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Questions Asked on November 9, 2010

Ka=1.8x10^-5. How do you calculate the value of pKa?
1. 5 answers
2. asked by Vivian
3. 13,834 views
AgNO3+NaOH-->AgOH+NaNO3give me molecular , total ionic and net ionic???"
1. 1 answer
2. asked by julia
3. 10,457 views
A student pulls on a rope attached to a box of books and moves the box down the hall. The student pulls with a force of 182N at
1. 5 answers
2. asked by CJ12
3. 8,101 views
In 3–5 sentences, discuss special considerations for using blogs and wikis in research.I don't understand this question good
1. 14 answers
2. asked by yelena
3. 6,434 views
What is the answer to Algebra With Pizzazz 190?
1. 9 answers
2. asked by zackT
3. 4,942 views
The midpoint of line AB has coordinates of (5,-1). If the coordinates of A are (2,-3), what are the coordinates of B?Any help is
1. 3 answers
2. asked by Gabs
3. 3,930 views
(1 pt) The acceleration due to gravity, g, is given byg = (G*M)/(r^2) where M is the mass of the Earth, r is the distance from
1. 1 answer
2. asked by Student42
3. 3,757 views
suppose you had an unknown solution that contained either dissolved NaOH, NaCl< or NaNO3. you add 4 drops of AgNO3 solution to
1. 3 answers
2. asked by julia
3. 3,702 views
in the following total ionic equation, which ions are spectator ions?Cu2+ (aq) +
1. 1 answer
2. asked by julia
3. 3,647 views
Richard has been given a 5-question multiple-choice quiz in his history class. Each question has three answers, of which only
1. 1 answer
2. asked by Anonymous
3. 3,302 views
an astronaut rotates at the end of a test machine whose arm has a length of 10.0m. if the acceleration she experiences must not
1. 5 answers
2. asked by katy
3. 3,284 views
benzopinacol and benzopinacolone diferencesBecause benzopinacol and benzopinacolone have nearly identical melting points,
1. 1 answer
2. asked by Tammy
3. 3,273 views
3.5% of d is 0.105
1. 8 answers
2. asked by lilly
3. 2,907 views
If 1.10 g of steam at 100.0 degrees celsius condenses into 38.5 g of water, initially at 27.0 degrees celsius, in an insulated
1. 3 answers
2. asked by Please Help!
3. 2,625 views
5. Choose one of the topics listed below and write a five-sentence paragraph using chronological orderto arrange the details of
1. 2 answers
2. asked by jackie rios
3. 2,393 views
Water is flowing at 6 m/s in a circular pipe.If the diameter of the pipe decreases to five-seventh its former value, what is the
1. 2 answers
2. asked by David
3. 2,309 views
a)One game in a state lottery requires you to pick 1 heart, 1 club, 1 diamond, and 1 spade, in that order, from the 13 cards in
1. 2 answers
2. asked by Matthew
3. 2,307 views
XYZ's receivables turnover is 10x. The accounts receivable at year-end are $600,000. The average collection period is 36 days.
1. 1 answer
2. asked by Pam
3. 2,074 views
What is the structure of N4O, where the 3 nitrogen bonds have different bond lengths and the N=O bond is a double bond. I just
1. 2 answers
2. asked by Phil
3. 2,017 views
Calculate the density of F2 gas at 27 degree Celsius and 1.00 atm pressure?
1. 3 answers
2. asked by Amber
3. 2,002 views
What are the different types of triangles, and what are their distinguishing characteristics?
