalpy involved when 200. mL of .10 M potassium hydroxide and 200. mL of .10 M hydrochloric acid are mixed. Both solutions began at room temperature, 24.5 degrees celsius, and have
asked by Devon 
College Cal 1
A farmer wants to fence off a rectangular field of area 15000 square feet using barbed wire fencing. SInce the opposite of the road is a cornfield, he wants a twostrand fence along the road, and one strand on each of the other three sides. What are the
asked by DJ 
astronomy
Rank the following hypothetical planets  all of which have the same total mass and same radius  from lowest moment of inertia to highest moment of inertia: 1) A uniform sphere of mixed up rock and iron 2) A rocky planet with an iron core 3) A rocky
asked by keitanako 
Planets I Love Space!
why the outer planets did not lose the lighter gases in their atmospheres.?
asked by Chloé 
M a t h
A small plant manufactures riding lawn mowers. The plant has fixed cost (leases, insurance, etc.) of $48,000 per day and variable cost (labor, materials, etc.) of $1,400 per unit produced. The mowers are sold for $1,800 each. So the cost and revenue
asked by Anonymous 
calculus
A box is contructed out of two different types of metal. The metal for the top and bottom, which are both square, costs $5 per square foot and the metal for the sides costs $2 per square foot. Find the dimensions that minimize cost if the box has a volume
asked by Griffin Bilskie 
Public Speaking
Evaluating audience feedback to your speech presentation usually happens: A. before the speech. B. after the speech. C. during the speech. D. in the speech preparation
asked by Holly 
c
The topic sentence of a body paragraph: A. introduces the thesis statement. B. outlines one thesis point. C. is developed during the proofreading step. D. summarizes the essay’s main points. C
asked by Angela 
Math
A company is planning to expand its business in a few years. New plant construction costs are estimated to be $4.75 per square foot. The company invests $850,000 today at 6% compounded quarterly. a. How many square feet could be built in 3 1/2 years? b. If
asked by Marsha 
Precalculus
1. Consider the curve y=x^2. a. write down (dy)/(dx) My answer: 2x The point P(3,9) lies on the curve y=x^2. b. Find the gradient of the tangent to the curve at P. My answer: 2*3=6 c. Find the equation of the normal to the curve at P. Give your answer in
asked by Anonymous 
Science
a bomb of 5 kg explodes into two equal fragments. At what angle, these fragments fly apart?
asked by Fate tree 
trig
A car is on a driveway that is inclined 12 degrees to the horizontal. A force of 470lb is required to keep the car from rolling down the driveway. a) Find the weight of the car b) Find the force the car exerts against the driveway
asked by Lisa 
accounting
Wendell Corporation exchanged an old truck and $25,500 cash for a new truck. The old truck had a book value of $6,000 (original cost of $25,000 less $19,000 in accumulated depreciation) and a fair value of $7,700. Required: 1. Prepare the journal entry to
asked by angela 
trigonometry
An angle measuring (468n)° is in standard position. For which value of n will the terminal side fall along the negative portion of the xaxis
asked by Anonymous 
Algebra
What is the sum (1 / g+2) + (3 / g + 1)
asked by Sandra 
statistics
The College Board reported the following mean scores for the three parts of the Scholastic Aptitude Test (SAT) (The World Almanac, 2009): Assume that the population standard deviation on each part of the test is = 100. a. What is the probability a sample
asked by Vanessa 
Chemistry
A 4.379 g sample of MgCl2 is dissolved in enough water to give 750.0 mL of solution. What is the chloride ion concentration in this solution?
asked by Chris 
science
An HR diagram? Answer Are Is a map of the position of the stars Graphs stars according to their size and distance List every known star Graphs a sample of stars according to surface temperature and absolute brightness Thank You
asked by snow 
Physics
Last question i'm stuck on please help me through this. Five waves pass a dock in 2.0 s. If the waves are traveling at 10.0 m/s, then what is the wavelength of the waves?
asked by Me and I 
statistics
Assume that the population proportion is .55. Compute the standard error of the proportion, ( ), for sample sizes of 100, 200, 500, and 1000 (to 4 decimals). a. 100? b. 200? c. 500? d. 1000?
