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Questions Asked on October 7, 2010

How many moles of n2 are needed to react with 0.500 mol of lithium
1. 3 answers
2. asked by Sharon
3. 8,144 views
A block of ice of mass 4.10 kg is placed against a horizontal spring that has force constant k = 210 N/m and is compressed a
1. 5 answers
2. asked by ami
3. 6,507 views
An unmarked police car traveling a constant 95 km/h is passed by a speeder traveling 120 km/h.Precisely 1.00 sec. after the
1. 4 answers
2. asked by Michael
3. 5,188 views
My problem question:"A ball is thrown up onto a roof, landing 4.0 seconds later at a height of 20.0 m above where it was thrown.
1. 2 answers
2. asked by Thuy
3. 3,832 views
Volume (cm3 Area(cm2) Thickness (cm).20 cm3 100 cm2 0.002 cm .28 cm3 122 cm2 0.002 cm .24 cm3 144 cm2 0.017 cm .41 cm3 225 cm2
1. 1 answer
2. asked by Anonymous
3. 3,371 views
Obtain exponential functions in the form f(t) = Aert, if f(t) is the value after t years of a $9,000 investment depreciating
1. 1 answer
2. asked by liz
3. 3,204 views
Two locomotives approach each other on parallel tracks. Each has a speed of v = 95 km/h with respect to the ground. If they are
1. 1 answer
2. asked by julie
3. 3,146 views
Identify the Oxidizing agent and the reducing agent for Al(s)+3Ag^+(aq)--->Al^3+(aq)+3Ag(s)Express your answers as chemical
1. 1 answer
2. asked by Kaylee
3. 3,092 views
A ladder 10 ft long rests against a vertical wall. let θ be the angle between the top of the ladder and the wall and let x be
1. 2 answers
2. asked by Sasha
3. 2,851 views
The Cu2+ ions in this experiment are produced by the reaction of 1.0 g copper turnings with excess nitric acid. How many moles
1. 2 answers
2. asked by Maggie
3. 2,784 views
A descending elevator of mass 670 kg is uniformly decelerated to rest over a distance of6 m by a cable in which the tension is
1. 5 answers
2. asked by christine
3. 2,538 views
A 6-kg clay ball is thrown directly against a perpendicular brick wall at a velocity of 22 m/s and shatters into three pieces,
1. 8 answers
2. asked by Tim
3. 2,277 views
You have a stock solution of 16.0 M {{NH}}3. How many milliliters of this solution should you dilute to make 1500 mL of 0.200 M
1. 1 answer
2. asked by Veronica
3. 2,223 views
Consider two closed systems A and B. System A contains 3000 kJ of thermal energy at 20°C, whereas system B contains 200 kJ of
1. 1 answer
2. asked by sandhya
3. 2,198 views
The ΔH per mole of CaCl2 is -81.0 kJ. Calculate the final temperature of an aqueous solution if 30 g of CaCl2 are added to 100
1. 1 answer
2. asked by Felicia
3. 2,137 views
Sheila's age is two years more than twice Nicole's age. The sum of their ages is the same as Steven's age. If Steven's age is
1. 6 answers
2. asked by jj
3. 2,050 views
Which of the following pairs of elements are likely to form an ionic compound?lithium and chlorine sodium and potassium
1. 1 answer
2. asked by Jennifer
3. 1,889 views
Studies indicate that the price elasticity of demand for cigarettes is about0.4. If a pack of cigarettes currently costs $4 and
1. 1 answer
2. asked by Claudia
3. 1,786 views
round to the nearest thousand, nearest hundred, nearest ten 8999
1. 6 answers
2. asked by kim
3. 1,726 views
A ladder 10 ft long rests against a vertical wall. let θ be the angle between the top of the ladder and the wall and let x be
1. 1 answer
2. asked by Sasha
3. 1,693 views
how many moles of oxygen are consumed in burning 1.6 moles of benzene, C6H6?
