Friday
October 24, 2014

Posts by jenny


Total # Posts: 1,230

Chemistry
A water sample saturated in CaF2 has Ca2+ of 115 ppm (115g Ca2+ per 10^6g water sample). What is the F- ion content of the water in ppm?
March 5, 2011

History
When the British arrived to India
March 4, 2011

History
How did India experience that arrival of the west, in light of the past? How did India experience the western domination? How did India emerged out of western domination in the 20th century as an independent nation?
March 4, 2011

chemistry
What do you expect when you mix 1M Na2SO4 with 1M CaCl2?
March 1, 2011

Chemistry
Thank you so much!
February 28, 2011

Chemistry
And it's 0.20M
February 28, 2011

Chemistry
Adding 20mL sodium acetate, sorry.
February 28, 2011

Chemistry
How do I find the volume of 6M stock solution of acetic acid needed to make a 250 mL buffer at a pH 4.7? pka is 4.74
February 28, 2011

Business Communications
A. Good communicators advance more quickly in the company. B. It is true that good communicators advance more rapidly in the company. C. There is evidence that has shown that good communicators advance more rapidly in the company. D. It is the case that good communicators ...
February 26, 2011

Business Communications
A job application letter is effective in convincing the reader that an applicant is knowledgeable of the company by?
February 26, 2011

Business Communitions
"Investors And their wives" is considered sexist because?
February 26, 2011

geometry
a cube is placed inside a right circular cylinder. How may cubic feet of water will file the cylinder that has the cube in it? The sides of the cube are 24. The radius of the cylinder in 12 square root of 2 thanks you
February 23, 2011

science/maps
I don't understand
February 20, 2011

science/maps
Can you explain it
February 20, 2011

Chemistry-Practical Applications
What are some practical applications of London dispersion forces? And the rule like dissolves like besides making antichap lipstick? Thank you!
February 18, 2011

biochem
If I am given a solid chemical form of both the acid and the base, how do I determine how many grams of each I need to make 1L of a 25mM Tris-HCl buffer with acid concentration of 18.94mM, and base concentration of 6.06mM?
February 17, 2011

English
hey Ms. Sue can you come back and help me? -thanks
February 13, 2011

English
cars Mcdonalds
February 13, 2011

English
I need to think of a question to write about for my inquiry paper and I need a question so I can answer but I can't think of it. It has to be about advertising and need to connect with communication.
February 13, 2011

Chemistry
If a reaction quotient is undefined, and the Kc = 1. A+B=>C A=0m, B=0m, C=10m What happens to the concentrations of A,B,C? do they decrease or increase or no change to reach equil?
February 9, 2011

Chemistry
well if it is undefined, which way would the equilibrium shift?
February 9, 2011

Chemistry
Kc=1. The initial concentrations are A = 0M, B = 0M, C=10M. A+B --> C calculate the reaction quotient. (c)/(a)(b) = 10/0 .. is the answer zero?
February 9, 2011

Math
-36x^2-300=0 solve for x
February 6, 2011

Physics
If you are pushing a box with 100 N of force and the maximum friction is 150 N. What is the net force of the box?
February 2, 2011

earth
classify each of the folowing layers as liquid,rigid,or solid but able to flow slowly:lithosphere,asthenosphere,lower mantle,outer core,inner core.
February 2, 2011

Chemistry
In blueprinting, there are to reactions that occur. The first one: Fe^3+ + C204^-2 (oxalate) -> Fe^2+ + CO3 must occur with light. Can the second reaction described by the chemical equation below occur without light? Fe^2+ + Fe (CN)6^-2 -> Fe3[Fe(CN)6]2 Please explain ...
January 31, 2011

Chemistry - Oxidation, Reduction Reactions
Fe^3+ + C204^-2 (oxalate) -> Fe^2+ + CO3 Which is the oxidizing agent and the reducing agent in the chemical equation above?
January 31, 2011

comm
User: · Read the four sample paragraphs in Appendix F. · Identify whether each paragraph is a summary, analysis, synthesis, or evaluation. · Write a paragraph explaining the key differences between the four types of writing. 1. Alice Axia’s article ...
January 30, 2011

