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Questions Asked on April 6, 2010

Tetraphosphorus trisulphide (P4S3) is used in the match heads of some matches. It is produced in the reaction 8P4+3S8 --> 8P4S3.
1. 4 answers
2. asked by Ana
3. 9,970 views
For each trial, enter the amount of heat gained by the chemical system of ammonium nitrate, qrxn. The specific heat of water is
1. 3 answers
2. asked by Megan
3. 5,828 views
The easiest fusion reaction to initiate is1-1H + 1-1H------> 4-2He + 1-0 n The 1-1 indicates a small one above the other on the
1. 7 answers
2. asked by Jim
3. 4,944 views
Between what two consecutive integers is each square root of 139?
1. 8 answers
2. asked by Chloe dawgg :)
3. 4,329 views
A projectile is shot straight up from the earth's surface at a speed of 1.20×104 KM/HR.How high does it go?
1. 4 answers
2. asked by Michael
3. 3,906 views
A statistics professor receives an average of five e-mail messages per day from students. Assume the number of messages
1. 2 answers
2. asked by Suphaluck
3. 3,708 views
Two objects attract each other gravitationally with a force of 2.1×10−10 N when they are 0.21 M apart. Their total mass is
1. 2 answers
2. asked by mm
3. 3,467 views
A student is given a sample in lab which contains one of the ions listed below. After adding a few drops ofsolution to part of
1. 4 answers
2. asked by Sam
3. 3,398 views
What environmental conditions would favor sexual reproduction? What environmental conditions would favor asexual reproduction?Or
1. 5 answers
2. asked by Rachel
3. 3,344 views
The mom left the room with a modicum of respect after her baby began ____.a) sleeping b) screaming c) talked d) singing B???
1. 6 answers
2. asked by Keen
3. 3,150 views
Two identical objects each hold a net charge of q = 8e. If the gravitational force between the two objects exactly cancels the
1. 4 answers
2. asked by echem
3. 3,077 views
The air in a dry, sealed 2L soda bottle has a pressure of 0.998 atm at sea level at a temperature of 34C. what will be it's
1. 2 answers
2. asked by Courtney
3. 3,065 views
Mars rotates on its axis once every 24.8 hours.What is the altitude of a geosynchronous satellite orbiting Mars. I have the
1. 2 answers
2. asked by Hoa
3. 2,845 views
Probability: There are 10 yellow cards, 6 green, 9 orange, and 5 red cards in a stack of cards turned face down. Once a card is
1. 14 answers
2. asked by Joe
3. 2,668 views
If the price of electrical enegy is $0.10 per kilowatt *hour, find the cost of using electrical energy to heat the water in a
1. 2 answers
2. asked by Dave
3. 2,498 views
True or False?An adverb is a word used to modify a verb. Ture???
1. 6 answers
2. asked by Keen
3. 2,455 views
Write 67 hundredths as a percent.a) 670% b) 67% c) 0.067% d) 0.67% D???
1. 6 answers
2. asked by Keen
3. 2,415 views
A rock is dropped of the side of a bridge and hits the water below 4s later.a. What was the rock’s velocity when it hit the
1. 2 answers
2. asked by Jackie
3. 2,398 views
Which of the following is a proper noun?a) newspaper b) Conchita Alonso c) River d) skyscraper I think the answer is B. Am I
1. 8 answers
2. asked by Keen
3. 2,338 views
somewhere between earth and the moon gravity from these two bodies on a space pod would cancel. Is this location nearer to earth
1. 1 answer
2. asked by elisia
3. 2,335 views
Estimate the freezing point of 150 cm3 of water sweetened with 7.5g of sucrose(C12H11O22). (Kf for water is 1.86 K kg mol-1;
1. 2 answers
2. asked by Anonymous
3. 2,334 views
Find the scalar and vector projections of b onto a.a = <3, −4> b = < 6, 0> compab projab
1. 1 answer
2. asked by Mike
3. 2,316 views
A satellite is launched into orbit 200 kilometers above the Earth.The orbital velocity of a satellite is given by the formula
1. 1 answer
2. asked by Macy
3. 2,199 views
A walk would invigorate you after a tiring day, especially if you are ____.a) hungry b) smelly c) injured d) tired D????
1. 4 answers
2. asked by Keen
3. 2,150 views
3O2(g)---> 2O3(g)At a given instant, the reaction rate in terms of [O2] is 2.17x10^-5 mol/L*s. What is it in terms of O3?
