Thursday

March 5, 2015

March 5, 2015

Total # Posts: 1,306

**Chemistry**

What weight of copper(II) oxide, CuO, would theoretically be produced from 1.623 grams of copper? (mol. masses Cu = 63.55; O = 16.00)
*September 22, 2010*

**Chemistry**

So from 1.623 g of Cu, I'd get: ANS: 1.252 X 1.623 g of Cu = 2.032 g OR ANS: 1.623 g of Cu/1.252 = 1.296 g? OR ANS: 1.623 - 1.252 = 0.371 g I am still confused what you mean by that question.
*September 22, 2010*

**Chemistry**

What weight of copper(II) oxide, CuO, would theoretically be produced from 1.623 grams of copper? (mol. masses Cu = 63.55; O = 16.00)
*September 22, 2010*

**chemistry**

a metal weighing 20.32 g is added to a flask with a volume of 24.5ml. it is found that 18.52 g of water must be added to fill tha flask what is the density of metal
*September 15, 2010*

**French**

Okay thank you (:
*September 7, 2010*

**French**

That would make more sense. Unfortunetley my worksheet definitley caise "combien de notes" :(
*September 7, 2010*

**French**

Thats what I thought it meant too, but there isn't anything to do with notes about this research project so it does not make any sense.
*September 7, 2010*

**French**

Translate to English: Combien de notes aurez-vous pour votre projet de recherche? I've tried this on translating sites, but the translations just don't make any sense. The part about notes...I don't think it means notes in English. Please help!
*September 7, 2010*

**microbiology**

penicillin was called a" mircle drug" because it doesnt harm cell. why doesnt it?
*September 2, 2010*

**math**

If the sides of a square are lenthened by 7 cm, the area becomes 121 cm^2. Find the length of a side of the original square
*August 29, 2010*

**math**

If the sides of a square are lenthened by 7 cm, the area becomes 121 cm^2. Find the length of a side of the original square
*August 29, 2010*

**math**

state the value of the discriminant and the discribe the nature of the solution 20x^2-8x-17=0
*August 29, 2010*

**Math**

find a polynomial for the perimeter and for the area m+2 on top and m on the right side?
*August 29, 2010*

**statistics**

without the use of the standard normal tables, should techniques of calculus be used to find the probabilities concerning a normal distribution?
*August 20, 2010*

**statistics**

what is the most likely answer for the confidence coefficient of linear correlation if x = the number of hours spent studying for a test, and y = the number of points earned on the test?
*August 20, 2010*

**statistics**

the random variable x is normally distributed with a mean of 75 and a standard deviation of 15.0. For this distribution, what is the twenty-third percentile?
*August 20, 2010*

**math **

maria bicycles 8 km/h faster than carlos. in the same time it takes carlos to bicycle 48 km maria can bicycle 72 km. how fast does each bicyclist travel?
*July 21, 2010*

**math**

sorry elana is supposed to be maria
*July 21, 2010*

**math**

maria bicycles 8 km/h faster than carlos. in the same time it takes carlos to bicycle 48 km, elena can bicycle 72 km. how fast does each bicyclist travel
*July 21, 2010*

**Accounting**

Costs can be classified into two categories, fixed and variable costs. These costs behave differently based on the level of sales volumes. Suppose we are running a restaurant and have identified certain costs along with the number of annual units sold of 1000. Item: Raw ...
*July 20, 2010*

**Chemistry**

a chemist needs 46 mol of ammonia for a reaction to complete. he has 46 grams available but needs ammonia as a liquid (D=2.4g/ml). does he have enough? ammonia has an atomic weight of 17 grams
*July 12, 2010*

**Chemistry**

im trying to do the dimensional analysis for it but i keep getting up to a point and stopping. i get as far as.... 46g x 1mole/17g x ___/ mole ... im not really sure what to do after that.
*July 12, 2010*

**Chemistry**

a chemist needs 46 mol of ammonia for a reaction to complete. he has 46 grams available but needs ammonia as a liquid (D=2.4g/ml). does he have enough? ammonia has an atomic weight of 17 grams
*July 12, 2010*

**Physics**

A -4.0-µC charge is located 0.30 m to the left of a +6.0-µC charge. What is the magnitude and direction of the electrostatic force on the positive charge?
*July 6, 2010*

**phys/ 210**

I need help in answering this question personality theories disussed in text i am using learning theory and trait theory comparing and contrasting these two theories
*July 3, 2010*

