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Questions Asked on October 20, 2007

The isotopes of argon have the following relative abundances:Ar-36 0.34% Ar-38 0.06% Ar-40 99.66% Estimate the average atomic
1. 2 answers
2. asked by Marty
3. 2,442 views
Suppose the probability that a construction company will be awarded certain contract is .25, the probability that it will be
1. 3 answers
2. asked by crissy
3. 2,403 views
A hydrated MgSO4 salt, weighing 3.211g, is heated in a crucible until reaching a constant weight. The weight of the anhydrous
1. 5 answers
2. asked by Marty
3. 2,080 views
What is the lewis dot structure for Fluoride, F1- and Mg2???
1. 2 answers
2. asked by lucy
3. 2,023 views
If 90% of the households in a certain region have an answering machines and 50% have both answering machines and call waiting,
1. 3 answers
2. asked by anonymous
3. 1,932 views
How many atoms of C are contained in 45.6g of C6H6?
1. 3 answers
2. asked by Marty
3. 1,699 views
Convert each quantity to an amount in moles:a) 4.27 x 10^21 atoms of He b) 7.39 x 10^23 molecules of ICl
1. 1 answer
2. asked by Marty
3. 1,626 views
in 5 seconds, a car moving in a straight line increases it's speed from 50km/h to 65km/h, while a truck goes from rest to 15km/h
1. 2 answers
2. asked by Drew
3. 1,623 views
If 0.1 ml of serum, 5ml of reagent, and 4.9 mL of distilled water are mixed together what is the dilution of the serum in the
1. 3 answers
2. asked by v l
3. 1,528 views
Sulfuric acid dissolves aluminum metal according to the following reaction:2Al(s) + 3H2SO4(aq) -> Al2(SO4)3(aq) + 3H2(g) Suppose
1. 1 answer
2. asked by leo
3. 1,401 views
Express each quantity as a mass in grams.a) 3.70mol of H2O b) 8.43 x 10^23 molecules of PbO2
1. 1 answer
2. asked by Marty
3. 1,313 views
The common ratio r of a geometric sequence satisfies the quadratic equation 2r squared - 3r -2 = 0. If the sum to infinity of
1. 2 answers
2. asked by jen
3. 1,279 views
What aspects of european society did the church dominate from 1100 to 1300?
1. 1 answer
2. asked by Joshua
3. 1,145 views
Aluminum reacts with sulfuric acid, which is the acid in automobile batteries. If 20.0 grams of Al is placed into a solution
1. 1 answer
2. asked by lucy
3. 1,101 views
In writing a fictional story, is first person me, myself, I? what other first person words can we use for the story?
1. 4 answers
2. asked by Trish
3. 1,088 views
i am doing a bio on walt disney and am making a power point presentation. i am new to P.P., and i need some help.how can i get
1. 1 answer
2. asked by anonymous
3. 1,045 views
I'm having problems coming up with a thesis statement for Edgar Allen Poe's poem The Raven. I have to do an analysis paper. Any
1. 3 answers
2. asked by ABC
3. 1,036 views
what would be the definition for the words problem, policy, and programs for health and human services? would you say problems..
1. 2 answers
2. asked by alley
3. 1,028 views
why is it that an object can accelerate while travelling at constant speed but not at constant velocity?
1. 1 answer
2. asked by Drew
3. 846 views
if y varies directly as x find the direct variation equation for the situation:y=20 and x=16
1. 1 answer
2. asked by George
3. 826 views
What are the advantages and disadvantages of "Open Market Operations" controlled by U.S. central bank?
1. 1 answer
2. asked by Sharp
3. 797 views
For each of the following acid-base reactions, calculate the mass (in grams) of each acid necessary to completely react with and
1. 4 answers
2. asked by leo
3. 749 views
light travells in a straight line at a constant speed of 300,000 km/sec. what is the light's acceleration?
1. 2 answers
2. asked by Drew
3. 730 views
A person stands 4.2 m in front of a wall that is covered floor-to-ceiling with a plane mirror. His eyes are 1.9 m above the
1. 1 answer
2. asked by Mary
3. 694 views
Was pope gregory justified in excommunicating Henry? explain?