asked by Vanessa 
physics
The drawing shows the top view of two doors. The doors are uniform and identical. Door A rotates about an axis through its left edge, and door B rotates about an axis through its center. The same force is applied perpendicular to each door at its right
asked by Anonymous 
statistics
Professor Smith gave a final exam in her history class. The scores on the final exam are normally distributed with a mean of 75 and a standard deviation of 6. If Professor Smith wishes to give A’s to the top 4%, what would be the cutoff score be for
asked by Sally 
math
Jerry is 50 inches tall growing at a rate of 1/24 inches per month. Adam is 47 inches tall growing at a rate of 1/8 per month. If they continue to grow at these rates for the next 4 years in how many months will they be the same height? Solve two different
asked by Robin 
science
Which of the following determine how long a star remains on the main sequence Answer Are MASS TEMPERATURE BRIGHTNESS ALL ABOVE THANK YOU
asked by snow 
Algebra
What is the difference (5x2)/4x –(x2)/4x
asked by Sandra 
Algebra
The area of a parallelogram is 115 square miles the base is= x+9 and the height is x9. so the equation I got down which is 115=(x+9)*(x9. Now I have to find the base and height in miles. Can someone help?
asked by Christopher 
math
Houston Community College is planning to construct a rectangular parking lot on land bordered on one side by a highway. The plan is to use 640 ft of fencing to fence off the other three sides. What should the dimensions of the lot be if the enclosed area
asked by Ashley 
statistics
People end up tossing 12% of what they buy at the grocery store (Reader's Digest, March 2009). Assume this is the true population proportion and that you plan to take a sample survey of 540 grocery shoppers to further investigate their behavior. a. Show
asked by Vanessa 
Algebra
What is the difference? (r+2 / r+4) – (3 / r + 1)
asked by Sandra 
physics
1. A car travels down a straight, flat, level road. Initially, the car is traveling at 80.0 km/hr Northward . After traveling 0.50 0 km , the car is traveling at 95 .0 km/hr. What is the magn i tude of the car ’ s acceleration during this interval ?
asked by khaled 
Algebra help PLEASE?
Create two different situations: one in which you use combinations and one in which you use permutations. Include specific details and an explanation about what makes each situation either a combination or permutation.
asked by Aniston 
Math
(2n + 2)(6n + 1) Find the product.
asked by Sadie 
physics
Four identical masses of mass 800kg each are placed at the corners of a square whose side lengths are 15.0cm . What is the magnitude of the net gravitational force on one of the masses, due to the other three?
asked by name 
Physics
A magnifying glass (a positive lens) with a focal length of +6 cm is placed 2 cm above a page of print. What is the magnification of this image?
asked by Anonymous 
financial management
A capital project has an initial investment of $100,000 and cash flows in years 16 of $25,000, $10,000, $50,000, $10,000, $10,000, and $60,000, respectively. Given a 15 percent cost of capital, •(a) compute the net present value. . •(b) compute the
asked by lori 
PHYSICS
A dog sitting 2.2m from a vertical mirror thinks its image is another dog. A)How far is the image from the dog? B)To investigate, the dog walks directly toward the mirror at 0.28m/s . At what rate does the dog approach its image?
asked by Amy 
meiosis
Explain how crossing over and independent alignment of chromosomes increase genetic variability?
asked by Esteban 
physics
The velocity of a simple harmonic oscillator is given by; v = + 6.92*sin(10.5*t) (mks units) What is its angular frequency? omega = What is the amplitude of the motion? A = Where is the mass at the time t = 86.08 seconds? x = If the mass is 0.53 kg, what
asked by joe 
Math
Richard Simmons is selling his house. He has a choice of taking $125,000 today or $135,000 in 6 months. If he takes the money today, he can invest it at Valley Bank at 5% interest compounded monthly. a. How much would be in the account after six months if
asked by Mani 
AP Biology
Why are Eukaryotes more difficult to Transform than Prokaryotes? What methods can be used to transform Eukaryotes?
