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2010
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Questions Asked on March 18, 2010

The vapor pressures of ethanol (C2H5OH) and 1-propanol (C3H7OH) are 100 mmHg and 37.6 mmHg, respectively. Assume ideal behavior
1. 9 answers
2. asked by Arnold
3. 7,330 views
The density of an aqueous solution containing 10% of ethanol (C2H5OH) by mass is 0.984 g/ml.A) Calculate the molality of this
1. 2 answers
2. asked by Hilavidpreet
3. 7,031 views
For the past 20 years, the high temperature on April 15th has averaged µ = 62 degrees with a standard deviation of σ = 4. Last
1. 5 answers
2. asked by Alica
3. 4,775 views
A tree casts a 25 foot shadow. At the same time of day, a 6 foot man standing near the tree casts a 9 foot shadow. What is the
1. 17 answers
2. asked by boom
3. 4,751 views
How could you tell whether a white powder you have is sodium bicarbonate or sodium phosphate?
1. 2 answers
2. asked by KEISHA
3. 3,408 views
Calculate how many joules of (total) heat energy are needed to convert the ice at -25.0 *C to steam at 100.0 *C?
1. 2 answers
2. asked by secret XD
3. 3,055 views
what magic trick does Mr. Utterbunk perform every evening?
1. 14 answers
2. asked by fonzy
3. 3,036 views
5.Sarita's party takes place at night and all the villagers are gathered there. How do these details help make the party a good
1. 15 answers
2. asked by Leah
3. 2,796 views
In a normal distribution, what z-score value separates the highest 90% of the scores from the rest of the distribution?a)z =
1. 1 answer
2. asked by Alica
3. 2,636 views
"The osmotic pressure of a saturated solution of strontium sulfate at 25C is 21 torr. What is the solubility product of this
1. 1 answer
2. asked by Kiki
3. 2,303 views
The weak base-conjugate acid buffer used in this laboratory consists of a weak base ammonia, NH3, and its conjugate acid
1. 1 answer
2. asked by E
3. 2,126 views
How many vertices do the hexagonal prism have?
1. 1 answer
2. asked by Makayla
3. 1,804 views
A velocity of 30 mph is resolved into two components, each of which makes an angle of 45 degrees with it. Find their magnitude.
1. 1 answer
2. asked by danders
3. 1,727 views
A chemist heated a sample of steel wool in a burner flame exposed to oxygen in the air. He also heated a sample of steel wool in
1. 1 answer
2. asked by Anonymous
3. 1,692 views
Which of the following statements is FALSE:A) Individual investors should be involved in choosing a mutual fund because they
1. 2 answers
2. asked by vedrana
3. 1,687 views
The angle of elevation of the top of a tower to point A on the ground is 61 degrees. At point B it is 600 feet farther from the
1. 3 answers
2. asked by berriengk
3. 1,633 views
The line L1 has the equation y=3x. The line L2 is perpendicular to L1 and passes through the point P(0,0). Write an equation of
1. 1 answer
2. asked by Anonymous
3. 1,608 views
If the yield from the reaction of acetic acid with isopentyl alcohol is 45% how many grams of isopentyl acetate are formed from
1. 1 answer
2. asked by Zach
3. 1,462 views
At what temperature would a 1.05m NaCl solution freeze, given that the van't Hoff factor for NaCl is 1.9? Kf for water is 1.86
1. 3 answers
2. asked by ChemChem
3. 1,432 views
How can NH3 be a ligand but NH4+ is not a ligand??
1. 1 answer
2. asked by Marta
3. 1,396 views
The reaction Co(H2O)6^+2 + 4Cl- <==> CoCl^-2 + 6H2O is at equilibrium. The right side is pink and the left side is blue. 1. What
1. 0 answers
2. asked by Heather
3. 1,329 views
write a step-by-stepmechanism for the reaction of 1-butanol with sodium bromide and sulfuric acid.
1. 0 answers
2. asked by Brianna
3. 1,319 views
20. When the blood enters the gill filaments in a fish, its carbon dioxide content is ________ and oxygen content is _____a.
