Wednesday
August 27, 2014

Posts by amber


Total # Posts: 1,072

AP CHEMISTRY HELP
Thank you so much. Also, would this same procedure be used for when there's an air bubble in the titration?
December 20, 2012

AP CHEMISTRY HELP
a) A student fails to wash the weighing paper when transferring the KHP sample into the beaker. What effect does this error have on the calculated molarity of the NAOH solution? Mathematically justify your answer. b) A student failed to notice an air bubble trapped in the tip ...
December 20, 2012

math
explian in writing how waould you use a number line to round 148 to the nerst ten
December 4, 2012

physics, please help!
(a) Find the current in each resistor of the circuit shown in the figure byusing the rules for resistors in series and parallel. (b) Write three independent equations for the three currents using Kirchhoff’s laws: one with the node rule; a second using the loop rule ...
November 28, 2012

precalculus
Why can't you answer your own homework questions? You can't stroll through life being a cheater.
November 27, 2012

Math Essentials
How many ways can an IRS auditor select 4 of 9 tax returns for an audit?
November 27, 2012

Chemistry
True because I did learn that the lower the pH the more acidic it is.
November 25, 2012

Chemistry
The hydronium ion concentration in coffee is 1 x 10^-5 M. What is the pH of coffee?
November 25, 2012

Chemistry
The hydronium ion concentration for a solution is determined to be 4.5 x 10^-7 M. What is the concentration of the hydroxide ion? I just wanted to let the people that are being nice enough to help me know that this is for a study guide. It is not a test or quiz. :0) Thanks.
November 25, 2012

chemistry
I want to say because it has more of the reactant. Am I right?
November 25, 2012

chemistry
Write a balanced equation for the proton transfer reaction between water and phosphate ion. Determine in which direction the equilibrium is favored.
November 25, 2012

Chemistry
When a 5.00 ml sample of vinegar is titrated, 44.5 ml of 0.100 m NAOH solution is required to reach the end point. What i sthe concentration of vinegar in moles per liter of solution?
November 25, 2012

Chemistry
How much heat would be released by burning one gallon of octane? The density of octane is 0.703g/mL. 1 gallon= 3.79 liters.
November 21, 2012

algebra
Do the equations x = 4y + 1 and x = 4y – 1 have the same solution? Justify your answer with an explanation or a graph. How might you explain your answer to someone who has not learned algebra?
November 20, 2012

english
Select the gerund phrase in the sentence below. Then, determine the noun function of the gerund. 1. Water skiing, sailing, and swimming are my favorite summer sports. 2. I enjoy playing the piano.
November 16, 2012

physics
A 50.0-g sample of a conducting material is all that is available. The resistivity of the material is measured to be 11~ 10-8 ƒ¶m and the density is 7.86 g/cm3. The material is to be shaped into a solid cylindrical wire that has a total resistance of 1.5 ƒ...
November 15, 2012

Analytic Geometry
Please help. I've been trying to solve these for more than an hour now but I can't seem to get it. 1) The segment joining (-4,7), (5,-2) is divided into two segments, one of which is 5 times as long as the other. Find the point of division. 2) The segment joining (4,0...
November 14, 2012

Math
Mr. Smith is purchasing a $190000 house. The down payment is 20% of the price of the house. He is given the choice of two mortgages: (A) a 25-year mortgage at a rate of 8%. Find: (i) The monthly payment: $ (ii) The total amount of interest paid: $ (B) a 15-year mortgage at a ...
November 8, 2012

AED200
a 700- to 1,050-word paper in which you outline the steps required for a multicultural education to be effective. Describe types of activities you would incorporate into your classroom that would support a multicultural education for all groups in this class. How could each ...
November 3, 2012

Health
So, it's C right?
October 25, 2012

sociology
Smiling and making polite remarks to people we do not like is an example of: A) making another feel embarrassment. B) exercising power over another. C) idealizing a personal performance. D) using tact.
October 24, 2012

math
find the interest rate to the nearest hundredth of a percent that will produce $2500, if $2000 is left at interest compounded semiannually for 4.5 year
October 23, 2012

