Questions Asked on
April 23, 2011

chemistry
what is the solubility of barium sulfate in a solution containing 0.050 M sodium selfate? The Ksp value for barium sulfate is 1.1E10. An insoluble salt with formula MX3 has a solubility product constant written in terms of solubility,s, in the form a)
asked by Sarah (C) 
chemistry
I have many questions. I have a test tuesday and need to get these problems done and understand them today because i am currently studying. I am in college and my professor has not emailed me back regarding solutions for the review problems she posted. Is
asked by Sarah (C) 
2 more physics questions I need help on, please?
In which of these situations does more charge flow past a given point on a wire? a. Current of 4 A in 1 min b. Current of 2 A in 0.5 min c. Current of 8 A in 2 min d. All are the same charge I think the answer is C? Since the formula for finding current is
asked by physicsclass 
algebra 1
A ladder leaning against a house makes an angle of 60 degress with the ground. The foot of the ladder is 7 feet from the foundation of the house.how long is the ladder? please some sugesstions
asked by nena 
College Chemistry I
Calculate delta G and Kc. 2Al(s) + 3I2(s) to 2Al3+(aq) + 6I(aq)
asked by Sonali 
chemistry
A voltaic cell consists of an Mn/Mn2+ halfcell and a Pb/Pb2+ halfcell. Calculate [Pb2+] when [Mn2+] is 2.3 M and Ecell = 0.49 V.
asked by Anonymous 
Physics
Physics Question Help please!!!? A 3.70 kg mass attached to a spring oscillates with a period of 0.375 s and an amplitude of 17.0 cm. (a) Find the total mechanical energy of the system
asked by Anonymous 
Chemistry
what is the highest boiling point to the least HF,HCL, NACL, F2
asked by Danna 
st justin
Many people insist that the Internet is revolutionizing the political process. They argue that Internet debates and online political polls and chat rooms give people greater access to political information. And they’re right that online political chatter
asked by Anonymous 
English
I had to write an compare and contrast essay, but somewhere down the line I got lost. Can someone help me please... Here's what I already have... Into day’s society, online social networking has provided a variety of advantages and disadvantages. The use
asked by Cherrel 
chemistry
what is the net ionic equation for tin + copper 2 sulfate?
asked by cee 
chemistry
what will decrease the total amount of gaseous solute able to be dissolved in a liter of liquid water?
asked by Anonymous 
Physics
The specific heat capacity of ice is about 0.5 cal/g °C. Calculate the number of calories it would take to change a 4 gram ice cube at absolute zero (273°C) to 4 gram of boiling water.
asked by Anonymous 
physics
a stone is from the top of a tower 300m high and at the same time another stone is projected vertically upward with initial velocity 75m/s. calculate when and where the two stone meet
asked by irna 
chemistry
The freezing point of mercury is 38.8°C, is the only metal that is liquid at room temperature. What quantity of heat energy, in joules, must be released by mercury if 2.00 mL of mercury is cooled from 23.0°C to 38.8°C and then frozen to a solid? (The
asked by Lindy 
Chemistry
A 3.23 gram sample of a sodium bicarbonate mixture was reacted with excess acid. 48.52 mL of the evolved gas was collected of the water at .930 atm. and 23.0 degrees C. What is the percentage of sodium bicarbonate in the original mixture?
asked by Adele 
Chemisty
How many grams of sodium bicarbonate mut be decomposed by: HCl (ag) + NaHCO3 (ag) > NaCl (ag) + CO2 (g) + H2O (l) to yield 75.0 mL of carbon dioxide at STP?
asked by Adele 
Math
The areas of two adjacent squares are 256 square inches and 16 square inches, respectively, and their bases lie on the same line. What is the number of inches in the length of the segment that joins the centers of the two inscribed circles? Express your
asked by Mikayla 
physics
A mass of 12.7 kg is hanging by a steel wire 1.02 m long and 1.12 mm in diameter. If the mass is pulled down slightly and released, what will be the frequency of the resulting oscillations? Young's modulus for steel is 2.0 1011 N/m2.