asked by Luis 
math trigonometry
At night, a security camera pans over a parking lot. The camera is on a post at point a which is 53m from point c and 71 m from point b.the distance from B to c is 68m. Calculate the angle through which the camera pans
asked by Gary 
Trigonometric Function
A Ferris wheel has a radius of 10 meters and is revolving 6 times each minute (wheel's frequency.) The wheel's center is 12 meters from the ground. If time starts on the ground, then find a sine function that shows the height from the ground for a car on
asked by Valerie 
math trigonometry
At night, a security camera pans over a parking lot. The camera is on a post at point a which is 53m from point c and 71 m from point b.the distance from B to c is 68m. Calculate the angle through which the camera pans
asked by Gary 
Physics
The graph below shows the force applied to a 4.0 kg cart initially at rest but free to move on a horizontal track. Forces (in N) are measured on the ordinate and times (in s) are measured on the abscissa. Use the following values for the graph: a = 4.9 and
asked by JAYZ 
Thermodynamics
A 10m height cylinder with cross sectional area of 0.1 m2 has a massless piston at the bottom as shown in Figure Q2. Water is at the top of the piston with air at 20oC over it. Under the piston there is air at 300K. The volume of the air is 0.3m3. Heat is
asked by Hao 
statistics
Many drugs used to treat cancer are expensive. BusinessWeek reported on the cost per treatment of Herceptin, a drug used to treat breast cancer (BusinessWeek, January 30, 2006). Typical treatment costs (in dollars) for Herceptin are provided by a simple
asked by Vanessa 
Math
Find the average value of the function f over the interval [1, 2]. f(x) = 1  x^2
asked by Vanessa 
math
Water flows through a pipe with the inner diameter of 20cm at a speed of 1m/s. How long does it take for the water flowing out from the pipe to fill a cylindrical tank with the base radius of 0.8m and the height of 0.5m?
asked by Tom 
chemistry
I have to write a balanced equation for the reaction of a solid lead being added to a solution of silver nitrate. Solid silver forms and the lead disappears as it goes into the solution as lead (ii) nitrate. I think it should be Pb + AgNO3 >>>> Ag +
asked by jazz 
Business Math
Compute the simple interest. Assume 1 month to be of a year. Round your answer to the nearest cent. Principal Rate Time Interest $1,025 4.5% 16 months
asked by Rita 
Math
If Logan's family can drive 23.125 miles on 1 gallon of gas, how far can they drive on 17 gallons?
asked by Ruby 
Thermodynamics
A 10m height cylinder with cross sectional area of 0.1 m2 has a massless piston at the bottom as shown in Figure Q2. Water is at the top of the piston with air at 20oC over it. Under the piston there is air at 300K. The volume of the air is 0.3m3. Heat is
asked by Hao 
math
Suppose Maya made another sign with an area of 48 square inches. would this sign be larger or smaller than the sign with an area of 48 square centimeters? Explain how you know.
asked by mimi 
Chemistry
A solution of I2 was standardized with ascorbic acid. Using a 0.0500 g sample of the acid, 26.50 mL of I2 were required to reach the starch end point.
asked by Alexis 
chemistry
I am unsure about balancing equation I would like for someone to let me know if I am working this out correctly? I have to write a balanced equation for the reaction when solid magnesium is added to a solution of lead(ii)nitrate, solid lead forms and the
asked by jazz 
algebra1
Marissa earns $3.75per hour at a local fast food restaurant. write an expression for the amount of money she earns and determine how how much she is going to earn in 7 hours. A.3.75x;$26.25 B.7x;$26.25 C.3.75x+7x;$10.75 D.7x;$3.75
asked by angela 
CHEMISTRY HELP !!!! Show work please!
Compute the energy released in kilojoules when the sun converts 1.00 metric ton into energy. NOTE: 1 metric ton = 1000 kg.
asked by Patrick 
chemistry
A sample of hydrogen chloride gas occupies 0.550L at STP. What is the pressure in atm if the volume is 7.50×10−2L at 20∘C?
asked by ally 
HELP!
Next year (sophomore year) I'm taking the following courses: Honors Algebra II/Trig Spanish III Health AP Biology Honors English AP World History Is AP Bio and world history hard? or no it's not just the exam. Please tell me because this is my first year
asked by Erika 
chemistry help~~~~ Please!!!