Chemistry
What is the molar concentration of nitrate ions in a 0.161M magnesium nitrate(aq) solution?
October 22, 2012

Business
Choose a product you wish to market. You will follow this product through all four P's of Marketing. Describe your goal. Is it to maximize quantity, market penetration, market share, gross revenue, profit, or other goal (such as social change)? In your one to two page ...
October 21, 2012

Marketing
Identify the product concepts you used in determining the packaging. How does the packaging affect the effectiveness of the packaging? Are there any physical, social, or economic restraints that could limit or enhance your packaging? Market Research Product Concepts
October 21, 2012

college physics
A student moves a box of books by attaching a rope to the box and pulling with a force of 80.0 N at angle of 45o. The box of books has a mass of 25.0 kg and the coefficient of kinetic friction between the bottom of the box and the sidewalk is 0.43. Find the acceleration of the...
October 21, 2012

Science
. Which of the following is a measure of motion, with the derived units in m/s? power force resistance speed
October 17, 2012

Geometry
To approach a runway, a plane must began a 7 degree descent starting from the height of 2 miles above the ground. To the nearest mile, how many miles from the runway is the airplane at the start of this approach?
October 16, 2012

chemistry
how much heat is released when 42.3 grams of ammonia is produced?
October 8, 2012

Chemistry
Muriatic acid is the common name of industrial-grade hydrochloric acid (HCl). One of its uses is to clean or etch concrete in preparation for sealing or painting. It is typically sold in 5.00 gallon buckets, with a concentration of 11.7 M. a.What volume of concentrated ...
October 5, 2012

Stats
On her first test in algebra, Mary earned a score of 75, and she made an 85 on her first psychology test. If the average score on the algebra test was a 68, with s=7, and the average on the psychology test was 91, with s=6, is Mary doing better in psychology or algebra. Why?
October 4, 2012

math
I am a two digit number, twice the sum of my digits is 22. The product of my digits is 24.My tens digit is greater than my ones digitwhat number am I?
October 2, 2012

math
Which property would allow you to use mental computation to simplify the problem 27 + 15 + 3 + 5? 1) commutative property of addition 2) distributive property 3) additive identity 4) additive inverse
October 1, 2012

writing
what is the prepositional phrase in the following sentence, What is the price of the blue 2006 Honda Civic in the last row of cars on the lot?
September 27, 2012

Math
find a polynomial of least degree(having real coefficients) with zeros: 5, -2, 2i
September 27, 2012

earth
what is geography?
September 20, 2012

Chemistry
Which element has no stalbe isotopes: 82Pb, 27Co, 51Sb or 90Th?
September 15, 2012

history
What caused the rapid population growth of homo sapiens
September 13, 2012

math
x^2=8x-9 solve by completing the square to obtain exact solutions
September 12, 2012

Physics
Three men are trying to move a wardrobe. One pushes northward with a force of 100N; the second pushes eastward with a force of 173N; the third pushes in a direction 60 degrees west of south with a force of 200N. What is the resultant force on the wardrobe and it's direction?
September 11, 2012

Chemistry
In solution, hypochlorite ion is known to decompose with a second-order rate law. If [ClO-]0 = 0.0570 M and k = 2.06x10-4 M-1·min-1, calculate the half-life for this reaction 2ClO-  2Cl- + O2.
September 6, 2012

