Tuesday
May 3, 2016

# Posts by Anne

Total # Posts: 701

Math
a 25.00 gram sample is placed in a graduated cylinder and then the cylinder is filled to the 50.0 mL mark with benzene. the mass of benzene and solid together is 58.80 gram. assuming that the solid is insoluble in benzene and that the density of benzene is .880 g/cm^3 , ...
August 23, 2010

math
32 is 40% of what number?
August 11, 2010

Science
Thank you So much! This was a HUGE help!!!
July 26, 2010

Science
Can someone please give me a SIMPLE definition of metabolism. I've seached tons of dictionaries, but they all give a long and confusing definition and I'm not sure if I understand the concept.. Please help!!
July 26, 2010

math
When a ball is thrown up into the air, it makes the shape of a parabola. The equation S= -5t^2 + v*t + k gives the height of the ball at any time, t in seconds, where “v” is the initial velocity (speed) in meters/sec and “k” is the initial height in meters...
June 15, 2010

Math
Which of the following is an example of a ratio? number of dogs who like Good boy treats number of chocalates per bag number of people who like math all of the above Please help
May 25, 2010

management
Think of a recently completed group project that you have been involved in. This project may have been a student project, a group project, or an extracurricular project. Briefly describe the situation and choose one of the following to post on the discussion board: Analyze how...
May 23, 2010

geometry
a pallelagram?
May 20, 2010

algebra
A train hit him
May 16, 2010

Chemistry
Is 20.0 mL of 1.0M CH3COOH and 10.0mL of 1.0 M NaOH a buffer solution of 3?
May 4, 2010

floral designing
what kind of container do you need for a Hogarth arrangement?
April 23, 2010

math
a jar contain 8 blue blocks 4 red ,9 orange and 4 green ones. About what fraction of the time would you expect to pull out a blue block?
April 19, 2010

Solve to the nearest minute: x is greater than or equal to 0 and less than 360. 3sec^2 x-8tan-6=cotx
March 28, 2010

trig
Prove that tan4x=(4tanx-tan^3x)/(1-6tan^2 x+tan^4 x) *note: the exponents are just numbers. there are no variables in the exponents.
March 27, 2010

Chemistry
You have to make sure that each ELEMENT has the same number of atoms on each side of the equation. so treat polyatomics like they are separate elements. if you have say, SO4 on one side, you have to make sure that there are 4 oxygen atoms and one sulfur atom on the other side ...
March 27, 2010

math
first solve each like they have an equal sign: 4>-2x+3 -3 -3 1>-2x -1/2<x (when you divide by a negative # in an inequality, you change a less than to a greater than or visa-versa) 12<-2x+5 -5 -5 7<-2x -7/2>x (same thing) hope that helped
March 27, 2010

Math
the formula for midrange is M=(maxX-minX)/2 (i think) so it'd be M= (28-6)/2 M=(22)/2 M=11
March 27, 2010

college chemistry - answer check ASAP!
The corrosion of iron can be thought of as an electrochemical cell reaction. Calculate the voltage difference between two points of corroding iron differing only in their partial pressures of oxygen: 0.20 atm of oxygen at one point and 0.0010 atm of oxygen at the other. The ...
March 13, 2010

estimating
A security analyst specializing in the stocks of the motion picture industry the relation between the number of movie theater tickets sold in December and the annual level of earnings in the motion picture industry. Time-series data for the last 15 years are used to estimate ...
March 11, 2010

chemistry
Give the cell diagram notation of the electrochemical cell that could be used to determine experimentally the dissociation constant (Kw) of water. The standard reduction potential for: O2 + 2H20 + 4e- ---------> 4 OH- 0.40 V
March 9, 2010

Science
Homw many grams of copper sulfate pentahydrate (CuSo4 5H2O) would you heat to produce 29.8 g of water?
March 9, 2010

KEYBOARDING AND WORD PROCESSING
Which of the following is correctly capatalized? (a Sincerely Yours (b Anatomy And Physiology (c Dear Mr. Welby (d Ladies and gentlemen
March 6, 2010

Statistics
There are 100 marbles in a bag. 200people are asked to draw a ball. Each marble drawn is put back into the bag before the next draw. 7 people draw red color marbles. How many red marbles are there in the bag?
March 4, 2010

math
how would u factor ab (to the 2nd power) - b
February 21, 2010

CALCULUS
If 6 J of work are needed to stretch a spring from 12 cm to 13 cm and 10 J are needed to stretch it from 13 cm to 14 cm, what is the natural length L of the spring?
February 21, 2010