Sodium24, t1/2 = 15.0 hr, can be used to study the sodium balance in animals. If a saline solution containing 25 μg of 24^Na is injected into an animal, how long can the study continue before only 1 μg is left? Show work please!
asked by Kim 
statistics
Leslie took two midterm exams and earned the following scores: 82 on the chemistry exam (class distribution: μ = 75, σ = 6.25) and 63 on the physics exam (class distribution: μ = 59, σ = 3.57). Rounding to two decimal points, on which exam should
asked by Sally 
statistics
It is known that the population mean for the Full Scale IQ of the WAIS is 100 with a standard deviation of 15. A researcher assesses a sample of 200 adults and find that they have a mean Full Scale IQ of 102. The point estimate of the mean for this group
asked by Sally 
physics
Two wires are anchored at both ends. Wire 1 has a mass of 105 grams and a length of 6.9 m. Wire 2 has a mass of 60 grams, a length of 20 m, and a tension of 143 N. What must be the tension in Wire 1 if its third harmonic is to equal the first overtone of
asked by johnny 
chemistry
Adding a complex ion forming species to a solution will increase the solubility of a slightly soluble species. Calculate the Molar solubility (s) of AgI in a 1.75 M ammonia solution. The Ksp for AgI is 8.3 x 1017 and the Kf for Ag(NH3)2+ is 1.5 x 107. I
asked by bekah 
chemistry
I have to write a balanced equation for the decompostion of solid copper (ii) sulfate to form the gaseous sulfur trioxide and solid coper (ii) oxide. I would appreciate it if you could tell me if I have written it correctly. CuSO4 >>> SO3 + CuO If I did
asked by jazz 
Chemistry
Titration of 50.0 ml of acetic acid reaches equivalence after delivery of 22.5 ml of standardized NaOH 0.21 M. What is the initial concentration of acetic acid and what is the pH of the solution? What is the pH at equivalence? What is the pH after addition
asked by Sam 
Chemistryneed help ASAP
15 ml of 3.0 M NaOH are added to the following: 500.0 ml of pure water 500.0 ml of 0.1 M formic acid 500.0 ml of 0.1 M formate of potassium 500.0 ml of a solution containing 0.1 M formic acid and 0.1 M formate of potassium. Calculate the difference of pH
asked by Sam 
statistics
Ashley and Sanjay are donating blood at a local hospital. As a standard practice, the blood is screened for anemia (low levels of red blood cells), and the results are given to each donor as a z score, ranging from negative scores (low amounts of red blood
asked by Sally 
Math
Jason Printing has $85,000 to invest. They can invest in Wilder Revenue at 10% compounded semiannually or at Cheapskate Investments at 9.8% compounded monthly. a. Calculate the two APYs and compare them to determine your answer. Make sure to distinguish
asked by Maddy 
English
He was taking a shower when I called.  Q: Did I make a phone call or call his name shouting in the sentence?
asked by rfvv 
Written Communication
• Choose a topic from your personal knowledge and experience. Remember that you must utilize your firsthand experience to prove your authority to write on a topic. Purely generalized and/or factual information is not acceptable. • Write in your own
asked by Nique 
Language Arts
1. A factory might EMIT A. Pollution B. Smokestacks C. Resources 2. How do the members of Don't Be Crude make a persuasive appeal? A. By embarrassing people B. By educating people C. By encouraging people D. by making people laugh 3. What did Gina Gallant
asked by Hannah 
chem090
100.0 g of Potassium Phosphate reacts with 100.0 g of Barium Chloride. Which molecule is completely used up by the reaction? How many grams of the other molecule are left over? When I started with 100.0 g of K3PO4 I got 147.1g of BaCl2. When I started with
asked by Jenny 
math
A jar of coins has only nickels and quarters, which are worth a total of $3.25. There are 5 fewer quarters than nickels. How many quarters and nickels are in the jar?
