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Questions Asked on February 23, 2010

In the experiment Nitration of Methyl Benzoatewhy is it important to add the nitric acid-sulfuric acid mixture slowly over a 15
1. 2 answers
2. asked by Kendra
3. 5,929 views
A 45 kg crate is placed on an inclined ramp. When the angle the ramp makes with the horizontal is increased to 29 degrees, the
1. 3 answers
2. asked by Grace
3. 5,024 views
a 1200kg car coasts from rest down a driveway that is inclined 20degrees. to the horizontal and is 15m long. how fast is the car
1. 3 answers
2. asked by eddy
3. 4,565 views
2 waves are traveling through a container of nitrogen gas. Amplitude of the first wave is 0.3 cm, and the second 0.9 cm. What is
1. 1 answer
2. asked by Toni
3. 4,456 views
Whcih property of water explains ice floating on the top of a pond rather than sinking to the bottom?a. surface tension b.
1. 1 answer
2. asked by Edwina
3. 4,314 views
How much heat is given up when 20 g of steam at 100 deg C is condensed and cooled to 20 deg.C?
1. 2 answers
2. asked by Mary
3. 3,708 views
The work done by an external force to move a -7.75 µC charge from point a to point b is 25.0 * 10-4 J. If the charge was
1. 2 answers
2. asked by SHUBHANGI
3. 3,576 views
which has the highest lattice energy BaO or SrO
1. 4 answers
2. asked by Jack
3. 3,065 views
A car traveling on a flat (unbanked) circular track accelerates uniformly from rest with a tangential acceleration of 1.70
1. 6 answers
2. asked by engmath
3. 3,059 views
3) A 5.0 kg book is sitting on a table. Which describes the force acting on the booka. there are no forces acting on the book b.
1. 1 answer
2. asked by amber
3. 2,956 views
A child goes down a playground slide with an acceleration of 1.24 m/s^2.Find the coefficient of kinetic friction between the
1. 1 answer
2. asked by Abby
3. 2,852 views
When you push a 1.80-kg book resting on a tabletop, it takes 2.05 N to start the book sliding. What is the frictional force
1. 1 answer
2. asked by Alex
3. 2,687 views
what does this saying mean?"The whole is greater than the sum of its parts"
1. 3 answers
2. asked by Sara
3. 2,514 views
type of chemical reaction synthesis, decomposition, double or single K+B2O3=K2O+B
1. 2 answers
2. asked by norma
3. 2,436 views
Early in 2007, Inez Marcus, the chief financial officer for Suarez Manufacturing, ws given the task of assessing the impact of a
1. 3 answers
2. asked by jeffer
3. 2,330 views
Express the function F(x)=1/(x+9) in the form g of h. If h(x)= x+9 , find the function g(x).
1. 2 answers
2. asked by Shel Bell
3. 2,182 views
The typical resistance of the tungsten filament of a 60 watt incandescent light bulb when it is turned off is 24 ohms and its
1. 2 answers
2. asked by Joseph
3. 2,095 views
calculate the final temperature (once the ice has melted) of a mixture made up of initially of 75.0mL liquid water at 29 degrees
1. 3 answers
2. asked by Celine
3. 2,084 views
Assume the height of a hill is 50m, calculate:a.the velocity of a car at the bottom ofg the hill b.the height at which it will
1. 3 answers
2. asked by bola
3. 2,026 views
Two loudspeakers in a 20°C room emit 629 Hz sound waves along the x-axis.(a) If the speakers are in phase, what is the smallest
1. 1 answer
2. asked by anonymous
3. 1,916 views
When brakes applied to a moving car travelling at 60km/hr it decelerates at a uniform rate of 5ms-2. Calculate the time taken to
1. 7 answers
2. asked by bola
3. 1,867 views
type of chemical reaction equationH3PO4+KOH=K3PO4+H2O
1. 1 answer
2. asked by norma
3. 1,804 views
College students average 7.8 hours of sleep per night with a standard deviation of 45 minutes. If the amount of sleep is
1. 3 answers
2. asked by Anonymous
3. 1,804 views
How much heat is required to vaporize 343g of liquid ethanol at its boiling point?ΔHvap+38.6 Kj\mol
1. 2 answers
2. asked by Anonymous
3. 1,793 views
At what height is an object that weighs 490 N if it gravitational potential energy is 4900 N-m?