CALCULUS
Use the method of cylindrical shells to find the volume V generated by rotating the region bounded by the given curves about the y-axis. Y = 3/X, Y = 0, X =5, X = 2
February 18, 2010

marketing
If you are using the Internet and Web resources for a business publication, under which conditions is it not necessary to include a citation?
February 12, 2010

English
What's a good TITLE for a play about a girl who acts so depressed because of a mothers death and a friend who helps her out in the end realize she can move on??!! Please I'm stuck, I want something creative! Any ideas??!!
February 3, 2010

English/Ideas
I have to write a 10 minute play in English on a topic of my choosing. I'm in High School and I need a couple of ideas. I'm pretty good when it comes to writing, it just takes me a while to come up with a topic. I was thinking maybe something funny, dramatic, or a ...
February 3, 2010

Physics
Describe the path of a moving body whose acceleration is constant in magnitude at all times and is perpendicular to the velocity.
January 24, 2010

English
Thank you for all your help Ms. Sue. :)
January 9, 2010

English
Wait so is it: 5. Four years later, Rudolf achieved her greatest personal triumph, three gold medals in a single Olympics. *ANSWER* AP=three gold medals in a single Olympics WM=triumph
January 9, 2010

English
I need help making sure I rewrote the following sentences correctly while including the appositive or appositive phrase. I made corrections. Are they right? 1. The Olympic athlete also overcame polio. (Ray Ewry) ANSWER= Ray Ewry, the Olympic athlete, also overcame polio. 2. ...
January 9, 2010

English
I need to check my answers. The assignment was to write the appositives and appositive phrases in the following sentences, along with the words they rename or identify. Are these Correct? 3. A basketball star at age 13, she was known for her speed. *ANSWER* AP=A basketball ...
January 9, 2010

English
I need help making sure I rewrote the following sentences correctly while including the appositive or appositive phrase. 1. The Olympic athlete also overcame polio. (Ray Ewry) ANSWER= Ray Ewry, the Olympic athlete also overcame polio. 2. Ewry competed in the standing high ...
January 9, 2010

English
I need to check my answers. The assignment was to write the appositives and appositive phrases in the following sentences, along with the words they rename or identify. 1. Wilma Rudolph, another champion sprinter, also overcame a disability. *ANSWER* AP=another champion ...
January 9, 2010

Biology
What are two autotrphs that don't use sunlight? How might these organisms provide clues to exterrestrial life?
October 30, 2009

Chemistry
Thanks so much!
October 7, 2009

Chemistry
Sorry for pestering you on this but I really appreciate your help. The way I first did the equation, I had too many products. My question is when I do these should the products only be in the form of either a)CO and H2O or B)C and H2O? So if I set up the products to have ...
October 7, 2009

Chemistry
Thanks. Is there any way to tackle these incomplete combustion equations, any form to follow? I'd really appreciate it since I'm clearly on the wrong track.
October 7, 2009

Chemistry
I have a question about incomplete combustions. I think that you can have carbon monoxide, carbon dioxide, water and carbon or some combination of these in the products of incomplete combustions. Is this right? For Pentane, would it be correct to show one possible equation as ...
October 7, 2009

Math
The average of 2 numbers is 34. The first number is three times the second number. what are the two numbers?
September 20, 2009

Science
I need examples of each of the seven crystalline systems.
September 17, 2009

basic chem
so does that mean that S can have a net ionic charge of +4 as well as -2?
September 15, 2009

basic chem
Oxygen has a charge of -2 Sulfur has a charge of -2 My product in a equation is S02 but how is this possible is they both have the same charge? because now the S has a charge of -2 and the O of -4
September 15, 2009

History
its in south asia
September 15, 2009

Precal
Xmin=-10 Zmax=10 Xscl=1 Ymin=-10 Ymax=10 Yscl=1
September 15, 2009

Algebra
sorry i messed up ou have to multiply the seven too
September 15, 2009

Algebra
multiply each side by 6, which wuill cancel out the 6 on the left side of the equation, and on the left you will multiply 2/3 and 6, giving you 4. now you have m-7=4 add 7 to both sides, giving you m=11
September 15, 2009

math analysis
Go to Y= and type in your f(x)= and go to second, graoh and look for the zero in the y1 column
September 15, 2009