1. 1 answer
2. asked by mysterychicken
3. 1,295 views
Two air-track carts move toward one another on an air track. Cart 1 has a mass of 0.34 kg and a speed of 1.1 m/s . Cart 2 has a
1. 1 answer
2. asked by Kyle
3. 1,262 views
A vessel sails 32 miles S 45 degrees E. How far south has it sailed?The wording of it confuses me.
1. 2 answers
2. asked by berriengk
3. 1,226 views
Evidence suggests that there are trillions of dollars' worth of minerals and metals buried in Near Earth Asteroids (the ones
1. 1 answer
2. asked by Jeff
3. 1,219 views
A sample of benzene, C6H6, weighing 3.51 g was burned in an excess of oxygen in a bomb calorimeter. The temperature of the
1. 1 answer
2. asked by Marie
3. 1,200 views
Express each statement using an inequality involving absolute value.Do not solve.1.The majority of grades in Sean's English
1. 4 answers
2. asked by Shadow
3. 1,154 views
37. Wings, fins, and arms are limb adaptations that allow mammals toa. live in different environments b. attain diverse sizes c.
1. 2 answers
2. asked by mysterychicken
3. 1,148 views
Two air-track carts move toward one another on an air track. Cart 1 has a mass of 0.34 kg and a speed of 1.1 m/s . Cart 2 has a
1. 1 answer
2. asked by Kyle
3. 1,140 views
A spacecraft in the shape of a long cylinder has a length of 100 m, and its mass with occupants is 1660 kg. It has strayed too
1. 2 answers
2. asked by Rick
3. 1,120 views
Factor y2 + 10z - 10y - yz.
1. 2 answers
2. asked by mina
3. 1,080 views
If you roll a die 38 times and 12 of the rolls result in a "5," what empirical probability was observed for the event "5"?
1. 2 answers
2. asked by Alica
3. 1,061 views
21. Discuss in an essay the various factors that are considered in design analysis.There are various factors that are considered
1. 1 answer
2. asked by y912f
3. 1,033 views
how do I do this?28 students collected 12,374 soda can tabs. If some of the students collected one more tab than the rest of the
1. 1 answer
2. asked by Cory
3. 1,014 views
Mr. Gray was able to cut twelve 3-foot pieces of wood from a board without wasting any part of the board. What is the largest
1. 2 answers
2. asked by sam
3. 1,002 views
use the sum and difference identities to find the cosine anglecos pi/9 cos pi/3 - sin pi/9 sin pi/3 I do not know how to solve
1. 1 answer
2. asked by Hannah
3. 988 views
Thank you very much for your last corrections. Can you please let me know if the following statements are correct?1)Briefly
1. 1 answer
2. asked by Franco
3. 984 views
determine the number of electrons required to deposit 6.4g of copper from an aqueous solution of copper II sulphate
1. 2 answers
2. asked by kaye
3. 974 views
i need to write a process paragraph about how yeast causes bread to rise.i was wondering if this was good. Yeast is the
1. 3 answers
2. asked by deborah
3. 959 views
I NEED help on the following problem can some one help me please and thanks5x-y+z= 8 2x+2y-3z= 28 x-3y+2z= -15
1. 1 answer
2. asked by MAYA
3. 948 views
37. Wings, fins, and arms are limb adaptations that allow mammals toa. live in different environments b. attain diverse sizes c.
1. 0 answers
2. asked by mysterychicken
3. 944 views
1. Shine a light on/at/in the back of the sheet.2. Shine a light in back of the sheet. (Which prepositions do we have to use?)
1. 1 answer
2. asked by rfvv
3. 940 views
Does anyone know any good quotes about Jordan Baker and Myrtle Wilson in the Great Gatsby.I only have about 7: "Daisy and Jordan
1. 0 answers
2. asked by Linea
3. 920 views
The NCAA men's basketball season starts with 327 college teams all dreaming of making it to "the big dance" and attaining the
1. 3 answers
2. asked by Alica
3. 906 views
need a thesis statement about horror movies
1. 1 answer
2. asked by debbie
3. 870 views
I only have one question on this script that I need help on. This script is different and is called NO SMOKING by jacinto
1. 11 answers
2. asked by Sara
3. 864 views
Lines J and N are perpendicular. The slope of line J is 5. What is the slope of line N?