Chemistry
Calculate the temperature at which k = 2.0 s-1 if k = 10.0 s-1 at 371 K. The activation energy for the reaction is 30.0 kJ mol-1.
September 6, 2012

math
if the weight of a fish varies jointly as the length and the square of the girth, and if a fish 11 inches long with a girth of 7 inches weighs 0.7lbs, find the weight of a fish 23 inches long with a girth of 18 inches.
September 5, 2012

math
if Y varies jointly as X and the square of Z, and if Y=24 when X=2 and Z=6, find Y when X=10 and Z=9
September 5, 2012

algebra
an airplane is flying at an altitude of 3200 feet. an air- traffic controller in the tower keeps constant track of the planes distance from the tower in X feet. express the horizontal distance from the tower to a point directly below the airplane,d, in terms of X.
September 5, 2012

algebra
a rancher has 310 feet of fencing with which to enclose two rectangular corrals, both of the same size. the two corrals will share one side, and a barn forms one side of both corrals. suppose the width of each corral is X feet. express the total area of the two corrals as a ...
September 5, 2012

math
a farmer has 200 yards of fencing to enclose three sides of a rectangular piece of property that lies next to a river. the river will serve as the fourth side. find the dimensions of property if the area is 3200 yards^2
September 5, 2012

Geometry
Angle ABC and ange DBE are vertical angles,the measure of angle ABC =3x+20, and the measure or angle DBE =4x-10. Write and solve an equation to find the measure of angle ABC and the measure of angle DBEin
September 2, 2012

Geometry
Angle ABC and ange DBE are vertical angles,the measure of angle ABC =3x+20, and the measure or angle DBE =4x-10. Write and solve an equation to find the measure of angle ABC and the measure of angle DBEin
September 2, 2012

college math
prove f(x)= x^15+6 is increasing on the interval: I= (-‡,‡)
September 1, 2012

math
How fast would a ball have to be thrown upward to reach a maximum height of 49 ft? [Hint: Use the discriminant of the equation 16t2 − v0t + h = 0.]
September 1, 2012

English
For this quote 'their intercourse had been one continued series of opposition. Their opinions clashed; and indeed, she had never perceived that he had cared for her opinions, as belonging to her, the individual', can someone find a technique in it? It's a good ...
August 31, 2012

HEALTH
Correct
August 22, 2012

health
Yes, B is correct
August 13, 2012

health
It is D
August 11, 2012

Science
Which of the following is a vector quantity? speed weight distance traveled mechanical energy Which of the following is a scalar quantity? work velocity acceleration displacement
August 8, 2012

stats
If 95% of all people between 21 and 50 have had at least one adult beverage in their life, find these probabilities for a sample of 10 people in that age group: a) Exactly 10 have had an adult beverage b) At least 6 have had an adult beverage c) At most 8 have had an adult ...
August 4, 2012

math
I need a lot of help on multiplication and division.Will you help me?
July 31, 2012

Science 10
The symbol of the lead(IV) ion is ?
July 26, 2012

trig HELP
A barn is 30ft. wide by 60ft long; the rafters make an angle of 40degrees with the horizontal. Find the area of each of the two gable ends and the area of the roof. Please Include Solution And If Possible An Illustration. Thank You In Advance :)
July 5, 2012

trig
Find the radius of a circle which a 59-foot chord subtends an angle of 12degrees at the center. I Just Want To See The Illustration. I Can Handle The Rest. Thank You In Advance =)
July 3, 2012

Algebra
Given f(x) = radical x-2 and g(x) = x2 – x – 6. Find (g o f)(6). A. -4 B. 2 C. 24 D. 26 E. 48
July 1, 2012

Algebra
Given f(x) = radical x-2 and g(x) = x2 – x – 6. Find (f – g)(6). A. -26 B. 26 C. -22 D. 22 E. 2
July 1, 2012

Trigonometry
A person on a ship sailing due south at the rate of 15 miles an hour observes a lighthouse due west at 3p.m. At 5p.m. the lighthouse is 52degrees west of north. How far from the lighthouse was the ship at a)3p.m.? b)5p.m.? c)4p.m.? Please Show The Solution So That I Can Study...
June 23, 2012

math foundations 20
a right hexagonal prism is enlarged by a scale factor of 5.7 a)determine the value of volume of large prism/volume of small prism. do not round answer.. how do i figure this out?
June 20, 2012

