Questions Asked on
March 9, 2010

Algebra 1
What is the Advantage of Buying a Magnetic Bullein Board
asked by Zachary 
AP Chemistry
In a saturated solution of Zn(OH)2 at 25 degrees Celsius the value of [OH] is 2.0x10^6M. What is the value of the solubilityproduct constant, Ksp, for Zn(OH)2 at 25 degrees Celsius? A. 4x10^18 B. 8x10^18 C. 1.6x10^17 D. 4x10^12 E. 2x10^6 Help?
asked by Anonymous 
math
who makes rainwater mix with dirt?
asked by aleah 
Calculus  another question
"The side of an equilateral triangle decreases at the rate of 2 cm/s. At what rate is the area decreasing when the area is 100 cm^2?" Help!
asked by Stuck 
Chemistry
The equilibrium constant for the reaction 2NO(g) + O2(g) 2NO2(g) is Kp=1.48x10^4 at 184C. Calculate Kp for 2NO2(g) 2NO(g) + O2(g). I know the equation is Kp=Kc(RT)x Delta n Kp is what we're solving for Kc= I can't seem to find. R=.0821 T=184+273 Delta n= 1
asked by Anonymous 
chemistry
The molarity of urea in a solution prepared by dissolving 16 g of urea (MW 60.0g/mol) in 39 g of H2O is ______M. The density of the solution is 1.3 g/ml.
asked by CC 
Chemistryhelp!
Given the equilibrium: HCN(aq) + H2O(l) ←→ H3O+(aq) + CN(aq) ΔH >0; Ka = 4.0 x1010 What happens to the concentration of hydrogen cyanide [HCN] when the following stresses are placed on the system at equilibrium? NaCl is added > Stays the Same but
asked by Val 
Chemistry
CO(h20)6 2+ + 4Cl CoCl4 2 + 6H20 What would AgNO3 do when added to this? What is the equilibrium expression?
asked by Kharris 
Statistics
A student group claims that firstyear students at a university must study 2.5 hours (150 minutes) per night during the school week. A skeptic suspects that they study less than that on the average. A class survey finds that the average study time claimed
asked by Kate 
Physics
The instant before a batter hits a .14 KG baseball, the velocity of the ball is 45 meters per second west. The instant after the batter hits the ball, the ball's velocity is 35 meters per second eat. The bat and ball are in contact for 1.0 x 10 ^2 second.
asked by Nicole 
Physics
A spring with a force constant of 4.5×104 N/m is initially at its equilibrium length. How much work must you do to stretch the spring 0.070 m? How much work must you do to compress it 0.070 m?
asked by Franky 
trig
prove: 1+cosx/1cosx1cosx/1+cosx=4cotxcscx
asked by Sarah Fuller 
Physics
A kayaker paddles with a power output of 50.0 W to maintain a steady speed of 1.30 m/s. Calculate the resistive force exerted by the water on the kayak. If the kayaker doubles her power output, and the resistive force due to the water remains the same, by
asked by Tim 
center of massplease help
The CM of an empty 1170 kg car is 2.50 m behind the front of the car. How far from the front of the car will the CM be when two people sit in the front seat 2.8 m from the front of the car, and three people sit in the back seat 3.90 m from the front?
asked by Anonymous 
chemistry 101
Assume you are performing the calibration step of Experiment 8 and you begin with 50 g of water at 20 oC and 50 g of water at 80 oC. After adding the two portions of water into your calorimeter setup and following the procedure outlined in the experiment,
asked by Sam 
Science
Homw many grams of copper sulfate pentahydrate (CuSo4 5H2O) would you heat to produce 29.8 g of water?
asked by Anne 
Calculus
A point moves along the curve y=(x2)^2 such that the x coordinate is increasing at 2 units per second. At the moment x=1, how fast is its y coordinate changing.
asked by Cassy 
Physics
A 70 kg bicyclist rides his 7.8 kg bicycle with a speed of 14 m/s. How much work must be done by the brakes to bring the bike and rider to a stop? How far does the bicycle travel if it takes 3.5 s to come to rest?
asked by Gracey 
chemistry
what mass of sodium acetate, NaCH3CO2, must be added to 1.0 L of 0.10 M acetic acid to give a solution with a pH of 4.50?
asked by kim 
Chemistry
A galvanic cell consists of La^3+/La halfcell and a standard hydrogen electrode. If the La^3+/La half cell functions as the anode and the cell potential is 2.52 V, what is the reduction potential for the La^3+/La half cell? the choices are 2.52V,0.84V,
asked by Anonymous 
3rd grade
use the grid. draw two different figures that each have a perimeter of 14. find each area. question 2. draw a figure with the given perimeter of 10 units and 22 units. question 3. explain why it would be important to know the area of a room that new
asked by Kainalu Mauga 
college chem
. Jack Daniels Tennessee whiskey is 40.00% ethanol by volume. However, % alcohol by mass is quite different from % by volume. The molality of ethanol in an aqueous solution that is 40.00 % ethanol by volume is 10.88 molal. A) Find the % ethanol by MASS,
asked by josh 
math
the area of a rectangle is 100 square inches.the perimeter of the rectangle is 40 inches.a second rectangle has the same area but a different perimeter. is the second rectangle a square?
asked by faye 
math
If you have five brownies and you want to share them equally with four people. What is the fraction each person receive?
asked by kisha 
Chem
A sample of gas of mass 2.929 g occupies a volume of 426 mL at 0degree Cel and 1.00 atm pressure. What is the molecular weight of the gas? Thanks!
asked by Peter 
Chemistry
CO(h20)6 2+ + 4Cl CoCl4 2 + 6H20 What would AgNO3 do when added to this? What is the equilibrium expression?