1. 1 answer
2. asked by john
3. 1,711 views
How far above the surface of the Earth does an object have to be in order for it to have the same weight as it would have on the
1. 1 answer
2. asked by Max
3. 1,705 views
How much heat is required to warm 225g of ice from -48.6C melt the ice warm the water from 0.0C to 100.0C boil the water and
1. 4 answers
2. asked by Anonymous
3. 1,676 views
#35. In two or three well-developed paragraphs, list the populations that are affected by ultriviolet light and identify the
1. 3 answers
2. asked by y912f
3. 1,672 views
the heat of fusion for thallium is 21 J/g, and its heat of vaporization is 795 J/g. Thallium's melting point is 304 degrees
1. 2 answers
2. asked by billy
3. 1,672 views
a delta is a:a.wid river mouth where tides are experienced b.long narrow arm of the sea resulting from the submergence of a
1. 1 answer
2. asked by Dina
3. 1,580 views
Calculate the initial molarity of KNH2 and the molarities of K+, NH3, OH-, and H3O+ in an aqueous solution that contains 0.75 g
1. 4 answers
2. asked by Trixie
3. 1,458 views
Calculate the theoretical amount of CaCl2 that would be required to change the temperature of 50 mL of water from from
1. 2 answers
2. asked by sakura_09
3. 1,433 views
Determine the resulting temperature when 150 g of ice at 0 deg.C is mixed with 300 g of water at 50 deg C.
1. 1 answer
2. asked by Stacie
3. 1,367 views
A gas occupies a volume of 140 mL at 35 degrees celsius and 97 kPa. What is the volume of the gas at STP?
1. 2 answers
2. asked by Bob
3. 1,351 views
the appalachian mountain extend north from the united states into the canadian provinces of ______,______ ______,______ _____
1. 1 answer
2. asked by kate
3. 1,335 views
Hans uses a wheelchair. Although he has a rampto in his house, he finds it difficult to get his wheelchair up the ramp. Whcih
1. 2 answers
2. asked by Leah
3. 1,329 views
Proctor Micro-Computers, Inc. requires $1,200,000 in financing over the next two years. The firm can borrow the funds for two
1. 1 answer
2. asked by Anonymous
3. 1,326 views
A farm tractor tows a 3800-kg trailer up a 19 degrees incline with a steady speed of 3.0 m/s. What force does the tractor exert
1. 1 answer
2. asked by Abby
3. 1,305 views
Explain how four red marbles can make up 1/3 of a group of marbles and three blue marbles make up 1/4 of the same group.
1. 5 answers
2. asked by Drew
3. 1,284 views
I forgot to include the following statements.1) Answer four out of (or just "of") the following six questions. 2) do you usually
1. 1 answer
2. asked by Franco
3. 1,263 views
how much heat is liberated by the combustion of 206 grams of hydrogen?ΔHcomb= -286kj/mol
1. 2 answers
2. asked by Anonymous
3. 1,262 views
I know when solving inequalities the sign changes when you multiply or divide by a negative number, my question is does this
1. 1 answer
2. asked by Michelle
3. 1,248 views
A single conservative force acts on a 5.00 kg particle. The equation Fx = (2x + 4) N describes this force, where x is in meters.
1. 2 answers
2. asked by gina
3. 1,240 views
A crate full of artichokes rests on a ramp that is inclined 10.0° above the horizontal. Give the direction of the normal force
1. 6 answers
2. asked by Max
3. 1,222 views
How do you construct a quadrilateral with two pairs of parallel sides of length 4 cm and 6 cm and one pair of opposite angles
1. 1 answer
2. asked by MIcky
3. 1,217 views
I believe innovation will come from outside the mainstream music .... If you are a record producer or engineer, create other
1. 1 answer
2. asked by licia
3. 1,204 views
What is the distance from the Earth's center to a point outside the Earth where the gravitational acceleration due to the Earth
1. 1 answer
2. asked by Anonymous
3. 1,202 views
2. Bromine can be added to limonene to create a brominated compound.The balanced equation is shown below. When 613 mg of
1. 5 answers
2. asked by Grace
3. 1,202 views
I read Sparknotes No Fear Shakespeare Hamlet...how do I cite the source?Crowther, John. Ed. “No Fear Hamlet.” SparkNotes
1. 2 answers
2. asked by Anonymous
3. 1,149 views
#33. In two or three well-developed paragraphs, explain how water is treated so that it can be used for safe drinking water.
