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Questions Asked on October 28, 2012

calculate the change in pH when 9.00ml of 0.100M HCl(aq) is added to 100.0mL of a buffer solution that is 0.100M in NH3(aq) and
1. 1 answer
2. asked by mike
3. 11,218 views
The organic compound di-n-butyl phthalate, C16H22O4(l), is sometimes used as a low-density (1.046 g·mL–1) manometer fluid.
1. 3 answers
2. asked by Garcia
3. 10,396 views
1. 48 c = __ qt (1 point)6 8 10 12 2. 96 oz __ 5 lb (1 point) < > = 3. 6 yd, 1 ft = __ ft (1 point) 7 12 19 36 4. lb = __ oz (1
1. 34 answers
2. asked by peter
3. 6,966 views
c)The price (in dollars) p and the quantity demanded q are related by the equation: p2+2q2=1100.If R is revenue, dR/dt can be
1. 1 answer
2. asked by chamberlain
3. 6,045 views
How many kilojoules of heat are released when 38.6g of CH4 reacts completely with O2 to form CH3OH at constant pressure?
1. 3 answers
2. asked by Jamie
3. 5,868 views
Determine the maximum number of electrons that can have each of the following designations.2f,1Py,2Pz,5dyz,6f
1. 4 answers
2. asked by Farha
3. 5,796 views
during a sale at the local department store, you buy three sweatshirts and two pairs of sweatpants for $85.50. later you return
1. 3 answers
2. asked by Katelyn
3. 5,160 views
Container A holds 752 mL of ideal gas at 2.40 atm. Container B holds 179 mL of ideal gas at 4.80 atm. If the gases are allowed
1. 6 answers
2. asked by Garcia
3. 4,382 views
Each base of an isosceles triangle measures 42 degrees, 30'. The base is 14.6 meters long.a. Find the length of a leg of the
1. 1 answer
2. asked by Sofia
3. 4,294 views
Points A and B are separated by a lake. To find the distance between them, a surveyor locates a point C onland such that ÐCAB =
1. 1 answer
2. asked by glenna
3. 4,131 views
what is the Sample Locality Age (Million years)in Granite: Scottish Highlands, Gabbro: Sudbury Canada and Gneiss: Greenland?
1. 6 answers
2. asked by john
3. 3,205 views
The drawing shows an intravenous feeding. With the distance of 0.610 m, nutrient solution (ρ = 1010 kg/m3) can just barely
1. 1 answer
2. asked by Cat
3. 3,095 views
a firecracker is fired from the ground. The height of the firecracker at a given time is modeled by the function h(t)
1. 1 answer
2. asked by Rutba
3. 3,056 views
If a projectile is fired with velocity v0 at an angle θ, then its range, the horizontal distance it travels (in feet), is
1. 2 answers
2. asked by Ama
3. 2,945 views
Liquid butane, C4H10, is stored in cylinders, to be used as a fuel. The normal boiling point of butane is listed as -0.5 C. (a)
1. 2 answers
2. asked by Harry
3. 2,741 views
The blades of a ceiling fan have a radius of 0.348 m and are rotating about a fixed axis with an angular velocity of +1.63
1. 1 answer
2. asked by Sam
3. 2,589 views
Suppose that when pizza dough is rolled out it costs 25 cents per square foot, and that sauce and cheese when spread out on a
1. 2 answers
2. asked by Chelsea
3. 2,086 views
Kim Davis has decided to purchase a cellular phone, but she is unsure about which rate plan to select. The "regular" plan
1. 1 answer
2. asked by Lisa
3. 1,918 views
The drawing shows two frictionless inclines that begin at ground level (h = 0 m) and slope upward at the same angle θ. One
1. 1 answer
2. asked by Tim
3. 1,897 views
given the density of helium is 0.1785g/cm3 and the density of argon is 1.784g/cm.3 estimate the density of neon
1. 1 answer
2. asked by Jessa
3. 1,802 views
A railroad car of mass 2.7 104 kg moving at 3.50 m/s collides and couples with two coupled railroad cars, each of the same mass
1. 2 answers
2. asked by heather
3. 1,735 views
A nonuniform 2.0-kg rod is 2.0 m long. The rod is mounted to rotate freely about a horizontal axis perpendicular to the rod that
1. 1 answer
2. asked by Anonymous
3. 1,627 views
An unknown mass of each of the following substances, initially at 23.0C, absorbs 1910 J of heat. The final temperature is
1. 1 answer
2. asked by Amy
3. 1,467 views
Use a Double- or Half-Angle Formula to solve the equation in the interval [0, 2π). (Enter your answers as a comma-separated
1. 2 answers
2. asked by Ama
3. 1,426 views
If 25.0mL of 0.56 M H2SO4 is diluted to a volume of 125 mL, what is the molarity of the resulting solution?