asked by Kharris 
Precalculus
A line segment has endpoints A=(1,3) and B=(13,19). a) Find the equation of the circle for which the segment AB is a diameter. Ans: (x  7)^2 + (y  11)^2 = 100 b) Accurate to the nearest tenth, the circumference of this circle is _______ ? I was able to
asked by jh 
Physics
Three equal charges q form an equilateral triangle of side a. Find the potential at the center of the triangle. Express answer in terms of the variables a, q and Coulomb constant k.
asked by Heather 
sciencee
1. What pressure would be needed to compress 25.1 mL of hydrogen at 1.01 atm to 25% of its original volume? 2. If the pressure on a 1.04L sample of gas is doubled at constant temperature, what will be the new volume of the gas? 3. A 1.04L sample of gas
asked by Teisha 
Chemistry
A 8.6 X10^3M Solution of H3PO4 has a Ph=2.30. what is Ka for H3PO4? Have no clue how to solve this problem
asked by Anonymous 
Math
Julio ordered towo pizzas for dinner Friday. Dad ate 3/4 of one pizza, Jenny ate 1/8 of a pizza, Danny ate 1/4 of a pizza, and Mom ate 1/2 of a pizza. What fraction of a pizza was left for a midnight snack?
asked by Nina 
Statistics
A die that is fair will have each face of the die come up onesixth of the time in the long run. The population for die throwing contains the results of throwing the die an infinite number of times. For this problem, the parameter of interest is p is the
asked by Kate 
trignometry
prove: sin(a+b)/cosacosb=tana+tanb
asked by Sarah Fuller 
Chemisty
In which cases are higherenergy photons released, with Li+ or Cu2+? How do you know?
asked by student 
physics
A 0.16g spider hangs from the middle of the first thread of its future web. The thread makes an angle 7.2* with the horizontal on both sides of the spider. (A) What is the tension in the thread? (B) If the angle made by the thread had been less than 7.2*,
asked by Jackson 
Science
A new organism is found that is multicellular, does not have a backbone and has six legs. Classfy this organism in two ways.
asked by Diane 
Physics
A 1900kg car starts from rest and drives around a flat 56mdiameter circular track. The forward force provided by the car's drive wheels is a constant 1000N. a. What is the magnitude of the car's acceleration at t=13s? b. What is the direction of the
asked by Kay 
Physics
Two point charges, 5.0 µC and 2.0 µC, are placed 5.0 cm apart on the x axis, such that the 2.0 µC charge is at x = 0 and the 5.0 µC charge is at x = 5.0 cm. At what point(s) along the x axis is the electric field zero? I'm not exactly sure how i
asked by Chris 
Physics
At an amusement park, a swimmer uses a water slide to enter the main pool. The swimmer slides without friction, and descends through a vertical height of 2.89 m. Find the swimmer's speed at the bottom of the slide if she starts with an initial speed of
asked by Greg 
physics
During a particular thunderstorm, the electric potential difference between a cloud and the ground is Vcloud  Vground = 4.3 108 V, with the cloud being at the higher potential. What is the change in an electron's electric potential energy when the
asked by Erin 
Physics
You raise a bucket of water from the bottom of a deep well. If your power output is 108 W, and the mass of the bucket and the water in it is 7.00 kg, with what speed can you raise the bucket? Ignore the weight of the rope.
asked by Alex 
Calculus
"A rectangle is inscribed in a semicircle of radius 2 cm. Find the largest area of such a rectangle". There is a diagram, but I think the question makes it clear enough what is going on. I'm having problems finding a relationship that I can work with.
asked by Stuck 
2nd grade
How do you find the perimeter of a letter? for ex. the letter U
asked by Jessica 
poetry
I need help, writing a personification poem about big ben. any ideas?
asked by Shauna 
Physics
The instant before a batter hits a .14 KG baseball, the velocity of the ball is 45 meters per second west. The instant after the batter hits the ball, the ball's velocity is 35 meters per second eat. The bat and ball are in contact for 1.0 x 10 ^2 second.
asked by Nicole 
Math
how do I solve; two parallelograms have the same base length. The height of the first is half the height of the second. What is the ratio of the area of the smaller parallelogram to the area of the larger one?
asked by Kyle 
grade 12 chem
write equations to show the synthesis pathway for ethyl3hydroxybutanoate. An alkane and alcohol of your choice are the starting materials.
asked by time 
Physics
Initially sliding with a speed of 2.3 m/s, a 2.0 kg block collides with a spring and compresses it 0.41 m before coming to rest. What is the force constant of the spring?
asked by Abby 
math
to find of trigonometric ratios of angles 60
asked by atiqullah 
Algebra II
An appliance store manager is ordering chest and upright freezers. one chest freezers costs $250 and delivers a $40 profit. One upright freezer costs $400 and delivers a $60 profit. Based on previous sales, the manager expects to sell at least 100
asked by Sara K. 
precalculus
Graph each complex number. Then express it in rectangular form. 2(cos(4pi/3) + isin(4pi/3)) I don't understand where to go from here.
