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2011
March

Questions Asked on March 9, 2011

Determine the resulting temperature when 150g of ice at 0°C is mixed with 300g of water at 50°C
1. 11 answers
2. asked by aj
3. 8,930 views
Arrange the following aqueous solutions in order of increasing freezing points (lowest to highest temperature): 0.10 m glucose,
1. 4 answers
2. asked by Bianca
3. 8,822 views
what is the mole ratio of C5H12-> C5H8 + 2H2?
1. 2 answers
2. asked by dee
3. 4,317 views
An instrument store gives a 10% discount to all students off the original cost of an instrument. During a back to school sale an
1. 2 answers
2. asked by Anonymous
3. 4,048 views
Two radioactive isotopes are extracted from spent nuclear fuel and placed in a metal container, which is thensealed and
1. 5 answers
2. asked by Amanda.
3. 3,539 views
consider the equation for the following reaction at equilibrium. X+Y<-->2Z+heat the concentration of the product could be
1. 2 answers
2. asked by Jazmin F.
3. 3,407 views
Find the domain of the following function h(x,y) = sqrt(x-9y+5)?
1. 1 answer
2. asked by Z32
3. 3,111 views
A one-liter container completely filled with mercury has a mass of 13.6 kg and weighs 133.3 N. What is the buoyant force on the
1. 3 answers
2. asked by Ariannah
3. 2,825 views
Calculate the volume needed to dissolve 11.2g CuSO4 to prepare 0.140M?
1. 6 answers
2. asked by cris
3. 2,556 views
A recent survey found that 63% of all adults over 50 wear glasses for driving. In a random sample of 80 adults over 50, what is
1. 1 answer
2. asked by Anonymous
3. 2,540 views
How mny moles of Mg would you need to react with 2.5 moles of O2?
1. 1 answer
2. asked by dee
3. 2,532 views
The area of largest isosceles triangle that can be drawn with one vertex at the origin and with others on a line parallel to and
1. 1 answer
2. asked by Sal
3. 2,469 views
If x=yz, which of the following must be equal to xy?a. yz b. yz^2 c. y^2z d. z^2\y
1. 1 answer
2. asked by Bill
3. 2,424 views
A child and sled with a combined mass of 50.0 kg slide down a frictionless slope. If the sled starts from rest and has a speed
1. 2 answers
2. asked by Allie
3. 2,374 views
An old car is traveling down a long, straight, dry road at 25.0 m/s when the driver slams on the brakes, locking the wheels. The
1. 1 answer
2. asked by Amanda
3. 2,349 views
In a reversible reaction, chemical equilibrium is attained when ?1. Rate of the forward reaction is greater than the rate of the
1. 1 answer
2. asked by Jazmin F.
3. 2,322 views
What is the concentration of nitrate ions in a solution that contains M aluminum nitrate?
1. 2 answers
2. asked by Mm
3. 2,295 views
An object moves along the x-axis with a velocity of v(t) = sin(pi/3)t for time t greater than or equal to 0. What is the total
1. 1 answer
2. asked by Sandy
3. 2,230 views
what is the numerical value of the equilibrium constant Kgoal for the reaction CO2(g) C(s) +O2(g)? by making use of the
1. 2 answers
2. asked by gin - More info to initial question. Please help
3. 2,195 views
If a catalyst is added to a system at equilibrium and the temperature and pressure remain constantthere will be no effect on
1. 1 answer
2. asked by Jazmin F.
3. 2,191 views
The boiling point of phosphine, PH3(-88C) is lower than that of ammonia, NH3(-33C) even though phosphine has twice th molar mass
1. 1 answer
2. asked by MMPM
3. 2,148 views
You are designing dinnerware. What is the length of a side of the smallest square plate on which a 20-cm chopstick can fit along
1. 3 answers
2. asked by Alice
3. 2,144 views
2. When a 1.000 g sample of the rocket fuel hydrazine, N2H4, is burned in a bomb calorimeter which contains 1200g of water, the
1. 1 answer
2. asked by Johnny
3. 2,103 views
1) A piece of paraffin wax has a density of 9g/cm3, mass of 900g, and a volume of 100cm3. If the wax was melted to the liquid
1. 1 answer
2. asked by Alisha
3. 1,628 views
When a solution is diluted with water, the ratio of the initial to final volumes of solution is equal to the ratio of final to
1. 2 answers
2. asked by KRisten
3. 1,592 views
A daredevil on a motorcycle leaves the end of a ramp with a speed of 29.5 m/s as in the figure below. If his speed is 27.1 m/s
1. 1 answer
2. asked by Allie
3. 1,565 views
two balls of equal mass,moving with speeds of 5 meter/seconds,collide head on.find the velocity of each after impact if (a)they
1. 2 answers
2. asked by Jeff Rey
3. 1,524 views
a weak acid has a pKa of 6.0. what is the ratio of conjugate acid to conjugate base at pH 5?
