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Questions Asked on November 18, 2011

Write a net ionic equation for the overall reaction that occurs when aqueous solutions of hydrosulfuric acid and potassium
1. 5 answers
2. asked by savannah
3. 9,591 views
an open box is to be made from a piece of metal 16 by 30 inches by cutting out squares of equal size from the corners and
1. 1 answer
2. asked by lulu
3. 7,873 views
In a volleyball a player on one team spikes the ball over the net when the ball is 10 ft above court. The spike drives the ball
1. 4 answers
2. asked by Lynn
3. 7,584 views
Rank the following atoms in terms of decreasing atomic radius.1. Na, N, O, Mg, F 2. F, O, N, Mg, Na 3. F, Mg, Na, O, N 4. Na,
1. 3 answers
2. asked by Bob
3. 6,394 views
use oxidation states to identify the element that is being oxidized and the element that is being reduced in the redox reactionS
1. 1 answer
2. asked by Monique
3. 4,911 views
A candy sample is completely combusted in a bomb calorimeter. The calorimeter contains 982 g of water, and the measured
1. 1 answer
2. asked by Chemistry Chick
3. 4,448 views
Find a, b, c, and d such that the cubic function ax^3 + bx^2 + cx + d satisfies the given conditionsRelative maximum: (2,4)
1. 2 answers
2. asked by Savannah
3. 3,849 views
calculate the mass of solid NaCl that must be added to 1.5L of 0.100M AgNO3 solution to precipitate all the Ag+ ions in the form
1. 3 answers
2. asked by NONO
3. 3,710 views
In the industrial synthesis of ammonia, the equilibrium constant expression may be written as: Keq= [NH3]^2/[N2][H2]^3Calculate
1. 2 answers
2. asked by Chemistry Chick
3. 3,594 views
The mole fraction of nitrogen in air is 0.7808. calculate the partial pressure of N2 in air when the atmospheric pressure is 760
1. 4 answers
2. asked by NONO
3. 3,463 views
a fence 8 ft tall stands on level ground and runs parallel to a tall building. if the fence is 1 ft from the building, find the
1. 3 answers
2. asked by robert
3. 2,904 views
A ball rolls on a circular track of radius 0.65 m with a constant angular speed of 1.2 rad/s in the counterclockwise direction.P
1. 2 answers
2. asked by Cooper
3. 2,870 views
An oil can is to be made in the form of a right circular cylinder to have a volume of 16 pie inches cubed. Find the dimensions
1. 1 answer
2. asked by Betty
3. 2,799 views
if 10mL of acetone is diluted with water to a total of 200mL, what is the percent by volume in the propane solution?
1. 1 answer
2. asked by Anonymous
3. 2,470 views
A solution is prepared by dissolving 0.5842g of oxalic acid (H2C2O4) in enough water to make 100.0ml of solution. A 10.00ml
1. 2 answers
2. asked by NONO
3. 2,440 views
1. A state’s department of education reports that 12% of the high school students in that state attend private schools. The
1. 1 answer
2. asked by fast eddie
3. 2,230 views
A buffer solution contains HC2H3O2 at a concentration of 0.225 M NaC2H3O at a concentration of 0.164 M. The value of Ka for
1. 1 answer
2. asked by Chemistry Chick
3. 2,201 views
Consider the following reaction4Al + 3O2 = 2Al2O3 It takes 2.00 L pure oxygen gas at STP (0C ,1atm ) to react completely with a
1. 3 answers
2. asked by NONO
3. 2,063 views
you need exactly A 1680 ft3 aquarium for you fish. at the pet store you see four chices of aquariums, but the volume is not
1. 5 answers
2. asked by iris
3. 1,971 views
A hammer slides down a roof that makes a 40.0 degree angle with the horizontal. What are the magnitudes of the components of the
1. 1 answer
2. asked by Wilson
3. 1,915 views
I wanted to check my True and False Chemistry HW. I am not 100% they are correct.1.the number of neutrons in an atom is reffered
1. 1 answer
2. asked by Allura
3. 1,914 views
A 10 g bullet moving at 370 m/s strikes a ballistic pendulum of mass 2kg. The bullet emerges with a speed of 100 m/s.What height
1. 1 answer
2. asked by mary
3. 1,825 views
Write a net ionic equation for the reaction that occurs when aqueous solutions of sodium hydroxide and perchloric acid are
1. 3 answers
2. asked by savannah
3. 1,689 views
A 26.0 kg block is connected to an empty 1.00 kg bucket by a cord running over a frictionless pulley. The coefficient of static
1. 1 answer
2. asked by Millie
3. 1,652 views
Simplify. Identify any x-values for which the expression is undefined.1. (4x-8)/(x^2-2x) 2. (8x-4)/(2x^2+9x-5)
1. 1 answer
2. asked by Lily
3. 1,631 views
Imagine that you have a 5.00L gas tank and a 3.50L gas tank. You need to fill one tank with oxygen and the other with acetylene
1. 1 answer
2. asked by unknown
3. 1,615 views
A man stands on a platform that is rotating (without friction) with an angular speed of 1.21 rev/s; his arms are outstretched
1. 1 answer
2. asked by Aimee
3. 1,573 views
The position of a mass oscillating on a spring is given by x=(4.7 cm)cos [2pi t/(0.52 s)].What is the period of this motion?