**american government**

i believe that a would be the correct answere due to so there would not be confusion in the law and questions can be avioded in understanding the law.
*July 2, 2010*

**Spanish please help?**

Sra ramired is asking her family if they did everything they were supposed to do today write the excuses with the correct preterite form like i know what that is of HACER,IR,PODER,SER or TENER paquito fuiste a la biblioteca verdad? ay no mama no ________ 1 ir ____________ 2 ...
*June 29, 2010*

**math**

39mg radioactive with 1/2 life is decay total in 2.5 years. How many mg it remain if half of the amount is decay in 2 years? Thank you!
*June 18, 2010*

**algebra**

(3x^2-4x+6) -(-2x^2 +4) The signs change for the 2 and 4 ____________________when you distribute the -1 ( 5x^2 -4x +2) +( -5x-3) __________________ 5x^2 -9x-1
*June 5, 2010*

**algebra**

Solve the equation for r w=Cr^-2
*June 5, 2010*

**math just need someone to check and make sure this**

The Office Jet printer can copy Janet's dissertation in 10 min. The Laser Jet printer can copy the same documents in 8 min. If the two machines work together, how long would they take to copy the dissertation? 10*8=80 80/18= 4.4 so it would take 4 min. is this correct?
*May 20, 2010*

**math**

Train A is 12 mph slower than train B. Train A travels 230 miles in the same time it takes train B to travel 290 miles. Find the speed of each train.
*May 20, 2010*

**Vectors**

if |x|=2 and |y|=5, determine the dot product between x-2y and x+3y if the angle between vector x and y is 60deg.
*May 14, 2010*

**Vectors**

A triangle has vertices A(2,3,7), B(0,-3,4) and C(5,2,-4) A) determine the largest angle in the traingle b) determine the area of of the triangle pls tell me how to solve the problem
*May 14, 2010*

**Vectors**

Cross product of vector: If axb(cross product)=(2,0,1) and bxc= -4,0,-4 solve magnitude of axb times magnitude of b x c |a x b| x|bxc|
*May 14, 2010*

**Vectors**

the vector a-5b and a-b are perpendiculat. If vector a and b are unit vectors, then determine axb
*May 13, 2010*

**Vectors**

Using a vector diagram explain why it i easier to do chinups when your hands are 30cm apart instead of 90cm apart. (Assume the force that is excerted by your arms are the same in both cases
*May 13, 2010*

**9th grade**

find the slope of the line? (-1/2, 2/3) and (3/2,14/3)
*May 12, 2010*

**litureature**

According to the analyses of the stories you were asked to read, "A Pair of Silk Stockings" best represents literary
*May 12, 2010*

**biology**

which group of seed producers are the largest, most massive and oldest in the world? angiosperms or gymnosperms?
*May 11, 2010*

**algebra**

Graph: y = x - 6
*May 11, 2010*

**math Please helpppp**

evaluate r^2-3 when r=-7
*May 9, 2010*

**English Essay**

Directions: We are doing a problem- solution essay so I chose to right about Cyberbullying. It's supposed to be six paragraphs. So after your finished reading this could you please give me a comment on it, and a letter grade thanks. Cyberbullying Cyberbullying is a very ...
*May 8, 2010*

**statistics**

what is the range of the values 2.0, 3.7, 4.9, 5.0, 5.7, 6.7, 8.5, 9.0? what is the median, mean, and mode?
*May 8, 2010*

**College Finance**

Aunt Sally's Food Inc. is considering expansion. Sally has paid $100,000 for a marketing study to assist in the potential valuation. The study indicates that the new product will have sales of $1,500,000 per year each year for the next 6 years. However, existing product ...
*May 6, 2010*

**Finance**

Aunt Sally's Food Inc. is considering expansion. Sally has paid $100,000 for a marketing study to assist in the potential valuation. The study indicates that the new product will have sales of $1,500,000 per year each year for the next 6 years. However, existing product ...
*May 6, 2010*

**Algebra**

solve using the quadratic formula 2x^2 +6x-3=0
*May 6, 2010*

**Math**

Today Jamal had a spelling test. There were 21 words on the test. Jamal spelled two-thirds of them correctly. How many words did Jamal spell correct?
*April 28, 2010*

**Math**

Tameka's mother made fish fries for lunch. She made fish ice cream for dessert. It takes 6 small fish to make 1 1/2 cups of ice cream. How many fish does it take to make 4 cups of ice cream?
*April 28, 2010*