asked by Tom 
Chem
How much heat (in kJ)is required to convert 2.565kg of liquid sulfur dioxide at the boiling point to a gas at 60C? BP of SO2 is 10C and delta H vap is 25.73kJ/mol. Specific heat capacity of the gas is 0.622 J/g*K I don't know what formula to use to
asked by Staci 
college chem
N2O4 >2NO2 a 1 liter flask is charged with .4 mols of N2O4. at equilibrium at 373 k, .0055 mols of N2O4 remain. what is the Kc for this reaction? please explain to me how to get the rate law for this and solving
asked by josh 
Critical thinking
How would Robert Coles respond to this quote? The ultimate purpose in studying ethics is not as it is in other inquiries, the attainment of theoretical knowledge we are not conducting this inquiry in order to know what virtue is, but in order to become
asked by Amanda 
arts high enviromental science
describe the four properties that scientist use to predict population size
asked by taajahnae 
Calculus
4. Find the dimensions of the largest isosceles triangle having a perimeter of 18 cm. Answer ( all sides 6 cm) i really need help with coming up with the equation of the function before solving its derivative and making it equal zero so far i know 2x+y=18
asked by LALA 
Chemistry
BrO3^(aq)+Sn^2+(aq)+ ____ >Br^(aq)+Sn^4+(aq)+ _____ H20(l)and H^+(aq) are involved in the reaction. What are the coefficients of the six species in the balanced equation above? Remember to include coefficients for H2O(l) and H+(aq) in the appropriate
asked by Anonymous 
trig
prove: cscxcos*2x+sinx=cscx
asked by Sarah Fuller 
Chemistry
For the following reaction at 600. K, the equilibrium constant, Kp is 11.5. PCl5(g) PCl3(g) + Cl2(g) Suppose that 3.314 g of PCl5 is placed in an evacuated 460. mL bulb, which is then heated to 600. K. (a) What would be the pressure of PCl5 be if it did
asked by Anonymous 
english
how would i diagram this sentece "What does the total consecration to god mean"
asked by hunter 
Precalculus
Find two points, one on the horizontal axis and one on the vertical axis, such that the distance between these two points equals 15. NEED HELP PLEASE!!
asked by jh 
chemistry
2 mol of solid iron (C = 25.1 J/(mol K)) is heated from 20C to 200C. How much does its internal energy change? U = q +W but no matter exchange so work is 0. then U=q=9036J But why is q not negative since isnt the system loses its heat to the surrounding
asked by eng 
chemisty
(NH4)2SO4 How many atoms
asked by Patti 
math
What is the probability that exactly three children in a family of five children will be boys? Assume that P(boy)=P(girl)
asked by Andrew 
Chemistry
Are the molecular and imperical formula of lauryl alcohol the same? C12 H26 O?
asked by Aidan 
Chemistry
I conducted the synthesis of an Alum experiment in my lab last week and I'm working on my report. I'm almost done expect I don't know how one could increase the yield of the product (alum crystal)? And also what is the point of adding sulfuric acid? Can
asked by Jerry 
Physics
An ice cube is placed in a microwave oven. Suppose the oven delivers 135 W of power to the ice cube and that it takes 30200 J to melt it. How long does it take for the ice cube to melt?
asked by Anonymous 
Statistics
Two cards are drawn in succession from a standard deck of 52 cards without replacing the first one before the second. a) Are these outcomes are independent? Why? b) Find P ( 3 on 1st card and 10 on the 2nd card) c) Find P( 10 on the 1st card and 3 on 2nd
asked by Katlyn 
College Chemistry
A mixture of He and O2 is placed in a 4.00L flask at 32 degrees Celsius. The partial pressure of the He is 2.7 atm and the partial pressure of the O2 is 1.4 atm. What is the mole fraction of O2?? I don't understand how to do this.
asked by Fernando 
chemistry
What is the volume occupied by 2.20 mol of argon at STP? Round to the nearest hundredth. Don't forget the units.
asked by cynthia 
College Physics**
A student goes to planet x and wants to determine the gravity there. The student knows from physics lab that they can use Atwood's machine to determine gravity. The student places a 100g mass and a 110g mass at the end of a string and hangs it over a
asked by L 
science
which ocean current cools the climate of locations along the northeastern coastline of north america?
asked by Anonymous 
Environmental Science
Please check my answers. 29. In two or three welldeveloped paragraphs, explain how pollutin can come from both natural sources and from human activities. Provide examples of each. It is true that pollution can come from both natural sources and from human
asked by y912f 
math
the officejet printer can copy Janet's dissertation in 10 minutes. The laserjet printer can print the same copy in 20 minutes. If the two machines work together, how long would they take to copy the dissertation?
asked by jen 
Chemistry
Given the equilibrium rxn CF4(g) + 2H2O(l) ⇔ CO2(g) + 4HF(g) ΔH < 0 if pressure is increased by adding argon gas to the equilibrium, I know it doesn't decrease the amount of HF. But if a random gas is added for any equilibrium rxn, will it always cause
asked by Trixie 
math
an observer is standing 200 meters from a hot air ballon, when is rising vertically at constant rate of 4m/sec. how fast is the angle of elevation changing 30 seconds after launch?
asked by vic 
MATH214
Solve each of the following systems, if possible. Indicate whether the system has a unique solution, infinitely many solutions or no solution. (a) 3y = x – 10 y = x – 2 (b)x + y = 5 3x + 3y = 15
asked by Rebecca 
MATH
Find the surface area of the 4 x 4 x 4 cm Prism shown. You may want to draw a net to help you. Remember to answer in the correct units of measure for area. (10 points) (Points :10) 96cm 48cm2 96cm2 3 2. [8.08] Find the surface area of the cylinder with
asked by CHLOE 
Geography
Evaluate the threats to a sustainable China. I need to write four pages on this! I don't know how to evaluate.
asked by Anais 
physics 101
A 72.9 kg man is standing on a frictionless ice surface when he throws a 1.6 kg book at 11 m/s.
asked by Scott 
Chem
The boiling point of ethanol is 78.5C and delta H vap = 40.5kJ/mol. Calculate the vapor pressure (in torr) of ethanol at 0.0C ?
asked by Staci 
Calculus
The edge of a cube is increasing at a rate of 2 inches per minute. At the instant when the volume is 27 cubic inches, how fast is the volume changing? indicate the units of measure. V=x^3
asked by Cassy 
Algebra
What similarities and differences are there between functions and linear equations? Are all linear equations functions? Is there an instance when a linear equation is not a function?
