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Questions Asked on February 27, 2012

A solution in which [H+] is 1000 times greater than [OH-][OH-] = ?M
1. 3 answers
2. asked by Matt D
3. 11,400 views
Which type of bond is formed between two chlorine atoms in a chlorine molecule?1) polar covalent 2) nonpolar covalent 3)
1. 4 answers
2. asked by Case
3. 6,576 views
a car is traveling 20.0 m/s when the driver sees a child standing in the road. he takes 0.80 seconds to react, then steps on the
1. 1 answer
2. asked by allison
3. 4,964 views
Find the pH of each mixture of acids.0.020 M HBr and 0.015 M HClO4. They are both strong acids Si they dissociate completely. Si
1. 1 answer
2. asked by L.Bianchessi
3. 4,589 views
Find the pH of mixture of acids. 0.185 M in HCHO2 and 0.225 M in HC2H3O2Im using an ice chart of weak acid and putting in strong
1. 3 answers
2. asked by L.Bianchessi
3. 4,218 views
A cart starts from position 4 (which is 20m above ground) in the figure below with a velocity of 11 m/s to the left. Find the
1. 3 answers
2. asked by Jacky
3. 3,966 views
4. Plots of land between two roads are laid out according to the boundaries shown. The boundaries between the two roads are
1. 2 answers
2. asked by Alexa
3. 3,768 views
A light rope is wrapped several times around a large wheel with a radius of 0.435 m. The wheel?A light rope is wrapped several
1. 1 answer
2. asked by BB
3. 3,724 views
Show that there must be at least 90 ways to choose six integers from 1 to 15 so that all choices have the same sum.
1. 2 answers
2. asked by Don
3. 3,521 views
Find the pH of each mixture of acids.0.115 M HBr and O.125 M HCHO2. I TRIED DOING THIS PROBLEM THE SAME WAY AS THE ONE BEFORE
1. 1 answer
2. asked by L.Bianchessi
3. 3,411 views
Photographic film contains silver bromide in gelatin. Once exposed, some of the silver bromide decomposes, producing fine grains
1. 2 answers
2. asked by Denisha
3. 3,368 views
Hey, I need your help! I have an input output table that I need the function rule for. The table is like this:Input: 0 Output:
1. 10 answers
2. asked by C.J.
3. 3,348 views
Joan wants to start an IRA that will have $250,000 in it when she retires in 21 years. How much should she invest annually in
1. 2 answers
2. asked by Anonymous
3. 3,340 views
Rental cost for offices spaces have been going up at 6.2% per year compounded annually forthe past 5 years. If office space rent
1. 3 answers
2. asked by momo
3. 2,999 views
2. suppose a point at (2,3) is translated to (7,-1). which ruledescribes this translation? a) translate right 5, down 4 b)
1. 2 answers
2. asked by running.from.myself
3. 2,719 views
A stunt airplane travels at N 62 E at a constant speed of 400 mi/hr. There is a 20 mi/hr wind blowing doe west. What is the
1. 1 answer
2. asked by Sydney Rood
3. 2,706 views
Let f be the function defined by f(x)= x^3 + ax^2 +bx + c and having the following properties.1. the graph of f has a point of
1. 2 answers
2. asked by Anonymous
3. 2,567 views
An airplane flying with the wind can cover a certain distance in a = 3 hours. The return trip against the wind takes b = 4.5
1. 2 answers
2. asked by Libuse
3. 2,215 views
20. The wheelchair ramp at the entrance of the Mission Bay Library has a slope of 1/18. What angle does the ramp make with the
1. 4 answers
2. asked by Ariel
3. 2,200 views
A galvanic cell consists of an electrode composed of nickel in a 1.0 M nickel(II) ion solution and another electrode composed of
1. 1 answer
2. asked by katie
3. 2,144 views
what isw the density of N2O,a gas at STP?
1. 2 answers
2. asked by CARMEN
3. 2,098 views
Fill in the blank;•In the process of polynomial division (Divisor)(Quotient)+_______=_______ •When a polynomial function f
1. 2 answers
2. asked by nelly
3. 1,874 views
A block mass m1 lying on a frictionless inclined plane is connected to a mass m2 by a massless cord passing over a pulley.1.)
1. 1 answer
2. asked by Anon
3. 1,843 views
A steel drum in the shape of a right circular cylinder is required to have a volume of 100 cubic feet. express the amount of
1. 1 answer
2. asked by Carol
3. 1,806 views
Given that the equation of the parabola is 5y^2 + 24x = 0.Find (1)The Axis and vertex of the parabola (ii)The focus and the
1. 1 answer
2. asked by mary
3. 1,804 views
A skier slides horizontally along the snow for a distance of 22.3 m before coming to rest. The coefficient of kinetic friction
1. 1 answer
2. asked by Candy
3. 1,751 views
These are the ones I'm not 100% sure about Ive looked it up in the book and I just not sure please help me.1.One advantage of
1. 5 answers
2. asked by alisha221
3. 1,723 views
determine the A.P whose fourth term is 18 and the difference of the ninth term from the fifteenth term is 30.