1. 1 answer
2. asked by Cooper
3. 1,553 views
find the opposite or additive inverse of -38
1. 1 answer
2. asked by Willis
3. 1,546 views
Which of the following statements concerning the Twenty-fifth Amendment is incorrect?a. It allows the vice president to serve as
1. 1 answer
2. asked by Brooke
3. 1,416 views
A calorimeter contains 32.0 of water at 11.5. When 1.70 of (a substance with a molar mass of 74.0 ) is added, it dissolves via
1. 1 answer
2. asked by Priscilla
3. 1,349 views
a bicyclist is finishing his repair of a flat tire when a friend rides by at 3.5 m/s. two seconds later, the bicyclist hops on
1. 0 answers
2. asked by taylor
3. 1,293 views
define a supply chain driver and show it's relation to supply chain focus with a couple of examples
1. 3 answers
2. asked by Edwin
3. 1,291 views
How many different 3 digit numbers less than 500 can be made using the digits 3, 4, 5, and 6 if the digits can be used only once
1. 2 answers
2. asked by Anonymous
3. 1,285 views
I urgently need you to check these sentences. Thank you.1) As our students we'll probably have to learn science in English in
1. 1 answer
2. asked by Henry2
3. 1,231 views
are this 2 equations the same NIE? and if not how come?Write a net ionic equation for the reaction that occurs when aqueous
1. 4 answers
2. asked by savannah
3. 1,196 views
a model rocket rises with constant accerleration to a height of 3.2 m, at which point its speed is 26.0 m/s. (a) how much time
1. 1 answer
2. asked by taylor
3. 1,194 views
Nisa has grown up in a small village in the foothills. There was no electricity and water had to be hand pumped. They seldom saw
1. 3 answers
2. asked by Anonymous
3. 1,147 views
Your heart beats with a frequency of 1.35 Hz. How many beats occur in a minute?If the frequency of your heartbeat increases,
1. 0 answers
2. asked by Cooper
3. 1,135 views
A solid brass ball of mass 9.5 g will roll smoothly along a loop-the-loop track when released from rest along the straight
1. 0 answers
2. asked by Bridgette
3. 1,117 views
1. The problem statement, all variables and given/known dataI am using a Vishay strain indicator with it hooked up to a strain
1. 0 answers
2. asked by Z32
3. 1,112 views
Tom the cat is chasing Jerry the mouse acrossa table surface 1.9 m off the floor. Jerry steps out of the way at the last second,
1. 2 answers
2. asked by Emma
3. 1,106 views
when a chameleon captures an insect its tingue car extend 16 cm in 0.10 s. (a) Find the magnitude of the tongue's acceleration,
1. 1 answer
2. asked by taylor
3. 1,097 views
what are the main assumptions underlying organizational communication?