Math
The horizontal range, R, is modeled by this formula: R(x)=(v^2*sin2(x))/32 The initial velocity (v) is 90ft per second. The ball is pitched at an angle of x degrees with the horizontal. When x=26 degrees, the ball travels 200ft. At what other value of x will the ball travel ...
June 16, 2012

Geometry
Two forces are pushing on an object, one at 12 lbs of Force and one at 5.66 lbs of Force. The angle between them is 35° (each is 72.5 from horizontal, such that the forces make a v with the object in the center). 17. What is the total Force on the object? 18. What is the ...
June 5, 2012

Geometry
A plane is is flying 225 mph heading S25°W. The wind is blowing S80°E at 60 mph. 11. What is the bearing of the plane? 12. What is the smallest angle of the triangle? 13. What is the largest angle of the triangle? 14. What is the remaining angle of the triangle? 15. ...
June 5, 2012

Geometry
A plane is is flying 240 mph heading N60°E. The wind is blowing S30°E at 30 mph. 6. What is ground speed of the plane? 7. What is the smallest angle in the triangle? 8. What is the biggest angle in the triangle? 9. What is the remaining angle in the triangle? 10. What ...
June 5, 2012

Geometry
A plane is heading west at 200 mph. The wind is blowing S30°W at 25 mph. 1. What is the ground speed of the plane? 2. When you solve the triangle, what is the smallest angle? 3. What is the largest angle of the triangle? 4. What is the remaining angle? 5. What is the ...
June 5, 2012

Geometry
A plane is heading west at 200 mph. The wind is blowing S30°W at 25 mph. 1. What is the ground speed of the plane? 2. When you solve the triangle, what is the smallest angle? 3. What is the largest angle of the triangle? 4. What is the remaining angle? 5. What is the ...
June 4, 2012

chemistry
Marla drives her car to school each day. If it takes her 12 minutes to drive one way, how many hours a week does Marla spend driving? (Express the answer in decimal form.)
May 30, 2012

chemistry
What is the specific heat of an unknown substance if 2000 J of energy are required to raise the temperature of 4 grams of the substance 5 degrees Celsius?
May 30, 2012

science
- thanksss . ^_______^
May 29, 2012

science
i think its number 4 .
May 29, 2012

science
2 or 3 >????? -_-
May 29, 2012

science
the threat of global warming is mainly associated with ? 1 radioactive wastes 2 use of hydroelectric energy 3 burning of fossil fuels 4 thermal pollution of lakes and rivers
May 29, 2012

Geometry
A plane is heading west at 200 mph. The wind is blowing S30°W at 25 mph. 1. what is the ground speed of the plane? I could not figure this one out. Please help?
May 21, 2012

algebra
The equation that describes the path of a small rocket after it is shot into the air is h=1120-16t^2, where h is the height above the ground, in feet, after t seconds. How many seconds does it take for the rocket to return to the ground?
May 19, 2012

business
How does TerraCycle use its size and flexibility to gain a competitive advantage? How has the company extended its product line? How well do the new products fit the company’s strategy and image? Explain. How does TerraCycle’s culture reinforce its focus on innovation?
May 15, 2012

MATH PLS HELP
A research center claims that 50% of people believe that drivers should be allowed to use cellular phones with hands free devices while driving. In a random sample of 150 U.S. adults 58% say that drivers should be allowed to use cellular phones with hands free devices while ...
May 11, 2012

Statistics
A research center claims that 50% of people believe that drivers should be allowed to use cellular phones with hands free devices while driving. In a random sample of 150 U.S. adults 58% say that drivers should be allowed to use cellular phones with hands free devices while ...
May 11, 2012

algebra 2
Classify the conic section . Write its equation in standard form. 4x^2-y+3=0?
May 3, 2012

algebra 2 please check
Write an equation for a parabola with vertex at (-4 , 3) and focus at ( -4, -2)? I have this.... (X+4)^2=20(y-3)
May 3, 2012

algebra 2 please check
Identify the line(s) of symmetry for the conic section x-(y-1)^2=2 I have this... (Y-1)^2=(x-2) Vertex (2,1) Symmetry y=1. Is this correct?
May 3, 2012

algebra 2
Write the equation for a parabola with vertex (-2 , 3) and focus ( -2, 1).
May 3, 2012

algebra
Identify the line(s) of symmetry for the conic section x-(y-1)^2=2
May 2, 2012

