Questions Asked on
August 10, 2009

GChem
1. 25mL of 0.1M HCl is titrated with 0.1M NaOH. What is the pH when 30mL of NaOH have been added? 2. 25mL of 0.1M HCl is titrated with 0.1M NaOH. What is the pH after 15mL of NaOH have been added? I don't know how to make calculation I assumed that for
asked by Mike 
AP Physics
In order to pass a physical education class at a university, a student must run 1.0 mi in 12 min. After running for 10 min, she still has 500 yd to go. If her maximum acceleration is 0.15 m/s2, can she make it? If the answer is no, determine what
asked by nicky 
''To Kill a Mockingbird" by Harper Lee?
Jem and Scout's respect for their father is greatly increased when he: a. Collects a large fee from a client. b. Argues with Mrs. Dubose. c. Shoots a mad dog. d. Stops a burglar. Atticus receives payment from Mr. Cunningham as: a. Hickory nuts and stove
asked by Ernest 
chem
Equal volume of a 0.02 M Zn+ solution and a 2.0M NH3 solution are mixed. Kf for [Zn(NH3)4] is 4.1*10^8. If enough sodium oxalate is added to make the solution 0.1 M in oxalate, will ZnC2O4 precipitate. Ksp ZnC2O4= 2.7*10^8. I set up an ICE table which
asked by Sara 
math
divide 100 loaves of bread amoung 5 men so that the amounts are in arithmetic progression ( increase by the same amount each time) and the sum of the three largest shares is seven times the sum of the two smallest.
asked by jake 
math
A new model of car is available in 4 exterior colors and 3 interior colors. Use a tree diagram and specific colors to show how many color schemes are possible for the car. Solve the problem using an alternative method as well.Note that you are asked to
asked by Mike 
Chem
For the reaction I2(s)+Cl2(g) ==> 2ICl(g) delta H= 36kJ, delta S= 158.8J/K at 25° C. Calculate the temperature at which Keq is 4.0*10^3. delta G= (delta H) T(delta S) = 36  (298)(0.1588) = 11.32 delta G= RTlnK 11.32= 8.31Tln(4*10^3) 11.32= 6892.35
asked by  
Physics
An average family of four uses roughly 1200 liters (300 gallons) of water per day. (One liter = 1000 cm^3.) How much depth would a lake lose per year if it uniformly covered an area of 50 square kilometers and supplied a local town with a population of
asked by Zack 
Physics
GPS can be used to determine positions with great accuracy. The system works by determining the distance between the observer and each of the several satellites orbiting Earth. If one of the satellites is at a distance of 20,000 km from you, what percent
asked by Zack 
word problem Math
A pollster interviewed 500 university seniors who owned credit cards. She reported that 240 had Goldcard, 290 had Supercard, and 270 had Thriftcard. Of those seniors, the report said that: 80 owned only a Goldcard and a Supercard, 70 owned only a Goldcard
asked by Kendra 
physics i got link
h t t p : / / i m g 4 . i m a g e s h a c k . u s / i m g 4 / 9 2 9 0 / p i c t u r e d q e . j p g
asked by Physics i got link 
Chemistry
If 25mL of 2.00M NAOH is added tpo 50mL of 0.10M HC2H3O2 (Ka=1.8*10^5), what is the pH? moles HC2H3O2= c*v = .1 * .05L = .005 moles NaOH= c*v = .2 * .025L = .005 pH= Pka + log (B/A) = 4.75 + log (.005/.005) = 4.75 I'm not sure how to calculate the moles I
asked by Sara 
Chemistry
1) How many drops of 12M HCl would you add to 1.00 L of 0.100 M HC2H3O2 to make [C2H3O2] = 1.0 x 10^4 M? Assume that 1 drop = 0.050 mL and that the volume of the solution remains 1.00 L after the 12 M HCl is diluted. [Hint: What must be the [H3O+] in the
asked by Chem 
AP Physics
A glider on an air track carries a flag of length through a stationary photogate that measures the time interval td during which the flag blocks a beam of infrared light passing across the gate. The ratio vd = / td is the average velocity of the glider
asked by nicky 
chem
The solubility product of silver sulfate is 1.6* 10^5. What is the molar solubility of this compound? Ksp= [Ag]^2[So4^2] 1.6*10^5 = x^3 x= .0252 but the answer in my book is (16/4)^1/3 *10^2 which equals to 0.158
asked by Sara 
physics (geography bit)
Thanks for the help guys!!! I really appreciate it!!! ok I drew the thing as caerfully as I good h t t p : / / i m g 3 7 . i m a g e s h a c k . u s / i m g 3 7 / 7 8 0 7 / f i r s t d w s . j p g ok I redrew it chekc it Ok I followed the directions and
asked by physics (geography bit) 
Chemistry
The PH of an aqueous solution of NaCN is 10.38. What is [CN] in this solution?
