Friday
September 19, 2014

Posts by anon


Total # Posts: 1,350

Chemistry
nevermind, got it!
July 16, 2012

Chemistry
0.000341 g fluorescein (332.32 g/mol) is dissolved in 255 mL solution of ethanol. The density of ethanol is 0.785 g/mL. What is the concentration of the solution in molarity (M)?
July 16, 2012

Math
((25/a)- a)/ (5 + a) I know the answer comes to (5-a)/a but I can't figure out how to simplify it to this. I've gotten close but I'm not sure. Its probably easier than I'm making it out to be.
July 2, 2012

computer science
Can you help me break this into two clases, and Employee class and the default program class? I have to include a mutator and accessor method and provide properties for the instance variables. namespace commission { class Program { static void Main(string[] args) { decimal ...
July 1, 2012

science
Which of the following is TRUE? A It was recently discovered that the pituitary gland does not actually do anything. B The hypothalamus is responsible for controlling the activity of the pituitary gland. C The pituitary gland controls the hypothalamus, which in turn controls ...
June 27, 2012

psychology
Write a paper that describes the character’s personality in terms of the Big Five personality traits.
June 25, 2012

german
1. Fill in the correct comparative form: Fußball ist ______ Golf. (interessant) A mehr interessanter als B interessanter als C mehr interessant als D interessant als is it C? 3. Fill in the correct comparative form: Der Film ist ______ das Buch. (schlecht) A mehr ...
June 24, 2012

german
Fill in the correct comparative form: Surfen ist ______ Jagen. (gut) A besser als B mehr gut als C schlechter als D mehr besser als is it A?
June 24, 2012

Statistics
Not a t-Test. Is a Linear Regression to test for a relationship between PC ownership and Computer Anxiety
June 24, 2012

accounting please help!
I have most of them done but would like to have these ones double checked... Please Help!!! 2. The balance sheet format that lists assets above liabilities is the _______ form. A. alphabetical B. liquidity C. account D. report I said B 13. Nick Company reports the following ...
June 24, 2012

Physics
A 5000 kg cart carrying a vertical rocket launcher moves to the right at a constant speed of 27.0 m/s along a horizontal track. It launches a 54.8 kg- rocket vertically upward with an initial speed of 33.1 m/s relative to the cart. A) where will the rocket land, relatively to ...
June 15, 2012

Biology
The release of eggs and sperm near each other into the water occurs during A spawning. B development. C growth. D all of the above. Is it A?
June 15, 2012

physics
A blue minivan weighing 20,000 Newtons and traveling east at 100 km/hr on a familiar turnpike approaches the toll booth. What is the kinetic energy (in joules) of the minivan just before the brakes are applied? Assume g = 10 m/s/s.
June 4, 2012

Chemistry
what are the half reactions for a) Cr(NO3)2 b) Pb(NO3)2 I know that Cr and Pb are: Cr^2+ +2e- -> Cr Pb^2+ +2e- -> Pb I just don't know how to do the half reaction for (NO3)2
June 1, 2012

math
93.75% are yellow
May 25, 2012

Business HELP!!!
This is a 100 question hw sheet and I have answered all but i am unsure about a few please help!!! 8. Which of the following statements about when the Fed increases the reserve requirement is correct? A. Interest rates go down. B. Banks have more money to lend. C. Inflation ...
May 25, 2012

geometry
712ft2(Squared)
May 24, 2012

Business
This is a 100 question hw sheet and I have answered all but i am unsure about a few please help!!! 8. Which of the following statements about when the Fed increases the reserve requirement is correct? A. Interest rates go down. B. Banks have more money to lend. C. Inflation ...
May 24, 2012

Business Accounting
This is a 100 question hw sheet and I have answered all but i am unsure about a few please help!!! 8. Which of the following statements about when the Fed increases the reserve requirement is correct? A. Interest rates go down. B. Banks have more money to lend. C. Inflation ...
May 24, 2012

Business
The contrarian approach to investing is best illustrated by A. staying out of the market no matter what experts are saying. B. always buying when others are selling. C. investing in mutual funds, contradicting the idea that investing in individual stocks is better. D. ...
May 24, 2012

Business Accounting
Which of the following statements about the money invested in a traditional IRA account is correct? A. It isn’t taxed until it’s withdrawn. B. It’s subject to double taxation. C. It’s taxed as you make deposits. D. It isn’t taxed.
May 24, 2012