asked by Diana 
Chemistry
What is the mole fraction of methanol CH3OH, in the vapor phase from a solution consisting of a mixture of methanol and propanol CH3CH2CH2OH at 40celsius, if the total pressure above the solution is 131 torr? The vapor pressures of methanol and propanolare
asked by Jude 
Sociology
Which sociological perspective holds the view that people create their social worlds through interaction and manipulation of symbols?
asked by John 
Chemistry
A 5.55g sample of a weak acid with Ka=1.3 x10^4 was combined with 5.00 mL of 6.00 M NaOH and the resulting solution was diluted to 750 mL. The measured pH of the solution was 4.25. What is the molar mass of the weak acid?
asked by Trista Nigh 
physics
A Foucault pendulum is designed to demonstrate the effect of the Earth's rotation. A Foucault pendulum displayed in a museum is typically quite long, making the effect easier to see. Consider a Foucault pendulum of length 16 m with a 109kg brass bob. It
asked by HELP!!!! 
chemistry
How many milliliters of 3.60 {\rm M} {\rm HCl} are required to react with 140 {\rm mL} of 1.60 {\rm M}{\rm Al}({\rm OH})_{3}?
asked by Ivy 
physics
How much charge flows through a 12 V battery when a 2 ìC capacitor is connected across its terminal?
asked by physicsclass 
Statistics (binomial random variable)
Let x be a binomial random variable with n = 10 and p = .4 Find the values. P (x›4) P (x≤4) I could really use some examples to help me get started and understand it. Thanks
asked by sonney32 
JAD
(4x²  2xy + y²) + ( 8x² 9xy – y²) + (x² + xy 8y²)
asked by Anonymous 
Chemistry
What is the vapor pressure in Torr above a solution prepared by mixing 66.73g of benzene C6H6 with 63.26g toluene C6H5CH3 at 20 Celsius. The vapor pressure of pure benzene and toluene at 20celsius are 75 and 22 torr respectively. These compounds form
asked by Jude 
Check my math please
Total Rainfall = rainfall mm x area covered In order to ensure that our values are correct we will need to convert the area covered (the total area of the two tanks) from metres into millimetres. We will also need to convert the total rainfall (KL) into
asked by Tatiana 
Chemistry
How many grams of glycerin C3H8O3 must be dissolved in 375.9g of water at 100 degrees Celsius to reduce the pressure of water above the solution to 714.6mmHg. The solution is a nonvolatile compound
asked by Jude 
careers school ties discussion questions
from the movie school ties, what david green and dillion's pattern of prejudice/discrimination
asked by ted 
physics
When a mass is attached to a vertical spring, the spring is stretched a distance d. The mass is then pulled down from this position and released. It undergoes 52 oscillations in 28.3 s. What was the distance d?
asked by please help!!!! 
geometry
sketch label and mark each figure 1.Isoscles obtuse triangle TRI with vertex angle T. 2.Rhombus RHOM with acute
asked by aisha 
chemistry
Balance each of the following redox reactions occurring in acidic aqueous solution.Express your answer as a chemical equation. Identify all of the phases in your answer. Zn(s) + Na(aq)> Zn2+(aq)+Na(s) Cl(aq) + 2NO3(aq)>NO(g)+Cl2(g)
asked by redgy 
medical billing & coding
If a patient has an individual insurance policy, a release of information does not have to be signed before the physician's office submits a claim to the insurance company. true or false . i put false is that correct
asked by christina 
Chemistry
The freezing point of mercury is 38.8°C, is the only metal that is liquid at room temperature. What quantity of heat energy, in joules, must be released by mercury if 2.00 mL of mercury is cooled from 23.0°C to 38.8°C and then frozen to a solid? (The
asked by Lindy 
science
what quantity of heat must be absorbed to convert 86.1 g of liquid to a vapor at its boiling point, 24.09 c? the heat of vaporization of ch3cl is 21.40
asked by Lindy 
AlgebraVariation
It is a variation problem. I know what the answer is and how to get to the answer I just don't know how I got it. From measurements on many rivers, geographers find that the length of a river that drains a particular "basin" of land is approximately
asked by Lindy 
Chemistry
What quantity of heat must be absorbed to convert 86.1 g of liquid to a vapor at its boiling point, 24.09 c? the heat of vaporization of ch3cl is 21.40
asked by Fred.R 
physics
A mass of 0.394 kg is attached to a spring with a spring constant of 224.2 N/m. Its oscillation is damped, with damping constant b = 14.0 kg/s. What is the angular frequency of this damped oscillation? ω = rad/s
asked by please help!!!! 