1. 1 answer
2. asked by Mike
3. 2,013 views
True or False?An appositive is a noun that is placed after another noun in order to tell more about it and it's usually set off
1. 2 answers
2. asked by Keen
3. 1,780 views
what do limiting reagents have to do with...5F2(g) + 2NH3(g) ==> N2F4(g) + 6HF(g) a)If you have 66.6 g NH3, how many grams of F2
1. 1 answer
2. asked by Keith
3. 1,755 views
if the length of two sides of an isosceles triangle are 7 and 15, what is the perimeter of the triangle?
1. 1 answer
2. asked by patel
3. 1,730 views
True or FalseA helping verb is the verb that helps the main verb make its statement. True???
1. 2 answers
2. asked by Keen
3. 1,722 views
What are several reasons why the actual yield from a chemical reaction is not usually equal to the theoretical yield?
1. 1 answer
2. asked by John
3. 1,687 views
After the play ____, several critics made scathing comments about it.a) succeeded b) opened c) closed d) bombed D???
1. 3 answers
2. asked by Keen
3. 1,611 views
I have to write a bunch of atomic symbol for these isotopes and I don't understand how to I do it.(a) atomic number=53, number
1. 2 answers
2. asked by SC
3. 1,595 views
A 1kg projectile is fired at 10m/s from a 10kg launcher. The momenta of the projectile and the launcher have the same magnitude,
1. 3 answers
2. asked by sherri
3. 1,584 views
True or False?Density is another property of matter True???
1. 4 answers
2. asked by Keen
3. 1,573 views
According to the kinetic-molecular theory, gases are highly compressible because the particles of they consist:a. lose energy
1. 1 answer
2. asked by Ana
3. 1,560 views
A 2.00L flask is filled with propane gas(C3H8)at 1.00atm and 15C. What is the mass of propane in the flask?
1. 1 answer
2. asked by Britt
3. 1,551 views
True of False?A regular verb is a word that expresses an action; an irregular verb is a non-action word. False???
1. 2 answers
2. asked by Keen
3. 1,550 views
there are 500 seats in the auditorium. A concert was playing there and 1/5 of the seats were not filled. All the other seats
1. 2 answers
2. asked by Alexander
3. 1,544 views
A butterfly at eye level is 18 cm in front of an plane mirror. You are behind the butterfly, 45 cm from the mirror. What is the
1. 1 answer
2. asked by Susan
3. 1,514 views
Strontium-90 has half-life of 28 years. if a 1.00-mg sample was stored for 112 years. what mass of Sr-90 would remain?
1. 1 answer
2. asked by bob
3. 1,489 views
a study found that the means waiting time to see a physican at an outpatient clinic was 40 minutes with a standard deviation of
1. 1 answer
2. asked by tina
3. 1,486 views
What are all the possible lewis structures for SCN-? Including the formal charges to all atoms.
1. 1 answer
2. asked by Max
3. 1,430 views
A container holds 1.1 g of oxygen at a pressure of 7.40 atm .How much heat is required to increase the temperature by 110 degree
1. 0 answers
2. asked by Kidda
3. 1,354 views
In thermodynamics, the standard pressure is 100 kPa. What is this value in units of atmospheres.I got 9.86x10^-7 atm but the
1. 3 answers
2. asked by Ana
3. 1,348 views
Ammonia is formed by reacting nitrogen and hydrogen gases. How many liters of ammonia gas is formed from 13.7 L of hydrogen gas
1. 2 answers
2. asked by dale
3. 1,341 views
True or FalseThere could be a noun, a verb and an adjective in one sentence.