UMA
Life Direction has three parts: vision, setting goals and a plan of action
April 29, 2012

physics
On July 15, 2004, NASA launched the Aura spacecraft to study the earth's climate and atmosphere. This satellite was injected into an orbit 705 {\rm km} above the earth's surface, and we shall assume a circular orbit. How many hours does it take this satellite to make ...
April 27, 2012

Math
prove the identity: sin^2 O/ 1-cos O = 1+cosO O= theta
April 27, 2012

Physics. PLEASE HELP!!
How do you calculate the y component. Answer in units of Nm. How do you calculate the z component. Answer in units of Nm.
April 25, 2012

Physics. PLEASE HELP!!
A force F=Fx ˆi + Fy ˆj + Fz ˆk acts on a particle located at X= (x, y, z). Given Fx=−88.3N, Fy=7.56N, Fz=60N, x= −3.65m, y=1.67m and z=7.03m, calculate the three components of the torque vector ~ = xˆi + y ˆj + z ˆ...
April 25, 2012

Physics. PLEASE HELP!!
Two ice skaters hold hands and rotate, making one revolution in 7.6 s. Their masses are 15 kg and 50 kg, and they are separated by 4.6 m. Find the angular momentum of the system about their center of mass. Answer in units of J · s Find the total kinetic energy of the ...
April 25, 2012

Calc 1
An 8 foot tall fence seperates Larry's yard from Evan's yard.The fence is 3 feet from Larry's house and runs parallel to the side of his house. Larry wants to paint his house and needs to position a ladder extending from Evan's yard over the fence to his house...
April 24, 2012

Calculus
A flower pot is dropped from a point 12 feet above the ground,so that it will land 4 feet from the base of a 12 foot lamppost. At what rate is the shodow of the flower pot moving along the ground when the pot is 8 feet above the ground?
April 24, 2012

Physics. PLEASE HELP!!
A force F=Fx ˆi + Fy ˆj + Fz ˆk acts on a particle located at X= (x, y, z). Given Fx=−88.3N, Fy=7.56N, Fz=60N, x= −3.65m, y=1.67m and z=7.03m, calculate the three components of the torque vector ~ = xˆi + y ˆj + z ˆ...
April 23, 2012

Physics. PLEASE HELP!!
Two ice skaters hold hands and rotate, making one revolution in 7.6 s. Their masses are 15 kg and 50 kg, and they are separated by 4.6 m. Find the angular momentum of the system about their center of mass. Answer in units of J · s Find the total kinetic energy of the ...
April 23, 2012

writing
Write a 150- to 200-word paragraph to explain how purpose, audience, tone, and content would impact the following topic: What do you hope to accomplish COM 155? Be sure to use the three components of a good paragraph covered in this week’s readings. In addition, be sure ...
April 23, 2012

Physics. PLEASE HELP!!
Consider a wheel (solid disk) of radius 0.748 m, mass 16 kg and moment of iner- tia 1/2 MR^2 . The wheel rolls without slipping in a straight line in an uphill direction 27 above the horizontal. The wheel starts at angular speed 20.5882 rad/s but the rotation slows down ...
April 20, 2012

Physics. PLEASE HELP!!
A uniform disk with a mass of 130 kg and a radius of 1.2 m rotates initially with an angular speed of 950 rev/min. A constant tangential force is applied at a radial distance of 0.5 m. How much work must this force do to stop the wheel? Answer in units of kJ
April 20, 2012

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