Thursday
March 5, 2015

Posts by Stephanie


Total # Posts: 1,051

Survey of the sciences
When the hydronium ion comcentration of a solution equals 1 mole per liter, what is the pH of the solution? Is the solution acidic or basic?
February 9, 2011

Survey of the sciences
Show that one mole of sugar equals 342 grams.
February 9, 2011

Physics- Vectors
A bartender slides a beer mug at 1.4 m/s towards a customer at the end of a frictionless bar that is 1.8 m tall. The customer makes a grab for the mug and misses, and the mug sails off the end of the bar. (a) How far away from the end of the bar does the mug hit the floor? (b...
February 5, 2011

MATH
You have $110 IN YOUR lunch account and plan to spend $2.75 each school day. a) Write and graph a linear equation that represents the balance in your lunch account (i just need help making an equation for this problem) b) How many school days will it take to spend all of the ...
February 5, 2011

economics
the smith company made and sold 10,000 metal tables last year. when output was between 5,000 and 10,000 tables, its average variable cost was $24. in this output range, each table contributed 60 percent of its revenue to fixed costs and profit. what was the price per table?
February 5, 2011

physics
Carrying out the following mathematical manipulations: (5.78 +/- 0.04)^2 How do you set this problem up?
February 4, 2011

Survey of the Sciences
Thank you Damon! now, here's the last part of that along with the first again.... Calculate the height from which a block of ice at zero degrees celcius nust be dropped for it to completely melt upon impact. Assume that there is no air resistance and that all the energy ...
February 2, 2011

Survey of the Sciences
Calculate the height from which a block of ice at zero degrees celcius nust be dropped for it to completely melt upon impact. Assume that there is no air resistance and that all the energy goes into melting the ice.
February 2, 2011

Criminal Justice
I need to write a paper on the differences of police officers with a GEd and those with further education. Also do either have more civil rights complaints
January 31, 2011

Physics
Both block A and B mass 3kg and are initially 2m above the ground. They slide down a smooth ramp and then across a rough surface with a speed of 4m/s. How much energy did the block lose due to the friction along the rough surface? AND is transformed into what form of energy?
January 30, 2011

finance
Pick a company that pays dividends, then calculate the expected growth rate of your company using the CAPM. Once this task is complete, calculate the expected growth rate using the Constant Growth (or Gordon Growth) Model.
January 23, 2011

Physics
The radius of a circle is measured to be 12.8 ± 0.2 cm. I need to find the Area and the Circumference of the circle? But how to I account for the uncertainties in each value?
January 21, 2011

Calc
A mass is oscillating on the end of a spring. The distance, y, of the mass from its equilibrium point is given by the formula 2zcos(14πwt) where y is in centimeters, t is time in seconds, w and t and are positive constants. What is the furthest distance (cm) of the mass ...
January 17, 2011

Calc
A mass is oscillating on the end of a spring. The distance, y, of the mass from its equilibrium point is given by the formula 2zcos(14πwt) where y is in centimeters, t is time in seconds, w and t and are positive constants. What is the furthest distance (cm) of the mass ...
January 17, 2011

Calc
Consider a circle of radius 2 and a point P rotating around it. The angle θ, in radians, is given as a function of time t. (a) What is the value of θ when t=1.5? (b) Find the coordinates of P when t=1.5
January 15, 2011

Chemistry
370 mL
January 9, 2011

7th grade social studies
what was the importnat beaureacrats of the tang and song dynasties?
January 3, 2011

statistics
In baseball, is there a linear correlation between batting average and home run percentage? Let x represent the batting average of a professional baseball player. Let y represent the home run percentage (number of home runs per 100 times at bat). Suppose a random sample of ...
December 19, 2010

College Math
It is homework, I am doing the problems right now in Week 5 Assignment 2 of College Math at the AIPOD.
December 12, 2010

Chemistry
If 30.0 g of H2 were used, how many grams of NH3 would be made?
December 11, 2010

Algebra
correct!
December 11, 2010

Chemistry. Help please
Calculate the pH of a buffer solution made by mixing 174 mL of a 1.68M trimethylamine (CH3)3N solution with 250 mL of a 1.08M trimethylammonia chloride, (CH3)3NHCl solution.
December 9, 2010

math
break apart these numbers 40x16
December 9, 2010

Chemistry. please help
A 0.12 g sample of unknown was placed in a flask and dissolved in 125 mL of deionized water. A solution of HCl (0.10 M) was used to titrate the sample, and 18 mL was required to reach the endpoint. What is the formula weight of the unknown?
December 8, 2010

chemistry
Write the 12 mole ratios that can be derived from the equation for the combustion of isopropyl alcohol?
December 8, 2010

geomety
solve for x 5 + x 10 ----- = ---- x 8
December 8, 2010

geometyr
determine the perimeter of triangle KLM, if triangle KLM-triangle FGH, FG=30, GH=38, FH=38 and KL=24
December 8, 2010