1. 3 answers
2. asked by Keen
3. 1,336 views
H2O(l) = H2O(g) deltaHvap = + 40.7kJ shows the change in enthalpy when 1mol of liquid water vaporizes into water vapor. This is
1. 1 answer
2. asked by Tori
3. 1,297 views
Can someone please explain this problem to me: I have to use integrals to find volumes with known cross sections but i just
1. 0 answers
2. asked by summer
3. 1,288 views
A butterfly at eye level is 22 cm in front of an plane mirror. You are behind the butterfly, 46 cm from the mirror. What is the
1. 2 answers
2. asked by mika
3. 1,276 views
Please help solving this problem.Solve the following word problem: One poll reported that 48% of city residents were against
1. 1 answer
2. asked by bindiya farswani
3. 1,262 views
In the reaction:NaOH + HCl --> NaCl + H2O how many moles of water are produced when 1 mole of HCl is neutralized by 1 mole of
1. 1 answer
2. asked by Anonymous
3. 1,211 views
write a program that produce a bar chart showing the population growth of Prairieville, a small town in the Midwest, at 20 year
1. 1 answer
2. asked by mike
3. 1,199 views
If Naomi invests in a stock portfolio, her returns for 10 or more years will average 10%-12%. Naomi realizes that the stock
1. 0 answers
2. asked by Heather
3. 1,189 views
#3 of case study:If Naomi invests in a stock portfolio, her returns for 10 or more years will average 10%-12%. Naomi realizes
1. 0 answers
2. asked by Heather
3. 1,186 views
write a program that asks the user to enter today's sales rounded to the nearest $100 for each of three stores. the program
1. 0 answers
2. asked by marcus
3. 1,173 views
How do you find the derivative of:y= 2sinx cosx
1. 2 answers
2. asked by Wayne
3. 1,157 views
Find the scalar and vector projections of b onto a.a = 2i - j + 6k, b = j + (1/2)k compab = projab =
1. 1 answer
2. asked by Mike
3. 1,136 views
Could someone please help me with this problem? I need to solve -5/2x greater than or equal to -7/4.Here is the answer that I
1. 1 answer
2. asked by B.B.
3. 1,119 views
A company is increasing production at the rate of 25 units per day. The daily demand function is determined by the fact that the
1. 0 answers
2. asked by Alex
3. 1,112 views
Seals may cool themselves by using thermal windows, patches on their bodies with much higher than average surface temperature.
1. 2 answers
2. asked by Kidda
3. 1,111 views
Stan bought several clothing items at macys. He bought a jacket for $30.00, a hat for $10.00, and two shirts for $5.00 each. He
1. 1 answer
2. asked by Alexander
3. 1,102 views
The masses of 1 mole of various gases are as follows: hydrogen about 2 grams, helium about 4 grams, nitrogen about 28 grams,
1. 0 answers
2. asked by Benny
3. 1,092 views
If Naomi decides that she will invest $3,000 per year in a 6% annuity for the first ten years, $6,000 for the next ten years,
1. 3 answers
2. asked by Heather
3. 1,092 views
Water is descending in a vertical pipe of diameter 7 cm and open to the atmosphere. At a lower point the water flows into a
1. 0 answers
2. asked by Noodle
3. 1,086 views
2 teams played each other recently. Team 1 scored N points, while team 2 scored M. 1<M and N<100.The first digit of N is a, the
1. 2 answers
2. asked by CT
3. 1,074 views
sorry to repost this question but i'm confused on this partThe solubility of borax is directly proportional to temperature.
1. 1 answer
2. asked by eng
3. 1,063 views
Money is invested at two rates of interest. One rate is 8% and the other is 2%. If there is $1000 more invested at 8% than at
1. 1 answer
2. asked by jerson
3. 1,057 views
Waste created by man can be classified under Heading X (eg torn book, mouldy bread, rotten apple) and Heading Y (plastic bag,
1. 3 answers
2. asked by Jenny
3. 1,042 views
Ture or FalseAn adjective is a word that modifies or describes a noun or pronoun. True???
1. 2 answers
2. asked by Keen
3. 1,035 views
Needs help with writing a thesis statement about depression within teen suicide.
1. 1 answer
2. asked by April
3. 1,011 views
I havent been at school for 8 days due to somthing wrong with my heart, but the teachers gave me work. I have no clue how to do
1. 1 answer
2. asked by Help please
3. 1,000 views
When the iron (II) ammonium sulfate was mixed with the [Fe2+(CN-)6]4- ion, the precipitate was initially white but turned blue
1. 1 answer
2. asked by Anonymous
3. 994 views
I havent been at school for 8 days due to somthing wrong with my heart, but the teachers gave me work. I have no clue how to do
1. 2 answers
2. asked by Help please
3. 986 views
She is spending money like she have plenty.a) Change the words "like" to "as if" and "have" to "has". b) The word "is" should be
1. 3 answers
2. asked by Keen
3. 935 views
You'll ain't going to like the food she done prepared. Which sentence is correct:a) You are not going to like the food she has
1. 3 answers
2. asked by Keen
3. 913 views
I did an experiment on a burning candle, and I need help with some of the questions. Thank you very much in return. Please no
1. 2 answers
2. asked by Sara
3. 912 views
True or False?A sentence that has an original statement with quotation marks may also have a comma.
