Questions Asked on November 16, 2007

Which of the following has a standard enthalpy of formation value of zero at 25 degrees C and 1.0 atmA. Fe(s) B. Fe2O3(s) C.
1. 6 answers
2. asked by Chemistry
3. 6,778 views
Find the x and y coordinates of the center of gravity of a 4ft by 8ft uniform sheet of plywood with the upper right quadrant
1. 1 answer
2. asked by natali
3. 3,456 views
Find two consecutive numbers such that the difference of their reciprocals is 1/4 the reciprocal of the small number.
1. 1 answer
2. asked by Courtney
3. 3,013 views
find the measure of an angle if the sum of the measures of its complement and supplement is 162 degrees.
1. 3 answers
2. asked by keon
3. 2,559 views
Solve the following problem taken from Treviso Arithmetic, a math textbook published in 1478 by an unknown Italian author:A man
1. 8 answers
2. asked by Josh
3. 2,459 views
Calculate the mass of nitrogen present in a volume of 3000 cm^3 if the temperature of the gas is 22 degrees Celsius and the
1. 2 answers
2. asked by Jen
3. 2,420 views
The speed of propagation of a sound wave in air at 27 degrees Celsius is about 350 m/s. Calculate, for comparison, v_rms for
1. 2 answers
2. asked by Jen
3. 2,385 views
To protect their crops during freezing temperatures, orage growers spray water onto the trees and allow it to freeze. In terms
1. 2 answers
2. asked by Judd
3. 2,201 views
If a2 + b2 = 15 and ab = 3, then the value of (a-b)2 is:A. 21 B. 18 C. 12 D. 9 E. 3 I really don't understand how I could
1. 3 answers
2. asked by Lucille
3. 2,032 views
What is the probability of rolling at least one 6 with four rolls of a fair die?
1. 3 answers
2. asked by A
3. 1,806 views
someone help me with this questions please1. How would the following costs be classified (product or period) under variable
1. 5 answers
2. asked by matt
3. 1,678 views
Show that the sum of the squares of any five consecutive integers is divisible by 5.I think I should do something with
1. 5 answers
2. asked by anonymous
3. 1,522 views
Solutions to th rhymes below are made up of one possessive noun and one plural noun:spectacles for a young lady. tales of a boy
1. 8 answers
2. asked by Anonymous
3. 1,457 views
Although a mass on the end of a string can be whirled around in a horizontal circle, (plane of the mass is horizontal), is it
1. 2 answers
2. asked by Hannah
3. 1,444 views
a 2.747g sample of manganese metal is reacted with excess HCl gas to produce 3.24L of H2 at 366K and .927atm and a manganese
1. 4 answers
2. asked by mel
3. 1,325 views
places of education for silly people.small parts of wild plants. head coverings for small insects.
1. 7 answers
2. asked by Anonymous
3. 1,297 views
i have a few questionscosx + cosx =2secx ----- ----- 1+sinx 1-sinx cos(x-B)-cos(x-B) = 2sinxsinB csc2x= 1 secx cscx --- 2 cotx=
1. 4 answers
2. asked by jessika
3. 1,258 views
problems about angles:Hi. I needed help on some problems for the math section that we are doing in class. I am trying out some
1. 6 answers
2. asked by jason
3. 1,257 views
I need help on my essay outline.How could I break down my sub-topic: personal expression into two using the following points;
1. 5 answers
2. asked by Anonymous
3. 1,209 views
is a formate ion (HCOO-) an acid or a base?how would you know?
1. 1 answer
2. asked by mark
3. 1,193 views
C6H12O6(aq)->2 C2H5OH(aq) + 2CO2(g)Fermentation of 744mL grape juice(density=1.0 g/cm^3) is allowed to take place in a bottle
1. 2 answers
2. asked by mel
3. 1,095 views
The amount of heat required to raise temperature of 55.85 g of iron 1 degrees C is called itsA. Change of energy B. Enthalpy C.