Europe
What role did the geography of europe play in the development of and ways of life in these towns?
December 6, 2010

Chem
When dissolved in an aqueous solution, which of the following salts will yield a neutral solution? Choose one answer. a. KCN b. NaHSO4 c. Na3PO4 d. AlBr3 e. MgBr2
December 3, 2010

Chemistry
One of the most obvious ways to tell that a chemical reaction has occurred, as we all know, is that the color of 'stuff' changes. Ligand exchange reactions are one class of reactions where this is very evident, as exemplified by the color change of a green Ni(H2O)62+ ...
December 1, 2010

Chemistry
I posted a question at 5:43pm yesterday...can anyone please help with at least some of it? Thank you so much.
November 26, 2010

Chemistry
I really appreciate your help.
November 25, 2010

Chemistry
I have spent all afternoon (on Thanksgiving, no less) trying to figure out these post-lab questions. We had to produce a precipitate of a reaction of: 1) 1 ml 1M Na2SO4 + 9mL 1M CaCl2 Our result was .569g 2) 5 ml 1M Na2SO4 + 5 ml 1M CaCl2 Our result was .01g 3) 9 ml 1M Na2SO4...
November 25, 2010

Physics
When tossed upward and hit horizontally by a batter, a 0.23 kg softball receives an impulse of 2.0 N·s. With what horizontal speed does the ball move away from the bat?
November 24, 2010

physics
A horizontal force of 25 newtons pushes a box a distance of 30 meters across the floor. How much work is done by the force?
November 23, 2010

Astronomy
Which one supports the solar nebula theory of the origin of the solar system? a.Disks are rare around young stars. b.Disks are common around young stars. c.The sun is the least massive object in the solar system. d.Planets are round.
November 23, 2010

science
thank you! I just thought that just because jupiter is a gaseous planet that it would have a lesser mass.
November 23, 2010

math
Sevnety-eight players entered a single elimination tennis tournament.How many matches were played to determine the overall champ? please help me...and if u get the answer can you explain how you got it with a rule or a pattern
November 18, 2010

language
replacing with possessove nouns ex the sister Miguel woke up him. Miguel's sister woke up him
November 16, 2010

11th grade
At a glassware factory, molten cobalt glass is poured into molds to make paperweights. Each mold is a rectanglar prism whose height is 3 inches greater than the length of each side of the square base. A machine pours 20 cubic inches of liquid glass into each mold. What are the...
November 15, 2010

geometyr
given triangle QRS=triangle TUV, QR=2x=7, RS=13,and QS=3x+2 and TV=7x-6 find the value of x
November 15, 2010

english
thanks guys, but arethere any objects you think i can bring to school?
November 13, 2010

english
are there any objects that represent perseverence? and why? i need this for an english projcet
November 13, 2010

college microeconomics
Suppose that two players are playing the following game. Player 1 can choose either top or bottom, and Player 2 can choose either left of right. The payoffs are given in the following table Player 2 Left Right top 9,4 2,3 Player 1 Bottom 1,0 3,1 where the number on the left is...
November 7, 2010

Algebra
do the FOIL method f for first o for outer i for inner l for last (8y+5z)(8y-5z) 64y^2 + 40yz - 40yz + -25z^2 64y^2 - 25z^2
November 4, 2010

math
the answer is c
November 4, 2010

Math
-2 3/4 - 6 5/9=
November 4, 2010

Math
2 2/3 + -1 1/2=
November 4, 2010

help!!! physics
you want to nail a 1.6 kg board onto the wall of a barn. to position the board before nailing, you push it against the wall with a horizontal force to keep it from sliding to the ground. (a) if the coefficient of static friction between the board and wall is .79, what is teh ...
November 3, 2010

pysics
a .15 kg ball is placed in a shallow wedge with an opening angle of 120 degrees. for each contatct point between the wedge and the ball, determine the force exerted on the ball. assume the system is frictionless.
November 3, 2010