asked by Michelle 
English
1. When is the report due? It is due on Monday. 2. When is the book due? It is due on March 10th. (Are the short dialogues correct?) 3. What are you saying? 4. What are you speaking? 5. What are you talking about? (Are the three commonly used and
asked by rfvv 
alegra
log x + log (x + 3) = 1
asked by Anonymous 
Math
Julio ordered towo pizzas for dinner Friday. Dad ate 3/4 of one pizza, Jenny ate 1/8 of a pizza, Danny ate 1/4 of a pizza, and Mom ate 1/2 of a pizza. What fraction of a pizza was left for a midnight snack? Mr. L answered to my question like this: 6/8 +
asked by Nina 
Math
how do I solve; two parallelograms have the same base length. The height of the first is half the height of the second. What is the ratio of the area of the smaller parallelogram to the area of the larger one?
asked by Kyle 
ALGEBRA
i NEED MORE THAN JUST THE EXAMPLE i ALSO NEED TO EXPLANATION Take any number (except for 1). Square that number and then subtract one. Divide by one less than your original number. Now subtract your original number. You reached 1 for an answer, didn’t
asked by SLIM 
English
1. What's your favorite class? 2. It's math. 3. It's math class. 4. It's a math class. 5. My favorite class is math. Which are the right answers for the question? 6. What's your favorite subject? 7. It's math. (What about the question, #6? Is the question
asked by rfvv 
Math
if line m is parallel to line n and is cut by a transversal and angle 4 =3x  20 and angle 5 = x + 40, what is the value of x?
asked by Oscar 
English
Can you check the grammar in the following sentences, please? 1)The narrator is a voice which (or who?) talks about the story (or who tells the events in a story?) 2) An omniscient thirdperson narrator can be either obtrusive or unobtrusive, depending on
asked by Franco 
French
Could you check these please Part 1 Directions: Complete with either e,es,ées, or s. J'ai pris  des photos. J'ai envoyé  les photos que j'ai pris  à mon amie Catherine. Je les ai envoyé  la semaine dernière. Je les ai
asked by Lisa 
physics
A 380 turn solenoid of length 32.0 cm and radius 3.10 cm carries a current of 4.80 A. Find the following. (a) the magnetic field strength inside the coil at its midpoint mT (b) the magnetic flux through a circular crosssectional area of the solenoid at
asked by christiam 
accounting/auditing
(Drug Benefits and Post Retirement Liabilities) Delphi Company reduced its other post reitrement benefits by approx 500 million because of a change in the law. The federal government will not reimburse companies for prescription drug benefits that it
asked by Moore 
biology
all life forms currently have a basic cell membrane so we presume that the earliest forms of life had this "fence" isolating the internal organization from the external chaos. It is likely that the primordial environment was acidic. In such a case, the
asked by laverne 
PreCal
1) Use the halfangle formulas to determine the exact values of the sine, cosine, and tangent of the angle. 67 degrees 30'
asked by Abby 
chemistry
Calculate the mass in atomic mass units of .25 mol of carbon12 atoms. I don't know how to set it up..
asked by Lola 
Science
The bottled water industry has become an enormous, multibillion dollar a year industry.there are some negative impacts of bottled water idustry on enviroment.many of these bottles are recycled by conscientious consumers, most are not, and are ending up in
asked by anu 
bio
is hydrogenated margarine a trans fat? is butter a saturated fat?
asked by lena 
Chemistry Help 2! :)
Predict whether Fe(OH)2 will dissolve, precipitate, or do neither after: (a) water is added > dissolve (b) Fe(OH)2 is added> neither (c) Solid Fe(NO3)2 is added> precipitate (d) Solid KNO3 is added> neither I'm given the answers...but no
asked by Val 
Biology
10. Which of the following is NOT true about the digestive system of annelids? a. It contains setae to move the food through the anus b. It is similar to an open tube c. It passes nutrients through the intestinal wall to the bloodstream d. It stores soil
asked by mysterychicken 
4th grade
I have a rectangle equally divided into 24 parts I must cut it into 5 pieces and make a new shape. cannot bea rectangle
asked by dylan 
Algebra 2
Solve: e^4x = 120 I did ln4x = ln 120 divided both sides by ln 4 and got 3.4534. Is this correct?
asked by Ana 
science
for my intro i got a 'Water is the elixir of life'and i got lota of negative impact are trasportation, production is the reliance on fossil fuels,Raw plastic must be heated before it can be injected into bottleshaped blow molds, and this heat source is
asked by anu 
MAT 101
Solve for X and Y in the following problems using either substitution or elimination methods. 2X + 5Y = 19 , 3X + 3Y = 15 4X + Y = 22 , 2X + 3Y = 16 12X + Y = 174 , 8X  2Y = 36
asked by SEMA , Need Help 
math
Eighteen marbles are dropped into a jar. There are 8 black marbles, 7 red ones, and 3 silver ones. Marbles are taken from the jar without looking. Use this information to answer these two questions. 1. If one marble is taken, what is the probability of
asked by Oscar 
Physics
the ski boat is traveling at 15 m/s and the tension in the rope is 80 N. If the boat does 3500 J of work on the skier in 54.6 m, what is the angle between the tow rope and the center line of the boat?
asked by Abby 
Chemistry
A solution containing 7.00grm of lead nitrate is combined with a solution containing 7.00g of sodium sulfate. (a) write a balance equation for the reaction. Pb(no3)2 aq + NaSo4 aq > PbSo4 +2 NaNo3. I think that's right. (b)How many moles of the the
asked by Mike 
ALGEBRA
Part B. Each auditorium has both floor seats and balcony seats. Auditorium A has 250 floor seats and 310 balcony seats and Auditorium B has 195 floor seats and 410 balcony seats. Let f represent the cost of a floor seat and b represent the cost of a
asked by SAMANTHA 
math
A bag contains 13 marbles of which 10 are red. A marble is selected at random and replaced. A second marble is then selected at random. What is the probability that both marbles are red?