1. 1 answer
2. asked by Chemistry
3. 1,088 views
a 13.5L tank is filled with H2 to a pressure of 2x10^2atm. How many balloons (each 2L) can be inflated to a pressure of 1 atm
1. 1 answer
2. asked by mel
3. 1,087 views
A 20.0 kg cart is moving with a velocity of 7.30 m/s down a level hallway. A constant force of -11.0 N acts on the cart and its
1. 1 answer
2. asked by Einstein
3. 1,031 views
who was the female that recoppied the declaration of independance(she didn't write it but rewrote it after thomas jefferson had
1. 1 answer
2. asked by Jamie
3. 1,027 views
Who criticized Abbot Suger's elaborate design for St. Denis? I cannot find anything about it.
1. 2 answers
2. asked by Tabby
3. 1,003 views
What is the probability of rolling at least one double-6 with 24 rolls of two fair dice?
1. 4 answers
2. asked by A
3. 998 views
An experimental train has a mass of 1.70e4 kg and is powered across a level track by a jet engine that produces a thrust of
1. 1 answer
2. asked by Einstein
3. 987 views
consider separate 1Lsamples of He and UF6 both at 1 atm and containing the same number of moles. what ratio of temps for the two
1. 2 answers
2. asked by mel
3. 955 views
consider racial imbalances in education, the economy, family life, housing, criminal justice, health care and politics. Of these
1. 4 answers
2. asked by Sandra
3. 936 views
The degree measures of two angles of a triangle are consecutive even integers. If the measure of the third angle is 50 degrees
1. 1 answer
2. asked by Jason
3. 919 views
given the reaction -Fe(s)+H2SO4(aq)->FeSO4(aq) + H2(g) the volume of the balloon was 4400m^3 and the loss of hydrogen gas during
1. 1 answer
2. asked by mel
3. 887 views
Is this order correct for the accouting cycle:1. Analyzing transactions and events 2. Journalizing transactions and events 3.
1. 2 answers
2. asked by student acc
3. 831 views
A harmonic wave is traveling along a rope. The oscillator that generates the wave completes 40.0 vibrations in 27.0 s. A given
1. 3 answers
2. asked by Taryn
3. 830 views
The specific heat of water is at 4.184J/g * degree C. How much heat is evolved, or absorbed, when the temperature of 9.00 mol of
1. 5 answers
2. asked by Chemistry
3. 827 views
To function, ecosystems require an input of energy. Where does this energy come from?
1. 5 answers
2. asked by dawn
3. 819 views
Give a copy of Appendix D to a friend or family member and ask that person to completethe table contained therein. In doing so,
1. 17 answers
2. asked by Trish
3. 817 views
At 298K, Go = -67.4 kJ for the reactionCO + Cl2 --> CoCl2 Calculate the change in Gibbs free energy (in kJ) at the same
1. 4 answers
2. asked by Mike
3. 767 views
I have these questions on my assignment, so would you please check my answers? (Thank you)1.Which one of the following aspects
1. 2 answers
2. asked by Anonymous
3. 762 views
75L stainless steel container was charged with 3 atm of hydrogen gas and 4 atm of oxygen gas. a spark ignited the misture,
1. 2 answers
2. asked by mel
3. 757 views
Posted by Anonymous on Thursday, November 15, 2007 at 8:05pm.I need help on my essay outline. How could I break down my
1. 1 answer
2. asked by Anonymous
3. 741 views
Can some one read my lab report for me...I have it almost finished.. I just need help on the discussion part Please
1. 17 answers
2. asked by Chemistry
3. 724 views
An archer puts a 0.28 kg arrow to the bow string. An average force of 200 N is exerted to draw the sting back 1.1 m. a) Assuming
1. 1 answer
2. asked by Einstein
3. 711 views
I had to work on the income statement, the balance sheet and the statement of Owner's equity. Now I am on the statement of cash
1. 0 answers
2. asked by Heidi
3. 699 views
how would you calculate the bond energy of 2h2o2?
