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Posts by Julie

Total # Posts: 1,156

Chemistry
**When 0.187 g of benzene,C6H6, is burned in a bomb calorimeter, the surrounding water bath rises in temperature by 7.48 C. ** Assuming that the bath contains 250.0 g of water and that the calorimeter itself absorbs a negligible amount of heat, calculate combustion energies (...

Chemistry
How much energy (in kilojoules) is required to convert 280mL of diethyl ether at its boiling point from liquid to vapor if its density is 0.7138 g/mL? Its heat of vaporization is +26.5 kJ/mol at its boiling point.

math
wat is 310000 dollars divided by 9 people?

data management grade 12
Did you ever find the answer to this qustion?... i'm doing the exact same course and need help with it!

Math
How do you do this problem. Thanks for your help. 4(2m+3)=-3(m-1)+7

calculus
What quantity of 65 per cent acid solution must be mixed with a 25 percent solution to produce 384 mL of a 50 per cent solution?

algebra
thats what i thought but the choices for the answers are - 11/3, -3/11 or -5/3 thanks anyways!

algebra
find the slope of the line that contains (1,6) and 10,9) i thought the answer was -3/9 ( negative 3 over 9) but i guess that is incorrect where did i go worng? any halp is greatly apreciated!

algebra
find the slope of the line that contains (1,6) and 10,9) i thought the answer was -3 - 9 but i guess that is incorrect where did i go worng? any halp is greatly apreciated!

science
which statement is true about the volume of the water displaced when the golf ball dropped into the large beaker? 1)It is equal to the volume of the golf ball. 2)It is greater than the volume of the golf ball 3)It is less than the volume of the golf ball 4)It is twice the ...

science
in which state of matter do particles stay close together,yet are able to move past one another? 1)solid 2)gas 3)liquid 4)plasma

English
Write a five paragraph papper on the importance of literary elements on literatuer. Use examples.

History
What was the frontier type who was the "cutting edge of the frontier" who changed the land rather than simply adapting to the wilderness? This one has me stumped. Would it be the cowboys?

math
3/4 X 1/2 8/9 X 5 1/7 1/3 X 2/5 2 5/8 X 6 1/3 X 6 3 3/4 X 2 4/5 2/5 X 3/7 5/7 x 4 3/8 3/8 X 10 20 X 1 2/5 1/6 X 3/5 2/9 X 3 9/10 x 4/5 7/8 X 2/9 3 1/3 x 2 1/4

Business Math
Problem 2: For each journal entry, prepare an explanation of the business event that is being represented: a. Loan payable $57,000 Cash $11,400 Inventory $45,600 b. Accounts payable $13,450 Cash $13,450 a. The company borrowed $57,000 from a bank. $45,600 of this was used to ...

college
Problem 2: For each journal entry, prepare an explanation of the business event that is being represented: a. Loan payable $57,000 Cash $11,400 Inventory $45,600 b. Accounts payable $13,450 Cash $13,450 a. The company borrowed $57,000 from a bank. $45,600 of this was used to ...

finance
I have worked and worked on this problem and came up with 2 different answers for b. and now am unsure of my answer for a. Problem 2: For each journal entry, prepare an explanation of the business event that is being represented: a. Loan payable $57,000 Cash $11,400 Inventory...

financial analysis
In the preceding paper, Team B included a comprehensive discussion on the takeover target of Wal-mart. The Team identified of any lenders that Wal-mart uses and the role each plays in the organization. The Team also named the investment bank used by Wal-mart to issue stock and...

financial analysis
Can someone help me understand how to remove the 'passive voice' from the following Conclusion? Included in the preceding paper is a comprehensive discussion on the takeover target of Wal-mart. The identification of any lenders that Wal-mart uses and the role each ...

3rd grade math
Writing in math, how would a 3rd grader explain how to use multiplication to convert yards to feet?

Algebra
m=8/9,(6,-4) I can get to the last step but my answer is always wrong what am i doing wrong

physics
The New River Gorge bridge in West Virginia is a 518 m long steel arch. How much will its length change between temperature extremes -19°C and 39°C? (answer in cm)

music appreation
Writing Assignment: What musical form preceded the sonata allegro form? This form is often considered dramatic and rewarding. In what way is this so and why? Refer to the listening examples to help make your point.

science help plzzz
how is building a skyscraper today simular to and different from the building of the pyramids

science
how is building a skyscraper today simular to and different from the building of the pyramids(anykind of pyrsmids) Thnx

antoyms
i cant figure them out in my head its hard plz help mee

antonyms
and the others cuz there hard 4 me

antonyms
my LA teacher gave me a sheet and it says complete the missin vowels Ex:htcld is hot/cold and I need help with some that are nncntglty,smthrh,gvtk,ltrght,pdwn,nt,srswt,tthn,nddrvr,ststnd,ldyng,crkdstrght,glybtl,lvht that's it!

Chemistry
Elemental calcium is produced by the electrolysis of molen CaCl2. What mass of calcium can be produced by this process if a current of 8500 A is applied for 39 h? Assume that the electrolytic cell is 65% efficient. I found the mass to equal 1.6 x10^5g Ca, and that is correct. ...