Literature
Who did Hans Christian Andersen dedicated The Little Mermaid to?
May 11, 2012

math
this question is vague, which system are you using? The numbers do vary. Also do want to convert a ton to Kg?
May 9, 2012

Math
because the [ (79degrees/360 degrees) x pi x 6^2 ] would be the measure of that section of the circle. the area of the whole circle would be pi x r^2 but since you're only solving for that section it would be 79/360 times that whole area of the circle to solve for that ...
May 9, 2012

Math
were you allowed to use a graphing calculator? because if you were, you would be able to find the HA by looking at the graph
May 9, 2012

geometry
Find the areas of both the wall and the door and subtract the two 8 x 20 = 160 to find the width of the wall: 4+ 8+ 8= 20 Area of the wall: 25 x 20 = 500 Area to be painted: 500-160 = 340 ft^2
May 9, 2012

MATH
(7/8)-(3/4)= x ----equation (3/4) = (6/8) (7/8)- (6/8) = (1/8)
May 9, 2012

Chemistry
thank you!
May 9, 2012

Chemistry
Consider an amphoteric hydroxide, M(OH)2(s), where M is a generic metal. M(OH)2 (s) <--> M^2+ (aq) + 2OH- (aq) Ksp=4e-16 M(OH)2 (s) + 2OH- (aq) <--> M(OH)4 ^2- (aq) Kf=0.06 Estimate the solubility of M(OH)2 in a solution buffered at pH= 7.0, 10.0, and 14.0 I'm ...
May 9, 2012

Chemistry help!!!
The class will react 50.00 mL samples of .200 mol/L potassium phosphate with an excess of 0.120 mol/L lead II nitrate solution. what is the minimum volume of lead II nitrate solution required? What volume of lead II nitrate solution should the instructor tell the students to ...
April 11, 2012

chemistry
Calculate the pH of the resulting solution if 30.0 mL of 0.300 M HCl(aq) is added to (a) 35.0 mL of 0.300 M NaOH(aq). (b) 40.0 mL of 0.350 M NaOH(aq).
April 10, 2012

Chemistry
Which of the following solution should be mixed with 50.0 mL of 0.050 M HF solution to make an effective buffer? A) 50.0 mL of 0.10 M NaOH B) 25.0 mL of 0.10 M NaOH C) 50.0 mL of 0.050 M NaOH D) 25.0 mL of 0.050 M NaOH
April 1, 2012

calculus
if the solutions of f(x)=0 are -1 and 2, then the solutions of f(x/2) = 0 are
March 31, 2012

algebra
set denominator equal to 0 and solve for x which would make the equation undefined v^2-4v-32=0 (v-8)(v+4)=0 v=8, v=-4 x is not equal to 8 or -4
March 29, 2012

Intermediate Algebra
=sqrt(24)x i = 2sqrt(6)i
March 29, 2012

PreAlgebra
$20
March 29, 2012

Intermediate Algebra
[(7a-b)(7a+b)]/(7a-b) =7a+b
March 29, 2012

math
break them down into shapes that you know how to work with like squares and rectangles.
March 29, 2012

Science
It should be 0.25. I don't really know how to get that from the equation (Amplitude=distance/frequency), but since the problem said that "the crests of the waves are about .5 meters above the troughs." I divided that by two.
March 22, 2012

Genetics
A certain form of albinism in humans is recessive and autosomal. Assume that 1% of the individuals in a given population are albino. Assuming that the population is in Hardy-Weinberg equilibrium, what percentage of the individuals in this population is expected to be ...
March 18, 2012

Genetics
The difference between fitness of a given genotype and another genotype considered optimal is called the selection coefficient (s). What is the selection coefficient for a genotype (aa) that produces an average of 99 offspring when Aa individuals produce an average of 100 ...
March 18, 2012

Chemistry
But how did you get the (Cl^-)?
March 16, 2012

Genetics
A certain form of albinism in humans is recessive and autosomal. Assume that 1% of the individuals in a given population are albino. Assuming that the population is in Hardy-Weinberg equilibrium, what percentage of the individuals in this population is expected to be ...
March 15, 2012

Genetics
The difference between fitness of a given genotype and another genotype considered optimal is called the selection coefficient (s). What is the selection coefficient for a genotype (aa) that produces an average of 99 offspring when Aa individuals produce an average of 100 ...
March 15, 2012