1. 0 answers
2. asked by Tyaalor
3. 1,867 views
The electron configuration of the outermost electrons of the halogen group is:a)ns2np7 b)ns1 c)ns2np5 d)ns2np6(n-1)d7 e)ns2np6
1. 1 answer
2. asked by lavonne
3. 1,864 views
One multicellular organism is a cube. Each of its sides is 3cm long. Each of its cells is 1cm to the third power.How many cells
1. 6 answers
2. asked by anna
3. 1,814 views
A boulder with a mass of 2,500 kg on a ledge 200 m above the ground falls. If the boulder's mechanical energy is conserved, what
1. 4 answers
2. asked by Adam
3. 1,752 views
which of the following sets of quantum numbers (n,l,ml,ms) describes the electron which is most easily removed when a sodium
1. 1 answer
2. asked by lavonne
3. 1,728 views
1. Write the formulas of the principal molecular or ionic species present in an aqueous solution of each substance.(a) Sodium
1. 3 answers
2. asked by Sara
3. 1,694 views
One inch is equal to approximately 2.5 centimeters. Let x represent inches and y represent centimeters. Write an equation in
1. 2 answers
2. asked by Loren
3. 1,655 views
How can the three sociological perspectives (e.g., social functionalism, social conflict, and symbolic interaction) be used to
1. 4 answers
2. asked by Isalee
3. 1,639 views
How/Why is this a metaphor?Once more in her bed beside the warm cocoon of her sister
1. 4 answers
2. asked by heather
3. 1,632 views
what is the pH of a solution that is 0.200 M in methylamine, CH3 NH2CH3NH2+ H20<======> CH3NH3+ + OH- Kb= 4.2 x 10 ^-4
1. 3 answers
2. asked by shanice
3. 1,610 views
The number of households with vcrs in 1990 was about 87.5% of the number with vcrs in 1993. About how many households had vcrs
1. 5 answers
2. asked by lilly
3. 1,610 views
Find the measure of each side of equilateral triagnle RST with RS = 2x + 2, ST = 3x, and TR + 5x -4.
1. 1 answer
2. asked by Nancy
3. 1,596 views
If a projectile is launched from a platform 30 feet high with an initial velocity of 128 feet per second, then the height of the
1. 1 answer
2. asked by Math is HARD
3. 1,552 views
In the sentence: Joe, injured by the ball, left the game. Would this be right? Participle-Injured, Modifier-Joe, and the Object
1. 2 answers
2. asked by Amy
3. 1,465 views
Would there be any effect on the amount of precipitate if tap water containing calcium ions is used instead of deionized water
1. 1 answer
2. asked by Chloe
3. 1,417 views
A voltaic cell is based on the reduction of Ag^+(aq) to Ag(s) and the oxidation of Sn(s) to SN^2+(aq).Write half-reactions for
1. 1 answer
2. asked by Amanda
3. 1,393 views
A gas mixture with a total pressure of 750 mmHg contains each of the following gases at the indicated partial pressures: , 265
1. 2 answers
2. asked by Lisa
3. 1,365 views
how long does it take for a deposit of $1400 to double at 7% compounded continouslyit would be awesome if you could also tell me
1. 1 answer
2. asked by steven
3. 1,359 views
Find the exact value of tan(a-b)sin a = 4/5, -3pi/2<a<-pi; tan b = -sqrt2, pi/2<b<pi identity used is: tan(a-b)=(tan a-tan
1. 4 answers
2. asked by Dee
3. 1,356 views
An alloy is made by using copper and zinc in the ratio of 17:3 how much zinc is used to make 4kg of the alloy?
1. 3 answers
2. asked by Anonymous
3. 1,311 views
A salesperson receives 5.4% commission. On one sale, she received $6.48. What was the amount of the sale?
1. 3 answers
2. asked by lilly
3. 1,280 views
Write the nouns and pronouns used as adjectives and the noun each one modifies.1 the wings of a duck are small for its body
1. 5 answers
2. asked by lily
3. 1,268 views
Sauerfood company has decided to buy a new computer system with an expected life of 3 yrs. the cost is 150,000.the comapny can
1. 0 answers
2. asked by Nancy
3. 1,259 views
The sum of two opposite angles of a parallelogram is 130 degree. Find the measure of each of its angle.
1. 4 answers
2. asked by Tapas
3. 1,254 views
a book weighs 4 N. When held at rest in your hands, the net force on the book?
1. 1 answer
2. asked by meghan
3. 1,247 views
Find the differential dy of the given function:y=xcosx would this just be dy=(cosx-xsinx)dx
1. 2 answers
2. asked by jess
3. 1,244 views
Tower 1 is 90 ft high and tower 2 is 40 ft high. The towers are 200 ft apart. A guy wire is to run from point A to the top of
1. 0 answers
2. asked by Yu
3. 1,233 views
Suppose that the microwave radiation has a wavelength of 10.8 cm. How many photons are required to heat 215 mL of coffee from
1. 2 answers
2. asked by Dolapo
3. 1,222 views
How many H2O molecules are formed when 14 methanol molecules react?