Chemistry
This was for online homework that was due tonight, and the answer is .43 kWh, but I'd still like to know how to get this answer. Thank you!!

Chemistry
Elemental calcium is produced by the electrolysis of molen CaCl2. What mass of calcium can be produced by this process if a current of 8500 A is applied for 39 h? Assume that the electrolytic cell is 65% efficient. I found the mass to equal 1.6 x10^5g Ca, and that is correct. ...

science
how much power, in watts, is needed to cut a lawn in 50 min if the work ivolvled is 100,000 j

science
Is holding a book while walking work? Why or why not ok

science
is holding a book while walking work? why or why not that is the question

science
is holding a book while walking work? why or why not

Chemistry
that doesn't make sense to me... can you give me a step by step walk through?

Chemistry
How many liters of hydrogen at STP can be produced by the reaction of 4.15 g of zinc with hydrochloric acid: Zn + 2HCl -> ZnCl2 + H2

algebra
ohhh i get it thanks!

algebra
i don't get it :( at all

algebra
can someone please tell me how to solve these, thanks! 1.2(3b-4)=8b-11 2.5(r-1)=2(r-4)-6 3.2y+3=3(y+7) 4.15x-10=-9x+2

human resources
What are the pros and cons of having a more diverse workforce? Is the United States in a better position to compete globally because of its diverse population

algebra
I do not entirely know why, but yes, it does happen with equations.

chemistry
They all have the same number (seven).

chemistry
122.66 mL (Height times area of the circle -- 12.5*1.25^2 -- 1.25 is the radius).

Geometry
Can I get help starting this exercise:- Let triangle ABC be such that AB is not congruent to AC. Let D be the point of intersection of the bisector of angle A and the perpendicular bisector of side BC. Let E, F, and G be the feet of the perpendicular dropped from D to line AB...

Math
I am a parent of a 10 year old, 5th grader and my hubby and I just can't figure these out to help her. Anyone?? Thanks in advance. 27 = 8k divide k = ?? 5a - 3a = 18 a = ?? 12r - 4r = 48 r = ?? g = 7(10-3) g = ?? These are finding the unknown number in each equation. ...

Math
Two students are talking after school: What is the average of your grades in Math for September? 4.6 That is impossible since the year just started. You could not possiblly have that many grades. What was the doubting student thinking of of the possible grades teachers give ...

Math
Many tires come with 13/32 inch of tread. The first 2/32 inch wears off quickly(say during the first 1000miles). From then on the tire wears uniformly. A tire is considerd "worn out" when on 2/32 inch of tread is left. a. how many 32nds of an inch of usuable tread ...

algebra
what are the three rules for expontents?

Science
14 letter word for "scientists do their experiments more than once so they can reduce the effects of chance errors. This is called conducting _________

3rd grade Math
Writing in Math - How can estimating help you add two-digit numbers?

physics
A small boat is headed a harbor 32km directly northwest of its current position when its suddenly engulfed in heavy fog. The captain maintain a compass bearing of northwest and a speed of 10km/h relative to the water.The fog lift 3.o h later and the captain notes that he is ...

3rd grade Math
Representations - Draw a number line. Make sure the following numbers are on your number line: 1,472; 1,560; 1,481. Are we over thinking this problem? Are they just looking for a number line with the above number listed from least to greatest?

french
how do you unscramble laigerne?

algebra
thank you, i also fixed the spelling!

algerbra
the problem is x+6-2x+9, how would i go about solving it a simpiler expression would be greatly apprciated1 the x's get me confused

socials
ok sorry about that i was just kinda annoyed

socials
i have one algerbra ? below

socials
not to be rude but this sara girl has gotten help on like 3 ? now and i'm waiting for someone to help me with mine i don't have all day to wait while this girl gets all her homework done

algerbra
i have to simply the expression 3x squared-10+4x+8-x squared, so far i have this 1x squared+4x-2 3x squared-1xsqaured+4x -10+8 2x squared+4x-2 i know its kinda confusing becasue i type sqaured so many time, am i on the right track?how do i find the answer now? i'm so ...

pre-calculus
An open box is to be made from a flat piece of material 18 inches long and 5 inches wide by cutting equal squares of length xfrom the corners and folding up the sides. Write the volume Vof the box as a function of x. Leave it as a product of factors, do not multiply out the ...

English
WHat is the climax of The Seems: the Glitch in Sleep?

anatomy/biology
what substance passes through a cell membrane using a solute pump?

gen 300
I think Ms. Sue is right to say what she said. The information he posted says that time management is an example of something he could use. Obviously, he has a problem managing his time or he wouldn't be looking for his answers online... or he has a problem concentrating, ...

algebra
(x+5)over 6= 1- (x+5) over 7 (x+5)/6= 1- (X+5)/7 I know you have to get a CD of 42 but I can't get the write answer.

axia
explain the difference account payable and trade credit

HCA270
how can using a bank cash management service reduce opportunity cost for a healthcare organization?