1. 1 answer
2. asked by kabelo
3. 1,468 views
A 30 mL sample of 0.150 M KOH is titrated with 0.125 M HClO4 solution. Calculate the pH after the following volumes of acid have
1. 2 answers
2. asked by Melissa
3. 1,428 views
Determine whether the graph of each function is symmetric with respect to the origin.F(X)=-12/x
1. 1 answer
2. asked by emily
3. 1,415 views
IN 10 FREE THROWS, PAMELA MADE 3 SHOTS. WHAT IS THE EXPERIMENTAL PROBABILITY THAT PAMELA WILL MAKE HER NEXT FREE THROW?
1. 2 answers
2. asked by Jada
3. 1,373 views
In the approximation that the Earth is a sphere of uniform density, it can be shown that the gravitational force it exerts on a
1. 1 answer
2. asked by Amelie
3. 1,341 views
Can you please check these five sentences for me I find it difficult to correct.1)1984 can be considered (as) an anti-utopian
1. 2 answers
2. asked by Mike
3. 1,334 views
which description applies to a system in a sealed flask that is half full of water?(sorry about that) A. only evaporation
1. 1 answer
2. asked by Jazmin F.
3. 1,329 views
1) the ideal surface area of a rubber ball shipped from the factory is 50.25 square nches. the company inspector insists that
1. 1 answer
2. asked by anonymous
3. 1,305 views
Which of these characteristics is NOT found in the amphibians?
1. 1 answer
2. asked by Anonymous
3. 1,282 views
I forgot to include these last two sentences.1) Slaves worked either on sugar cane plantations (better of sugar cane) or in
1. 1 answer
2. asked by Mike
3. 1,277 views
Which sentence below has an underlined action verb?A. The poem "Easter Wings" is written in the form of wings. ("is" is
1. 7 answers
2. asked by anthony
3. 1,276 views
John DonneHOLY SONNETS 10 Death, be not proud, though some have called thee Mighty and dreadful, for thou art not so ; For
1. 0 answers
2. asked by anthony
3. 1,275 views
Differentiate.y= (cos x)^x u= cos x du= -sin x dx ln y = ln(cos x)^x ln y = x ln(cos x) (dy/dx)/(y)= ln(cos x) (dy/dx)= y ln(cos
1. 0 answers
2. asked by Chelsea
3. 1,262 views
There is an unknown amount of unlabelled monoprotic acid in an unknown amount of water titrated with a sample with a solution of
1. 2 answers
2. asked by Ben
3. 1,239 views
3. Suppose a ladder is 12 ft. long. The base of the ladder is 5 ft. from a wall, and the top of the ladder is leaning against
1. 2 answers
2. asked by joan
3. 1,237 views
I am supposed to find when there will be 40 berry bushes. I am given the function p(t)=(16t+50t^3)^1/3. P is the population of a
1. 2 answers
2. asked by Lauren
3. 1,222 views
Which of the countries listed below receives the most rainfall?A) Somalia B) Namibia C) Democratic Republic of Congo D) Central
1. 3 answers
2. asked by Kaitlin
3. 1,221 views
How many grams do 5.2×10^20 atoms of silicon weigh?Answer in units of g.