1. 3 answers
2. asked by katie
3. 1,415 views
A game consists of tossing two coins, first a dime and then a nickel. For each coin which comes up a head you win the value of
1. 2 answers
2. asked by carmen, please help!!
3. 1,397 views
how you could separate the components of a mixture of PbCL and NaSO and recover the two substances
1. 2 answers
2. asked by Tina
3. 1,342 views
If f(x)=3x^2-5x, find the f'(2) & use it to find an equation of tangent line to the parabolay=3x^2-5x at the point (2,2). My ans
1. 1 answer
2. asked by Ifi
3. 1,288 views
A 8.52 -kg block of metal is suspended from a scale and immersed in water as in Figure P9.30. The dimensions of the block are
1. 1 answer
2. asked by Emily
3. 1,268 views
A child in danger of drowning in a river is being carried downstream by a current that has a speed of 2.10 km/h. The child is
1. 0 answers
2. asked by anusha
3. 1,264 views
Suppose that the spool is 1m long and has an inner diameter of 20 cm and an outer diameter of 60 cm. Approximately, how long a
1. 0 answers
2. asked by Chelsea
3. 1,264 views
Why do humans use running shoes, winter boots, snowshoes, skis and flippers? Why are these not biological adaptations? Use
1. 4 answers
2. asked by Ruby
3. 1,254 views
I know that to calculate the specific rotation for a compound you doobserved rotation / path length(dm) * conc. (g/ml). I am
1. 6 answers
2. asked by Hannah
3. 1,209 views
A rubber ball is dropped from an unknown height. It bounces back to 60% of its original height. Write an equation you can use to
1. 0 answers
2. asked by Dene'
3. 1,182 views
A 150mL sample of 0.45 M HNO3 is diluted to 450 mL. What is the molarity of the resulting solution?
1. 1 answer
2. asked by katie
3. 1,106 views
The probability that a person catches a cold during the cold and flu season is 0.62. Assume that 5 people are chosen at random.A
1. 1 answer
2. asked by agak
3. 1,044 views
What is Cold FusionMX and how would you accommodate on a Windows 2000 server?
1. 0 answers
2. asked by Ann
3. 1,039 views
A rectangular table top measures 7 / 9 of a meter long by 2 / 9 of a meter wide. What is the area
1. 1 answer
2. asked by Tamara
3. 1,038 views
an object on an inclined ramp of mass 1.39kg. The angle of the inclined surface is 29deg with the horizontal. The object on the
1. 0 answers
2. asked by Angie
3. 1,034 views
Assume that the average annual salary for a worker in the United States is $30,500 and that the annual salaries for Americans
1. 1 answer
2. asked by Michael
3. 1,011 views
You are at the controls of a particle accelerator, sending a beam of 2.40×107 protons (mass ) at a gas target of an unknown
1. 1 answer
2. asked by HANNE
3. 998 views
In the topic of centre of gravity why is it difficult to topple a doll in a circular base.
1. 0 answers
2. asked by Juanita
3. 995 views
Analyze the following scenario: River County is planning several capital acquisitions for the coming year. These include the
1. 1 answer
2. asked by Anonymous
3. 928 views
AluminiCorp is a major producer of aluminum cans that produces 40 billion aluminum cans every year. You work as a quality
1. 1 answer
2. asked by Anonymous
3. 923 views
To what volume must 25.0mL of 18.0M H2SO4 be diluted to produce 1.50 M H2SO4?
1. 1 answer
2. asked by katie
3. 922 views
Reduce this equation using the quadratic formula, factoring, or other algebraic method to determine the other zeros of the
1. 1 answer
2. asked by Ash
3. 895 views
A horizontal wire that runs east-west carries a steady current to the east. A C-shaped magnet is placed so that the wire runs
1. 2 answers
2. asked by Ashley
3. 886 views
need help with this problem :/A circular coil (980 turns, radius = 0.078 m) is rotating in a uniform magnetic field. At t = 0 s,
1. 0 answers
2. asked by derek
3. 883 views
An air mattress is 2.36 m long, 0.640 m wide, and 12.2 cm deep. If the air mattress itself has a mass of 0.252 kg, what is the
1. 1 answer
2. asked by EMM
3. 870 views
Write an equation that has (2,6) as a solution. Explain how you found the equation.