asked by babygirl 
Physics
An arrow with a mass of 30g is shot straight up to a height of 130m what is the arrow's initial velocity?
asked by Justin 
math
Can somebody PLEASE help me understand how to find the domain of a function. I have an F in algebra 3 and just got a 50% on my math quiz. I'm desperate!
asked by Jennifer 
geometry
which property justifies: if line lm is congruent to line op then line op is congruent to line lm?
asked by joise 
Mathamatics
O is any point on Diagonal DB OF Parallogram ABCD. Prove that Ar (Triangle OAB) = Ar(Triangle OBC
asked by Biswajit 
his 135 HHHEEEEELLLLLLPPPPP!!!!
how did the minority groups struggle for civil rights begin in the 1950s? what event do you think was the most responsible for bringing the public attention to the american cival rights movement? explain why you selected this event? can anyone help history
asked by sam 
math
find the LCM of 11(t7) and 77(t7)
asked by jen 
chemistry
Give the cell diagram notation of the electrochemical cell that could be used to determine experimentally the dissociation constant (Kw) of water. The standard reduction potential for: O2 + 2H20 + 4e > 4 OH 0.40 V
asked by anne 
math
An inheritance of $50,000 is divided into two investments earning 8.5% and 10% simple interest. ( The 10% investment has a greater risk.) Your objective is to obtain a total annual interest income of $4700 form the investments. What is the smallest amount
asked by donna 
Internatinal Relations
Five of the most serious international problems facing the world today are: 1) the proliferation of WMD 2) international terrorism 3) economic development in impoverished countries 4) international financial stability 5) climate change In which of these
asked by Jun 
Algebra
Which of the following expressions equals the sum of the binomial factors of 6q^35q^2+24q20? A. 7q^31 B. 6q^31 c. q^2+6q1 D. q^2+6q+1
asked by KR 
Precalculus
I have posted this question earlier as well but was unable to receive an answer. I don't know how to do this question at all, so PLEASE help me with this question and also show me the steps, so that I can learn. I would appreciate it a lot. A high sound
asked by jh 
math
The median score on a test is 90. Is it possible to add two more scores to the data and still have a median score of 90?
asked by Judy 
math grade 7th
find each unit price to the nearest cent. 3.60/4 pens
asked by Anonymous 
Chemistry
Does anybody know the principle quantum number of an atom that has s, p, d, f orbitals? I'm pretty sure the number is inbetween 24, but I am unsure of how to figure out the principle quantum number just using that information. Thanks in advance!
asked by Marla 
Chemistry
If a weak acid is say only 5% ionized at equilibrium, then the ionization rxn would be reactant favored, correct? I am a little on the fence about understanding this if anyone could better explain why this would be? I am assuming because it is not
asked by Trixie 
psychology
Please submit your endofthe year report by December 31 so we can include your accomplishments in our report the Corporate Office due January 21.Is it appropriate to give the report due date in this sentence? a) No because the reader will not believe that
asked by vedrana 
chem
Releasing oxygen gas, A physical change?
asked by Patti 
Physic
If a person jumps 8.59m horizontelly and jumps at 23 degrees, what is his initial velocity? Plz and thank you.
asked by Mike 
ALGEBRA
Answer the questions below. Use Equation Editor when writing or solving mathematical expressions or equations. First, save this file to your hard drive by selecting SAVE AS from the File menu. Click the white space below each question to maintain proper
asked by SAMANTHA 
Algebra 2
I'm trying to solve 2e^(3x) + 5 = 2 but it's not working put well. Help please, someone?
asked by Ana 
Business Management
Describe the major types of expenditure which are likely to be incurred by a business in maintaining its stocks
asked by Carrol 
psychology
Would the sentence "Time is Money" be good opening line for a letter urging a group of international business executive to come to an immediate decision about an investment opportunity? a)Yes,because then they would realize that delay could hurt them
asked by vedrana 
physics
How much energy is produced when the sun converts one kg of hydrogen into helium?
asked by lisa 
math
4 people need to cross a brige but it is dark outside and they only have one flashlight and only 2 people can cross at one time. doris takes 10 minutes bob takes 5 minutes jack takes 2 minutes and annie takes 1 minute. how can thay get across in 17
asked by jake 
MATH214
Solve each of the following systems, if possible. Indicate whether the system has a unique solution, infinitely many solutions or no solution. x 2y=3 4y 2x=0
asked by Rebecca 
Language arts
ship is to trip as shout is to ??
asked by Alexis 
psy 210
For each of three developmental domains: physical, cognitive, and social/personality, identify two major changes or challenges associated with that developmental stage (adolescence, young adulthood, middle adulthood, and late adulthood). Stage of
asked by brandi 
AR History
Hi. I have to make up a short comic for the 13th amendment. Any ideas?
asked by Morgan 
Chemistry
I am really stuck on these 2 questions: 1. Why was 2M HNO3 added before adding 0.05M AgN03? 2.Write a full equation b.) an ionic equation between silver nitrate solution and sodium chloride solution.
asked by Mahta 
English
I need to paraphrase some lines from Beowulf for tomorrow. I really hope you could answer this as well as the previous message I posted to you. Thank you in advance!! 1) The breath of the dragon billowed (how can I rephrase it? “rose and fell”,
asked by Franco 
Biology
10. Which of the following is NOT true about the digestive system of annelids? a. It contains setae to move the food through the anus b. It is similar to an open tube c. It passes nutrients through the intestinal wall to the bloodstream d. It stores soil
asked by mysterychicken 
Physics
How far from the center of the earth must a person be located in space so t hat his/her weight would be the same as when he/she is standing on the moon?