**205 Critical Thinking**

What do you think about this statement? Inductive and Deductive claims such as all,none, or some, impact the assertions od argument.
*April 25, 2010*

**algebra**

how do you find the solution set to 7/w=8/w - 1/3?
*April 25, 2010*

**English.**

That was not really helpful. I think I got it anyway.
*April 18, 2010*

**English.**

What am I suppose to do? I chose House M.D. as my show. I don't understand what this assignment is asking exactly. Essay Assignment (Essay 2) Now that you have summarized a television series, go back and examine the characters. How does the television show portray 1) race...
*April 18, 2010*

**algebra 1**

1) Can you write a binomial in standard form with degree of zero? Explain. 2)Canyou write a binomial with a degree of 3? Explain. Can you help me answer this question please.
*April 14, 2010*

**communications**

This is homework for communications class, and I'm not sure what the hell I need to do. I need to get a good grade, because I'm not doing to well. Please help. Here is what to do. Using I language Practice using I language. Use it at work, school, home with your family...
*April 11, 2010*

**geography / 8 grade**

I am looking for Japan Now. Ethnicity, languages, religion, education,male/female roles and expectations,type of gvt.,foreign aid,and financial status. I need any magazine or newspapers sources can you help me find these information please.
*April 8, 2010*

**his 125**

if the 14 Points were actually followed could World War II have prevented? Even without the League of Nations would the reforms Wilson advocated for foreign relations have worked?
*April 4, 2010*

**geogrraphy**

Does Japan has foreingn aide?
*April 3, 2010*

**break even analysis**

13. Healthy Foods, Inc., sells 50-pound bags of grapes to the military for $10 a bag. The fixed costs of this operation are $80,000, while the variable costs of the Grapes are $.10 per pound. A .What is the break-even point in bags?
*April 2, 2010*

**geography**

I am doing project about Japan.On the section of Government/history-I have to find and write about taxes I searched but did not find anything talk about taxes .Can you help me please? thank you
*April 1, 2010*

**world geography**

what the difference between landforms and historical lanndmark
*March 30, 2010*

**world geography**

I am doing project about Japan what is historical landmarks means?what to write ?
*March 30, 2010*

**law**

Which one of the following is an example of a leading question? 1. What time did you administer the medication? 2. How long have you worked at West End Hospital? 3. Did you see Dr. Martin in the patient's room on the morning in question? 4. Isn't it true that you never...
*March 20, 2010*

**Chemistry**

A sample of benzene, C6H6, weighing 3.51 g was burned in an excess of oxygen in a bomb calorimeter. The temperature of the calorimeter rose from 25.00 C to 37.18 C. If the heat capacity of the calorimeter is 12.05 kJ/K, what is the molar energy of combustion for benzene? Also...
*March 17, 2010*

**english**

so if i wrote what happened 10 years before i use preterit or past perfect? please...
*March 15, 2010*

**english**

I would say "for the first year"
*March 15, 2010*

**english**

I would like to know if I begin my story "The man was remembering how, ten years before, he had given a party..." I talked of what happened in past perfect or preterit ex: for the first in solitary confinement he suffered / or / he had suffered the bet have ...
*March 15, 2010*

**english**

I know what I wrote doesn't mean anything
*March 15, 2010*

**english**

PRETERIT it is a tense I use it in: I was young I went to ... I bought a present
*March 15, 2010*

**english**

I don't speak english (every day)it is my second language that's why I asked you that...
*March 15, 2010*

**english**

hello :) I wrote a story with preterit in that story the man talks of what happened 10 years before (It's a bet, he should be ruined finally when the other man finished his bet , he waives the money) what are the tenses which I have to use? so please help me
*March 15, 2010*

**english**

***Can you correct me the tenses?***
*March 13, 2010*

**english**

nobody??
*March 13, 2010*

**english**

please? If you want I can help you on or in french( i'm) and spanish
*March 13, 2010*

**english**

Hello! I had to read a novel and do a work about it I told what I read Can you above all correct me the tenses? The narrator, an old banker, was remembering how, fifteen years before he had given a party. There had been many clever men, they had talked of capital punishment. ...
*March 13, 2010*

**FRENCH**

Mme, this helps alot. Merci beaucoup.
*March 9, 2010*

**FRENCH**

Could explain the Pronoms Complement D'objet Direct. Thanks for your help.
*March 9, 2010*

**hospitality**

identify the major trans related to diversity and explain their effects on the hospitality industry
*March 4, 2010*