1. 2 answers
2. asked by Maryam :)
3. 858 views
Two persons are to run a race, but one can run 10 meters per second, whereas the other can run 6 meters per second. If the
1. 1 answer
2. asked by Anonymousjm
3. 837 views
You are at the controls of a particle accelerator, sending a beam of 2.40×107 protons (mass ) at a gas target of an unknown
1. 1 answer
2. asked by HANNE
3. 809 views
Write a method main that demonstrates class Employee's capabilities bycreating two Employee objects. Initialize one of the
1. 0 answers
2. asked by sim
3. 804 views
Why do human beings use running shoes, winter boots, snowshoes, skis and flippers? Why are these not biological adaptations? Use
1. 17 answers
2. asked by emily
3. 802 views
1. The slope of the tangent line to a function at a point is equivalent to __.a. the slope of the secant at that point b. the
1. 1 answer
2. asked by hnc
3. 792 views
Arrange the following compounds in order of increasing ease of elution from an activated alumina column:a. Cyclohexane b. Butyl
1. 1 answer
2. asked by Susan
3. 790 views
In “Do Not Go Gentle into That Good Night,” Dylan Thomas urged his father to resist (1 point)aging. despair. quitting.
1. 2 answers
2. asked by Anastasia
3. 781 views
the region bounded by the quarter circle (x^2) + (y^2) =1. Find the volume of the following solid.The solid whose base is the
1. 1 answer
2. asked by mike
3. 780 views
Two pumps can fill a water tank in 256 minutes when working together. Alone, the second pump takes times as long as the first to
1. 1 answer
2. asked by tiffany
3. 772 views
You are on a train that is traveling at 3.0 m/s along a level straight track. Very near and parallel to the track is a wall that
1. 0 answers
2. asked by tim
3. 750 views
-15-√-18/33
1. 1 answer
2. asked by Jackie
3. 736 views
Why do clouds form behind the moving cold front?
1. 1 answer
2. asked by dorothy morlan
3. 736 views
Determine the stopping distance for a skier moving down a slope with friction with an initial speed of 20.6m/s. Assume μk=0.178
1. 0 answers
2. asked by Angie
3. 735 views
The drawing shows two boxes resting on frictionless ramps. One box is relatively light and sits on a steep ramp. The other box
1. 1 answer
2. asked by greg
3. 730 views
Gonorrhea is spread through contact with the ________.A. Anus, , Mouth, Skin B. , Anus, Mouth, C. , Skin, , Anus D. Mouth, , ,
1. 4 answers
2. asked by Marissa
3. 726 views
1. How much work or energy (in J) does a 150 W light bulb convert to heat and light in 1.0 h?2.The force of gravity on a box of
1. 2 answers
2. asked by HanuP28O
3. 709 views
why will Na2CO3 + AgNO3 create a percipitate? I thought that one of the compounds has to be insoluble for it to form a
1. 5 answers
2. asked by rebekah
3. 709 views
Show that 480 W of power is expended by a weightlifter when lifting a 60-kg barbell a vertical distance of 1.2 m in a time
1. 2 answers
2. asked by Cecilia
3. 703 views
The El Paso Middle School girls' basketball team is going from El Paso to San Antonio for the Texas state championship game. The
1. 2 answers
2. asked by Jason
3. 701 views
a fair of die is tossed 180 times. Find the probability P that the face 6 will appear between 29 and 32 times inclusive?
1. 0 answers
2. asked by vilma
3. 697 views
A railroad car (m=3000 kg) is coasting along a level track with an initial speed of 22 m/s. A load of coal is then dropped into
1. 0 answers
2. asked by David
3. 685 views
Use the Factor Theorem to determine the rational zeros of this function. Then use other methods to determine any other zero of
1. 1 answer
2. asked by Nikki
3. 683 views
1/3 . 7 help me plss is it gonna be 7/1 or 1/7
1. 1 answer
2. asked by help me
3. 679 views
The differential gear of a car axle allows the wheel on the left side of a car to rotate at a different angular speed than the
1. 2 answers
2. asked by Sam
3. 679 views
A company makes tennis and squash rackets. Each tennis racket requires two units of aluminum and one unit of nylon. Each squash
1. 1 answer
2. asked by garnel
3. 675 views
A block slides down a frictionless plane having an inclination of 18.9deg. If the block starts from rest at the top and the
1. 0 answers
2. asked by joane
3. 666 views
the midpoint of the line segment from p1 to p2 is (-1,3). if p1=(-6,7) what is p2?