Math
(c+24)sin118= csin24 can you please solve for c
asked by Jess J 
geometry.
sketch, label and mark each figure. 1.Isoscles obtuse triangle TRI with vertex angle T. 2.Rhombus RHOM with acute
asked by susi 
Math
Hey I'm working on a math assignment and I'm trying to work out the total amount of rainfall that fell in a certain area. Would this formula be correct? Total rainfall = rainfall mm x duration of storm minutes x area covered And with my rainfall mm I
asked by Tatiana 
Math
Okay so I'm trying to work out how many mm of rain fell in a certain area. I've got the total volume/capacity that fell (3.51125KL) and the total area that it fell in (8558.25m). My formula is Total Rainfall = rainfall mm x area covered How would I make
asked by Tatiana 
pre algebra
In a survery, students were asked whether they play basketball or tennis. Of 34 students, 24 play basketball and 13 students play tennis.4 students play neither. How many students play both sports? Is it 7 students?
asked by Trace 
American Government
According to the AntiFederelist, to strong a government meant?
asked by Patricia Smith 
chemistry
The Ksp of calcium carbonate is 4.5E9. What si the concentration of calcium carbonate in equilibirum in water? do i make an ICE table and please explain Ksp.
asked by Sarah (C) 
Physics
A 30lb weight is attached to one end of a 6ft uniform beam whose own weight is 20lb. Where is the balance point? Thanks in advance.
asked by Stephanie 
physics
What is the period of a simple pendulum that is 2.0 m long in each situation? (b) in an elevator accelerating at 3.0 m/s2 upward (c) in an elevator accelerating 3.0 m/s2 downward
asked by I need help in 2 parts only !!! 
Physics
If a aircraft flie at 1000m/s east it accumulates a 50C of charge as it passes a cloud. How would I calculate magnitude of magnetic force, direction of magnetic force on plane and do the pilots have to make corrections to make up for the difference? Thanks
asked by Russ 
Physics
Still stuck...see post at 3:34pm. I don't think I'm understanding the instructions regarding what #'s to use for sin and cos.
asked by Stephanie 
English
I changed my name to Henry1 because other students have chosen Mike, Mike 1. As you suggested to me, I chose five sentences. Thank you. 1)The trip showed me that there is a big world outside.I decided to take (??) the trip to keep my family good company.
asked by Henry1 
Chemistry
The vapor pressure of water at 95C is normally 6.33.9 but decreased to 561.2mmHg upon addition of an unknown amount of NaOCl to 164.3g of water at this temp. How many grams of NaOCl was added assuming complete dissociation of the solute
asked by Jay 
algebra
a diver dove 94 meters and rose 2 meters every minute for 8 minutes. Where is the diver in relation to the surface? The answer to me would be 94  16 = 78 meters. Why is this wrong?
asked by aria 
chemistry
Determine the pressure when it expands to 10 liters, from a 5 liter ballon at 1 atm and 150k.
asked by bobby 
Statistics
Data Information: Wage Income Statistics: Men VS Women Wage gap, by description, is the difference in salary among two groups of people. The description is associated with the practice of paying one gender more than the other. For many years there has been
asked by Trey 
English
TAMING OF THE SHREW Christopher Sly, a drunk tinker, is being scolded by the hostess of a bar. Why is she angry with him? What is his response?
asked by Jowin 
medical billing
for medicaid cases there is no assignment of benefits unless the patient has other insurance in addition to medical. true or false 2. a two or three form that incorporates a bill, insurance form,and routing document used both computer and paper based
asked by christina 
French
In all French verbs tenses do you add an extra e for females es for feminine plural and s for masculine plural. ? Or is this just for the passe compose or direct object pronoums ?