1. 0 answers
2. asked by y912f
3. 1,146 views
Can poor nutrition early in life be mitigated to allow for healthy physical growth and development later
1. 1 answer
2. asked by tonya
3. 1,145 views
A light wave has a 670 nm wavelength in air. Its wavelength in a transparent solid is 376 nm.(a) What is the speed of light in
1. 2 answers
2. asked by anonymous
3. 1,133 views
Have you ever seen the movie, "The Mighty", some people refer to it as "Freak the Mighty".I have a few questions on it, but
1. 3 answers
2. asked by Sara
3. 1,131 views
i need to find a website that i can down load a copy of an adult psychologial treatment form...where can i find one????
1. 2 answers
2. asked by barb
3. 1,118 views
what causes deferred junctions on on rivers flood plains?a.swamps b.ox-bow lakes c.raised riverf banks d.river cliffs
1. 1 answer
2. asked by Nyasha
3. 1,103 views
¿Va a viajar a Perú tu primo Andrés?
1. 4 answers
2. asked by Anonymous
3. 1,098 views
#33. In two or three well-developed paragraphs, explain how water is treated so that it can be used for safe drinking water.
1. 1 answer
2. asked by y912f
3. 1,066 views
what is The relationship between the number of carbon atoms and the boiling points of the alkanes?
1. 1 answer
2. asked by shelly
3. 1,065 views
okay i have a question which is on a key assesed pieceexplain the physical and chemical changes when a candle burns using the
1. 2 answers
2. asked by minka
3. 1,064 views
the great plains of canada are found in the canada provinces of
1. 1 answer
2. asked by kate
3. 1,059 views
A multiple choice answers for the question. What is the measure of the dent angle for a star-shaped polygon with 20 points and a
1. 1 answer
2. asked by Donna
3. 1,051 views
what does the positive slope of a line with Government expenditure (G) represent when Y=Total expenditure is on the x axis.For
1. 0 answers
2. asked by Salman
3. 1,051 views
At what rate must a cylindrical spaceship rotate if occupants are to experience simulated gravity of 0.52 g? Assume the
1. 1 answer
2. asked by Anonymous
3. 1,039 views
find the equation (in slope intercept form) the line passing through the points with the given coordinate (-1,-1) (-3,-3)-3-(-1)
1. 2 answers
2. asked by jerson
3. 1,022 views
Draw and label a rectangle whose area is represented by the following expression; (x+1) (x+5). Then write an equivalent
1. 5 answers
2. asked by Ann
3. 1,021 views
Calculate the initial molarity of KNH2 and the molarities of K+, NH3, OH-, and H3O+ in an aqueous solution that contains 0.75 g
1. 2 answers
2. asked by Trixie
3. 1,018 views
We met at Nick's house before going out to eat.Proper Noun=Nick's Common noun=house Byron Elementay School has a day off
1. 2 answers
2. asked by Christopher
3. 1,001 views
A commercial resistor can safely dissipate power only up to a certain rated value. Beyond this value, the resistor becomes
1. 4 answers
2. asked by San
3. 999 views
Mercury is poured into the open end of a J-shaped glass tube, which is closed at the short end, trapping air in that end. How
1. 0 answers
2. asked by I
3. 984 views
1) RNA condons and amino acids: valine, proline, alaninea. GCGCGUGUG b. GUGCCUGCG c. GUUCCCACU d. GCUCUUGCU
1. 0 answers
2. asked by Toni
3. 977 views
Mercury is poured into the open end of a J-shaped glass tube, which is closed at the short end, trapping air in that end. How
1. 0 answers
2. asked by Isabel
3. 952 views
how will ocean energy be used
1. 1 answer
2. asked by Anonymous
3. 934 views
Can you tell me which of the following statements are correct? Thank you very much.1) For my main course I'd like grilled
1. 1 answer
2. asked by Franco
3. 930 views
the adaptations of land dwelling organisms for getting oxygen show a trade off of two needs. What are they?