1. 4 answers
2. asked by Kim
3. 1,669 views
The drawing shows a version of the loop-the-loop trick for a small car. If the car is given an initial speed of 4.5 m/s, what is
1. 1 answer
2. asked by Dawn
3. 1,626 views
Determine whether the following statements are always,sometime, or never true.Explain1.Three points determine a plane. 2.The
1. 1 answer
2. asked by Shadow
3. 1,623 views
If the area of a square is 9x2-12xy+4y2, what is the perimeter of the square in terms of x and y.*its 9x squared and 4y squared
1. 1 answer
2. asked by Emily
3. 1,622 views
A firefighter stood on the middle rungs of a ladder ,spraying water on a burning house. He then climbed up 6 rungs before the
1. 3 answers
2. asked by Thanh
3. 1,609 views
Consider two identical rooms, one with a refrigerator in it and the other without one. If all the doors and windows are closed,
1. 3 answers
2. asked by sandhya
3. 1,550 views
Determine whether the point (1, 8) is a solution of the system2x + 6y = 50 10x + 0y = 10 by substituting the point into each
1. 2 answers
2. asked by Jordan
3. 1,481 views
A firefighter stood on the middle rungs of a ladder ,spraying water on a burning house. He then climbed up 6 rungs before the
1. 3 answers
2. asked by Thanh
3. 1,448 views
7. In the Adams-Onis Treaty of 1819,a. the US doubled its size b. the Cherokees settled their dispute with the American
1. 3 answers
2. asked by mysterychicken
3. 1,356 views
A billiard ball of mass m = 0.250 kg hits the cushion of a billiard table at an angle of θ1 = 63.4° at a speed of v1 = 24.8
1. 1 answer
2. asked by Alex
3. 1,354 views
Consider the following events: Scientists reveal that consumption of oranges decreases the risk of diabetes and, at the same
1. 1 answer
2. asked by Anonymous
3. 1,348 views
how many grams of metallic copper are required to react with the number of moles of Cu2+ , 0.16mol, to form CuCl overall
1. 1 answer
2. asked by Maggie
3. 1,341 views
Mixed nuts. Oh Nuts! sells pistachio kernels for $6.50 per pound and almonds for $8.00 per pound. How much of each type should
1. 2 answers
2. asked by Lyri
3. 1,335 views
Round to the nearest thousand, nearest hundred, and the nearest ten7509
1. 1 answer
2. asked by kim
3. 1,326 views
Find the critical numbers of the function g(t)=|5t-7|If you find g'(t) you just get 5 so would there be no critical numbers? Or
1. 1 answer
2. asked by Calculus
3. 1,292 views
A ball of mass 0.540 kg moving east (+x direction) with a speed of 3.30 m/s collides head-on with a 0.740 kg ball at rest. If
1. 3 answers
2. asked by ami
3. 1,279 views
find the surface area of a right prism with the given features: The bases are trapezoids with bases of lengths 6 and 10
1. 1 answer
2. asked by Sam
3. 1,270 views
A car starts from rest and accelerates uniformly over a time of 6.5 seconds for a distance of 150 m. Determine the acceleration
1. 2 answers
2. asked by CJ
3. 1,244 views
At a construction site a pipe wrench struck the ground with a speed of 45 m/s. (a) From what height was it inadvertently
1. 3 answers
2. asked by monnie
3. 1,227 views
Imagine you are expected to write a three-page paper. Design an organizational and time management plan to complete this paper.
1. 1 answer
2. asked by Anonymous
3. 1,223 views
If you take a 10.0-{mL} portion of the stock solution and dilute it to a total volume of 0.700 L, what will be the concentration
1. 2 answers
2. asked by Veronica
3. 1,214 views
Romeo is tossing pebbles at Juliet's window and wants the pebbles to hit the window gently, with only a horizontal component to
1. 0 answers
2. asked by Cristina
3. 1,205 views
The product of two consectuve even numbers is 360. Find the numbers.I tried this: x+(x+2)=360 2x+2=360 x=179, which would mean
1. 2 answers
2. asked by Anonymous
3. 1,201 views
A 1.50 multiplied by 103 kg car starts from rest and accelerates uniformly to 19.9 m/s in 11.6 s. Assume that air resistance
1. 1 answer
2. asked by bk
3. 1,195 views
Experiment 10: Which Fuels provide the most heat?There are many possible sources of error in this experiment. List three that
1. 0 answers
2. asked by Megan
3. 1,188 views
For f(x) = 2x-3 and g(x)= 2x^2 find,a) (f + g)(x) = My answer is 2x^2 + 2x - 3. Is this correct? b) (f - g)(x) How would you do
1. 2 answers
2. asked by Hannah
3. 1,167 views
Statement: If a number is divisible by 2 and by 3, then it is divisible by 6 and vice versa. Is this statement true? Give an
1. 1 answer
2. asked by m
3. 1,143 views
A book has N consecutive pages torn out. Suppose A is the last numbered page before the torn out section and B is the forst
1. 1 answer
2. asked by Joe
3. 1,138 views
A hockey puck with mass 0.237 kg traveling along the blue line (a blue-colored straight line on the ice in a hockey rink) at 1.4
1. 2 answers
2. asked by Jeremiah
3. 1,135 views
Please correct me if any wrong info is givenVolume(cm3)Area (cm2)Thickness (cm) .20 cm3 100 cm2 0.02 cm .28 cm3 122 cm2 0.002 cm
1. 1 answer
2. asked by Anonymous
3. 1,135 views
A brick border that is x feet wide is built around a rectangular patio. The patio is 6 feet wide and 8 feet long. The combined
1. 0 answers
2. asked by Emily
3. 1,127 views
List words that give you trouble when writing. If you don’t have any, list words that challenge your spelling ability.