physics
Let mass of hanging block be M Since in equilibrium the hanging mass MG = Tension in the wire Similarly along the incline Tension in the wire = 6.7 * g * sin 42 (Component of force along the incline) So equation both the equations: M*g = 6.7 * g * sin(42) M = 6.7*sin(42) So M...
November 3, 2010

physics
two blocks are connected by a string. the smooth incline surface makes an angle of 42 degrees with the horizontal, andthe block on the incline has a mass of 6.7 kg. find the mass of the hanging block that will cause the system to be in equilibrium. (the pully is assumed to be ...
November 3, 2010

algebra
when you solve a system of equations by the substitution method, how do you determine whether the system of equations is dependent?
October 28, 2010

calculus
Well, we know x=3 and y=8 and dx/dt=4. We need to find z (the distance from the particle to the origin) dy/dt, and finally our answer dz/dt. First solve for dy/dt y=2(3x+7)^(1/2) dy/dt=[2(1/2)(3x+7)^(-1/2)](3dx/dt) dy/dt=[(3x+7)^(-1/2)]3dx/dt dy/dt=[(3(3)+7)^(-1/2)](3(4)) dy/...
October 26, 2010

chemistry
strontium nitrate reacts with potassium iodate. What is its molecular,ionic and net ionic equations?
October 23, 2010

statistics
1.test wheter these samples represent populations that are different from the general population- sample of 10 with a mean of 44 and sample of 1 with a mean of 48. 2. The general population of individuals has a mean of 40 , a deviation of 6, and follows a normal curve. for ...
October 22, 2010

Chemistry
The following is given: 20 ml of HCl (2.0 M) added with 5 ml of Na2S2O3 (0.3 M) with 5 ml of H2O S2O3^-2(aq) + 2H^+1 (aq) --> S (s) + SO2 (g) + H2O (l) Calculate the following: a) Reaction rate when 30 mg of sulphur is formed (in 30 ml of solution) after 55 seconds. b) Rate...
October 20, 2010

algebra
the ratio of two integers is 9:7. their sum is 1024. find the two integers.
October 19, 2010

English
Thanks again. Believe I have hang of it now.
October 18, 2010

English
My last two that are confusing me. Identify verb and tell if transitive or intransitive. 1) Most people think of bamboo as a tree or a bush. 2) Bamboo belongs to the grass family. 1) think=intransitive 2) belongs=intransitive
October 18, 2010

English
Thank you very much.
October 18, 2010

English
Please check and see if I answered correctly. Have to identify the verb and tell if intransitive or transitive 1. In China people eat the tender shoots as a vegetable. 2. The Japanese also make flutes from the stems. 3. In some countries, bamboo cages hold animals. 1.eat=...
October 18, 2010

PHYSICS
Actually there are 3600seconds per hour. So the answer of 29.06m/s is correct.
October 17, 2010

PHYSICS
A 287-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.810, and the log has an acceleration of 0....
September 30, 2010

PHYSICS
Pluto has a mass of 1.30 1022 kg and a radius of 1.18 106 m (a) What is the acceleration due to gravity on Pluto? (b) How much would a 4.7-kg person weigh on this planet?
September 30, 2010

3rd grade
100
September 23, 2010

english
how can i use appositives in a conservation with a friend
September 20, 2010

physics
A volleyball is deflected vertically by a player in a game housed in a high school gymnasium where the ceiling clearance is 18m. If the initial velocity of the ball is 21.5 m/s, will the ball contact the ceiling?
September 19, 2010

physics
A ball is kicked at a 37 degree angle, with a velocity of 14.6 m/s. How high and far does the ball go?
September 19, 2010

6th grade science
this website barley actually does any homework help
September 17, 2010

English
i need help What does It mean to be an american citizen ?
September 15, 2010

college economics
Assume Nebraska and Virginia each have 100 acres of farmland. The following table gives hypothetical figures for yield per acre in the two states: Nebraska Virginia Wheat 15 5 Cotton 7 4 Who has the comparative advantage in the production of wheat? *For this answer, I think it...
September 13, 2010

3 English H
How can I illustrate the word "aberration"?
August 31, 2010

algebra 1 honors
it says simplify each expression. justify each step. 1. (2 + 7m) + 5 2. 9 x (r x 21)
August 25, 2010

science
Identify the fruit or vegetable you selected and relate the second law of thermodynamics to the changes in energy observed in Appendix C. How did the amount of energy gained compare to the amount of energy lost as heat at the second through fourth trophic levels? o Answer the...
August 24, 2010

ALGEBRA
putting function machines in order. completely don't understand.
August 18, 2010