asked by Dee 
algebra
i forgot how to convert a decimals to a fractions, can u help me solve this: 0.14 percent: 14% fraction: ?
asked by sara 
physics
A satellite of mass m in a circular orbit at a height of 400Km above the earth's surface. What is the Radius of the Earth (given: 6.35 * 10^6) with respect to the center C of the Earth?
asked by Lisa 
Writeacher
Writeacher, I just want my answer to be clarified. So the original idea of boundaries was to separate the land among the territories and provinces...??? And make locations on maps seem easier? I still feel like I'm missing out on some things, but I don't
asked by Anonymous 
trig
an angle 30 with the distace of 24km and an angle of elevation of 45 with the distance of 15km.
asked by joshua 
Grammar
Where do we put the "and" when writing a number, 1234.567 for example, in words? Some references say, "one thousand two hundred and thirtyfour point five six seven. Other references say, "one thousand two hundred thirtyfour and five hundred fiftysix
asked by Daniel 
math subsets
what is the proper subset for 13, 14, 15
asked by Anonymous 
Principles of Accounting
Hot Dawgs! Inc. has 3 managers that work in shifts throughout the day and night. The company also employs 4 cooks and 2 waitresses per shift. There are 3 shifts: morning, afternoon, and evening. The managers are paid an annual salary with a 2% bonus every
asked by Tracy 
algebra 1
What are the values of a and b.if any,where ab2
asked by nena 
geometry
From the top of a lighthouse 210 feet high, the angle of depression to a boat is 27 degress. Find the distance from the boat to the food of the lighthouse. The lighthouse was built at sea level? Please help and for some sugesstions
asked by aisha 
calculus
Find the area of the region bounded by the parabola y=x^2 , the tangent line to this parabola at (10, 100), and the xaxis.
asked by Anonymous 
careers school ties discussion questions
am sorry.From the movie'' school ties'', what was david green and dillion's pattern of prejudice/discrimination
asked by ted 
6th grade math
Which proportion can you use to find the width of a full size railroad track? of 1 millimeter for every 87 millimeters in a full size train. The model railroad cars run on a track that is 16.5 mm wide. f) 1/87 = x/16.5 g) 1/87 = 16.5/x h) 1/x= 87/16.5 j)
asked by Suzanne 
Physicstotally bewildered!!
I have a physics question. This is for extra credit which I really need to earn If I made a solar cell how would I know which material is best to use if given choices like aluminum with a work function of 4.1eV at a cost of 2.40Kg or platinum with a work
asked by Joni 
math
The mean time for running a mile is 450 se4conds with a standard deviation of 40 seconds. What time would you need to beat to be in the top 10%?
asked by Sue 
chemistry
If Tums is added to 55.0 {\rm mL} of 0.750 {\rm M}{\rm HCl}, how many grams of {\rm CO}_{2} gas are produced?
asked by Ivy 
Chemistry
What would Qc be if the volume of the container increased by a factor of 1.604 for this reaction SO2+Cl2 SO2CL2 kc = 12.821 at 373K
asked by Jude 
CRIMINOLOGY
In what areas should the federal authorities not become involved?
asked by John 
Algebra
The area of a rectangle is given by x^24x21. What are the dimensions of the rectangle?
asked by Jamie 
principle of managemen
Read the following case study: Conflicting Views and submit your answers to the questions at the end of the case study. CASE STUDY: CONFLICTING VIEWS “You’re from the old school,” said Rita. “A little change never hurt anyone. You know the old
asked by Zhanna 
life orientation
topic:teenage pregnancy. In 1o15 lines critically discuss 5 ways in which the human/environmental problem impacts on the community.pls provide me with relevant sources to support your claim
asked by lebogang 
Algebra
I need help! Fin the inverse of the function, How do I work the below problem. I need an example do to all the examples I have all have an (fx, g or y) I am working 6 problems like this. {(1, 0), (2, 1), (1, 0), (2, 0)}
asked by Jeannie 
maths
Use the quadratic formula to solve the equation x^27x+9=0 I've tried to do this manytimes but can't seem to get it. I've other questions like it so if someone could talk me through this one maybe i'd understnad the method better thanks.