1. 1 answer
2. asked by Anonymous
3. 1,114 views
a long non uniform board of length 8 m and mass m = 12 kg is suspended by two ropes if the tensions in the ropes are mg/3 (on
1. 1 answer
2. asked by liz
3. 1,100 views
An ideal solution contains 40 mole % of A and 60 mole % of B at 80 degrees C. The vapor pressure of pure A and B at this temp
1. 2 answers
2. asked by Anonymous
3. 1,065 views
Please need help on thisCreate an equation of a nonlinear function and provide two inputs for your classmates to evaluate.
1. 0 answers
2. asked by Anonymous
3. 1,063 views
Please some one check it for me .please please....Chaucer is a wonderful poet and story teller. His poems are very interesting
1. 2 answers
2. asked by Anonymous
3. 1,062 views
Calculate the mass percent composition of iron for the second one of these iron ores.fe2o3 fe3o4
1. 1 answer
2. asked by royalty
3. 1,050 views
So I've been having trouble solving some problems.Mainly problems that look like this 5-(t+3)=-1+2(t-3) what causes problems is
1. 0 answers
2. asked by katherine
3. 1,042 views
1.Suppose you wish to whirl a pail full of water in a vertical circle without spilling any of its contents. If your arm is 0.99
1. 1 answer
2. asked by mike
3. 1,037 views
The 3.42 kg physics book shown is connected by a string to a 518.0 g coffee cup. The book is given a push up the slope and
1. 1 answer
2. asked by Rishi
3. 1,032 views
A triangle has side lengths of 5 inches, 12 inches, and 15 inches. Every dimension is multiplied by 1/5 to form a new triangle.
1. 1 answer
2. asked by Anonymous
3. 1,028 views
An arrow is launched vertically upward from a crossbow at 98.2 m/s. Ignoring air friction, what is its instantaneous speed at
1. 1 answer
2. asked by jake
3. 1,027 views
A 120-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 400 N. For the first 17 m the
1. 1 answer
2. asked by Melissa
3. 1,019 views
calculate the amount of solid NH4Cl to add to 50 mL of 1 M to form a mixture that has a pH of 9 assume no volume change in the
1. 3 answers
2. asked by maycee
3. 1,010 views
An elevator and its load have a combined mass of 1700 kg. Find the tension in the supporting cable when the elevator, originally
1. 3 answers
2. asked by Andrew
3. 1,006 views
The 3.42 kg physics book shown is connected by a string to a 518.0 g coffee cup. The book is given a push up the slope and
1. 2 answers
2. asked by Rishi
3. 1,005 views
a.I am not in the second quadrant.b.One point on my border is (-2,-1) It is not one of my solutions c. My border is a horizontal
1. 1 answer
2. asked by dess
3. 1,000 views
A man lifts a 2.7 kg stone vertically with his hand at a constant upward acceleration of 1.2 m/s2. What is the magnitude of the
1. 0 answers
2. asked by Kacy
3. 993 views
How many students must we sample if we want to be within 4% of the true proportion of female students at DeVry University when
1. 2 answers
2. asked by theresa
3. 989 views
Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified line.y=e^(-x), y=1,
1. 2 answers
2. asked by Abby
3. 972 views
the molar mass of a newly synthesized jluorocarbon was measured in a gas microbalance, This device consists of a gkass bulb
1. 0 answers
2. asked by jack
3. 965 views
For f(x) = 2x-3 and g(x)= 2x^2 find,a) (f + g)(x) = My answer is 2x^2 + 2x - 3. Is this correct? b) (f - g)(x) How would you do
1. 0 answers
2. asked by Hannah
3. 963 views
A circus performer juggling while standing on a platform 15.0-m high tosses a ball directly upward into the air at a speed of
1. 0 answers
2. asked by Sammie
3. 960 views
You have a friend who is an archer and she wants to know how fast the arrows leave her bow. You have her launch an arrow
1. 0 answers
2. asked by katelyn
3. 958 views
how do you balance a redox equation like:Bi(NO3)3 + Al + NaOH = Bi + NH3 + NaAlO2 ??