asked by Katie 
chemistry 2
Titration of 50.0 mL of acetic acid reaches equivalence after delivery of 22.5mL of standardized NaOH 0.21 M. What is the initial concentration of acetic acid and what is the pH of the solution? What is the pH at equivalence? What is the pH adition of 20.0
asked by philip 
Chemistry
What mass of hydrogen gas is produced when a 7.43 g chunk of zinc dissolves in 500.0 mL of 1.200M HCl?
asked by Chris 
Math
Nikko knows that 20 percent of a number 56. To find the number, she uses the equation 56= 2over5x.Is Nikko correct. Explain.
asked by Victoria 
trying to understand math
Your store’s average basket (transaction) size for the month of March was $11.50 and you believe the average basket size will remain the same for your store in April. One of your hourly employees had an average basket size of $9.00 for the month of March
asked by math 
English
1. He is honest in himself. (Is this sentence grammatical? What is the meaning of 'in himself' then?) 2. He must be angry because she's not saying anything. 3. He has to be angry because she's not saying anything. (Are both the same and grammatical?) 4. He
asked by rfvv 
Physics
An airplane is flying at an altitude of 2,000 m with a speed of 216 m/s. What is the pressure of air outside the plane?
asked by Sandra 
Chemistry
In the SN2 mechanism, considering that the nucleophile attacks at the same time as the leaving group leaves, what would the effect of having a hindered (crowded) reaction center be on the rate of the reaction? Would you expect it to react slower or faster
asked by Laura 
chemistry
A ground water source contains 2.5 mg of F ion per liter. a) what is the concentration of F ions in moles per liter? b) will CaF2 (Ksp = 2E10) precipitate when the concentration of Ca2+ = 5.0E3M?
asked by parker 
PHYSICS
A laser is mounted on a table 1.04m above the ground, pointed at a vertical mirror a horizontal distance 3.46m away. The laser beam strikes the mirror 1.52m above the ground. Behind the laser is a wall, 2.80m from the aperture where the laser light
asked by Amy 
Algebra
To those who know how to use a ti84 plus calculator. Can anyone show me the steps on how to perform rational expressions and equations?
asked by Christopher 
statistics
What is wrong with the statement: It is believed that the proportion of Middle School teachers who leave the profession within 5 years is different from the proportion of High School teachers who leave the profession within 5 years. Test with a level of
asked by Terri 
Physics
A cue ball collides with two other snooker balls and comes to a complete stop. The angles between the centres at the point of collision are shown below. If the velocity of the incoming cue ball is 5 m/s, determine the velocities of all moving balls after
asked by Olumide Adesiyan 
english 11
Question about Nora's children in the book the A Doll's house.? 1. What have you Learned from My Mother? Write three short paragraphs, one from the point of view of each of Nora's children, describing. what the children feel they've learned from their
asked by yasminb. 
Finance
A company is planning to open 100 new outlets that are expected to generate, in total, $15 million in free cash flows per year, with a growth rate of 3% in perpetuity. If the company’s WACC is 10%, what is the NPV of this expansion?
asked by Nabil 
physics
the binding energy of a nucleus is 240.0 MeV. What is the mass defect of the nucleus in atomic mass units?
asked by fifi 
physics
A 15.4g bullet traveling at 270 m/s is fired into a 0.488kg wooden block anchored to a 100 N/m spring. How far is the spring compressed? x_{compressed} = If the speed of the bullet is not known but it is observed that the spring is compressed 43.9 cm, what
asked by george 
Radioactivity
The mass number of an atom undergoing beta decay doesn't change. However the daughter nucleus is a different element than the parent. Explain how this is possible
asked by Anonymous 
Math help asap
E^x/2.9099=ln 7.8x10^10
asked by Nicola 
Physics
A radar sends out a sound wave of 1.50 Mhz and senses it again from a moving car at a 1.40 Mhz. What is the speed of the car ?
asked by Physics: Doppler Effect ? 
CALC 2 pls help!!