1. 0 answers
2. asked by Edwin
3. 1,072 views
when a chameleon captures an insect its tingue car extend 16 cm in 0.10 s. (a) Find the magnitude of the tongue's acceleration,
1. 1 answer
2. asked by taylor
3. 1,070 views
I have a big packet of homework can somebdy help me?1,000 qstn. :(
1. 1 answer
2. asked by Yessica
3. 1,069 views
I urgently need you to revise these sentences.1) Do you intend to start the project before Christmas? 2) I need to know which
1. 1 answer
2. asked by Henry2
3. 1,053 views
find the solution of(x2-y2)dx + 3xydy =0 Please help me to find the right answer,I sovled many ways but I don't get the right
1. 0 answers
2. asked by lyn
3. 1,051 views
The present ages in years of four cousins are consecutive multiples of 3. Five years ago the sum of their ages was 46. What is
1. 1 answer
2. asked by Zephine
3. 1,044 views
You have a 2.4 m high platform that is level on top. A spring launcher is located on the top so that it launches objects
1. 0 answers
2. asked by Dan
3. 1,039 views
. An article accessed through a library data base by May Gottchalk titled Reconsidering Dyslexia. The article waspublished in
1. 2 answers
2. asked by HM
3. 1,021 views
Brenda and her family were driving to her grandmother’s house during a holiday. During the drive, Brenda fell asleep halfway
1. 2 answers
2. asked by MATH Help Please
3. 981 views
A Ferris wheel with radius 11.0 m rotates at a constant rate, completing one revolution every 33.9 s. Suppose the Ferris wheel
1. 0 answers
2. asked by Jacob
3. 977 views
A bunch of grapes is placed in a spring scale at a supermarket. The grapes oscillate up and down with a period of 0.41 s, and
1. 0 answers
2. asked by Cooper
3. 969 views
What is the principle of powers? Describe in your own words. When solving a radical equation, how do we use the principle of
1. 1 answer
2. asked by Allison
3. 929 views
When a 0.213-kg mass is attached to a vertical spring, it causes the spring to stretch a distance d. If the mass is now
1. 0 answers
2. asked by Cooper
3. 912 views
A class consist of half as many boys as girls, if there are 14 boys how many girls are there
1. 4 answers
2. asked by janet
3. 912 views
Iron and oxide react to form iron(lll) oxide: 4Fe(s) + 3O2(g)+ 2FeO2(s) Determine the limiting reactant in each of the following
1. 1 answer
2. asked by claire
3. 907 views
To identify a diatomic gas (x2), a researcher carried out the following experiment: She weighed an empty 3.4L- bulb, then filled
1. 1 answer
2. asked by unknown
3. 889 views
shawna reduced the size of a rectangle to a height of 2 in. what is the new width if it was originally 24 in wide and 12 in tall
1. 3 answers
2. asked by kimberly
3. 887 views
A vibrating structural beam in a spacecraft can cause problems if the frequency of vibration is fairly high. Even if the
1. 0 answers
2. asked by Cooper
3. 882 views
referring to the previous problem, if you had entered the same sandy patch with a lower speed, say 7.0 m/s, would the patch have
1. 0 answers
2. asked by taylor
3. 853 views
Let W be the set of all continuous functions from the set of real numbers R to R. For f,g in W define f+g by (f+g)(x)=f(x)+g(x)
1. 1 answer
2. asked by Mary
3. 850 views
A block is released on an inclined plane from a height of 1m. There is friction (static and kinetic =.4) and the mass of the
1. 1 answer
2. asked by Rachael
3. 842 views
A rotating uniform cylindrical platform of mass 240 kg and radius 5.7 m slows down from 3.9 rev/s to rest in 16 s when the
1. 1 answer
2. asked by Ari
3. 830 views
Facts about the sun are?I have 1. the only star in our solar system 2. sun spots are cooler areas on sun's surface 3. from solar
1. 1 answer
2. asked by Johnny
3. 827 views
a farmer has a 2040 ft of fencing and wishes to fence off two separate fields. one of the fields is to be a rectangle with the
1. 0 answers
2. asked by robert
3. 826 views
A 1200-kg car reaches a speed of 11 m/s from rest in 10 seconds. Determine the cars power.
1. 1 answer
2. asked by Mish
3. 820 views
Consider 4.00L of a gas at 365mmHg and 20*C. If the container is compressed to 2.80L and the temperature is increased to 35*C,
1. 1 answer
2. asked by unknown
3. 813 views
i to write a wellcome letter,wellcoming the new colonies to the United State and ease the fears
1. 1 answer
2. asked by david
3. 813 views
a trapezoid is a quadrilateral with (only) two sides (called bases) that are parallel. an isosceles trapezoid has two equal
1. 2 answers
2. asked by robert
3. 811 views
44 more thatn Q algebraic expression
1. 1 answer
2. asked by Johnson
3. 810 views
What is my grades for the first quarter? I didn't get my report card because my parents didn't go to the parents teacher
1. 7 answers
2. asked by Laruen
3. 807 views
2. Suppose that firms in an industry have the following cost function: C = 100 + 0.25q2, and the industry faces an inverse
1. 1 answer
2. asked by jay
3. 792 views
if the initial concentration of the reactant in the first order reaction A→products is 0.64 mol/L and the half-life is 30 s,
1. 1 answer
2. asked by saud
3. 769 views
Write each sentence, using the subjectpronoun that best replaces the underlined word or words. The neighborhood grocer sells a
1. 2 answers
2. asked by stephanie
3. 767 views
Two people with a combined mass of 135 kg hop into an old car with worn-out shock absorbers. This causes the springs to compress
1. 0 answers
2. asked by Cooper
3. 765 views
Explain how you can estimate to tell whether 433-147=286 is reasonable.