**biology /check please**

1-What phase are daughter cells in as a result of mitosis? -Anaphase 2- During what phase of mitosis do centromeres divide and the chromosone-mes move toward their respective poles? -prophase 3- Wchich phase of mitosis is the last phase that chromatids are together? -anaphase ...
*February 28, 2010*

**biology can someone check**

1) What phase are daughter cells in as a result of mitosis? answer: Anaphase 2)During what phase of mitosis do centromeres divide and the chromosomes move toward of their respective poles? answer: prophase 3)Which phase of mitosis is the last phase that chromatids are together...
*February 28, 2010*

**Biology/help please**

1) What phase are daughter cells in as a result of mitosis? answer: Anaphase 2)During what phase of mitosis do centromeres divide and the chromosomes move toward of their respective poles? answer: prophase 3)Which phase of mitosis is the last phase that chromatids are together...
*February 28, 2010*

**biology**

1) What phase are daughter cells in as a result of mitosis? answer: Anaphase 2)During what phase of mitosis do centromeres divide and the chromosomes move toward of their respective poles? answer: prophase 3)Which phase of mitosis is the last phase that chromatids are together...
*February 28, 2010*

**biology**

1) What phase are daughter cells in as a result of mitosis? answer: Anaphase 2)During what phase of mitosis do centromeres divide and the chromosomes move toward of their respective poles? answer: prophase 3)Which phase of mitosis is the last phase that chromatids are together...
*February 28, 2010*

**BIOLOGY**

1) What phase are daughter cells in as a result of mitosis? answer: Anaphase 2)During what phase of mitosis do centromeres divide and the chromosomes move toward of their respective poles? answer: prophase 3)Which phase of mitosis is the last phase that chromatids are together...
*February 28, 2010*

**biology**

What structure is produced when spindle fibers radiate from centrioles? Can you help please?
*February 28, 2010*

**Math**

graphing method to solve linear programming problem. z=8x+12y 40x+80y=560 6x+8y=72 x=0y=0 Is there a short cut to find the mmaximum without using the graph?
*February 27, 2010*

**Math**

Thanks Reiny
*February 27, 2010*

**Math**

using echelon method 4x-2y=9 20x-10y=27 pls help with problem. Once I get 24x -2y 36 I'm confused after that.
*February 27, 2010*

**english **

I need a web to search for antonyms
*February 24, 2010*

**algebra**

3(-4) + 12 = -7(-4) - 28 -12 + 12 = 28 - 28 0 = 0
*February 21, 2010*

**math**

line parellel 4x=3y-13. got an ans of 13/4 but not sure if it's correct.
*February 20, 2010*

**Math**

Finding the equation of the least square line.Ex=110, Ex^2 =1540, Ey=468, Ey^2=22,434, Exy=5524. The answer is Y=1.139x+34.27. I can figure out the 1.139 but not the 34.27. Pls Help
*February 19, 2010*

**Math**

A triangular number is a number that can be represented by dots arranged in a triangular shape. The first four triangular numbers are 1, 3, 6, 10. What is teh 10 triangular number? The 20th? The 100th?
*February 15, 2010*

**math**

9x+3= -66 5x-3y= -60 solve using elimination method?
*February 14, 2010*

**Precalculus**

An airplane is flying due west at a velocity of 100 m/s. The wind is blowing south at 5 m/s. a. Draw a labeled diagram of the situation. b. Find the resulting ground speed and bearing of the airplane?
*February 14, 2010*

**geometry**

Which geometric figure could not be drawn using both perpendicular line segements and parallel line segements? A.a pentagon B. a rectangle C. a trapezoid D. a triangle IS the answer(D) a triangle
*February 13, 2010*

**accounting**

Ed O'Connor Associates reported short-termed notes payable as follows: 2012 2011 current liabilities (partial) short-term n/p $16,700 $15,500 salary payable 3,800 3,200 During 2012 O'Connor paid off both current liabilities that were left over from 2011. During 2012, O...
*February 9, 2010*

**Business**

Explain which moral philosophy is best suited for making business and why
*February 9, 2010*

**11th grade**

Well there's different things you do in Stoichiometry, so it all depends. Stoichiometry is Balancing Equations, Knowing the Mole Ratios, Mole to Mole, Mole to Mass, and Mass to Mass Conversions.
*February 8, 2010*

**algebra**

Ms. Sue, I thought the problem was x minus 3 equals 12, so I apologize.
*February 3, 2010*

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