1. 3 answers
2. asked by Keen
3. 906 views
The center of a 1.10km diameter spherical pocket of oil is 1.10km beneath the Earth's surface.Estimate by what percentage
1. 1 answer
2. asked by Adam
3. 903 views
Can someone provide an example of patient charges with corresponding billing charges?
1. 1 answer
2. asked by Onlin Bus
3. 889 views
1. I am in a samulnori club. We learn about samulnori and play percussion instruments such as drums and gongs.2. I am in a
1. 2 answers
2. asked by rfvv
3. 886 views
Determine the density of chlorine gas at 22C and 1.00 atm pressure.
1. 1 answer
2. asked by Anonymous
3. 866 views
the scale of two similar quadrilaterals is 1:2. The perimeter of the smaller quadrilateral is 80 centimeters. What is the
1. 1 answer
2. asked by Anonymous
3. 857 views
how many liters of water must be added to 30 liters of a 20% alcohol solution to dilute it to a 15% solution?
1. 0 answers
2. asked by Dawn
3. 837 views
A fluid in an insulated, flexible bottle is heated by a high resistance wire and expands. If 9 kJ of heat isapplied to the
1. 0 answers
2. asked by nish
3. 836 views
Sue has $400 in her savings account. If the bank pays her 6 1/2% interest, how much interest will Sue earn?a) $260 b) $29.50 c)
1. 5 answers
2. asked by Keen
3. 835 views
For a downward-sloping demand curve, marginal revenue decreases as quantity sold increases. True or False?
1. 1 answer
2. asked by L
3. 832 views
Gavin, an 18 year old sudent was eating lunch on the grounds of a school. He threw a half- eaten apple toward the outside wall
1. 0 answers
2. asked by Jackie
3. 823 views
What is the difference in blood pressure between the head and feet of a person of height 171 cm?
1. 0 answers
2. asked by Noodle
3. 821 views
BD is a perpendicular bisector of triangle ABC. XZ is a perpendicular bisector of triangle WXY.Triangle ABC is similar to
1. 0 answers
2. asked by Jenna
3. 817 views
A weight attached to a spring is pulled down 4 inches below the equilibrium position. Assuming that the frequency of the system
1. 0 answers
2. asked by ali
3. 815 views
Which one of the following combinations of reagents will result in a spontaneous reaction?A) Al(s) + CuCl2(aq) B) Al(s) +
1. 1 answer
2. asked by Trixie
3. 814 views
A) How do you prove that if 0(<or=)x(<or=)10, then 0(<or=)sqrt(x+1)(<or=)10?B) So once that is found, then how can you prove
1. 0 answers
2. asked by Sarita
3. 805 views
write a program that asks the user to enter today's sales rounded to the nearest $100 for each of three stores. the program
1. 2 answers
2. asked by mike
3. 801 views
Carbon monooxide CO is product of incomplete combustion of fuel. Find the volume that 42g of CO gas occupies at STP.
1. 1 answer
2. asked by Bobby
3. 778 views
it takes a 40 lb turkey two hours to cook. Tom baked his own turkey that was 1/5 the size of a 40 lb turkey. How long will it
1. 5 answers
2. asked by Alexander
3. 776 views
Marshall applies a constant force of 20N to a box and causes it to move at a constant speed of 4m/s. Show that the work he does
1. 2 answers
2. asked by sherri
3. 771 views
i am a quadilateral. I have four sides, four angles and only one set of parallel lines. i am not a parallelogram. what am I ?
1. 2 answers
2. asked by darlene
3. 759 views
why are the equivalence point and the end point different in a titration?
1. 2 answers
2. asked by shelley
3. 753 views
NaOH + HCl --> NaCl + H2OWhat is the amount of heat absorbed by water? given: mass: 102.2 grams specific heat: .9601 cal/g
1. 1 answer
2. asked by Janae
3. 739 views
While visiting Planet Physics, you toss a rock straight up at 15 and catch it 2.4 later. While you visit the surface, your
1. 0 answers
2. asked by Adam
3. 735 views

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