In the following series x is a real number. In each case, use the ratio test to determine the radius of convergence of the series. Analyze the behavior at the endpoints in order to determine the interval of convergence. a. Summation n=0 to infinity
asked by BAE 
math
If z =1+2j and z =1+j 1 2 find z 3z 1 2
asked by Geoff 
Social Studies
I am the Star Reporter who is going to visit George Washington at his home at Mount Vernon during the years of 17591774. I am interviewing him about his political and personal views, activities, goals, and predictions. Develop 10 questions to ask
asked by Anonymous 
health
factors that help maintain a healthy weight
asked by Linsay 
Calculus 2
In the following series x is a real number. In each case, use the ratio test to determine the radius of convergence of the series. Analyze the behavior at the endpoints in order to determine the interval of convergence. a. Summation n=0 to infinity
asked by BAE 
English
What is the general purpose of a book review?
asked by Victoria 
Math
Find the average value of the function f over the interval [0, 8]. f(x) = 5e^x
asked by Vanessa 
Math
An organization is planning a dance. The band will cost $400 and advertising costs will be $100. Food will be supplied at $2 per person and tickets cost $6 per person. How many people will have to attend the dance if the organization want to profit $400?
asked by Shelly 
Chemistry  Science (Dr. Bob222)
Consider reaction below: 50H3O^+(aq) + 7Cr2O7^2(aq) +3I_2(aq) > 6IO_4^(aq) + 14Cr^3+(aq) + 75H2O (l) How many electrons are transferred in this reaction?
asked by Adrik 
math
A study of 60 bolts of carpet showed that their average length was 180 yards. The standard deviation of the population is 6 yards. Which of the following is the 99% confidence interval for the mean length per bolt of carpet?
asked by hassan 
algebra 1
the width of a rectangle is 3 less than twice the length x. if the area of the rectangle is 43 square feet, which equation can b e used to find the length in feet. f. 2x(x3)=43 g. x(32x)=43 h.2x+2(2x3)=43 g. x(2x3)=43 is it f. 2. sasha and lakeisha
asked by angela 
Algebra
how to solve algebra equation √(5x^2 )+7x+2√(4x^2+7x+18) =x4
asked by Tuaha 
Chemistry
Based on the mechanisms that you have determined and the information in the introduction, what is the product of 1cholorobutane after reaction under the sodium iodide conditions? The ethanolic silver nitrate conditions?
asked by Katie 
albebra
solve arithmetically and algebraically. The perimeter of a rectangle is 54 cm. Its length is 6 cm. What is its width?
asked by Robin 
Math
Find the average value of the function f over the indicated interval [0, 8]. f(x) = 7/(x + 1) I keep getting the wrong answer.
asked by Vanessa 
Chemistry, CO2 aq+H2O>H2CO3!
How many grams of CO2 are needed to neutralize a 5 liters water with a pH of 11 to 7? under the following conditions: P: 4000 psi, T:230 oF Note: CO2 is a one of oil reservoir fluid components with mole percent 0f 3.6%. thanks a million
asked by Ramtin 
Calculus II
Compute the first 5 terms of the sequence: {b(n)}n=1¨‡ = nã6n + (5/6)^n. ((that is:(Bsub(n))from n=1 to infinity = nth root of 6n + (5/6)raised to n.)) If the sequence converges, find the limit.
asked by chelsea 
caculus
By using a product rule for the differentiation, prove that ∫u dv=uv ∫v du
asked by the minahs 
Calc 2
Consider the sequence: (a,sub(n))={1/n E(k=1 to n) 1/1+(k/n)} Show that the limit(as n> infinity) A(sub(n))= ln 2 by interpreting a(sub(n)) as a Reimann Sum of a Definite Integral.
asked by chelsea 
math
tameka draws a line that would cut a square in half. she says makes 2 smaller squares. is tameka correct? explain
asked by Anonymous 
social studies
How do the words dialect and heritage help understand European culture?
asked by Anonymous 
math
If z˅1=1+2j and z˅2=1+j find (i) z˅13z˅2 (ii) z˅1z˅2 ___ (iii) z˅1z˅1 (iv) z˅1/z˅2
asked by Geoff 
AP Biology
What is the purpose of using a plasmid containing an antibiotic resistance gene in the transformation process?
asked by Luis 
Alg.