asked by Geri 
Internatinal Relations
Five of the most serious international problems facing the world today are: 1) the proliferation of WMD 2) international terrorism 3) economic development in impoverished countries 4) international financial stability 5) climate change In which of these
asked by Jun 
english
the diffrences and similarities between the outsiders novel and movie
asked by sam 
statistics
My question is: The school action society asked its members how many hours they had worked during the previous week in parttime jobs. The following data lists the number of hours spent working during the previous week. 6 6 6 4 6 6 9 8 6 3 7 6 6 7 6 6 7 6
asked by Anonymous 
Space Exploration
Space is our final frontier. Agree or disagree. Then explain I really don't know the answer to this. I don't think it is true, but then again, I'm not sure. Why I don't think it is true is because scientists are still making discoveries; they are still
asked by Sara 
Ashworth
supoose you want to heat 440g of water by 20 C how many joules of heat are required.
asked by Daquindre 
science
it is water bottled compony is currentl employing sustainale development first we have to tell breif history about negative impact of industry second we have to explain new sustainable practices of the idustry third we have to tell what is the store in the
asked by anu 
algebra
NEED HELP I AM LOST 2X25X1 1
asked by CHELSEA 
English
If the subject of the sentence is first person, then the verb must be in what form?
asked by christopher 
Chemistry
What are the balanced equation for the following reactions: HCl and Sodium Hydrogen Carbonate HCl and Copper oxide HCl and Calcium carbonate HCl and Magnesium NaOH and Ammonium Chloride
asked by Abigail 
chemistry
what do you notice about the atomic number and the number of protons?
asked by gabby 
phi 105
What are key differences between the ontological, teleological, and cosmological arguments? Identify the philosopher who you think best supports his or her argument. Explain your answer briefly.
asked by trudy 
math214
Joe’s baseball team sold 200 chances to win a $250 set of golf clubs. What is the expected value of a single chance if only one chance wins?
asked by alicia 
math
Express 3.46 as a percent.
asked by Anonymous 
Chemistry
How much KCI dissolves n 100 g of water at 80 degrees C?
asked by John 
science
please help me write a paragragh please it is due tommorow.
asked by anu 
Chemistry
Can you tell me what the systematic name for a compound which has a carbon attached to a phenyl, a double bonded oxygen, and a single bonded oxygen and then a 3 carbon chain is attached to the single bonded oxygen?
asked by Max 
chem
why do S+carvone (caraway oil) and Rcarvone (spearamint oil) have the same IR spectra. I know they are enantiomers/mirror images but why the same IR
asked by jen 
algebra
Part B. Each auditorium has both floor seats and balcony seats. Auditorium A has 250 floor seats and 310 balcony seats and Auditorium B has 195 floor seats and 410 balcony seats. Let f represent the cost of a floor seat and b represent the cost of a
asked by lost need help please 
math
find the domain and range of the function. f(x)= square root of x+3
asked by Jennifer 
psych 210 appendix c
Axia College Material Appendix C Match the psychological theories with the appropriate statement(s): __Psychodynamic Theory __Trait Theory __Learning Theory __Sociocultural __Humanistic Theory A. Individualism versus collectivism B. Popular theorist
asked by lost need help please 
maths
A mixture contains two chemicals, A and B, with masses mA and mB. The total mass of the mixture, m, remains constant. B is converted into A at a rate that is inversely proportional to the mass of A and directly proportional to the square of the mass of B
asked by jessie 
PreCalculus
I'm unsure how to even start this problem Solve for x: Arctan( 4/5 ) + Arcos (2/SQRT(5) ) = Arctan(x)
asked by Kate 
Business Management
Describe briefly the major types of expenditure which are likely to be incurred by a business in maintaining its stocks. Describe those cost, which can be considerable, what reasons might businesses have for maintaining stocks?
asked by Carrol 
English
As agreed, I'm sending you the sentences I rephrased myself. I'm looking forward to your prompt reply (as I need them for tomorrow). Thank you a lot 1) The breath of the dragon flared up from the rock and the ground boomed (reechoed?) Beowulf, concealed
asked by Franco 
Physics
A person walks 24.0° north of east for 2.80 km. How far would another person walk due north and due east to arrive at the same location?
asked by Kate 
Chemistry
Does anyone know what is phenoxyethyolated alchohol?
asked by Jan 
help???
i was wondering if this was cheating by having others look and help us with the work?
asked by tomas 
Social Studies
What to Name My Crossword Puzzle Title..... Subject"Fashion"
asked by Alisha 
Math
You are playing a card gam e with a full deck of 52 cards. You win if you draw a red card that is a mltiple of 5. What are your chances of winning on your first draw? For me will be 4/52 . It's that correct?
asked by Mina 
trig
prove: tan*2xsin*2x=sin*2xtan*2x
asked by Sarah Fuller 
math
Do know a word using capital letters.With 5acute angles,2obtuse angles,andnn 5right angles.
asked by Imear 
Education
Hi, I just have a question about this assignment I have. It says to complete an internet search to find at least two instances of conflicts between the legal and ethical issues confronting the education of ELLs. "For example, some states have ceased
asked by Sarah 
math
Write the probability as a decimal,percent and fraction. A) cannot happen B) is certain to happen C) has a "5050" chance D) will happen about 3 times out of 4 E) has 2 chances in 3 of happening
asked by Anonymous 
Business
Prepare a 600 to 700 word analysis of the relationship between humans and time. Include a description of the historical development of the human ability to conceptualize and measure time. Also, examine why humans have a need to measure time, and describe
asked by Jose 
Writing / History
Help needed coming up with a specific thesis. Here is the prompt: Explore the role of women in Archaic Greek society as presented in the literature examined in class (The Iliad, Sappho's poems, Archilochus, and a book about Ancient Greece by Thomas
asked by Claire 
math214
15) (a) Find 28° 29’ 46”  16° 48’ 59’’ (b) Express 5.4° in terms of  degrees  minutes  seconds
asked by Amiyah 
Algebra 2
e^x2 + 4 = 21 I got .8332, is this correct?