1. 2 answers
2. asked by sara
3. 696 views
Question complete the diagram below by using arrows, words and or numbers to show how properties of te helements vary across a
1. 1 answer
2. asked by sam
3. 691 views
Please check my French work:Les parents nous ont nourris à travers nos vies. Pendant que nous grandissons en haut du, les
1. 2 answers
2. asked by Alex
3. 680 views
A copper calorimeter can with mass .100 kg contains .160 kg of water and .018 kg of ice in thermal equilibrium at atmospheric
1. 1 answer
2. asked by Jen
3. 678 views
can someone check my answersapproximately 4 out of 10 students at sonia's college lives on campaus. the college has 3,000
1. 1 answer
2. asked by keauanna
3. 667 views
hydrogen is being pumped into a spherical balloon at the rate of 250 cubic inches per minute. in a and b, you must provide an
1. 1 answer
2. asked by beckii
3. 665 views
How are food chains important in biogeochemical cycles?
1. 1 answer
2. asked by dawn
3. 658 views
How do you parse the verb 'deciden'Thanks
1. 4 answers
2. asked by Cam
3. 650 views
Plan an interview for a job you would like to have,how to manage the resume,job application,follow u p ltter and
1. 1 answer
2. asked by anaya
3. 642 views
What effect do isotopes of a given element have on the atomic mass calculated for that element?
1. 1 answer
2. asked by Lisa
3. 642 views
I have an assignment where I have to create a birthday list. One of the tasks is to add a countdown til someone's birthday, I
1. 4 answers
2. asked by Amanda
3. 636 views
Factor completely.36a^3b^2+66a^2b^3-210ab^4 Is this correct? 6ab^2(6a^2+11ab-35b^2)
1. 2 answers
2. asked by Katie
3. 629 views
Volume of stock solutiona. 5.0mL b.10.0mL c.15.0mL d.20.0mL Prepare 25mL of each of the four different dilute solution
1. 6 answers
2. asked by Aman
3. 629 views
I need help with this question:Children will generally select equipment based on : A) their prior success with the equipment. B)
1. 2 answers
2. asked by Anonymous
3. 627 views
Find the grams of NaF added to 300ml of .2M HF to create a buffer with pH=3.5.
1. 6 answers
2. asked by corey
3. 623 views
Could Somebody please help me to understand truth tables, boolean expression, and von neumann architecture? Just an explanation
1. 1 answer
2. asked by Ti
3. 617 views
ahhh im confused!!Calculate the pH of a solution formed by mixing 372 mL of a solution containing 4.4 x 10-6 M NaOH with 286 mL
1. 1 answer
2. asked by mark
3. 616 views
Who criticized Abbot Suger's elaborate design for St. Denis?
1. 0 answers
2. asked by Tabby
3. 609 views
If a graph is given for a cuvette using a 1.00 cm , predict the graph if a 2.0 cm diameter test tube and a 0.50cm test tube are
1. 1 answer
2. asked by Zara
3. 607 views
I'm having a rough time understanding this assignment. Can someone explain it to me in a way that I might be able to understand
1. 1 answer
2. asked by Kelly
3. 600 views
thanks for the last help, i got the right answer!!i got this wrong... (answer is supposed to be 0.165 but i put 0.0652) A sample
1. 1 answer
2. asked by mark
3. 597 views
Which is the least challenging elementof movement? shape,time,flow, or space? Isn't space the least challenging?
1. 1 answer
2. asked by Anonymous
3. 594 views
How would I prepare 25mL each of the dilute solutions of 5mL, 10mL and 20mL and is it possible to dilute it too much?
1. 1 answer
2. asked by Aman
3. 594 views
how do you convert joules to kilojoules?example: 2240.48 joules 3887.4 joules 13.85 joules
1. 3 answers
2. asked by Rebekah
3. 593 views
How can separate 1L samples of O2 and H2 have the same average velocity/
1. 1 answer
2. asked by mel
3. 593 views
Given the following information, calculate the return on equity for Chaus, Inc.Return on sales = 5% Total asset turnover = 2
1. 1 answer
2. asked by Adriana
3. 580 views
Do I have this right?Jane or Tom will wake up Tanner this evening. Compound: Yes Conditional: Yes Antecedent: Jane or Tom
1. 4 answers
2. asked by Diane
3. 578 views
5/8 - 1/4
1. 1 answer
2. asked by cassidy
3. 576 views
Could Somebody please help me to understand truth tables, boolean expression, and von neumann architecture? Just an explanation
1. 3 answers
2. asked by Ti
3. 569 views
what mummy shaped figures were used in the afterlife's fields for the mummy
1. 0 answers
2. asked by emily
3. 568 views
I know the Chartes Cathedral is an example of the "High Gothic" style, but how is it not an example?