1. 0 answers
2. asked by Joshua
3. 663 views
a 3262 kg car starts from rest at the top of a 5m long driveway that is sloped at 20 degrees with the horizontal. If an average
1. 1 answer
2. asked by Mary
3. 663 views
Molecules would move the fastest whenA.the temperature is increased B.the molecule is bigger C.the energy is decreased d.the
1. 1 answer
2. asked by Cierra
3. 627 views
Explain advantages/disadvantages of "The Discount Rate" offered by U.S. central bank?
1. 0 answers
2. asked by Ant
3. 617 views
A company had 120,000 shares of common stock outstanding on January 1 and then sold 40,000 additional shares on March 30. Net
1. 1 answer
2. asked by James
3. 614 views
What is the difference between premier and premiere? Is it depend on masculine and feminine of the noun? How about deuxieme, is
1. 1 answer
2. asked by Miche
3. 613 views
I want to make a song with the theme of "Planet Earth", although I'm not good at singing, so I'm just looking for a beat song.
1. 3 answers
2. asked by Wenmar
3. 571 views
What was Jackson's view of the presidency?
1. 1 answer
2. asked by Ciara
3. 543 views
Every word in a poem is supposed to have meaning, but what does Chelsea, Massachusetts have to do with the poem? I know the word
1. 2 answers
2. asked by Debra
3. 538 views
a 12V , 3A motor takes 120 minutes to do a certain job. a 120V, 8A motor takes 5 minutes to do the same job. Which motor uses
1. 2 answers
2. asked by Anonymous
3. 518 views
Given f(x)= 4x^2=9x+2 and g(x)=3x-2, find and simplify the following:(f+g)(x) (fg)(x) (f-g)(3) I have a few other problems i
1. 2 answers
2. asked by eric
3. 502 views
I have to do an oral presentation on:Martyrs: Father Teodoro Santo Mejia & Father Victor Acuna Cardenas, Peru. I can not find
1. 2 answers
2. asked by Michael
3. 501 views
dy/dx= (2x-2xy)/(x^2+2y)Find all points on the curve where x=2. Show there is a horizontal tangent to the curve at one of those
1. 0 answers
2. asked by sara
3. 500 views
In which work did Aegisthus kill Atreus? I think it's "House of Atreus" by Aeschylus but I'm not sure exactly what that is. Is
1. 1 answer
2. asked by Anon
3. 500 views
How does the hierachy of the catholic church compare to the hierachy of feudal society in western europe?
1. 0 answers
2. asked by Joshua
3. 484 views
Which of the following is a compound?a.Nylon b.Hydrogen c.Iron d.Air
1. 1 answer
2. asked by Cierra
3. 477 views
How did imperialism affect both the colony and the colonizer? if u know the site where the answer can be found plz list it here
1. 2 answers
2. asked by roy
3. 475 views
What was the function of the egyptian funerary complex?
1. 1 answer
2. asked by Lance
3. 471 views
Ive got this equation system{x+y= 0 {x^2 + y^2 = sqrt(125) how do I solve it
1. 1 answer
2. asked by lalith
3. 470 views
add, express answer in simplest form4x/x^2-18x+72 + 4/x-6
1. 3 answers
2. asked by Mary
3. 470 views
how multicultural language effects society and peoples daily lives?
1. 3 answers
2. asked by sadi
3. 460 views
I need help analyzing the atlantic slavetrade.
1. 1 answer
2. asked by Key-Key
3. 453 views
What is excommunication? what role did it play in the struggle between popes and kings?
1. 1 answer
2. asked by Joshua
3. 439 views
If sqrt(x/y)+sqrt(y/x)=6, find dy/dx?
1. 1 answer
2. asked by aksha
3. 432 views
Why is the loyalist mad at the patriots?
1. 1 answer
2. asked by Natalie
3. 423 views
How do i graph the polynomial function of:f(x)= (x+3)(x+1)(x-2) squared
1. 1 answer
2. asked by eric
3. 415 views
What are some phrases similar to "Case in point"?Thank you very much.
1. 1 answer
2. asked by Jacob
3. 412 views
Hi, I need help finding a data of women's pay over the year. Is there a website you could point me to? THanks!
1. 1 answer
2. asked by kelly
3. 348 views

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