asked by Ana 
math214
Joe’s baseball team sold 200 chances to win a $250 set of golf clubs. What is the expected value of a single chance if only one chance wins?
asked by Sonya 
FRENCH
Could explain the Pronoms Complement D'objet Direct. Thanks for your help.
asked by Marie 
Algebra
How do you solve a parabola if it is like this y=x(squared)+3
asked by Kalie 
us history
What was the importance of the Industrial Revolution?
asked by cool girl 
Financial Accounting
Here is the problem: if you could just help me get started in the right direction that would be great, I don't even know where to begin with this question ellar Company was established to manufacture components for the auto industry. The components are
asked by Nancy 
English
I forgot to include the following statements, too. Thank you very much for your help! 1) A narrator can be external to (?) the story and talk about events he has not taken part in. 2)A thirdperson narrator refers to the characters using the third person
asked by Franco 
Math  # theory
1.8984375 E20 is on a calculator. What is the 20th digit to the right of the decimal. I need to know how to work it, not the answer.
asked by Carrie 
Chemistry
How does the process of chromium electroplating work?
asked by LALA 
romeo and juliet
for my history project, I need to rewrite one scene from Romeo and Juliet. but it has to be modern. say, Juliet can text Romeo, or talk with him on messenger, and so on. which scene should I choose and any ideas how I can change it?
asked by rose marie 
Key skills
how could i use my red hat thinking (feelings and emotcians) to explain why i respect and admire someone ?
asked by Michelle 
Math Help
74w=10w what does w=?
asked by spunky 
Chemistry
I've been asked to find the IUPAC name for polyvinyl acetate. when i type it in google i keep getting butan2yl acetate. but isn't the IUPAC name for acetate ethanoate ..? so would the proper IUPAC name for PVA be butan2yl ethanoate?
asked by Jeff 
cheisty
Water in a wiing pool disolved sodiu chloide othe salts What decribes the water? Homogenous, heterogenous eleent none?
asked by Patti 
chem
How any orbits 4p subshell?
asked by Patti 
Social Studies
To what degree should European modernization be praised or condemned?
asked by Mikayla 
chemistry
if an acid spilled on a highway, what should be done to clean up the spill?
asked by glr 
trig
find the fundamental solution set (FSS) for(cos2θ)(tanθ+1)=0
asked by AppleM. 
Mathematicas
You are playing a card gam e with a full deck of 52 cards. You win if you draw a red card that is a mltiple of 5. What are your chances of winning on your first draw? For me will be 4/52 . It's that correct?
asked by Mia 
government
Please can you help me to answer these questions. 1. Does Britain rule itself today? I wasn't sure how to answer this since it joined the EEC in 2009. 2.Is a country ruled by another called dependent, or a colony? Many thanks for your help.
asked by Sam 
math214
Complete the following: (a) 1400 ft2 = _________ yd2 (b) 1/9 yd3 = _________ ft3 (c) 4.5 lb = _________ oz (d) 32 °C = _________ °F
asked by tonya 
economics
consumer and producer surplus at equilibriun point explain through graph?
asked by arshi 
XECO/212
Locate recent articles in the New York Times or Wall Street Journal in which economists are quoted using positive and normative statements. Provide one quote and its context for both a positive and normative statement. Explain your choice. Evaluate the
asked by Anonymous 
math
find all numbers for which the rational expression is undefined (1/w6)
asked by jen 
math
Ed, Ethan and Nathan are playing a game. Ed has won11 rounds, Ethan has won 8 rounds, and Nathan has won 1 round. Write the relative frequency of Ed not winning a round as a percent. 45%? Is my Answer correct?
asked by Ed 
English
In a long composition, when you write the paragraph that's supposed to "identify the character" what is it supposed to say? their personality or their struggles or the basics of their life in the book?
asked by Ana 
math
The median score on a test is 90. Is it possible to add two more scores to the data and still have a median score of 90?
asked by Judy 
Chemistry
Why is the light from an incandescent light bulb white?
asked by student 
math
A physician prescribed tetracycline suspension for a patient who is to take 2 teaspoonfuls four times a day for 4days, then 1 teaspoonful four times a day for 2 days. How many mls of the suspension should be dispensed?
asked by Anonymous 
marketing
List three attitudes of management that can inhibit the establishment of a high standard of customer service and explain each briefly in your own words.
asked by ana 
com 140
CheckPoint:Job Search Management: Creat a table that lays out a daybyday plan to use as a job aid for your employment search, spanning 3 weeks, Remember that the goal is to obtain an interview and a job offer.
asked by susan 
Chemistry
How does the process of chromium electroplating work?
asked by LALA 
msth 117
Take any number (except for 1). Square that number and then subtract one. Divide by one less than your original number. Now subtract your original number. You reached 1 for an answer, didn’t you? How does this number game work?