1. 0 answers
2. asked by Tabby
3. 561 views
I need to have these words define Souland Phenomenology . the definition needs to relate to religious terms.
1. 2 answers
2. asked by dawn
3. 557 views
I have to write a paper for my bio class and the teacher is giving us alot of freedom on it.Its a research paper on many topics
1. 1 answer
2. asked by abby
3. 556 views
sorry but on the last question i posted the wrong equation...(3x^2-8x+1)(-2x^2+x-2) I have heard of the FOIL process but i still
1. 4 answers
2. asked by nicole
3. 548 views
Was Michelangelo famous for architecture and sculpture? I know he was famous for his paintings.
1. 1 answer
2. asked by Tabby
3. 546 views
What is the technique called that creates a hazy image?
1. 1 answer
2. asked by Tabby
3. 531 views
An aluminum cube .100 m on a side is heated from 10 degrees Celsius to 50 degrees Celsius. What is the change in its density?
1. 1 answer
2. asked by Jen
3. 527 views
(3xsquared-8x+1)(-2xsquared+-2)(i wrotee squared because i don't know how to type an exponent) Please help me to understand the
1. 1 answer
2. asked by nicole
3. 524 views
Tous les jours means everyday and tout le monde means everybody, so does that mean tous and tout both mean every? How could I
1. 1 answer
2. asked by Miche
3. 516 views
Which government oficials reveive appointments for life?President senators federal judges representatives?
1. 1 answer
2. asked by Billy
3. 516 views
using the van der Waals equation calculate the pressur exterted by .5160 mol N2 in a 1L container at 24.6C
1. 3 answers
2. asked by mel
3. 513 views
How would you factor this problem? I keep getting stuck.x^2+2xy+2x+y^2+2y-8
1. 3 answers
2. asked by Katie
3. 507 views
How did artistic advancement advance the humanist movement? I have no idea.
1. 0 answers
2. asked by Tabby
3. 502 views
What are the ironies in the novel?
1. 0 answers
2. asked by Anonymous
3. 502 views
compund containing only C, H, and N yeilds the following data-1. complete combustion of 34.3 mg of the compund producedmg of CO2
1. 1 answer
2. asked by mel
3. 498 views
do you know abut northwest indians?Like what langunage did they speak?Or what were the ways of life?
1. 1 answer
2. asked by Rosalina Lam
3. 495 views
A strawman is when someone makes a claim,or refute by putting words in someones mouth.Please help I need an example sentence
1. 1 answer
2. asked by Diane
3. 494 views
what were ancient egyptian mask made of?
1. 1 answer
2. asked by cami
3. 491 views
Is BrCl3 octahedral?
1. 1 answer
2. asked by Anonymous
3. 483 views
What are the top ten considerations for developing an integrated information management system for a human services
1. 1 answer
2. asked by Michelle
3. 481 views
what substance did they use to stuff the nosrtils with
1. 1 answer
2. asked by Anonymous
3. 481 views
what feeling goes with flowers?
1. 0 answers
2. asked by eman
3. 473 views
I need help with this one,I'm not sure what to do.Suzy will pass critical thinking only if she begins to study. Compound: No
1. 2 answers
2. asked by Diane
3. 464 views
How was artistic advancement able to advance the humanistic movement?
1. 1 answer
2. asked by Tabby
3. 462 views
what substance was used to stuff the nostrils?
1. 3 answers
2. asked by silvia
3. 457 views
what are the two main forms of energy that power living systems?
1. 1 answer
2. asked by kendarious
3. 449 views

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