asked by ChemHurts 
algebra
The denominator of a fraction is 12 more than the numerator. If 16 is added to the numerator and 16 is subtracted from the denominator, the value of the resulting fraction is equal to 2/1. Find the original fraction
asked by Sarah 
HCA 210 Introduction to Health Care
What is the definition of mental illness? Can mental illness be as clearly defined as a physical illness such as diabetes? Can mental illness be cured? o Has the concept of deinstitutionalization been effective in providing needed services to the mentally
asked by Nicole 
Math
Sonja is paid $42.50 per hour as a veterinarian. She is paid 1 1/2 times the regular rate for all time exceeding 7 1/2 hours in a day or 37 1/2 hours per week. Work on a statutory holiday is paid at double time. What were her gross earning for a week in
asked by Tha 
math
how do you solve this problem: 147.5% as a decimal
asked by patricia 
MaTH
Danielle bought a gift for a friend that originally cost $32. She used a coupon to get $5 off. what percent did she save? I tried working 325=27, 32divided by 27 = 1.185 ???
asked by DEBBIE 
physics (geometry bit)
h t t p : / / i m g 4 3 . i m a g e s h a c k . u s / i m g 4 3 / 4 7 4 1 / 9 4 7 4 7 1 1 6 . j p g ok the two read angles are equal to each other because they are complementary if i remeber correctly the only thing we can conclude is that when we add the
asked by physics (geometry bit) 
Critical Thinking
Over time, nonspecialists are usually able to assimilate radically new scientific ideas, even though these ideas may seem strange when they are initially introduced. Such was the case with Newtonian physics; when Newton proposed his ideas regarding motion
asked by Sablan 
Heath Care Introduction
# What is the definition of mental illness? Can mental illness be as clearly defined as a physical illness such as diabetes? Can mental illness be cured? # Has the concept of deinstitutionalization been effective in providing needed services to the
asked by anonymous 
Chemistry
An 0.0284 aqueous solution of lactic acid is found to be 6.7% ionized. Determine Ka for lactic acid. HC3H5O3 + H2O H3O^+ + C3H5O3^ Ka =? Thanks.
asked by Sev 
physcs (Geometry bit)
how do you prove that an object on a ramp resolved into it's gravity components were the x dreiction is down the ramp and the y direction is the direciton of the normal force Force of gravity x component /\ Normal force
asked by physcs (Geometry bit) 
economics grad level
I cannot figure this our for the life of me!Assume that the gross national debt initially is equal to $3 trillion and the federal government then runs a deficit of $300 billion. What is the new level of gross national debt? What happens to the amount of
asked by queenie 
statistics
A researcher has observed independent samples of females and males, recording how long each person took to complete his or her shopping at a local mall. The respective times, in minutes, are listed in file. Using the 0.025 level of significance in a
asked by Lina 
managerial accounting
The Joyner Corporation originally budgeted for $360,000 of fixed overhead. Production was budgeted to be 12,000 units. The standard hours for production were 5 hours per unit. The variable overhead rate was $3 per hour. Actual fixed overhead was $360,000
asked by natasha 
Math
Bosley's Pet Foods buys dog kibbl for $19.50 per bag, less 40%. The store's overhead is 33 1/3% of the selling price, and the desired profit is 10% of the selling price. (a) At what price per bag should the dog food be sold? (b) At this price, what is the
asked by Tha 
Website.need it please!