1. 2 answers
2. asked by Kaley
3. 1,211 views
If the first and third of three consecutive odd integers are added, the result is 69 less than five times the second integer.
1. 3 answers
2. asked by franklin
3. 1,202 views
Write the formulas of the principal molecular or ionic species present in an aqueous solution of each substance.(a) Sodium
1. 1 answer
2. asked by kim k
3. 1,191 views
The first European novel is generally considered to be _____.Pamela Robinson Crusoe Gulliver's Travels Don Quixote Silas Marner
1. 4 answers
2. asked by danny
3. 1,179 views
An angent makes 16% commission on an athletes signing bonus. If the bonus is $26,000, what is the agents commission?
1. 5 answers
2. asked by lilly
3. 1,168 views
An 8 ounce bottle of hairspray costs $3.66. Find the unit price in cents per ounce.would it be 0.4575 or 45.75 cents per ounce?
1. 1 answer
2. asked by m
3. 1,136 views
A projectile is launched from ground level to the top of a cliff which is 195 m away and 135 m high.If the projectile lands on
1. 0 answers
2. asked by bobjahng2
3. 1,134 views
A carpenter can make some chairs and stools. All together there are 32 legs. If the carpenter has pieces of wood that can be
1. 1 answer
2. asked by dana
3. 1,132 views
Your department’s account software is extremely outdated and you have included the purchase of new software int his year’s
1. 1 answer
2. asked by meka
3. 1,111 views
which of the following is not paramagnetic?a)Co3+ b)Se2- c)Gd (element 64) d)Ni e)Gd3+
1. 3 answers
2. asked by lavonne
3. 1,106 views
· Identify two different points of view for the topic from the list in Appendix B that you have chosen. Choose the point of
1. 1 answer
2. asked by Angie
3. 1,104 views
solve for x using the addition principle.x + 6 = -8 What is the solution for x? Thanks kindly
1. 1 answer
2. asked by cindy
3. 1,102 views
simplify√(x^5y^8) the answer is x^5/2y^4 does it matter if 5/2 is replaced with 2.5? x^2.5y^4 its the same thing right?
1. 1 answer
2. asked by priya
3. 1,073 views
The Dark Knight was the most popular film of 2008. [Stating it was the most popular film of 2008 is a big statement that needs
1. 2 answers
2. asked by Anonymous
3. 1,069 views
40.0 ml of an acetic acid of unknown concentration is titrated with 0.100 M NaOH. After 20.0 mL of the base solution has been
1. 1 answer
2. asked by Kelly
3. 1,036 views
An employee earns $40 per hour and 1.75 times that rate for all hours in excess of 40 hours per week. Assume that the employee
1. 1 answer
2. asked by Anonymous
3. 1,025 views
10th grade English question: In the sentence: The boys playing football look tired, what would the ParticipleModifier, and
1. 1 answer
2. asked by Amy
3. 1,024 views
What is the acceleration on planet X, if a 1.5 kg object weighs 3.45 N on plantet X?
1. 3 answers
2. asked by Anonymous
3. 1,014 views
you flip a coin and toss a 1-6 number cube.P(not tails and not a 3
1. 2 answers
2. asked by autumn brooks
3. 1,007 views
What is the name of the large mountain range in South America? I know the longest mountain range is The Andes so can I assume
1. 2 answers
2. asked by Reed
3. 1,003 views
A boat traveling on the Snake River travels 24 miles upstream in 3 hours. The return trip takes the boat only 2 hours. Find the
1. 1 answer
2. asked by Anonymous
3. 989 views
According to the U.S. Census Bureau in 2009 there were 21,854,374 veterans in the United States. Veterans of the Korean War
1. 1 answer
2. asked by help
3. 983 views
A piece of cadmium is placed in a solution in which [Cd^2+]=[Sn^2+]=1.00M. Will the following reaction proceed spontaneously?Cd(
1. 1 answer
2. asked by Amanda
3. 959 views
How did Americans and Indians react to the Sand creek massacre and the Wounded Knee Massacre?