12th grade - English (World Mythology)
The website is: zarathushtra . com /z/gatha/dji/forward . htm What is Tagore’s main argument? Find a sentence or two that make up Tagore’s thesis statement and cite it here. What distinction does Tagore make between “blind obedience” and “the path of ...

General Chemistry
Thanks! I actually eventually got the right answer after about 45 gruelling minutes. But, mine is different than yours 3H2O + C2H5OH + %I3- ==> 15I- + CO2 + CHO2- + 11H+

General Chemistry
Im having trouble balancing this redox rection in acidic solution. I don't know how to balance reactions in which one reactant splits up into two products. C2H5OH(aq) + I3-(aq) --> I-(aq) + CO2(g) + CHO2-(aq) + H+(aq) I know I split it into C2H5OH --> CO2 + CHO2 + H...

chemistry
Thanks. I also have a similar question about cis and trans isomers.why is the heat of formation lower for a trans isomer? the only thing i could think of is that the dipole moment is 0.But does this have anything to do with the heats of formation?

chemistry
Why is there a difference in the heats of formation of CF4 and CCl4? I know that the bond length of CCl4(C--Cl) is longer than that of CF4(C--F), does this affect the heat of formation. Heat of formation are -225.709kcal/mol(CF4) and -28.120kcal/mol(CCl4).

Chemistry
If 0.110 mol of liquid H2O and 40.5 g of solid Al2S3 are reacted stoichiometrically according to the balanced equation, how many moles of solid Al(OH)3 are produced?

Chemistry
Thanks, i figured it out using the mol ratios of NaBr and Cl2.

Chemistry
If 0.720 mol of gaseous Cl2 and 390 mL of 0.641 M aqueous NaBr are reacted stoichiometrically according to the balanced equation, how many moles of gaseous Cl2 remain? Round your answer to 3 significant figures. 2NaBr(aq) + Cl2(g) → 2NaCl(aq) + Br2(l)

mangerial econ
The MorTex Company assembles garments entirely by hand even though a textile machine exists which can assemble garments faster than a human can. Workers cost $50 per day, and each additional laborer can produce 200 more units per day (the same for each additional worker). ...

6th grade english
thank u

6th grade english
What is another name for myth

Math
Thank you!

Math
I am working on 5th grade math...can you help with the following question? In a roll of 50 dimes, 8 were minted before 1983. What percent of the dimes in the roll were minted before 1983?

Chemistry
A weather ballon is prepared to lift off at the North Pole. The balloon is filled with 15000 L of helium gas. The conditions at the launch site are 760 mm Hg and 0 degrees celsius. The balloon is then released and rises to a height of 20,000 m. The atmospheric pressure ...

Finance
Dean and Jerry formed a partnership, agreeing to share profits and losses equally. Dean will receive a guaranteed payment of $48,000 per year. The partnership has $240,000 net income from operations for the year, before considering the guaranteed payment. What is Dean's ...

health care assignment help
Can you view a word document? I want to have my introduction paragraph checked.

PSY
How can masculine and feminine traits be described using the contimuum masculinity-femininity?

7th grade algebra
-3.5(2-3n)-2.5n

Economics
Depression

Math
if (a,b)=1 and a b=c^n, show that a and b are nth powers

physics
a 0.40kg ball is thrown vertically upward with a speed of 30m/s. The ball reaches a height of 40m. What is the energy dissipated due to air friction?... please help i don't know what to do:(

Psychology
Best way to describe biopsychology and its theoretical framework. Thanks

health
2000 word full sentence research paper on Autism controversies example.( mercury and vaccinations) an introduction and a thesis statement.A body of supporting evidence and in-text citations, a conclusion, a reference list at least 5 -7 sources. Does this help?

Math
A random variable X has a cumulative distribution fnc given by 0 for a<0 G(a)={a^2 for 0<=a<1 1 for a>=1 find the probability density function.

Data Management
Find the variance if X~N(0.02) and 95% of the data lies between -7 and 7.

History
What distinguishes an American from a European according to Hector St. John Crevecoeur? Why?

Math 115
If $9,000.00 is deposited into an account paying 4% interest compounded annually (at the end of each year), how much money is in the account after 5 years? (Round to the nearest cent.)

Math
how do you find relative error?

Math
Ryan estimates the measurement of the volume of a popcorn container to be 282 cubic inches. The actual volume of the popcorn container is 289 cubic inches. What is the relative error of ryan's measurement to the nearest thousandth?

physics
If a hair dryer is rated at 800W, how much energy does it require in 3 min?

physics
If an 80kg sprinter can accelerate from a standing start to a speed of 10 m/s in 3 s, what average power is generated?

physics
A 40 N block lifted straight upward by a hand applying a force of 40 N has an initial kinetic energy of 12J. If the block is lifted 0.5 m, how mauch work does the hand do? What is the block's final kinetic energy?

Psychology
What is the difference between absolute continuity and differential continuity? Search does not help as it deals with math not the psychology side. Thanks

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