AP chemistry
Sodium azide, the explosive chemical used in atuomobile airbags, is made by the following reactions: NaNO3 + 3NaNH2 => NaN3 + 3NaOH+ NH3 If you combine 15,0 g of NaNO3 (85 g/mol) with 15.0 g of NaNH3, what mass of NaN3 is produced?
September 15, 2009

Math
I don't understand what you mean by the commas v=(0,-590)?
September 12, 2009

Math
An airplane is heading due south at a speed of 590km/h. If a wind begins blowing from the southwest at a speed of 65.0km/h (average). Calculate magnitude of the plane's velocity, relative to the ground. Calculate direction of the plane's velocity, relative to the ...
September 12, 2009

Math
A boat, whose speed in still water is 2.80m/s , must cross a 280m wide river and arrive at a point 120m upstream from where it starts. To do so, the pilot must head the boat at a 45.0 degrees upstream angle. What is the speed of the river's current?
September 12, 2009

palmerston
the trees bent in the wind.(and) their leaves fluttered. need to join these sentences together by using and
September 7, 2009

home economics
name 12 careers in home economic management
September 6, 2009

Math (pls help)
write the number in expanded form. 1) 46,182 2) 20, 397
September 5, 2009

foreign language
How do I translate this poem into English (it's in portuguese)? Eu queria você perto de mim Queria poder abraçar com todo meu carinho A gente se encontra apenas nos sonhos Por que a gente é tão feliz nos sonhos? Sempre vejo a gente sorrindo, se ...
July 29, 2009

Finite Math
Use the formula m=(y2-y1)/(x2-x1)
July 23, 2009

physics
our class was given an extra credit assignment where we have to design a mobile that has both the net forces and torques = 0. i have all of the masses know i just don't know how to find radii. no two masses can be in the same position nor can they be at the center of mass...
July 3, 2009

budgets and forcasting
How are budgeting systems used to weigh the efficiency and effectiveness of a health and human service agency? Why is this important?
June 25, 2009

financial management
What is the basic accounting formula?
June 7, 2009

english
I need help finding metaphors and assonances in 5 poems? I Played a Game I played a game. I rode my bike. I had a snack. I took a hike. I read a book. I watched T.V. I built a fort. I climbed a tree. I surfed the web. I played guitar. I caught a bug inside a jar. I called my ...
June 5, 2009

pre-algebra
I have two questions about finding the slope of a line. First question: Is the formula Y2-Y1 over X2-X1? Second question: When I am given a line on a graph, how do I find Y1, Y2, X1, X2 to use in finding the slope?
May 16, 2009

Chemistry
Every balanced equation is written so BLANK is/are conserved atoms mass a and b None of the above I thought the answer would be matter, but that's not an option. What would it be then? Thanks!
April 20, 2009

English
1) I heard him say that... Please explain the grammar rules for "say" (present tense) after the word "heard". 2) A Economic Development Board survey... Why is it "a" not "an"? Is it because it is "a survey"? 3) A historic ...
April 4, 2009

Chemistry
We say that an ionic bond is the electrostatic force of attraction between oppositely charged ions. What does electrostatic mean?
April 1, 2009

Chemistry
Is sulphuric acid covalent? Please explain. Thanks.
March 22, 2009

Chemistry-confused
I am rather confused. Is sand considered a mixture or a compound? Some have said it is a compound because it is silicon dioxide. Others have said it is a mixture because it is impure silicon dioxide. So...?
March 21, 2009

Chemistry-help
What is the chemical equation for the reaction between iron and sulphur to produce iron sulphide? Do we write sulphur as S or S8?
March 20, 2009

Science
Do potato cells have chloroplasts?
March 20, 2009

Health
The most serious type of allergic reaction? a.atrial fibrillation b.psoriasis c.anaphylaxis d.lupus
March 20, 2009

Can calcium react with chlorine gas to give calcium chloride?
March 19, 2009

stats
chi square for independence 1) my obtained value does not exceed the critical value, I will reject the alternate and accept the null. Do I state that the results is due to chance and there is no relationship between the variables.
March 6, 2009

physics
idk the answer i am trying to find the answer for my own homework. GUESS WHAT? chicken butt. jk. I need help on my hw too since i got work we didnt practice for. Ok ONE question of the three we didnt learn. So.....I cant really help you. Sorry.
February 23, 2009

chemistry
I read in a book that gas particles move rapidly in all directions. Somehow I find that random directions is better.The word "all" sounds a bit weird. What do you think?
February 9, 2009