1. 2 answers
2. asked by cierra
3. 957 views
Calculate the change in heat when 3.05g of water vapor (steam) at 100.0 degrees celsius condenses to liquid water and then cools
1. 2 answers
2. asked by Jess
3. 942 views
No glass is perfectly transparent. Mainly because of reflections, about 90% of light passes through an average sheet of clear
1. 0 answers
2. asked by Anonymous
3. 933 views
Estimate each quotient. Write the fact you use?58 divided by 3
1. 6 answers
2. asked by Batul
3. 930 views
3. Suppose that part (II) of the experiment were carried out with aqueous NaOH instead of Ba(OH)2 to form soluble Na2SO4 along
1. 1 answer
2. asked by kim k
3. 913 views
The large intestine supports ___% of chemical digestion.A) 0 B) 75 C) 50
1. 4 answers
2. asked by Bee
3. 904 views
Write two paragraphs explaining the changes that you would make to revise the paper. The minimum word count for these two
1. 2 answers
2. asked by Anonymous
3. 899 views
Two large circular metal plates are parallel and nearly touching, only 4.1 mm apart. The two plates are connected to the
1. 0 answers
2. asked by dede
3. 898 views
*I NEED THESE IN ALGEBRAIC EXPRESSIONS!1.) The larger of two numbers is 1 less than 3 times the smaller. Their sum is 63. Find
1. 1 answer
2. asked by Disha
3. 880 views
A square shaped park measures 3/5 mile long on each side. What is the area of the park?
1. 2 answers
2. asked by marty Martinez
3. 873 views
When the monarchy was restored in England, the theaters were almost immediately closed.False?
1. 2 answers
2. asked by danny
3. 871 views
Pure water in contact with air has a higher conductivity than the same water that has had nitrogen gas bubbled through it. Why?
1. 1 answer
2. asked by kim k
3. 868 views
You weigh out 10.000 g of a mixture of NaHCO3 and Na2CO3 and add an excess of HCl. After the reaction is over, you evaporate off
1. 1 answer
2. asked by Vova
3. 861 views
the earth (mass=5.98x10^24kg) rotates around the sun in a orbit that is approximately circular, with a radius of 1.5x10^11mfind
1. 1 answer
2. asked by peter
3. 856 views
how do i write a program in python for an atm machine
1. 0 answers
2. asked by ralph
3. 854 views
35. -"¿_____hablas?"-"Pues, inglés y español." a. Cómo b. Qué c. Dónde d. Quién B? 37. Pues, necesito _____ carpeta para
1. 2 answers
2. asked by mysterychicken
3. 853 views
How many moles of Mg2+ and NO3- form for each mole of Mg(NO3)2 that dissolves?
1. 1 answer
2. asked by Kaley
3. 841 views
A car is moving such that its kinetic energy is 2.20×105 J. The car accelerates and the engine does 2.10×105 J of work to
1. 1 answer
2. asked by Anonymous
3. 835 views
when you put together unequal groups can you add
1. 3 answers
2. asked by cheyenne
3. 835 views
A weather balloon is inflated to a volume of 29.6 L at a pressure of 734 mmHg and a temperature of 27.0 C. The balloon rises in
1. 1 answer
2. asked by Lisa
3. 829 views
a wheel of radius R rotates making f revolutions per second. the quantity f is know as the frecuency of the motion. show tha 1/f
1. 1 answer
2. asked by katy
3. 820 views
What were a collection of spells buried with a mummy
1. 2 answers
2. asked by Anonymous
3. 812 views
A tropical water lily doubles in size each week. If it takes 60 weeks for the plant to completely cover a pond, when will half
1. 5 answers
2. asked by Maya
3. 810 views
Which of the forty-eight contiguous states has the largest land area? My answer is Texas. I actually just looked on my U.S. map
1. 2 answers
2. asked by Reed
3. 809 views
A hot air balloon starts at its launching station and it goes at a horizontal speed of 2.7 m/s and a vertical wind of 1.1 m/s.
1. 4 answers
2. asked by Ashley
3. 808 views
A sealed cubical container 30.0 cm on a side contains three times Avogadro's number of molecules at a temperature of 20.0°C.
1. 1 answer
2. asked by Milo
3. 807 views
What type(s) of quadrilateral has only rotational symmetry?
1. 1 answer
2. asked by John
3. 802 views
The gravitational force of any object near Earth is _____?A unknown B friction C Newton's First Law D 9,8m/s2 When you walk
1. 3 answers
2. asked by Jacob
3. 799 views
How do I do this? I am very lost.If you live in California, the decision to buy earthquake insurance is an important one. A
1. 3 answers
2. asked by monica
3. 793 views

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