1. 1 answer
2. asked by Nicole
3. 951 views
Experiment on Which Fuels Provide the Most Heat? Comparison of the Energy Content of Fuels.Suppose you put 50 mL of water in the
1. 0 answers
2. asked by Megan
3. 948 views
Describe how you would weigh your KHP samples, if you didn’t know about weighing by differences. Mentioning any differences
1. 1 answer
2. asked by priya
3. 942 views
Hi,I am lost on couple of problems and i was wondering if you could just help me out with them. 1. Find and classify the points
1. 1 answer
2. asked by Help asap!! plz
3. 930 views
A stone is thrown straight up from the edge of a roof, 700 feet above the ground, at a speed of 10 feet per second. (A).
1. 0 answers
2. asked by Viky
3. 929 views
One gram of water is placed in a cylinder and the pressure is maintained at 2.0 x 105 Pa. The temperature of the water is raised
1. 1 answer
2. asked by Angel
3. 928 views
Estimate a range for each sumexample 7.42+13.97+101.2
1. 1 answer
2. asked by Anonymous
3. 913 views
Mrs. Jones had some white paint and some green paint, and a bunch of wooden cubes. Her class decided to paint the cubes by
1. 1 answer
2. asked by Mia
3. 890 views
why should you never mix bleach with any cleaner or other household product which may contain acid?
1. 1 answer
2. asked by Anonymous
3. 883 views
Water flows (v = approx 0) over a dam at the rate of 660 kg/s and falls vertically 86 m before striking the turbine blades.
1. 1 answer
2. asked by Melissa
3. 881 views
Need these checked--1. Under popular sovereignty, the decision whether or not to allow slavery in a territory was made by a.
1. 5 answers
2. asked by mysterychicken
3. 875 views
This is my assignment that is due tomorrow.Checkpoint: Job Opportunities Map ·Create a diagram in PowerPoint® or Word mapping
1. 4 answers
2. asked by Nikol
3. 872 views
The sum of three consecutive numbers is 51. Find the largest number. Also write the equation to solve the problem
1. 1 answer
2. asked by Jannie
3. 862 views
An automobile with a mass of 1316 kg is parked on a moving flatbed railcar; the flatbed is 1.5 m above the ground. The railcar
1. 3 answers
2. asked by Sarah
3. 859 views
What are the functions of indicator in acid-base titration??Thank you!
1. 1 answer
2. asked by Kim
3. 855 views
Ray makes an array that has 4 rows of 4 counters. He wants to make two more arrays using the same number of counters. He wants
1. 14 answers
2. asked by john
3. 850 views
lim f(x) sin 3x / xx�¨0
1. 1 answer
2. asked by beatriz
3. 848 views
A sample of magnesium metal reacts with hydrochloric acid solution to produce magnsesium chloride solution and hydrogen gas.a)wr
1. 1 answer
2. asked by Anonymous
3. 844 views
If f(x) = sec x, find f''(π/4).
1. 1 answer
2. asked by Sasha
3. 841 views
In the second sentence, the phrase "inside his trouser pockets" is a/an?
1. 1 answer
2. asked by loony
3. 839 views
What is the specific heat (in cal) of fat with a degree change from 25 degrees Celsius to 35 degrees celsius? Density of fat =
1. 2 answers
2. asked by Lisa
3. 832 views
A farmer planted a field of Bt 123 corn and wants to estimate the yield in terms of bushels per acre. He counts 22 ears in
1. 3 answers
2. asked by renee
3. 832 views
cortes had several advantages in defeating the Aztecs metal_______;________a kind of rifle. ________ that could easily pierce
1. 2 answers
2. asked by mone
3. 827 views
A block of mass 39 kg lies on an inclined plane, as shown. The horizontal and vertical supports for the plane have lengths of 36
1. 1 answer
2. asked by christine
3. 824 views
The 3.42 kg physics book shown is connected by a string to a 518.0 g coffee cup. The book is given a push up the slope and
1. 1 answer
2. asked by Rishi
3. 804 views
A boy walks a total distance of 210 km due North. His starting position is at 20 km and his final position is 34 km. If it takes
1. 0 answers
2. asked by Martha
3. 787 views

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