Can any one help me to find which website is good for high school student to learn more subjects online with others without paying or any good website for doing home work or school game?. thank you.
asked by Ochaya 
Chemistry
What molar [] of silver ion could exist in a solution in which the [] of CrO4^2 is 1.0*10^4 (Ksp of Ag2CrO4= 1.1*10^12) Ksp= [Ag]^2 [CrO4^2]
asked by Anonymous 
Physics (Geometry bit)
ok i got my diagram posted question earlier it wouldn't let me post anymore I'm really sorry guys just trying to get my diagram to work =[ ++++++++++++++++++++++++++++++ ++++++++++++++++++,++++++++++/\ +++++++++++++++++++++++++++++
asked by Physics (Geometry bit) 
business
Your management team has been retained by a senior manager who is concerned about the effectiveness of his managers and their teams. He would like your team to develop a training guide on delegation. The training guide should be designed to improve the
asked by Anonymous 
Physics
The Earth is surrounded by an electric field on its surface that points toward the center of the Earth with an average magnitude of 150 N/C. If there is an electron that is released in vacuum at the Earth’s surface, what will the acceleration due to the
asked by Victor 
physics
i have a question in my book centripetal acceleration = r^1 v^2 ok I agree but in my book acceelration is labeled as a vector but yet the velocity is not... Why?
asked by physics 
literature  11th grade
define "period structure
asked by josh 
biology
just wondering how the moss, ferns and angiosperms life cycles are similar and different. I really don't understand this reproductive stuff. sim's all three life cycles alternate between haploid and diploid. I don't know much here so i can't fill in much
asked by Jim_R 
gen
What is the relationship between ethics and critical thinking? Why are ethics a concern in the academic environment? I have no clue so any will do
asked by troyer0269 
com 140
what is the answer for discussion question 1 and 2
asked by pinky 
Eth
How well do you think Native American organizations, like the Bureau of Indian Affairs (BIA), the National Congress of American Indians (NCAI), and the National Indian Gaming Association (NIGA), are helping Native Americans to advance?
asked by Haley 
Algebra Word Problem Help
Two wine merchants enter Paris, one of them with 64 casks of wine, the other with 20. Since they have not enough money to pay the custom duties, the first pays 5 casks of wine and 40 francs, and the second pays 2 casks of wine and receives 40 francs in
asked by Breanna 
business statistics
Please can you give the formula to do this exercise, Thank you. A sample of 40 investment customers serviced by an account manager are found to have had an average of $23,000 in transactions during the past year, with a standard deviation of $8500. A
asked by Heidy 
math
86=9 + 32 problem1  5 problem 2 2=45t
asked by evan 
english
In the sentence Hiawatha is the hero of an Indian Legend, is hero an adjective describing Hiawatha.
asked by George 
history
The election of Arnold Schwarzenegger is an example of ?
asked by Alvin 
law and ethics in medicicine
if dr. jones is practicing defensive medicine what is likely to be his motivation for doing so
asked by Anonymous 
Social Studies
How has the conflict (war) changed Iraq?
asked by Madison 
MaTH
a can of soda contains 40 milligrams of sodium. how many cans woild it take to concume a gram of sodium? I tried working, not sure if correct help 40 X 0.001 = 0.04
asked by DEBBIE 
calculus
Integrate: (The Sq. Root Of x2)/x+1 dx Let u= (Sq. Root Of x2)
asked by Jessica 
math
Let C = {p, l, u, s}. How many proper subsets does C have?
asked by Kim 
science
What do you predict will happen to the nutria population after all the land is depleted of the nutrias’ food resource?
asked by Sarah 
english
where can i find the text of r.m.s titanic online?
asked by bindiya farswani 
gen
this is my schedule I made up.. What does everyone thing? I do take breaks for other things during these times but not a long break. Days Sunday Monday Tuesday Wednesday Thursday Friday Saturday Sunday 12:00 noon to whenever Monday 7:00 pm to 10:00 Tuesday
asked by troyer0269 
science
What are the challenges of managing your chosen terrestrial resource issue? What human activities contribute to the problem?