1. 1 answer
2. asked by Anonymous
3. 861 views
Is this a good thesis statement about horror movies. Compare today's horror film violence with the classic horror films of the
1. 2 answers
2. asked by debbie
3. 848 views
northwest florida indian tribe
1. 1 answer
2. asked by Andrea
3. 816 views
„Ï Discuss how participation contracts represent financial opportunities for providers. Whatare positive and negative
1. 3 answers
2. asked by Anonymous
3. 799 views
2nd derivative of3t^2 Cos(4t)
1. 1 answer
2. asked by Anonymous
3. 788 views
For my history class I need to identify these terms but do not know where I can find more info about them to make my answer a
1. 2 answers
2. asked by Rose
3. 722 views
I am not sure about this problemFind four large cities around the world and an approximate percentage rate of population growth
1. 1 answer
2. asked by Kirk
3. 713 views
How could you recover sucrose or sodium chloride once it has dissolved in water?
1. 2 answers
2. asked by Anonymous
3. 712 views
SUPPOSE YOU BUY 1 TICKET FOR $1 OUT OF A LOTTERY OF 3000 TICKETS. IF THE PRIZE FOR THE ONE WINNING TICKET IS TO BE $500, WHAT
1. 1 answer
2. asked by Q
3. 692 views
I need help paraphrazing a section from Robert Browning's poem "My Last Duchess"here it is : Fra Pandolf chanced to say "Her
1. 2 answers
2. asked by Brittany
3. 688 views
I know this is alot to ask but could someone please check to see if I did this right and help me with the transformation. I was
1. 1 answer
2. asked by Karrie
3. 678 views
Express each statement using an inequality involving absolute value.Do not solve.1.The majority of grades in Sean's English
1. 1 answer
2. asked by Shadow
3. 675 views
What does this quote mean?"We forgive those who bore us, but never those whom we bore."
1. 2 answers
2. asked by Sara
3. 674 views
I think these I know how to do ....just want someone to check..still sorta mixed up on the first question. ThanxFor the
1. 2 answers
2. asked by Mark
3. 671 views
how do i find the amplitude, period, phase shift of y=2 cos(-4t-(-4 pi/3))
1. 1 answer
2. asked by Josh
3. 665 views
URGENT: If 2.24g of salicylic acid is reacted with 61mL methanol, what is the maximum mass of product that could be formed? The
1. 2 answers
2. asked by Lee
3. 663 views
consider two plants with genotypes Rrtt and rrTt where red color is(R) is domiant over white(r) and being tall(T) is dominat
1. 2 answers
2. asked by lulo
3. 659 views
A child's coin bank contains $2.58 in pennies and nickels. If the number of pennies is 36 less than 2 times the number of
1. 1 answer
2. asked by Natatlie
3. 659 views
1. System A consists of a single ring with 100 stations, one per repeater. System B consists of four 25 stations rings linked by
1. 1 answer
2. asked by Ramie
3. 656 views
"Part A: Most of the transition metals form brightly colored ionic substances. Which elements located in the first row
1. 0 answers
2. asked by Marta
3. 654 views
Find the displacement vector from the point(0,3-1) to the point (-2,6,4)give your answer in i,j,k notation,also give the
1. 2 answers
2. asked by Chigs
3. 650 views
What is the generic reaction equation for the Maillard reaction?Please help ^_^
1. 1 answer
2. asked by Ayla
3. 643 views
Can some one please help me with this question. It is for an art class, and im having trouble with this paper. I don't
1. 2 answers
2. asked by jen
3. 642 views
there are two 1's,two 2's,and two 3's.There is one digit between the two 1's, there are two digits between the two 2's, and
1. 2 answers
2. asked by CeCe
3. 639 views
how would i do this quadratic word problemA local daycare centre charges $65 per day to care for a child. The daycare currently
1. 2 answers
2. asked by jake
3. 637 views
How do I dertermine the measure of theta for the equation 4cos theta - sqrt 12 = 0. My answer was 2pi/3,4pi/3 I'm told it's
1. 1 answer
2. asked by jamie
3. 637 views
in order to achieve from aerobic exercise, one should maintain one's heart rate at a certain level. A fourty year old women with
1. 2 answers
2. asked by kendra
3. 637 views
37. Wings, fins, and arms are limb adaptations that allow mammals toa. live in different environments b. attain diverse sizes c.