1. 2 answers
2. asked by liz
3. 926 views
Hi guys, i get stuck with this question. Pls help. thanks so much. I know there are 4 atoms in FCC.A gold particle was measured
1. 2 answers
2. asked by kat
3. 915 views
How did the missouri compromise attempt to settle the debate over the future of slavery in the growing american republic?I have
1. 1 answer
2. asked by Lola
3. 914 views
What is the final temperature when 50.0 g of Chromium at 15 deg. C (specific heat of Cr = 0.107 cal/g-deg.) is added to 25 ml of
1. 1 answer
2. asked by Mary
3. 891 views
how do you factor problems like (w^3)(x^2)-(10w^3)(x)+25w^3?
1. 1 answer
2. asked by Dezy
3. 889 views
Could you check this for me and give me some ideas on how i could expand my writing?The Extra Yard Plus size women tend to make
1. 1 answer
2. asked by Trowers
3. 880 views
the wide looping curves which are found along parts of the courses of some rivers are called:a.meanders b.flood plains c.river
1. 3 answers
2. asked by Natalia
3. 861 views
#34. In two or three well-developed paragraphs, name and describe the five primary air pollutants and provide several sources of
1. 0 answers
2. asked by y912f
3. 839 views
Given: X, Y, and Z are the midpoints of the sides of triangle ABC. Find rhe ratio of the area of triangle XYZ to the area of
1. 0 answers
2. asked by TIMMYRA
3. 835 views
A mixture of gasses at a total pressure of 95 kPa contains N2, CO2, and O2. The partial pressure of the CO2, is 24 kPa and the
1. 1 answer
2. asked by Bob
3. 806 views
37. Hyphaea. increase the surface area-to-volume ratio of the fungus b. have slender filaments c. allow for efficient uptake of
1. 3 answers
2. asked by mysterychicken
3. 780 views
A horse is trotting along pulling a sleigh through the snow. To move the sleigh, of mass m, straight ahead at a constant speed,
1. 1 answer
2. asked by Max
3. 779 views
Mercury is poured into the open end of a J-shaped glass tube, which is closed at the short end, trapping air in that end. How
1. 0 answers
2. asked by Isabel
3. 779 views
Describe objects that have each of the following types of symmetry. Line, Point, Plane, 90° rotational
1. 1 answer
2. asked by alicia
3. 769 views
What is the length of the hypotenuse of the right angle ABC if AB = 5 and AC = 6
1. 2 answers
2. asked by Carol
3. 768 views
A dilute sulfuric acid solution that is 3.39 molality H2SO4 has a density of 1.18 g/mL. How many moles of H2SO4 are there in 375
1. 2 answers
2. asked by Nick
3. 765 views
What is responsible for earth's elliptical orbit around the sun?a. the gravitational pull of the sun b. magnetic forces both
1. 0 answers
2. asked by sadaf
3. 760 views
37. Hyphaea. increase the surface area-to-volume ratio of the fungus b. have slender filaments c. allow for efficient uptake of
1. 0 answers
2. asked by mysterychicken
3. 751 views
a 5.0-L flask contains 0.60 g 02 at a temperature off 22degrees C.what is the pressure (in atm) inside the flask?
1. 2 answers
2. asked by nujeen
3. 749 views
which of the following group of rockscan be easily dissolved in water? a,sandstone,granite and obsidian b.limestone,granite and
1. 0 answers
2. asked by Dina
3. 746 views
The nominal resistance R of the resistor used in this experiment was printed on the resistor by the manufacturer. According to
1. 3 answers
2. asked by Joseph
3. 736 views
find the equation (in slope intercept form) of the line with the given slope that passes through the point with the given
1. 0 answers
2. asked by jerson
3. 734 views
The Progressive Movement has been characterized as a movement that brought a sense of justice and morality to the American
1. 2 answers
2. asked by smeffy
3. 734 views
Has anyone seen the move "The Mighty", some people refer to it as "Freak the Mighty".I have a few questions on it, but before I
1. 3 answers
2. asked by Sara
3. 729 views
What were the conditions of the mines during the Industrial Reolution? Why did so many women want to work in the mines without
1. 1 answer
2. asked by James
3. 728 views
A runner training for a race times 400 meter laps. Lap 1 60sec, Lap 2 57sec, Lap 3 55sec, Lap 4 53sec. What is the average
1. 1 answer
2. asked by sadaf
3. 728 views
natural banks which are sometimes built up by a river along the edges of its channel are called:a.river bluffs b.river cliffs
1. 2 answers
2. asked by Dina
3. 718 views

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