1. 4 answers
2. asked by Bob
3. 1,178 views
A Gallup Poll asked, "In general, how often do you experience stress in your daily life - never, rarely, sometimes, or
1. 0 answers
2. asked by brian
3. 1,153 views
A box is lifted with a pry bar, by slipping the bar under the box and lifting up on the bar. If the pry bar is 2m in length and
1. 3 answers
2. asked by DMITRIC
3. 1,149 views
On a dry road, a car with good tires may be able to brake with a constant deceleration of 4.17 m/s2. (a) How long does such a
1. 1 answer
2. asked by john
3. 1,139 views
if gunnar gives me a cookie, i will have twice as many cookies. if i give gunnar a cookie, we will have the same number of
1. 2 answers
2. asked by jockalyn quswbey
3. 1,125 views
A plank of uniform construction 5 metres in length and of mass 25kg. is balanced on a sawhorse stand which acts as a fulcrum. a
1. 0 answers
2. asked by DMITRIC
3. 1,121 views
laura has a roll of ribbon there are 29 yards of ribbon on the roll what equation can laura use to find the number of inches of
1. 2 answers
2. asked by z
3. 1,120 views
A 30 mL sample of 0.150 M KOH is titrated with 0.125 M HClO4 solution. Calculate the pH after the following volumes of acid have
1. 1 answer
2. asked by Melissa
3. 1,118 views
How many grams of sodium chloride are needed to prepare 250 mL of a 2% solution?
1. 3 answers
2. asked by Mona
3. 1,093 views
How many moles of ammonia gas can be produced from the reaction of 3.0L of N2 and 3.0L of H2 according to the following
1. 1 answer
2. asked by jerome
3. 1,068 views
How do you do a resume? and could someone show me how to go about starting a resume?
1. 1 answer
2. asked by Betty
3. 1,058 views
What is the acceleration (in meters/second^2) of a freely falling 74.0 kg sky-diver, if air resistance exerts a force of 264 N?
1. 1 answer
2. asked by nm
3. 1,056 views
A segment 12" long is divided into two segments having lengths in the ratio of 2:3. Find the length of each segment. (Hint: Let
1. 1 answer
2. asked by terri
3. 1,055 views
What is simple predicate?These insects are strange and amazing creatures. Would it be are?
1. 3 answers
2. asked by Wesley
3. 1,046 views
An inflated balloon occupies a volume of two (2) liters. The balloon is tied with a string and weighted down with a heavy stone.
1. 3 answers
2. asked by Ariannah
3. 1,041 views
A segment is divided into two parts having lengths in the ratio of 5:3. If the difference between the length of the parts is 6,"
1. 1 answer
2. asked by terri
3. 1,040 views
A ball moving with a speed of 26 m/s strikes an identical ball that is initially at rest. After the collision, the incoming ball
1. 2 answers
2. asked by martin
3. 1,023 views
I am a little confused about kinetic and potential energy regarding roller coasters. I understand that the first hill has to be
1. 2 answers
2. asked by Paul
3. 1,021 views
My aunt works at Woods Hole as a scientist.What are the nouns in the sentence? Is is aunt, Woods hole and scientist?
1. 3 answers
2. asked by Wesley
3. 1,020 views
How much heat is absorbed by an electric refrigerator in charging 2 Kg of water at 15°C to ice at 0°C?
1. 1 answer
2. asked by aj
3. 998 views
Suppose a certain type of deciduous tree releases 7500 leaves on average each fall. If the average mass ofeach leaf is 1.7 g and
1. 2 answers
2. asked by Olivia
3. 985 views
Water ﬂows over a section of Niagara Falls at a rate of 1.43 × 10^6 kg/s and falls 62.5 m. The acceleration of gravity is 9.8
1. 1 answer
2. asked by johana
3. 955 views
A proton with a speed of 3.5 × 106 m/s is shot into a region between two plates that are separated by a distance of 0.23 m. As
1. 1 answer
2. asked by Anonymous
3. 931 views
Suppose that the proportion of students who used the Internet as their major resource for school in the past was 66%. A sample
1. 0 answers
2. asked by Adam
3. 919 views
Hello!Which expression do you use the most in English? Don't take amiss to me or something similar? I am looking for a verb but
1. 4 answers
2. asked by Mark
3. 912 views
A car is driven east for a distance of 44 km, then north for 25 km, and then in a direction 27° east of north for 28 km.
1. 1 answer
2. asked by keef lam
3. 911 views
The ratio of dimes to nickels in jan's change box is 2/3. jan has 75 cents in nickles. how many nickes does jan have? 15? would
1. 1 answer
2. asked by jill
3. 900 views
How many atoms of carbon are present in31.4 g of a compound that is 16.2% carbon, by weight? Answer in units of atoms.
1. 1 answer
2. asked by Jackson
3. 896 views
Find the length of the altitude of an isosceles triangle if one side has a length of 20 ft and a base of 14 ft?