asked by Bebe 
English  A lesson before dying
I have a question for school over Ernest Gaines's A Lesson Before Dying that I can't answer because I don't remember it and don't have the book anymore (I borrowed it from the library and already returned it). What does Jefferson mean when he says, “I
asked by Bobby 
history
in what ways does Magna Carta still impact laws
asked by tasha 
Chem
For the reaction I_2(s)+Cl_2(g) ==> 2ICl(g) ÄH= 36kJ, ÄS= 158.8J/K at 25° C. Calculate the temperature at which Keq is 4.0*10^3. ÄG= ÄH TÄS = 36  (298)(0.1588) = 11.32 ÄG= RTlnK 11.32= 8.31Tln(4*10^3) 11.32= 6892.35 T T= .00164 correct
asked by  
Physics
The Earth is surrounded by an electric field on its surface that points toward the center of the Earth with an average magnitude of 150 N/C. If there is an electron that is released in vacuum at the Earth’s surface, what will the acceleration due to the
asked by Sammy 
math
I don't understand what I have to look for. Examine several newspapers and magazines and describe at least three examples of functions that appear. What is the domain and range of each function?
asked by tricica 
english
Does theses sentences sound right with a semicolon in. Jerry loves golf; he plays it every day. When she is worried; Lucille eats a lot.
asked by cindy 
english writing
Does this sentence sound alright with a correct apostrophe used in it. It's up to you to decide what to do.
asked by betty 
english writing
Is this a could sentence with good punctuation in use of it. Behind my house is a tall, blue spruce tree.
asked by betty 
english
I need to abbreviate in a sentence so does this look good. Martha is a member of Parents for Responsible Teens (PRT).
asked by cindy 
civics
the senate power of advice and consent does not apply to the federal judges true or fales . and what's the right answer. is it true
asked by roc 
Algebra
Complete the square to obtain exact solutions: x^2+6x+13 = 0 2x^25x3 = 0
asked by Alicia 
Math
How many angles in a triangle?
asked by Eric 
sociology
What role does the public play in determining the practice rights of midwives, and how does this role impact the AMA's position on the subject?
asked by steve 
Design
How does the use of jewellery affects people in the society? (both negative and positive affects) How it affects how people look, feel or act?
asked by Emerald 
social studies
How did the search for a viable labor force affect the development of the southern colonies? What was the role of AfricanAmerican slavery in the early colonial settlements? Why were two southern colonies initially resistant to slavery?
asked by Anonymous 
Science
What is renewable energy?
asked by Sarah 
Math
What are the odds in favor of getting at least one head in three successive flips of a coin? Answer: 1/2 Is this correct? Could you please explain if I got it wrong? Thanks.
asked by B.B. 
technology
What is air transport?
asked by kk 
eng'g materials
can someone help me find a site that can help me explain about "electric refining process" thanks a lot
asked by akitsuke 
Math
On a TV game show, the contestant is asked to select a door and then is rewarded with the prize behind the door selected. If the doors can be selected with equal probability, what is the expected value of the selection if the three doors have behind them a
asked by B.B. 
Physics
I have to plot a graph of Pressure gradient vs average velocity (water in a pipe, I have all the data). I plan to put the average velocity on the x axis, since I could control that better in an experiment. Do you agree/ Thanks. Charlie
asked by Charlie 
sociology
What are the messages about the meaning of being female that were communicated by "girls' rules" basketball?.
asked by steve 
SS
My 4th grader needs to draw a picture for her SS words we are having trouble with the word "Region" if anyone can help I thank you in advance.
asked by Amanda 
Differential Calculus
A ball thrown up has a height f(t)=250t25t^2 after t seconds. (1) find the maximum height (2) find the velocity when it hits the ground.
asked by matrix school 2 
social life
What aspects of social life do you expect not to undergo substantial change prior to the middle of the 21st century?
asked by phil 
Math
The game of dots is played by rolling a fair die and receiving $1 for each dot showing on the top face of the die. What cost should be set for each roll if the game is to be considered a fair game? Answer: The equally likely outcomes of each roll are
asked by B.B.