Friday
October 31, 2014

Posts by Ashley


Total # Posts: 2,820

chemistry
for a i got pH=3.97 and for b i got 3.99 for c and d i am stuck.
March 10, 2013

chemistry
i am suppose to calculate the pH at the new conditions, but i am super lost. also for c and d i think you would have to figure out the moles, but then i do not know what to do from there.
March 10, 2013

chemistry
1L of a buffer composed of NaHC2O4 and Na2C2O4 has a pHof 4.0 and a total molarity of 1. a). what would the effect on the pH be of adding 1 gram of sodium hydrogen oxalate to this buffer? b). what would be the effect on the pH of adding 1 gram of sodium oxalate to the original...
March 10, 2013

chemistry
for LiNO3 i found the ionic strength to be .02M for KClO4 i found the ionic strength to be .05M for NaF i found the ionic strength to be .01M i'm stuck on what else to do from here.
March 10, 2013

chemistry
Find the concentration of Ag+ in a saturated solution of AgBrO3 that also contains 0.02M LiNO3, 0.02M KClO4 and 0.01M NaF.
March 10, 2013

chemistry
for my answer i got 597559.1682 is this correct??
March 10, 2013

chemistry
For the reaction 2A(g) + B(aq) + 3C(l)<------> D(s) + 3E(g), the concentrations at equilibrium are found to be: A: 2.3x10^3 Pa B: 1.8x10^-2 M C: 15.8M D: 12.5M E: 5.6x10^4 Torr Find the numerical value of the equilibrium constant that would appear in a conventional table...
March 10, 2013

chemistry
How do i calculate the pKa??
March 9, 2013

chemistry
How many grams of Na2CO3 should be mixed with 50.00g of NaHCO3 to produce 2000mL of buffer with pH=10?
March 9, 2013

Calculus
square root of (12), square root of (12 + square root of (12)), square root of (12+ square root of (12+ square root of (12))) Write a recursion formaula for an(subcription), n greater than or equal to 2.
March 7, 2013

Management for Organizations
Would someone PLEASE check my answers..THANKS in advance!!! 1. Employee inventories and skills inventories are strategies for ________________________. (D) job design promoting-from-within external recruiting human resource planning 2. Which one of the following choices is not...
March 7, 2013

chemistry
1:1
March 7, 2013

Math
A maple tree casts a shadow of 45 ft long. At the same time, a 40-ft-long oak tree casts a shadow which is 60 ft long. Explain how you can use similar triangles to find the height of the tree. Then find the height of the tree.
March 5, 2013

algebra
the primeter of a rectangle is 24ft. the length is 2 ft longer than the width. Find the dimensions. Write a system of linear equations and solve the resulting system. Let x be the length and y be the width. is the answer for the length 14ft and the width 10 ft?
March 5, 2013

algebra
thanks so much.
March 5, 2013

algebra
I am getting lost here. I came up with 8 ft for the length and 4 ft for the width. I hope this is right.
March 5, 2013

algebra
okay 14ft for length and 10 for the width.
March 5, 2013

algebra
the primeter of a rectangle is 24ft. the length is 2 ft longer than the width. Find the dimensions. Write a system of linear equations and solve the resulting system. Let x be the length and y be the width. Is the answer for the lenght 16ft and 8ft for the width?
March 5, 2013

algebra
correction length is 8ft and width is 4 ft.
March 5, 2013

algebra
okay. I came up with 14ft for the length and 10ft for the width.
March 5, 2013

algebra
the primeter of a rectangle is 24ft. the length is 2 ft longer than the width. Find the dimensions. Write a system of linear equations and solve the resulting system. Let x be the length and y be the width, write the first equation. 2x+2y=__ write the second equation. x=y+__ ...
March 5, 2013

Math
You just type in 2.3 x 1.2= ... and it equals to... 2.76. Hope this helped you
March 5, 2013

algebra
X=10.5 y=13 ...so, you place them in cordinate pairs, like this: (10.5,13) x y Hope this helped.
March 5, 2013

Geometry
line xy bisect and is perpendicular to ab and cd. ab=6 and ap=5 what is the length of xy
March 4, 2013

Management for Organizations
Thanks Ms.Sue
March 2, 2013

Management for Organizations
Please, Would someone check my answers??? Thanks. 7. The organizing function includes all but one of the following activities: (D) A..job design B..increasing departmentalization C..establishing authority relationships D..destabilizing authority relationships 2. Why are small ...
March 2, 2013

Math
Muna and Rita had 360 seashells. Muna gave 4/7 of her seashells to Rita. In return, Rita gave 2/5 of her total number of seashells to Muna. They then had an equal number of seashells each. How many seashells did each of them have at first?
March 1, 2013