1. 3 answers
2. asked by Jay
3. 896 views
can anyone help with art/101 final
1. 1 answer
2. asked by Anonymous
3. 885 views
The ratio of the distances a 7-iron and a 5-iron will drive a golf ball is 5 to 6. If a golfer averages 153 yards with a 7-iron
1. 1 answer
2. asked by anonymous
3. 880 views
Your Porsche's gas mileage (in miles per gallon) is given as a function M(x) of speed x in miles per hour. It is found thatM'(x)
1. 0 answers
2. asked by Beth
3. 874 views
How many degrees does the hour hand move in 4 hours?
1. 10 answers
2. asked by Kristiana
3. 874 views
Brookes quiz scores are as followed;12/20, 12/18, 85%, 5/10 What is the order from least to greatest of the scores?
1. 1 answer
2. asked by marshal
3. 873 views
i posted this before but no one answered. please help me:A net force of 1.6×10−15 N acts on an electron over a displacement
1. 1 answer
2. asked by jamaisa
3. 868 views
The current through a light bulb connected across the terminals of a 120 V outlet is 0.25 A. At what rate does the bulb convert
1. 0 answers
2. asked by nkechi
3. 866 views
Simple predicate?The history of these pests may surprise you. Would it be may?
1. 3 answers
2. asked by Wesley
3. 863 views
A projectile is launched at an angle of 60 degrees to the horizontal from 6.5 ft above the ground at an initial speed of
1. 0 answers
2. asked by Z32
3. 851 views
uvw=xyz if so name the postulate that applies
1. 3 answers
2. asked by bob
3. 851 views
A pickling solution is prepared by dissolving 278 g of NaCl in 4-1 L of water. Calculate the osmolarity of the solution
1. 3 answers
2. asked by bob
3. 838 views
The medians of the legs of a right triangle are 3 square root 6 and 6. What is the length of the hypotenuse?
1. 1 answer
2. asked by Me too
3. 834 views
I want to thank you for all the help, I just found this sight today. I think that you and the sight are realy COOL!!!!! thanks
1. 1 answer
2. asked by Annie
3. 823 views
1. He got into college last year.2. He went into college last year. 3. He got to college last year. 4. He went to college last
1. 4 answers
2. asked by rfvv
3. 821 views
A 0.110 kg baseball, traveling 32.0 m/s, strikes the catcher's mitt, which recoils 14.0 cm in bringing the ball to rest. What
1. 0 answers
2. asked by nm
3. 818 views
1. The interaction between a child's biological makeup and the environmental influences that affect his or her development and
1. 4 answers
2. asked by Rachel
3. 812 views
when a kayak races downstreamm, its speed is clocked at 3 m/s. How far does the kayak travel in 35 s? in 1 hour?
1. 1 answer
2. asked by Sydney
3. 794 views
If a triangle side lengths of 12 cm, 35 cm, and 37 cm, what type of angle is it?
1. 1 answer
2. asked by sandy
3. 765 views
How much work does gravity do on a 0.0150kg ball falling from a height of 10.0m
1. 2 answers
2. asked by Anonymous
3. 761 views
A book weighing 29 N is placed on a table. if the support force back on the book from the table is 29 N, what is the net force?
1. 1 answer
2. asked by Emily
3. 757 views
A mixture containing CH3OH, HF, CH3F, and H2O, all at an initial partial pressure of 1.04 atm, is allowed to achieve equilibrium
1. 1 answer
2. asked by Colin
3. 754 views
I need to state the period and 2 consecutive asymptotes on the graph for the following questions.1: y = -3 tan pi*x period: pi
1. 1 answer
2. asked by Michael
3. 749 views
A plank of uniform construction 5 metres in length and of mass 25kg. is balanced on a sawhorse stand which acts as a fulcrum. a
1. 0 answers
2. asked by JACKSON
3. 749 views
scale drawing of a right triangle, base= 4ft, height= 2 ft, scale = 1/2 inches = 2ft, finf the area of the scale drawing.
1. 2 answers
2. asked by helen mimis
3. 749 views
Dear Sir;I am writing in response to your request for additional information in Block #3 of the accident reporting form. I put
1. 0 answers
2. asked by plz help asap
3. 743 views
Martin takes out a simple-interest loan at 7.5 %. After 6 months, the amount of interest on the loan is $69.64. What was the
1. 1 answer
2. asked by anonymous
3. 738 views
a pick machine affixes a
1. 4 answers
2. asked by amanda
3. 736 views

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