1. 1 answer
2. asked by ladybug
3. 660 views
The particles in the figure below (m1=1.6 kg and m2=3.5 kg) undergo an elastic collision in one dimension. Their velocities
1. 0 answers
2. asked by David
3. 656 views
Okay so here is the questionSuppose you are an official in an Eastern European nation. Write a letter to a major manufacturer in
1. 1 answer
2. asked by Blake
3. 653 views
A student finds that 22.06 mL of 0.7270 M lead nitrate is needed to precipitate all of the iodide ion in a 50.00-mL sample of an
1. 1 answer
2. asked by Anonymous
3. 638 views
the drive-rite insurance company provides automobile insurance policies for drivers. design a FLOWCHART for the following:
1. 0 answers
2. asked by GLENN
3. 636 views
I have to make a thesis statement for my essay I have made one but it's not good enough. It has to be 25 words or less and be
1. 5 answers
2. asked by Katelynn
3. 628 views
An airplane traveling 1007 m above the ocean at 150 km/h is going to drop a box of supplies to shipwrecked victims below.(a) How
1. 1 answer
2. asked by denise
3. 624 views
A 8.52 -kg block of metal is suspended from a scale and immersed in water as in Figure P9.30. The dimensions of the block are
1. 0 answers
2. asked by EMM
3. 616 views
This is a homework question and I have no idea what I'm doing wrong.A heavy sled is being pulled by two people as shown in the
1. 0 answers
2. asked by Jamey
3. 609 views
A 4165.0kg truck is parked on a 15.8deg slope. What is the friction force on the truck?
1. 2 answers
2. asked by joane
3. 607 views
The combined area of New York and California is 204,192 square miles. The area of California is 108,530 square miles more than
1. 1 answer
2. asked by Anonymousjm
3. 604 views
IFE,F,G,H ARE RESPECTIVELY THE MID POINTS OF THE SIDE OF A PARALLELOGRAM ABCD SHOW THAT AREA OF EFGH IS EQUAL TO HALF AREA OF
1. 0 answers
2. asked by VIKASH KUMAR GUPTA
3. 597 views
How many milliliters of 0.524 M HNO3 contain 3.13 g HNO3?
1. 1 answer
2. asked by bebo
3. 588 views
Two masses of 3.40kg and 4.55kg are connected by a light string that passes over a frictionless pulley. Determine the tension in
1. 0 answers
2. asked by Angie
3. 584 views
bubbles initially forms and escapes down the bottom of the glass in the rising water experiment. What gas is responsible for
1. 4 answers
2. asked by Draden
3. 576 views
A ray of light is incident at an angle of 20degrees to the normal on one face of an equilateral prismm made in glass of
1. 1 answer
2. asked by Please help- Elena
3. 572 views
A wireless phone company charges a monthly fee of $39.99 plus $0.49 per minute for usage that exceeds the included minutes.
1. 2 answers
2. asked by Maryam :)
3. 569 views
A quarterback throws the football to a stationary receiver who is 19.7 m down the ﬁeld. The football is thrown at an initial
1. 0 answers
2. asked by JASPER
3. 565 views
What focal-length lens would you need to place next to a converging lens of focal length 29 cm to create an effective focal
1. 0 answers
2. asked by Jeanette
3. 558 views
How to differentiate f(x)=e^(xlnx)?I get f'(x)=e^(xlnx) (1+lnx) while at wolfram is x^x(ln x+x)...sorry for my miscalculation /
1. 1 answer
2. asked by Ifi
3. 554 views
A bullet of mass m=0.060 kg hits a 5.0 kg block with an initial speed of 225 m/s. The block is connected to a spring that is
1. 4 answers
2. asked by Rob
3. 542 views
As Bridget is walking through a parking lot, a bicyclist swerves toward her. Her heart races and sweat breaks out as she jumps
1. 3 answers
2. asked by justin
3. 532 views
Wildlife biologists fire 20kg rubber bullets to stop a rhinoceros charging at 0.83m/s. The bullets strike the rhino and drop
1. 0 answers
2. asked by Jcota2
3. 531 views
dx/dy cos x sin y + x^5 = 11i got dx/dy= (-cos x cos y)/ (-sin x sin y +5x^4) But the wolfram got (1- cos x cos y)/(5x^4-sin y
1. 3 answers
2. asked by Ifi
3. 524 views

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