Math
Explain why the statement is incorrect: The probability that a bus will arrive late at the Civic Center is 0.35 and the probability that it will be on time ore early is 0.60
August 15, 2010

english
I am having a hard time coming up with several sentences about an interaction with a friend or family member about personal finance or credit cards that includes five different pronouns, adverbs, and adjectives. Can anyone help me?
August 1, 2010

Math-please check my answer
That is correct! Great job!
August 1, 2010

geometry
If VZ = 21, ZX = 24, and Z is the midpoint of WY, what is the length of WZ rounded to the nearest tenth?
July 29, 2010

economics
What is meant by the term utility and how does it relate to purposeful behavior
July 27, 2010

geometry
Find the volume of a cylinder with radius 6 cm and height 10 cm. Use 3.14 for ð. Round your answer to the nearest tenth.
July 25, 2010

health
does champva provide adequate level of health insurance for participants
July 21, 2010

British Literature
14. Realism was largely a reaction against >> D) Romanticism 15. Realism is associated with >> D) all of the above Those are the ones I can do easily now. I've never read the stories in here, though I recently finished a big-ass British literature course :O
July 21, 2010

Physics
A .6-kg mass at the end of a spring vibrates 3.0 times per second with an amplitude of .13 m. Determine a.) the velocity when it passes the equilibrium point, b.) the velocity when it is .1 m from equilibrium. c.) the total energy of the system, and d.) the equation describing...
July 17, 2010

Math
1. Identify the degree, leading term and leading coefficient of each polynomial function. A. f(x)= x(x+1)(3x+1)(x-2) B. f(x)= -16+3x^4 - 9x^2 - x^6 + 4x^8 2. Describe the end behavior of a ninth-degree polynomial function with a negative leading coefficient.
July 15, 2010

math
6x-4y=8 have to find the slope for that equation, and the y-intercept, so I'll start with x=0
July 12, 2010

chemistry
when 25.0 g of Zn reacts how many L of H2 gas are formed at STP
July 5, 2010

chemistry
a sample of H2O with a mass of 46.0 grams has a temperature of -58.0 degress celcius. how many joules of energy are necessary to melt 46.0 grams of ice?
June 28, 2010

chemistry
what is the solubility of Ag in water at 0 degrees celcius? what is it for calcium carbonate? and yellow brass?
June 21, 2010

Chemistry
A0 2.95 cm3
June 2, 2010

US History
Where were some of the great achievements created by the enormous growth of American cities in the last decades of the 19th century?
May 31, 2010

Billing and Coding
How do you know what the main term is in a multiple-word diagnosis? Example: Acute Fulminating Multiple Sclerosis
May 27, 2010

English /Lit
Using literary elements,compare and contrast Abigail Adams letter to her daughter with Jean de Crevecoeur's essay from letter to an American farmer. Now i read both essays, and im very fond of both of them . but i have trouble on what to compare and contrast on them, and ...
May 24, 2010

5th grade
Carol uses the same ratio table to solve the problems below. Do you agree or disagree? 8 cows/2 pigs = c cows/10 pigs 2 pigs/8 cows = 10 pigs/c cows
May 11, 2010

COMM/215 Final Grammar exam, please help
Please help me out with my final grammar exam, COMM/215 Thank you
May 8, 2010

grammar
Can you plese tell if the follong questions are true or false (fragment) 1. That movie, one of my favorites, true or false? 2.-The local baseball team, needing a good picher true or false? 4.- Using a flashlight, he looked under the bed for his shoes true or false, thank you
May 8, 2010

college chemistry
A) In some regions of the southwest United States, the water is very hard. For example, in Las Cruces, New Mexico, the tap water contains about 560 ug of dissolved solids per milliliter. Reverse osmosis units are marketed in this area of soften water. A typical unit exerts a ...
April 28, 2010

college chemistry
A solid consists of mixture of NaNO3 and Mg(NO3)2. When 6.50 g of this solid is dissolved in 50.0 g of water, the freezing point is lowered by 5.40⁰C. What is the composition of the solid (in mass percent)? Assume ideal behavior but watch out for the van’t Hoff factor.
April 28, 2010

college chemistry
Pentane, C5H12, and hexane, C6H14, combine to form an ideal solution. At 25⁰C the vapor pressure of pentane is 511 torr and that of hexane is 150 torr. In the vapor over a pentane-hexane solution at 25⁰C, the mole fraction of pentane is 0.15. What is the mole ...
April 28, 2010

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