College algebra
x+5 + x-3 = 5 --- --- --- 7 4 14
January 30, 2011

Reference Letter
Hey Im trying to write a Reference letter, and Im kind of having trouble starting off. I have to imagine myself as an adult who knows me as a student.Then I have to create a made up letter of reference for myself based on what I hope someone would honestly be able to write ...
January 27, 2011

Math
A jet leaves an airport traveling at a steady rate of 600 km/h. Another jet leaves the same airport 3/4 hr later taveling at 800 km/$ in the same direction. How long will it take the second jet to overtake the first.
January 24, 2011

physics
A revolutionary new diet advertises that one can lose weight simply by eating ice. When one eats ice,chemical energy in the body is used to melt the ice and then raise the temperature of the melted ice to the temperature of the body, 37 degrees Celsius.Past scientific studies ...
January 22, 2011

geometry
rectangle ABCD is similar to rectangle wxyz , with AB corresponding to wx. if AB=24,BC=30 and wx=16 , what is the area of the rectangle wxyz
January 20, 2011

Social Studies
how has the internet changed video voyerism? noone answered when i posted it before
January 17, 2011

Social Studies
how has the internet changed video voyeurism?
January 16, 2011

comm 155
Describe your experience with credit and credit cards in a brief paragraph using at least five adverbs and five adjectives in your description. Bold the adverbs and underline the adjectives. What is the most effective way to determine whether a word is an adjective or an ...
January 15, 2011

math
Thank you!
January 14, 2011

math
A spotlight is attached to the ceiling 2 feet from one wall of a room and 3 feet from the wall adjacent. How many feet is it from the intersection of the two walls? a. 4 b. 5 c. 3 square root of 2 d. square root of 13 e. 2 square root of 3
January 14, 2011

math
Muhammad Chabali earns $13,600 per year. He is paid 12 times per year and claims 2 exemptions. His city and state combined tax him at a rate of 10%. How much tax is withheld per pay period?
January 10, 2011

Math
A person is standing next to a flag pole.The person is 6ft tall.She casts a shadow 10 ft long.The flag pole casts a shadow of 45 ft long.How tall is the flag pole.
January 9, 2011

pre-calculus
Which of these has the greatest average rate of change between 2 and 3 : f(x)=x ;g(x)=X^2 ;h(x)=x^3?
January 5, 2011

7th grade
how do you find the range of a math problem if you have all even numbers?
December 15, 2010

calculus
Two positive numbers have a sum of 60. what is the maximum product of one number times the square of the second number? a) 3481 b) 3600 c) 27,000 d) 32,000 e) 36,000 So Idk if this is right, but I have .... x+y=60 p=xy^2 p=x(60-x)^2 P'=-2x(60-x)+(60-x^2) x=.5021 x= 119.498...
December 14, 2010

calculus
Suppose that log2 = a and log3 = b Solve for x in terms of a and b: 6^x = 10/3 - 6^-x
December 6, 2010

material science/ chemistry
why are metals so apt to corrode while polymers are immune to corrosion?
November 30, 2010

Physics
A 250-gram pendulum bob is initially constrained at a 53 degree angle by two strings. When the horizontal string is cut the pendulum begins to swing. As the pendulum bob passes through its equilibrium position, what will be its velocity?
November 29, 2010

English
a. Paragraph one – Describe the subject that you are writing about, and say why this subject is important. b. Paragraph two – State the current situation associated with this subject(s). What is happening now in the field that triggered you to write an article about ...
November 29, 2010

Physics
A 250-gram pendulum bob is initially constrained at a 53 degree angle by two strings. When the horizontal string is cut the pendulum begins to swing. As the pendulum bob passes through its equilibrium position, what will be its velocity?
November 29, 2010