Geometry
The area of a square garden is 242m squared. How long is the diagonal?
March 14, 2012

reed
can you give me a filipino global leaderin the medical field who exemplified his or her faith by creating a difference through an act of social transformation of persons in the family ,in the community and in the global world.?
March 14, 2012

reed
group of filipinos in the medical field who exemplified his or her faith by creating a difference through an act of social transformation of persons in the family ,in the community and in the global world.
March 14, 2012

pharcalc
Can you give me one problem about pediatric dosing with many questions.
March 13, 2012

calc2
Let R denote the region in the plane consisting of all points (x,y) where x ≥ 1 and 0 ≤ y ≤ 2/x. Let S denote the solid formed by rotating R about the x-axis. Observe that S is an unbounded region; that is, it extends indefinitely in the direction of the ...
March 8, 2012

Calculus
The graph of the curve y2=10 x+10 is a parabola, symmetric with respect to the x-axis. Find the area of the surface generated by rotating about the x-axis the part of this curve corresponding to 0 ≤ x ≤ 20.
March 8, 2012

Math
Because diameter is twice the radius, the radius must be 1/2 of 8 ft. So r=4ft. The circumference is equal to 2*pi*radius. Since pi is =3.14 Thus by comparing the two equations D=2r C=2rpi the only difference is pi so the answer would be F if you assume 3.14 is approximately 3
March 8, 2012

Science
Roots have a tendency to grow downwards, while shoots grow upwards. Gravitropism is a turning or growth movement by a plant or fungus in response to gravity. Charles Darwin was one of the first to scientifically document that roots show positive gravitropism and stems show ...
March 8, 2012

ymous
You're standing 14 feet from the edge of a cylindrical water tank and is 26 feet from the point of tangency. the tank is 10 feet tall. what is the volume in cubic feet
March 8, 2012

business
•400, who posted on Sunday, April 15, 2012 at 1:51pm was correct!
March 7, 2012

Physics 12
A block mass m1 lying on a frictionless inclined plane is connected to a mass m2 by a massless cord passing over a pulley. 1.) determine a formula for the acceleration of the system in terms of m1, m2, Ө, and g. 2.)what conditions apply to mass m1 and m2 for the ...
February 26, 2012

Math
how do you factor: 3x^2 + 11x - 4
February 25, 2012

life orientation
Could you be more specific with the question? What are you referring to?
February 23, 2012

any tutor
Are there any tutors on right now or people who are good with chemisty?
February 23, 2012

CHEMISTRY
Give names of the following covalent (nonmetallic) compounds: S4N2 ClF3 I2O5 SeF6 PBr5 H2O C2I6 C5F9H2Cl Si2F6 Si9F10Br7H
February 23, 2012

social studies
Pharaohs from Kush ruled Egypt for almost a century. The rulers from the south encouraged an Egyptian-style culture. They built temples to honor Nubian and Egyptian gods. They dotted the desert with hundreds of tombs. Like earlier pharaohs, they encouraged trade between Africa...
February 23, 2012

7th grade science
You're welcome. (:
February 23, 2012

math
determine the linear velocity of a point rotating at 15 revolutions per minute at a distance of 3.04 meters from the center of a rotating object
February 19, 2012

physics
The racing car has a mass of 1250kg. When the brake pedal is pushed down a constant braking force of 10,000 N is exerted on the car. Calculate the acceleration of the car. If you could also tell me how you came to the answer, it would help me in the future. Thank you.
February 16, 2012

Genetics
In general, what two methods are used to grow bacteria in the laboratory?
February 8, 2012

Genetics
Name the term used to describe the phenomenon in which a bacteriophage genome incorporates its genome into the chromosome of the host.
February 8, 2012

physics
application of and the concept of heat and temperature in technology.please can u give me the link.thanks
February 8, 2012

Russian History xD
Thank you! :D
February 1, 2012

Russian History xD
I'm doing a project on Russian art, and I'm kinda confused. These are some things I got down. They're just jumbled thoughts. But did communism ending cause the renaissance? Since Russia was a communist country, art used to be used to make the government look good. ...
February 1, 2012

Russian History
Did Peter the Great end communism?
February 1, 2012

Physics
A speeder traveling at a constant speed of 102 km/h races past a billboard. A patrol car pursues from rest with constant acceleration of (9 km/h)/s until it reaches its maximum speed of 146 km/h, which it maintains until it catches up with the speeder. How long does it take ...
January 28, 2012

Physics
A copper (Cu) weight is placed on top of a 0.24 kg block of wood (density = 0.60*10^3 kg/m3) floating in water. What is the mass of the copper if the top of the wood block is exactly at the water's surface?
January 24, 2012