Chemistry-help needed
1) Does Alumnium react with steam to give metal oxide and hydrogen gas? 2) Does Aluminium react with dilute hydrochloric acid? What are the products? 3) Will Tin react with dilute hydrochloric acid to give tin(II)chloride and hydrogen gas?
January 28, 2009

Science
"Blow up a balloon and tie it up. Leave it for a few days. After a few days, the balloon becomes smaller.Why?" The answer given is that the air particles diffuse out of the balloon. Can you please explain the answer? I understand that diffusion involves particles ...
January 28, 2009

science-chemistry
For diatomic molecule, must the 2 atoms be of the same element, e.g H2?Is CO a diatomic molecule?
January 27, 2009

Science
1) Instead of using the word "random",is it acceptable to say particles in a liquid move about in "different" directions? 2) Why does ice have a higher density than water vapour? Is it because ice has a greater mass in a fixed volume? 3) The statement "...
January 26, 2009

Science-Chemistry
1)Fill in the blanks. In a liquid, particles are _____arranged. They move about in ____ directions and slide over one another. Can I say "irregularly" & "any" as the answers? I know "random directions" is better, but can we accept "any ...
January 26, 2009

chemistry
thank you.
January 22, 2009

chemistry
In an atom, there is a force that holds the protons & neutrons in the nucleus. Is this force called the nuclear force? What about the force of attraction between the nucleus and electrons? Is is called the electrostatic force of attraction?
January 22, 2009

Chemistry
If you look at the Periodic Table,you will see chlorine with a relative atomic mass of 35.5. That means the average mass of a chlorine atom found in nature is ________?
January 22, 2009

4. is A its on page 36
January 19, 2009

computers
I was wondering if anybody could please tell me what I need to do I went to work on my power point project and when I turned on my computer a lot of my icons were missing such as my excel power point microsoft office 2007 my documents pictures my back ground ( wall paper is ...
January 16, 2009

Physics
What are the differences between a motor and a generator? I know they both use electromagnets, but how do they use them differently?
January 10, 2009

Physics
If the current in a wire is 0.1A, how long will it take for 10C of charge to pass through it?
January 3, 2009

natural logs
can't use a graphing calculator (not allowed). I'm trying to find the area between curves, if that helps.
December 19, 2008

natural logs
Solve for x: ln(x+1)+ 2 = x^2 – 8x + 12
December 19, 2008

African and Hispanic Studies
What is Jim Cummins' "Intervention Model" all about. Present the elements of this model and in your opinion, can it be successful in reversing the history of failure the Puerto Rican children have experienced in the American schools? Illustrate some of the ...
December 17, 2008

PHysics
a 15g bullet strikes and becomes embedded in a 1.1kg block of wood placed on a surface in front of the gun. if the coefficient of kinetic friction between the block and the surface is 0.25 and the impact drives the block a distance of 95m before it comes to rest, what was the ...
December 6, 2008

chem-help
I got that A was Cl2 and B was CH2 but i do not understand how to get the grams of C produced, i am confused at this point.
December 3, 2008

chem-help
no i did identify compounds A and B i just do not understand how to do part a
December 3, 2008

chem-help
Use the following information to identify element A and come pound B, then answer questions a and b. An empty glass container has a mass of 658.572 g. It has a mass of 659.452 g after it has been filled with nitrogen gas at a pressure of 790. torr and a temperature of 15°C...
December 3, 2008

There are 7 girls in a bus. Each girl has 7 backpacks. In each backpack, there are 7 big cats. For every big cat there are 7 little cats. Question: How many legs are there in the bus?
November 24, 2008

Chemistry
Thanks!
October 27, 2008

Chemistry
Hi, This is one of my chem hw problems. Does anyone have links to websites that might help me solve this..or equations? It sounds like there are two parts to the question but I'm not sure. Volts and Joules? 1. Electrons are used to determine the structure of crystal ...
October 27, 2008

math help
Is it supposed to be 5 square root of (x ^7 and y^4)? It should be 5 then you expand everything in the sqroot to be (x x x x x x x y y y y) Then take out for every two of each letter, make it one whole one..... so you get 5 x^3 y^2 squareroot (x) I think that's what it ...
October 26, 2008

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