Math
Write the numeral 436eight in base ten
November 27, 2010

Access Nested IIF statement
Could someone please help me with my nested IIF statement? I am getting different errors for i such as "wrong number of arguments" and "missing bracket or closing parentheses." When I start adding parentheses then it will say wrong # of arguments. Any help ...
November 24, 2010

reworded my question, please read this
So for my essay, in paragraph 1, I explained what I have to say in my original post. In paragraph 2, I have to state the current situation associated with this subject(s). What is happening now in the field that triggered you to write an article about this subject(s). So I ...
November 23, 2010

english essay, please proof read
I have to write an essay on the chloera of haiti. For my intro, I have to write explain the subject and why it's important. I haven't written why it's important yet, but I described my subject. Can you please check to see if it's okay. Also, my essay only has ...
November 23, 2010

chemistry
Iron metal CANT reduce Fe3+ to Fe2+. Why?
November 19, 2010

Accounting
A credit saleof $800.00 is made on April 25th, terms 2/10, n/30, on which return of $50.00 is granted on April 28th. What amount is recieved as payment in full on May 4th?
November 16, 2010

Math
1. Whole Numbers/aren't whole numbers 11,8,16,9,20,50,100/ 4.5,3/5,8.6,14 1/2 2. Decimals/fractions/whole number 4.5,8.6/ 3/5,14 1/2 / 11,8,16,9,20,50,100 3. Prime Numbers/ Decimal Fractions/composite numbers 11/ 8.6,3/5,14 1/2 / 20,50,8,16,100,9
November 16, 2010

English
Are there any websites about medieval attitudes about Jews? In google i mostly get websites about a book.
November 5, 2010

English
Is there a difference between a root word and a base word, or are they the same thing?
November 3, 2010

social studies
what are some details for saying no to amendment 8?
November 2, 2010

social studies
can you help me start my persuasive essay on saying no to amendment 8 2010?
November 2, 2010

Social Studies- Jekyll Island
The 4-H Center was originally the Dolphin Club & Motor Hotel. The group of african americans that built the structure formed in 1956 as the St Andrews Beach Corporation. In August of 1959 the hotel opened but the corporation folded & sold the hotel to the Jekyll Island ...
October 28, 2010

math
i need help on # 3
October 27, 2010

Math
I wasn't sure of the conversion thank you very much.
October 24, 2010

Math
2/3 of 5/6 of xis the same as 3/4 of 4/5 of y. What is the value of x/y as a fraction in lowest terms?
October 24, 2010

math
Excuse me ...are you there?
October 24, 2010

math
I need to solve for x and y. Sorry
October 24, 2010

math
2/3 of 5/6 of x = 3/4 of 4/5 of y
October 24, 2010

spanish
i need these words unscrambled for spanish isasll sitvieleon ipsos
October 20, 2010

Physics
What physical phenomenom might produce emission spectra?
October 17, 2010

algebra 2
suppose you are enclosing a rectangular area to create a rabbit cage. you have 80 ft of fence and want to build a pen with the largest possible area for your rabbit, so you build the cage using an existing building as one side. make a table showing the areas for some selected ...
October 15, 2010

Math
In Mathematics: how much interest will you have to pay for a credit card balance of $554 that is one month overdue if a 20% annual rate is charged?
October 11, 2010

Intermediate Algebra
malay ko sau bhala ka!!!
October 11, 2010

Intermediate Algebra
idk
October 11, 2010

chemistry
what is the chemical equation of this problem
October 10, 2010

math
jim wants to place carpet in his living room.the dimensions of his living room are 15 3/4 feet by 18 1/8 feet.aprocimately how many square feet of carpet does he need to cover his living room????thanks for helping
October 9, 2010

algebra
Evaluate x+y/5 for x = 34 and y = 6
October 5, 2010

math
An elf has a staircase with 10 steps to climb. Each step it takes can cover either one stair or two stairs. In how many ways can the elf climb the stairs? For n stairs?
October 3, 2010

accounting 2
allen company sells flags with team logos. Allen has fixed costs of $588,000 per year plus variable costs of $ 5.50 per flag. Each flag sells for $ 12.50.
October 2, 2010