Language Proof and Logic(Philosophy)
exercise 5.8 write an informal proof of Premises: LeftOf(a,b) | RightOf(a,b) BackOf(a,b) | ~Leftof(a,b) FrontOf(b,a) | ~RightOf(a,b) SameCol(c,a) & SameRow(c,b) conclusion BackOf(a,b) State if you use proof by cases.
March 1, 2013

Chemistry
Consider the reaction 3Fe(s) + 4H2O(g) ¨ 4H2(g) + Fe3O4(s). If the volume of the container is reduced, 1. more Fe(s) is produced. 2. no change occurs. 3. more H2O(g) is produced. 4. more H2(g) is produced. 5. the equilibrium constant increases.
February 27, 2013

Management for Organizations
I don't know Ms.Sue I was not tuned in for some reason..lol Thanks and again sorry.
February 24, 2013

Management for Organizations
I am sorry Ken I am lost in what you are saying are the answers correct or not correct 0_o sorry could you please elaborate. Thanks
February 24, 2013

Management for Organizations
PLEASE CHECK MY ANSWERS 1. Which of the following is NOT one of Peter Drucker’s contributions to management theory? (D) The analysis of how organizations select managers, how managers act, and how organizations are structured in different units. The understanding of the ...
February 24, 2013

Physics
Find the mass of water that vaporizes when 3.94 kg of mercury at 248 °C is added to 0.183 kg of water at 83.0 °C.
February 22, 2013

physics
A container holds 1.3 mol of gas. The total average kinetic energy of the gas molecules in the container is equal to the kinetic energy of a 6.7x10-3 kg bullet with a speed of 830 m/s. What is the Kelvin temperature of the gas?
February 22, 2013

Calculus
Find the integral of x^2 divided by the square root of (2x-x^2) dx
February 22, 2013

Calculus
Thank you!
February 22, 2013

Calculus
Find the integral of x times the square root of (400-100x^2)dx
February 22, 2013

Physics
A test tube in a centrifuge is pivoted so that it swings out horizontally as the machine builds up speed. If the bottom of the tube is 180.0 mm from the central spin axis, and if the machine hits 54000 rev/min, what would be the centripetal force exerted on a giant amoeba of ...
February 22, 2013

physics HELP!
A container holds 1.3 mol of gas. The total average kinetic energy of the gas molecules in the container is equal to the kinetic energy of a 6.7x10-3 kg bullet with a speed of 830 m/s. What is the Kelvin temperature of the gas?
February 22, 2013

Physics
Find the mass of water that vaporizes when 3.94 kg of mercury at 248 °C is added to 0.183 kg of water at 83.0 °C.
February 21, 2013

Philosophy
1."Liberals need to understand the global health argument for abortion is deeply offensive. It is like fighting disease by killing everyone who has a disease" This contains: A. euphemism B. dysphemism C. rhetorical definition D. none of the above My answer is C
February 21, 2013

English
In a research proposal, your sources should not have the potential to answer research questions. True or False.
February 20, 2013

Math 6th grade
117minutes
February 19, 2013

geometry
your neighbor is standing at the top of a 14 foot ladder. the base of the ladder is 4 feet from the house. how far off the ground is the neighbor
February 18, 2013

geometry
your neighbor is standing at the top of a 14 foot ladder. the base is 4 feet from the house. how far off the ground is your neighbor
February 15, 2013

Geometry
I don't have an advenced calculator so I can't do this question so what does ths equal? Thanks. 11 sin 22 =
February 15, 2013

Geometry
The top line is 11 long while the base of the right triangle is x and the angle where 11 and x connect is 22 percent.
February 15, 2013

Geometry
Find the value of x. Round to the nearest tenth. The diagram is not drawn to scale. top 11 bottom x angle between 11 and x is 22 percent.
February 15, 2013

math 5th
4 by 4 feet
February 12, 2013

calculus
evaluate the indefinite integral of (5dx)/(xln(7x))
February 12, 2013

calculus
evaluate the indefinite integral of (9xe^4x^2)dx
February 12, 2013

calculus
Evaluate the indefinite integral of (5dx)/(xln(6x))
February 12, 2013

calculus
evaluate the indefinite integral of ((x+4)/(17+8x+x^2))dx
February 12, 2013

calculus
Evaluate the integral of (((ln(x))^7)/x)dx
February 12, 2013

calculus
Let f(x)= 2ln(cosx), find f''(x)
February 12, 2013

Chemistry
Calculate the pH of a water sample from a playa lake in the western US that has the evaporite mineral potassium bicarbonate (KHCO3) at a concentration of 0.009 mol/kg. Assume the water is in equilibrium with the atmosphere (PCO2 = 10-3.4 bar) and the temperature is 25 ̊C...
February 10, 2013