1. 1 answer
2. asked by sandra
3. 758 views
Find the angle that the vector R = A + Bmakes with the positive x axis, use counter- clockwise as the positive angular
1. 0 answers
2. asked by Shana
3. 758 views
a bicyclist is finishing his repair of a flat tire when a friend rides by at 3.5 m/s. two seconds later, the bicyclist hops on
1. 0 answers
2. asked by taylor
3. 758 views
Rewrite the passage below correcting any errors of grammar and usageThe mechanic drove out the car to Joe that was lubricated.
1. 1 answer
2. asked by richard
3. 752 views
What website is when you can ask any questions and other people can answer it something besides YA like free lik jiskha but for
1. 2 answers
2. asked by Laruen
3. 747 views
If a force of 20N stretches a spring 15 cm, by what amount will the spring stretch is if a force of 80 N is applied?
1. 1 answer
2. asked by Don
3. 746 views
An oil whose density is 0.775g/mL was used in a open-end manometer to measure the pressure of a gas in a flask, as shown in
1. 1 answer
2. asked by Chris
3. 742 views
While fishing, you get bored and start to swing a sinker weight around in a circle below you on a 0.24 m piece of fishing line.
1. 0 answers
2. asked by Danielle
3. 742 views
A person is riding a bicycle, the wheels of a bicycle have an angular velocity of +24.0 rad/s. Then, the brakes are applied. In
1. 0 answers
2. asked by Taylor
3. 741 views
Tom the cat is chasing Jerry the mouse acrossa table surface 1.8 m oﬀ the ﬂoor. Jerry steps out of the way at the last
1. 1 answer
2. asked by Anonymous
3. 732 views
THANK YOU!Brenda and her family were driving to her grandmother’s house during a holiday. During the drive, Brenda fell asleep
1. 0 answers
2. asked by To; Millie
3. 719 views
Jenny has a part time job and her net take-home income is $2000 per month. She needs to allocate her funds to reflect a balanced
1. 1 answer
2. asked by Lashan
3. 715 views
A 26.0 kg block is connected to an empty 1.00 kg bucket by a cord running over a frictionless pulley (Fig. 4-57). The
1. 0 answers
2. asked by Millie
3. 711 views
A 0.55-kg air cart is attached to a spring and allowed to oscillate.If the displacement of the air cart from equilibrium is
1. 0 answers
2. asked by Cooper
3. 686 views
The crowd that heard the President speak was estimated to be 10,000 peoples. The actual crowd could be 750 people more or less
1. 1 answer
2. asked by Katie D.
3. 684 views
Question PartPoints Submissions Used A bus slows down uniformly from 75.0 km/h (21 m/s) to 0.0 km/h in 220 m. How long does it
1. 0 answers
2. asked by Anonymous
3. 681 views
a given mass of hydrogen occupies 40.0L at 700 torr. what volume will it occupy at 930 torr
1. 1 answer
2. asked by aaa
3. 678 views
A 5.00 m long rigid beam with a mass of 200.0 kg is supported at each end. A 55.0 kg student stands on the beam, 1.40 m from the
1. 1 answer
2. asked by Anonymous
3. 678 views
I just want to be sure if my answers make any sense!A kid throws a ball in the air and catches it 5 seconds later a) What is the
1. 4 answers
2. asked by Tommy
3. 673 views
The word "slippery" almost feels slippery! This may have to do with the blending of "s" and "I" so that the word glides or slips
1. 6 answers
2. asked by Miss Sweet
3. 673 views
The hero pursues the villain up to the top of a bungee jumping apparatus. The villain appears trapped but to create a diversion
1. 1 answer
2. asked by Jack
3. 668 views
grace has 16 in her pocket. she has 8 red ibesm 4 green ones, and 4 blue ones. what is the minimum number of jellybeans she must
1. 3 answers
2. asked by iris
3. 666 views
Two disks are mounted (like a merry-go-round) on low-friction bearings on the same axle and can be brought together so that they
1. 0 answers
2. asked by Emily
3. 665 views

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