Physics
A pilot with a mass of 50 kg comes out of a vertical dive in a circular arc such that at the bottom of the arc her upward acceleration is 3.5g. (a) How does the magnitude of the force exerted by the airplane seat on the pilot at the bottom of the arc compare to her weight? (b...
September 29, 2010

calculus
consider the function f(x)=2x^2 +1. its tangent line at x=2 goes through the points (2,y1) and (-1,y2) where y1=?, y2=?
September 28, 2010

calculus
consider the function f(x)=2x^2 +1. its tangent line at x=2 goes through the points (2,y1) and (-1,y2) where y1=?, y2=?
September 28, 2010

calculus
if the tangent line to the function f(x)=ãx +a at x=16 has equation y=mx+6. find a and m. you may use the fact that f'(x)= 1/(2ãx)
September 28, 2010

calculus
for the function f(x)=4x^2 +7, find the equation of the tangent line to the graph of f at x+1. if the equation of the tangent line is written as y=mx+b. m=? b=?
September 28, 2010

chemistry
what flaws exist in Dalton's model of the atom?
September 26, 2010

Microeconomics
How did you get that answer pam??
September 23, 2010

science
of all the visible objects in the celestial sphere, which one appears to move the least? why?
September 17, 2010

science
which visible object in the celestial sphere moves the least? why?
September 17, 2010

calculus
if h(t) represents the height of an object above ground level at time t and h(t) is given by h(t)=-16t^2+13t+1. find the height of the object at the time whent eh speed is zero
September 14, 2010

math
the unit rate for 442 mi in 8.5 hr
September 14, 2010

calsulus
if h(t) represents the height of an object above ground level at time t and h(t) is given by h(t)=-16t^2+13t+1 find the height of the object at the time when the speed is Zero. h(t)=?
September 14, 2010

sociology
Using sociological imagination, analyze the scenary: Susy is a sophomore in college and get pregnant. Her boyfriend end up the relationship. Susy now drop all her classes
September 8, 2010

algebra 2
A chemist mixes some 20% acid solution with pure 100% acid to increase the concentration. How much pure acid and acid solution should be mixed to form 100 milliliters of 40% acid solution?
September 3, 2010

physics
A viaduct is being re-levelled by using a jackscrew with a pitch of 5mm. The mass of the top slab of the viaduct is 20 tonnes (20000kg) and its length is 40m. The lever arm used to turn the jackscrew is 60 cm long. Calculate the effort force to be applied to the end of the ...
September 2, 2010

science
an object has a volume of 74cm cubed and a density of .88g/cm cubed. What is the mass of the block?
August 31, 2010

com155 english
The issue about interest rates is the same as the supply-and-demand concepts. The higher the interest goes, the lower the demand on the market. The negative thing about low interest rates is that there is a tendency to increase prices of items because of the high rate in ...
August 30, 2010

dynamics, check my ans
Three identical train locomotives, on separate tracks, apply the maximum force needed to begin moving. The first train consists of a single empty freight car, the second train consists of 50 empty freight cars, and the third train consists of 50 equally loaded freight cars. ...
August 26, 2010

Science
I dont really get the question can someone explain to me?
August 21, 2010

Science
An area in your state has been flooded due to heavy rains. How might scientists from the three main branches of science interact in their study of the flood, its effects, and how future flooding might be controlled? Life science, Earth science, and physical scicence.
August 21, 2010

Math
Find the vertex of F(x) by using the formula for the x-coordinate of the vertex. F(x)= 4x^2 - 3x - 6 I don't exactly understand this question. could someone clear it up and help me solve it? Thanks!!
August 18, 2010

French
What is your favorite school subject? ^^
August 18, 2010

Chemistry
Calculate the ratio of moles of CO2 produced to moles of the original gas mixture? A mixture of methane (CH4) and ethane (C2H6) is stored in a container at 294 mmHg. The gases are burned in air to form CO2 and H2O. If the pressure of CO2 is 351 mmHg measures at the same ...
August 13, 2010

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