asked by monkeybaby 
English
Thank you writeacher for your corrections! These are the very last sentences for you to check. 1) An epic contains formulas, that is, conventional expressions easy to remember, and kennings, which are metaphorical expressions. Beowulf 2) Beowulf is a young
asked by Franco 
trig
prove: cos*2x=csc*2x2/csc*2x
asked by Sarah Fuller 
Mathamatics
OIS ANY POINT ON DIAGONAL DB OF PARALLOGRAM ABCD PROVE THAT, AR(TRIANGLE OAB) = AR(TRIANGLE OBC)
asked by Biswajit 
Geography
Explain the difference between a butte and a mesa. Thank you
asked by fko 
matn214
) Compute 200/198!=
asked by Rebecca 
gr 12 chem
true or false correct/explain those that is false Benzene is generally more reactive than alkanes and less reactive than alkenes because of the bonding in its aliphatic ring The polymer produced from polymerization of H2NCH2COOH is......? Write out the
asked by shelly 
Algebra 2
I don't know if I did this equation right.. ln 6x (greater than or = to) 4 I got 9.0997
asked by Ana 
SCIENCE
what time tutors stay
asked by anu 
English
1. I took a shower so I cleaned the room. 2. I took a shower, so I cleaned the room. 3. I took a shower so that I cleaned the room. (What does #1 mean? Does it mean #2 or #3?) 4. I took a raincoat so I might wear it when it rained. 5. I took a raincoat, so
asked by rfvv 
Business
can you help me with this if you can In reviewing the office's profit and loss statement, the office manager notices a discrepancy between the stated revenue and cash deposits. In fact, it appears the office may have incorrectly booked $250,000 in revenue
asked by Lori 
Marketing
Discuss the relative advantages of pricebased versus nonpricebased competition. Why should most marketers be leery of using a pricebased competitive strategy?
asked by Anonymous 
Geometry
cos x°=15/17 tan 76°=13/x
asked by Chris 
french
Part 2 directions: complete with either es, s, ées, 1. Voilà les photos que j'ai . (prendre) Answer: prises 2. C;est toi qui les as ? (prendre) Answer: prises 3. Bien sûr! Je t'assure que je ne les ai pas .(acheter) Answer:
asked by Lisa 
Physics
What is the equation for work?
asked by Jeff 
geometry
if AB =5x3and CD=2x+9 find AB
asked by tara 
com 140
In what ways do audience, purpose, tone, and structure affect the memo and paper’s formatting?
asked by lee smith 
maths PLEASE HELP
A mixture contains two chemicals, A and B, with masses mA and mB. The total mass of the mixture, m, remains constant. B is converted into A at a rate that is inversely proportional to the mass of A and directly proportional to the square of the mass of B
asked by jessie 
biology 123456723456782345678
The science of nutrigenomics helps us to choose the functional foods which best suit your genetic make up What is the link between your understanding of the human genome and the food you eat? thanks
asked by adam 
math
how do I graph this? y = 1/3 x2 like, I can do the simple ones (ex: y = x+3), where you put random number for x and get the y value and graph it.. but the fraction confused me.. thanks in advance
asked by nina 
math
Do know a word using capital letters.With 5acute angles,2obtuse angles,and 5right angles.
asked by Imear 
MATH
does the series 1/n from n=0 to infinity converge or diverge? what convergence test is this?
asked by math 
science
can you tell me negative impact of water bottled industry
asked by anu 
science
Which foods contain solids,liquids, and gases?
asked by nick 
science
just help me how to start my intoduction on bottled water idustry
asked by anu 
English
I forgot to include the following statements. I really hope you can correct them, too. 1)"The fleetness of the serpent wound itself together ": the serpent quickly (?) coiled itslef up. 2)Beowulf summoned the strength to swing his sword so hard that it
asked by Franco 
Science
Which foods contain solids,liquids, and gases?
asked by Nick 
7th grade
How do you turn a mixed into a proper fraction?
asked by Hailey Lane 
math
Can someone please help. I keep coming up with different answers. 3x  2 > 2x + 4
asked by Virgie 
Calculus
If y=ln((3x+2)^6(x+10)^3), then dy/dx=
asked by Cassy 
Duval
Explain the importance of understanding inventory valuation methods in dertermining the quality of the profit
asked by Dan 
English
1. Paul visited me in order to ask for a help. 2. Paul visited me in order to ask for help. (Which one is correct? Are both grammatical? What is the difference between them?)
asked by rfvv 
Calculus
Determine the convergence or divergence: An=(1)^n(n/(n+1))
asked by Bill 
6th grade math
ok 4/25 * 75/100 then switch it to divison 4/25 / 75/100 but you need the recipricle so its 4/25 / 100/75 =?
asked by spunky 
Algebra
Please help me find the slope and the yintercept for the line repesented by the equation y=3x/2. Thank you.
asked by anonymous 
science
how long does it take to grow different fruits and vegetables? I need a chart! Please!!!
asked by Alex 
math214
Classify the following as true or false. If false, tell why. _______ (a) A parallelogram has four acute angles. _______ (b) A line segment contains an infinite number of points. _______ (c) The union of two rays is always a line. _______ (d) Every
asked by alicia 
ALGEBRA
Can anyone explain this in 50 words why the equation turns out like it does? 6x18=6x+5 0x=23 and can not have zero in the denominator. Division by zero is undefined. 15x+18=15x+18 0x=0 Well, if you take anything times zero the resulting product is zero.
asked by SAMANTHA 
science
why is fair weather common duing periods oh high pressure?
asked by danaeja 
tignometry
prove: sin*2x+tan*2x+cos*2x=sec*2x
asked by Sarah Fuller 
5th grade math
find the surface area of a rectangular with the measurements of 4 5 and 8
asked by nicole 
physic
Explain the term 'artificial radio isotopes'.
asked by Dibash 
math
cable tension
asked by cable 
english
Need help identify logical mistake, in this paragragh. People are overreacting and taking this so seriously, blowing it completely out of proportion. There was no harm done and I don’t see why they are making it a big deal. I seriously doubt any
asked by TRISHA 
math
add (7/w)+(8/w^2)
asked by jen 
math
a jar has 11 red, 16 violet, 6 green and 25 gray marbles. find p (green)
asked by cole 
math
8.023.696
asked by chris 
math
40 is what percent of 800
asked by chris 
scieence
why does the atmophere becomes less dense altitude increases
asked by brittany smith 
math
how do i add these and simplify (7/w)+(8/w^2)
asked by jen 
math
((r+10)/r)+(r/(r+10))
asked by jen