asked by susan 
204 his
question? Full Reconstruction proved to be a failure. Reconstruction  as defined  was the process of restoring the Confederate states, while integrating Western states, into the Union (without slavery) following the Civil War.Can anyone help with some
asked by meshelle 
science
hydrogen gas combines with nitrogen to form ammonia how do we translate and then balance this equation?
asked by saniya 
math
Meka plans to bake a large circular cookie for her brother. She wants to decorate the outer edge of the cookie with small pieces of chocolate. The radius of the cookie is 7 inches. Which is the closest to the circumference of the cookie?
asked by mickeymouse 
programming
Create a Flash movie that uses motion animation to change a figure from a large size to a small size and back as it moves from the top to the bottom of the right side of the stage.
asked by chris 
world history
Can you compare Syria's education level of population with the France's back in the days before the french revolution?
asked by Lindy 
Math
Could someone answer this question so I understand it. Thanks Given the supply function: p = S(x) = 5(e^0.02x1) Find the average price (in dollars) over the interval [31,36]. Only the 0.02 is ^ in the e in the question.
asked by Jules 
math
Could someone answer this question. im stuck on it. Id appreciate it. Use substitution to find the indefinite integral. çp(p+3)^5 dp Use C as the arbitrary constant.
asked by JL 
Accounting
Axel Corporation acquires 100% of the stock of Wheal Company on December 31, Year 4. The following information pertains to Wheal Company on the date of acquisition:
asked by B 
geometry
What are the values of a and b.if any,where ab2
asked by aisha 
calculus
Find the volume of the solid obtained by rotating the region bounded by y= x^3 and x= y^3 about the line x= 1.
asked by Anonymous 
social studies
what 3 cities where the worst place to be a slave in 1852
asked by Anonymous 
6th grade math
Linda is painting a design. Each tube of paint will cover an area of 51 square centimeters. At least how many tubes of paint will Linda use to paint section c? Note: section c is 6cm The answers to choose fom are a) 1 b) 2 c)3 d) 4 I tried 51 divided by 6
asked by Suzanne 
business law
what are 3 decision traps that influece human judgment and decision making? legal consequences of falling into the traps?
asked by Tony 
algebra
could someone please explain to me how 5/8 + 1/4 = 3/8? I have several more of these problems 5/8 + 1/6 = 19/24, and more. I have no reference in my text on how to do these. Can someone take me through the steps?
asked by aria 
English
I forgot to ask you the following question. I included a few other questions. Thank you very much. 1) When giving instructions on what to do before boarding a plane to a person who has never flown, shall I use "you have to", "you + simple present", "you
asked by Henry1 
trig
I need help with this problem: If San Francisco Giants homerun king, Barry Bonds, hit a baseball due west with a speed of 50.0 m/s, and the ball encountered a wind that blew it north at 5.00 m/s, what was the resultant velocity of the baseball?
asked by Yareli 
ELA
I NEED A SUMMARY OF THE BOOK FRINDLE I CANT FIND THE BOOK PLEASE HELP AND CAN YOU JUST SUMMARIZE THE CHARACTERS
asked by macy 
History
What did Kennedy hope to accomplish with the New Frontier?
asked by Kelsey 
chemistry
Is it possible to calculate the value of the solubility product constant without being given any concentrations?
asked by Paul 
geometry
find the surface area with a height of71 ft and a radius of 62 ft
asked by Anonymous 
business math
1. $5030 at 8% from January 3 to July 4 what is the interest rate and maturity value
asked by mya 
medical billing & coding
insurance claims may not be legally denied for payment even if submited after the insurance company's time limit. true or false
asked by christina 
physics
Determine the force of interaction between 2 electric charges q1= 1x106 C and q2= 2x106 C at the distance r = 2 m. I think the formula is F=kq1*q2/r2? How do I find k?