Chemistry
What would be the pH of a soda water made by saturating pure water with pure CO2 at 1 atm pressure?
February 10, 2013

math
Find an equation of the line (in slope-intercept form) that passes through the point (7,5) and is perpendicular to the line 7x + 10y - 17 = 0 y=?
February 8, 2013

Physics
Thanks! blood's density is 1060 kg/m^3 but it worked perfectly! and makes sence
February 8, 2013

Physics
The blood speed in a normal segment of a horizontal artery is 0.166 m/s. An abnormal segment of the artery is narrowed down by an arteriosclerotic plaque to 1/5 of its normal cross-sectional area. What is the difference in blood pressure between the normal and constricted ...
February 8, 2013

Physics
A person who weighs 506 N is riding a 94-N mountain bike. Suppose the entire weight of the rider plus bike is supported equally by the two tires. If the gauge pressure in each tire is 6.70 x 105 Pa, what is the area of contact between each tire and the ground?
February 8, 2013

math
How do you explain to a 3rd grader that 1/2 + 1/8 > 1 whole
February 7, 2013

Finance
Sheryl’s Shipping had sales last year of $15,000. The cost of goods sold was $7,500, general and administrative expenses were $2,000, interest expenses were $1,500, and depreciation was $2,000. The firm’s tax rate is 30%. a. What are the earnings before interest and ...
February 4, 2013

spanish 102
¿Se peinaron las chicas antes de dormir? Sí, las chicas se peinaron antes de dormir. ¿Te cepillaste los dientes después de comer? ¿Se maquilla Julia antes de salir a bailar? ¿Se duchan ustedes antes de nadar en la piscina?
February 3, 2013

Algebra
The power in an electric circuit varies inversely with the resistance. If the power is 1200 watts when the resistance is 12 Ohms, find the power when the resistance is 6 Ohms.
February 3, 2013

literary
what izs the ouestion
February 3, 2013

Math
Ann had $198 more than her sister. After their mother gave Ann $20 and her sister $60, Ann had twice as much money as her sister. How much money did Ann have at first.
February 1, 2013

math
a helicopter blade spins 775 times in 3 minutes. find the rate of the revolutions per second.
January 31, 2013

Chemistry
How much heat energy, in kilojoules, is required to convert 36.0g of ice at 18.0C to water at 25.0C
January 30, 2013

Physics
Thanks!! Clears up everything
January 30, 2013

Physics
Calculate the kinetic energy that the earth has because of (a) its rotation about its own axis and (b) its motion around the sun. Assume that the earth is a uniform sphere and that its path around the sun is circular. For comparison, the total energy used in the United States ...
January 30, 2013

Math
Two roads intersect at right angles. A water spring is located 65 m from one road and 55 m from the other road. A straight path is to be laid out to pass the spring from one road to the other. Find the least area that can be bounded by the roads and the path. area in m2 = can ...
January 29, 2013

Math
ok.... so is next step take the first derv of the area Area of rect '= -1/2(4-b^2) + (4-2^2)^1/2
January 29, 2013

Math
Would it be safe to say that the the diagonal line in the rectangle could equal r = 2. so I could use b^2+ h^2 =r^2 solve for h h= Square root ( r^2 -b^2) Area = b^2 * Square root (r^2-b^2) area = b*(r^2-b^2)^1/2 ....... ????
January 29, 2013

Math
A mechanical engineering student wishes to inscribe a rectangle in a quarter circle of radius 2.00 cm. Determine the dimensions of the rectangle that will give it the greatest area. length in cm = height in cm = My attempt on find the relationship between the rectangle and the...
January 29, 2013

Math
Thanks Steve.
January 29, 2013

Math
The voltage in a circuit is given by the formula V = 16t3 - 79t. Find the values for t for which V is a maximum or a minimum. larger t in seconds = smaller t in seconds = My Answer: V=16t^3-79t V'=48t^2-79 0=48t^2-79 Sq root of 1.645833 = t 1.2829= t V''=96t ...
January 29, 2013

Math Max min problems
Ok.... great. thank you Steve. I know understand!
January 29, 2013

Math Max min problems
ok. I understand that you took the value and plugged in for i. But can I ask why...
January 29, 2013

Math Max min problems
The power P delivered to a load by a current of i amperes through a resistance of 19 ohms, when 110 volts are supplied at one end of the line, is given by the formula P = 110i - 19i2 . Determine the maximum power that can be delivered. maximum power in watts = My Answer: My ...
January 29, 2013