Given g(x) = x^2 – 3, find the following. g(−4 + h) − g(−4)/ h (all over h)
asked by Kell 
alg
If f is a 11 function and f(0) = 4, f(1) = 5, f(2) = 7, and f(3) = 9, find the following. f ^−1(5)
asked by Kell 
math
The sales goal for your store this week is $22,682. The sales goal for your store this week last year was $20,128. Your store has averaged 1775 transactions per week for the last four weeks. Assuming the number of transactions is consistent, what is the
asked by help please 
Language Arts
Which of the following places events in chronological order? A.formation of Negro Leagues, invention of baseball, Civil War B.invention of baseball, Civil War, formation of Negro Leagues C.invention of baseball, formation of Negro Leagues, Civil War
asked by A.J 
Health
What are four nutritional an physical exercise goals?
asked by Linsay 
Chemistry, CO2 aq+H2O>H2CO3!
How many grams of CO2 are needed to neutralize a 5 liters water with a pH of 11 to 7? under the following conditions: P: 4000 psi, T:230 oF Note: CO2 is a one of oil reservoir fluid components with mole percent 0f 3.6%. thanks a million
asked by Ramtin 
Physics
Gravity on Mars is 1/3 of that on earth. If Mars atmosphere is only 2 km thick, what is atmospheric pressure on Mars?
asked by Sandra 
Chemistry, CO2 aq+H2O>H2CO3!
How many grams of CO2 are needed to neutralize a 5 liters water with a pH of 11 to 7? under the following conditions: P: 4000 psi, T:230 oF Note: CO2 is a one of oil reservoir fluid components with mole percent 0f 3.6%. thanks a million
asked by Ramtin 
Math
Find the average value of the function f over the indicated interval [0, 8]. f(x) = 7/(x + 1) I keep getting the wrong answer.
asked by Vanessa 
Math
Find the average value of the function f over the interval [1, 2]. f(x) = 1x^2
asked by Vanessa 
Math
(6x4 – 3x + 5) – (3x4 + 4x3 – 6x2 + 1)
asked by Anonymous 
math
Your store’s average basket (transaction) size for the month of March was $11.50 and you believe the average basket size will remain the same for your store in April. One of your hourly employees had an average basket size of $9.00 for the month of March
asked by math 
Math
Find the average value of the function f over the interval [1, 2]. f(x) = 1x^2
asked by Vanessa 
math
Whats 4,580+250
asked by aaliyah 
cal
future value compounded continuously is B(t)=P(1+r/k)^kt and the present value compounded continuosly is P(T)=B(1+r/k)^rt True or false and why
asked by rystal 
calculus
false
asked by Anonymous 
English
Internal motivation is
asked by Jenny 
Chemistry, CO2 aq+H2O>H2CO3!
How many grams of CO2 are needed to neutralize a 5 liters water with a pH of 11 to 7? under the following conditions: P: 4000 psi, T:230 oF Note: CO2 is a one of oil reservoir fluid components with mole percent 0f 3.6%. thanks a million
asked by Ramtin 
Science radioactivity
why are alpha and beta radiation referred to as particles while gamma radiation is referred to as rays?
asked by Anonymous 
Chemistry, CO2 aq+H2O>H2CO3!
How many grams of CO2 are needed to neutralize a 5 liters water with a pH of 11 to 7? under the following conditions: P: 4000 psi, T:230 oF Note: CO2 is a one of oil reservoir fluid components with mole percent 0f 3.6%. thanks a million
asked by Ramtin 
math, science
a vertical shaft 150mm in diameter rotating 100r.p.m resrs on a flat end foot step bearing.the shaft carries a vertical load of 20kN assuming uniform pressure distribution and coefficient equal to 0.05, estimate power lost in friction
asked by anuska 
English
In each stanza of Dioondra's peom "If", she seems to wonder whether. The mountains can reach into the clouds People will laugh at her work or appreciate it She can find a job painting windowsills She could survive a storm in a raging
asked by shawn miles 
marketing
can someone please specify a purchase order i am having troubles
asked by josh 
Math
Find the average value of the function f over the indicated interval [0, 8]. f(x) = 7/(x + 1)
asked by Vanessa 
HELP!
Need some help with the 6:3:1 ratio question. Don't understand.
asked by ashley 
math
What is 8% of 15?
asked by Caroline