asked by physicsclass 
health care
the insured may not necessary be the patient seen for medical service. true or false
asked by christina 
PhysicsSomeone please recheck
Bob Pursley rechecked my question and it was correct if you scan down but he didn't direct me where to find direction of magnetic force on plane and do the pilots have to make corrections to make up for the difference? I'd appreciate any help with that, if
asked by Russ 
sciene
how can solar power work at night
asked by saira 
Character Buidling
My Character Building Teacher had given me a project to write the names of the people we hate on a nonboiled raw potato, and put it inside a clear plastic, locked, and not to be opened until the project is finished. Everyday, we should take an observation
asked by Elizabeth 
geometry
In triangle ABC, if
asked by susi 
Physics
Can someone please help me with this physics question? I have most parts of the question answered already. (i only need help with b and c). Thanks The motion of a body is described by the equation 3.50 sin (0.100ðt)where t is in s and y is in m. (a) Find
asked by Anonymous 
maths
the graph of y=(x^2/3)=2x=24 is a parabola. 1) is the parabola ushaped or nshaped. how can you tell this from the equation?
asked by elizabeth 
calculus
finding limit using epsilon and delta of lim x>2 x^33x+7=9..plz anyone solve it for me....
asked by Yashna Islam 
French
I don't know when I should add an e to indicate female in verbs/tenses Is the following correct ? je me lave (masculine) or je me lavee (female) il se lave elle se lavee Many thanks Dympna
asked by Dee 
JAD
x² + 18x 4 = 0
asked by Anonymous 
Physics
A 10kg ladder 2.5m long rests against a frictionless wall with its base on the floor 80cm from the wall. How much force does the top of the ladder exert on the wall?
asked by Steph 
Psychology
I'm doing a presentation on Friday and I want to explain the General Aggression Model in more detail. I can't think of a way to explain "Aggressive perceptual schemata", "Aggressive expectation schemata", and "Aggressive behavior scripts" to the class. Any
asked by Emily 
JAD
8.09 x 10,000,000,000 =
asked by Anonymous 
JAD
49a² + 16 – 56a
asked by Anonymous 
Character Buidling
My Character Building Teacher had given me a project to write the names of the people we hate on a nonboiled raw potato, and put it inside a clear plastic, locked, and not to be opened until the project is finished. Everyday, we should take an observation
asked by Lisa 
Math
Gary mailed a box that weighed 2 pounds 8 ounces. The postage cost $15.60. How much was the postage in cents per ounce?
asked by Chelsea 
hlulani
what are the human and environmental problem on the community.5 ways briefly
asked by hlamazi 
Jules
Could someone answer this question so I understand it. Thanks Given the supply function: p = S(x) = 5(e^0.02x1) Find the average price (in dollars) over the interval [31,36]. Only the 0.02 is ^ in the e in the question.
asked by Anonymous 
Chemistry
In a copper cycle lab, where could have the lost copper might have went? Let's say I did a copper cycle lab and my final weight of the copper is less than what i started with. Where did it go?
asked by Lindy 
physics
does the frequency of light influences how it is reflected
asked by ashley  
Chemistry
How do you figure out hydrate formulas?
asked by Will 
algebra
what is the area of length 5 and with 6
asked by abi 
algebra1
From the top of a lighthouse 210 feet high, the angle of depression to a boat is 27 degress. Find the distance from the boat to the food of the lighthouse. The lighthouse was built at sea level. please some sugesstions.
asked by nena 
algebra 1
sketch, label and mark each figure. 1.Isoscles obtuse triangle TRI with vertex angle T. 2.Rhombus RHOM with acute
asked by nena 
Physics
Q #2: (only other one I'm stuck on...) A 10kg ladder 2.5m long rests agaist a frictionless wall with its base on the floor 80cm from the wall. How much force does the top of the ladder exert on the wall? I've found answers to similar questions on this
asked by Stephanie 
6th grade math
Is there a quick way to get the answer to this problem without doing a calculation of each possible answer. These numbers are arranged from greatest to least. Which value is next. F) 1/2 G) 0.58 H) 6/8 J) 0.65
asked by Suzanne 
Writeacher
What happened when the establishment of a boundary between British columbia and Alaska came about?
asked by Anonymous 
calculus
Find the volume of the solid obtained by rotating the region bounded by y= x^2 and x=y^2 about the xaxis.
asked by Anonymous