1. 1 answer
2. asked by mysterychicken
3. 613 views
Two speakers are driven by the same oscillator with frequency of 140 Hz. They are located 4.00 m apart on a vertical pole. A man
1. 1 answer
2. asked by leigh
3. 613 views
List three federal government strategies for uniting citizens and gaining citizens support for World War I
1. 1 answer
2. asked by Anonymous
3. 606 views
Recombination frequenciesa. arise from completely random genetic exchange. b. are the same for all genes. c. decrease with
1. 1 answer
2. asked by Sonya
3. 600 views
A Boeing 747 jet is approximately 230 ft. long and has awingspan of 195 ft. If a scale model of the plane is about 40 cm long,
1. 1 answer
2. asked by Kirk
3. 578 views
to how much water should 50.0 ml of 12.0 M HCl acid to be added to produce a 4.00 M solution?
1. 1 answer
2. asked by vik
3. 576 views
Post a 200- to 300-word response to the following: Discuss an environmental problem that is significant. What are some causes?
1. 1 answer
2. asked by Anonymous
3. 575 views
I am stumped!!! quadratic equationsolve for x: xsq+16x+4=0 please show the steps
1. 2 answers
2. asked by Terri
3. 571 views
I'm having a hard time with Redox and how to figure out which is redoxSelect all of the reactions that are redox reactions. I)
1. 0 answers
2. asked by Mark
3. 571 views
41. What's more important to reptiles: internal fertilization, or the development of scales? What are the benefits of both
1. 1 answer
2. asked by mysterychicken
3. 569 views
Final averages are typically approximately normally distributed with a mean of 65 and a standard deviation of 8. Your professor
1. 1 answer
2. asked by Alica
3. 561 views
Need help with short projectile motion questiona ball is thrown up off the roof of a school at an angle of 55 degrees from the
1. 3 answers
2. asked by jake
3. 561 views
The most useful indicator of the degree of democracy reached by a particular society is whether it has a:
1. 1 answer
2. asked by keke
3. 541 views
3. One of the main problems challenging the economics of many African nations today isa. a lack of diverse exports b. increasing
1. 1 answer
2. asked by y912f
3. 540 views
A model airplane takes 2.7 hours to construct and 13.5 hours to finish. Determine the ratio of construction time to finish time
1. 1 answer
2. asked by Natatlie
3. 537 views
how would i do this quadratic word problemA local daycare centre charges $65 per day to care for a child. The daycare currently
1. 2 answers
2. asked by jake
3. 531 views
A force of 240 lb. is resolved into forces at right angles to one another, the angle of F2 being 56 degrees from the 350 lb.
1. 1 answer
2. asked by dcw
3. 531 views
Does stereotyping bring more attention to group members similarities or differences?
1. 2 answers
2. asked by tonya
3. 523 views
Trying to complete a word search. What is a 6-letter word for "State of water that is most common on Earth's surface"
1. 3 answers
2. asked by Terri
3. 522 views
Why is historian Orlando Figes so against Lenin's actions - especially in the February and October revolutions
1. 1 answer
2. asked by David
3. 521 views
The basketball coach wants to know the perimeter of the court. The area of the court is 4700 feet2. What is the perimeter? The
1. 1 answer
2. asked by Christine
3. 518 views
The sun converts matter to radiant energy at a rate of 1.4 x 10 to the 17th power kg per year, how much matter is converted into
1. 2 answers
2. asked by Carole
3. 515 views
Select all of the answers that apply.A map _____. 1)is a representation of the earth's surface 2)is a portable document
1. 1 answer
2. asked by nicky
3. 509 views
Write 350 to700 words in which you analyze and post how the human resources assistance plan and aids you have been working on
1. 2 answers
2. asked by Anonymous
3. 501 views
As a foundation teacher how can you make maths sansetive to all foundation phase learners
1. 1 answer
2. asked by Thandokazi
3. 501 views
Write an equation for the reaction ofsodium bicarbonate with aqueous sulfuric acid to produce carbon dioxide.
1. 0 answers
2. asked by Brianna
3. 498 views

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