Precalculus
The figure below shows a conchoid of Nicomedes. The top part is formed by a ray from the origin that rotates through an angle t° with the x-axis. The ray intersects the fixed line y = 2 at point A. From A you measure out 7 more units to point P on the graph of the conchoid...
January 20, 2012

Precalculus
Thank you so much!
January 20, 2012

Precalculus
Given r = 10 cos θ If you sketched an angle of θ = 150 degrees, what quadrant would it be located in? It's either the first or second... I think second? Multiply both sides of r = 10 cos θ by r. Transform the resulting equation into Cartesian coordinates.
January 20, 2012

Precalculus
Ohmygoodness. Hhaha. Thanks!
January 20, 2012

Precalculus
This is probably silly, but where is the 2 in the beginning of all of those from?
January 20, 2012

Precalculus
Write the three cube roots of 8 cis (-30°).
January 20, 2012

Precalculus
So the answer for "Give the equation of the line in rectangular coordinates." is sqrt(x^2+y^2) = 4 [sqrt(x^2+y^2) ]/y? Or is it the y=4? Again, that's probably a silly question..
January 20, 2012

Precalculus
The polar equation of a graph is given below: r=4/sin(theta) Give the equation of the line in rectangular coordinates. If you rotate this graph 40 degrees counterclockwise about the pole, would you add or subtract 40 degrees to θ? Subtract?
January 20, 2012

Precalc
*(x + 5)(x^2 - 6x + 13)
January 20, 2012

Precalc
Given g(x) = (x + 5)(x2 - 6x + 13), find the one real zero of g(x): I think it's -5 Find the two complex zeros of g(x):
January 20, 2012

Precalculus
The figure shows part of a curve traced by a point on the circumference of a circle of radius 4 that rotates, without slipping, around a fixed circle of radius 2. The rotating circle starts with angle t = 0 radians and the point P (x, y) at (10, 0). In this problem you will ...
January 20, 2012

Precalculus
This figure shows concentric circles of radii 3 and 5, respectively, centered at the origin of an xy-coordinate system. A ray from the center at an angle of t degrees to the x-axis cuts the two circles at points A and B. From A, a vertical line is drawn; and from B, a ...
January 20, 2012

Precalculus
QUESTION 1 Joe intercepts a pass 8 yards into the end zone, 19 yards from the right side of the field as he faces the opposite end of the field (see figure). He starts running diagonally, moving at a rate of 4 yd/s down the field and 2 yd/s across the field. Let x and y be his...
January 20, 2012

Precalculus
I don't even how to go about this.... Mars is in an elliptical orbit with the Sun at one focus, as shown in the figure. At its aphelion, Mars is 156 million miles from the Sun. At its perihelion, Mars in only 128 million miles from the Sun. How long is the major axis of ...
January 20, 2012

Precalculus
A geometric series has t1 = 100 and t2 = 90. Find the number to which Sn converges as n gets very large.
January 20, 2012

Precalculus
Thanks!
January 20, 2012

Precalculus
A geometric series has t1 = 3 and r = 2. If tn = 96. What does n equal in this problem? What is the special name given to the terms between 3 and 96 in this problem?
January 20, 2012

Precalc
(10 cis 200) (2 cis 50) = ? Is it just 20cis(10000)?
January 20, 2012

math problem
No. 6(-4)-5(7)=-35, not -2.
January 20, 2012

Language
The other is bad hair (hare) day. Too funny.
January 20, 2012

Language
The main (mane) part. Clever.
January 20, 2012

Language
Toed (Toad) is the first.
January 20, 2012

science
Arranging species into classes.
January 19, 2012

counciling
Maybe about what you learned from one of the sadder times in your life?
January 19, 2012

counciling
Neither, just honest.
January 19, 2012

physics
While John is traveling along an interstate highway, he notices a 166 mi marker as he passes through town. Later John passes a 120 mi marker. What is John’s current position?
January 16, 2012

physics
A jet travels at 434 m/s. How long does it take to travel 294 m? Answer in units of s
January 16, 2012

physics
While John is traveling along an interstate highway, he notices a 166 mi marker as he passes through town. Later John passes a 120 mi marker. What is the distance between town and John’s current location? Answer in units of mi
January 16, 2012

physics
A sound wave, traveling at 348m/s, is emitted by the foghorn of a tugboat. An echo is heard 1.99 s later. How far away is the reflecting object? Answer in units of m
January 16, 2012

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