Math
Oh, sorry I didn't realise that I needed to provide my answer. I just want to check to see if I obtain the correct answer. My answer is: P=110i-19i^2 P'=110-38i 0=110-38i i=2.8947 P"=-38 therefore a max Max Power in watts = 2.8947
January 29, 2013

Math
The power P delivered to a load by a current of i amperes through a resistance of 19 ohms, when 110 volts are supplied at one end of the line, is given by the formula P = 110i - 19i2 . Determine the maximum power that can be delivered. maximum power in watts =
January 29, 2013

PHYSICS
Ms. Anderson shoots an arrow straight up into the air. The arrow leaves her bow at 1.2[m] above ground, and reaches a height of 95 feet above ground. It then falls down and penetrates 14 inches into the ground. Find: a) The velocity of the arrow just before reaching the ground...
January 28, 2013

Physics!
Ms. Anderson shoots an arrow straight up into the air. The arrow leaves her bow at 1.2[m] above ground, and reaches a height of 95 feet above ground. It then falls down and penetrates 14 inches into the ground. Find: a) The velocity of the arrow just before reaching the ground...
January 28, 2013

Physics
Mr. Anderson shoots an arrow straight up into the air. The arrow leaves her bow at 1.2[m] above ground, and reaches a height of 95 feet above ground. It then falls down and penetrates 14 inches into the ground. Find: a) The velocity of the arrow just before reaching the ground...
January 28, 2013

Calculus
I'm not sure what to substitute in this question. Evaluate the integral Square root (tan^-1(x)) / (x^2+1)
January 27, 2013

Physics
A string on a guitar is supposed to vibrate at 300 Hz, but is measured at 305 Hz. By what percent should the tension in the string be adjusted to correct the tuning?
January 27, 2013

Physics
A 7.94 nC charge is located 1.75 m from a 4.18 nC point charge. Find the magnitude of the electrostatic force that one charge exerts on the other.
January 26, 2013

math
a plane flies at 430mph the bearing from Paris to Moscow is 78drgrees and the distance is 1800 mi if the wind is blowing 65mph at 340degrees what heading will take you from Paris to Moscow and how long will it take? include drawing and trip back
January 23, 2013

math
a boat travels at 16 knots 1st leg: 6hr @ S63W 2nd leg: 4hr @ N10E find time and bearing back to port
January 23, 2013

math
list a set of at least 12 numbers that has a minium of 28 maximum of 34 median of 30 mode of 29
January 22, 2013

Calculus 2
I'm confused on how to solve or set up a substitute for the problem. Evaluate the Integral from 1/4 to 1. 1/ sqrt(16t^2 -1) dt
January 22, 2013

English
10. How does Algernon find out where Jack’s house in the country is located? He eavesdrops on Jack.--Is this correct? He has Lane find out. He steals Jack’s mail. Jack tells him. 11. What is Bunburying? Making up a fake identity to avoid debt collectors. Making up a ...
January 22, 2013

Chem
If a 930cm3 piston compresses the air in the cylinder to 1/8 its total volume, what is the pressure after the gas is compressed?
January 21, 2013

Math
What is the unit rate of 8mi and 5h
January 18, 2013

Trig!
a) The annual inflation rate is 3.5% per year. If a movie ticket costs $7.50, find a formula for p, the price of the tickets t years from today, assuming that movie tickets keep up with inflation. b) According to your formula, how much will movie tickets cost in 20 years?
January 15, 2013

math
I need help figuring out the formula for this problem. What might the lengths of a horse enclosure border be if the enclosure is 52 square feet? I have to show my work. Please can someone help me figure it out?
January 14, 2013

physics
You are driving a car 33 down the road. The stoplight in front of you suddenly turns red and you slam on the brakes, skidding to a halt. You get out of the car and measure the skid marks made by your tires to be 23.5 meters (Assume positive x to be in the forward direction) ...
January 11, 2013

Physics THRUST
To begin I just need to know how to do thrust. A lunar lander in powered descent at 100 m above the surface of the moon slows down from a velocity of 20 m/s to 0.5 m/s at constant acceleration. Assume that the lander has a mass of 20,000 kg and that burning the fuel does not ...
January 10, 2013

physics
A lunar lander in powered descent at 100 m above the surface of the moon slows down from a velocity of 20 m/s to 0.5 m/s at constant acceleration. Assume that the lander has a mass of 20,000 kg and that burning the fuel does not change the mass. Answer the following questions...
January 9, 2013

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