1. 4 answers
2. asked by shabna
3. 1,721 views
Give the formula for the conjugate base of each acid.a. HSO4- SO4^2- b. H3PO4 H3PO4 c. HPO42- PO4^2- d. HNO3 NO3^-
1. 3 answers
2. asked by krystal
3. 1,637 views
A student observed two different types of cells under a microscope. She noticed that one cell had many more mitochondria than
1. 3 answers
2. asked by Mrs. Sue can you please answer this question
3. 1,603 views
A galvanic cell consists of an electrode composed of nickel in a 1.0 M nickel(II) ion solution and another electrode composed of
1. 1 answer
2. asked by katie
3. 1,510 views
We are studying Quadratic formula:A football player punts a ball. The path of the ball can be modeled by the equation
1. 1 answer
2. asked by Jane
3. 1,497 views
Triangle RST is similar to triangle XYZ. If the measure of angle S is 41°, and the measure of angle R is 76°, what is the
1. 1 answer
2. asked by Gabby
3. 1,484 views
The density of liquid oxygen at its boiling point is 1.14 \rm{kg/L} , and its heat of vaporization is 213 \rm{kJ/kg} .How much
1. 1 answer
2. asked by ashley
3. 1,477 views
A winch is used to drag a 375 N crate up a ramp at a constant speed of 75 cm/s by means of a rope that pulls parallel to the
1. 1 answer
2. asked by dillion
3. 1,474 views
38. For maximum accessibility, a wheelchair ramp should have a slopebetween 1/16 and 1/20. What is the range of angle measures
1. 2 answers
2. asked by Ariel
3. 1,474 views
A husband and Wife take turns pulling their child in a wagon along a horizontal sidewalk. Each exerts a constant force and pulls
1. 1 answer
2. asked by Natasha
3. 1,446 views
you are standing in a canyon. you shout and hear an echo 2 seconds later. what can you tell me about the width of the canyon?
1. 1 answer
2. asked by Regina
3. 1,444 views
a 5.00-g sample of octane is burned in a bomb calorimeter containing 2.00x10^2 h h2o. how much energy, in cal,is released if the
1. 1 answer
2. asked by Jessica
3. 1,429 views
Prove the following trigonometric identities(i)(1+cotx)^2 +(1-cotx)^2=2cosec^2x (ii)cos(270degrees+theta)/cos(360degrees -theta)
1. 1 answer
2. asked by tembo
3. 1,418 views
Determine whether each cation is acidic or pH neutral. For those cations that are acidic, write an equation that shows how the
1. 1 answer
2. asked by L.Bianchessi
3. 1,410 views
a body of mass 5kg is thrown vertically upwards with a speed of 10m/s. what is its kinetic energy when its thrown? find its
1. 2 answers
2. asked by akansha
3. 1,380 views
Calvin Hines is a graphic designer. He ears $11.50 per hour. Last week he worked 7 hours each day, Monday through Friday. What
1. 2 answers
2. asked by Sakiera
3. 1,370 views
How much work is required to lift a 280 kg refrigerator to the second-story level that is 6m high?
1. 1 answer
2. asked by jim
3. 1,363 views
An entertainment center is on sale for 20% off original price. The original price is $225. What is the sale price?How do you
1. 4 answers
2. asked by vick
3. 1,318 views
Miguel is driving his motorboat across a river. The speed of the boat in still water is 10 mi/h. The river flows directly south
1. 2 answers
2. asked by hiba
3. 1,298 views
Identify the percent of change as an increase or a decrease.Then find the percent of change.#2) Original:23 New:46 and #3)
1. 4 answers
2. asked by vick
3. 1,288 views
The specific heat of solid copper is 0.385 J/g*C. What thermal energy change occurs when the temperature of a 40.10g sample of
1. 1 answer
2. asked by Tiffany
3. 1,276 views
A brick of mass 1.5 kg slides down an icy roof inclined at 30.0° with respect to the horizontal.(a) If the brick starts from
1. 1 answer
2. asked by Jacky
3. 1,275 views
flickr.(dotcom)/photos/77304025@N07/6782789880/Create a function that closely gives the graph given below. The function may be a
1. 0 answers
2. asked by Fatih
3. 1,250 views
Determine how much you would be willing to pay for a bond that pays $60 annual interest indefinitely and never matures (i.e., a
1. 1 answer
2. asked by Raechell
3. 1,240 views
A uniform ladder 10.0 m long is leaning against a frictionless wall at an angle of 60.0° above the horizontal. The weight of
1. 1 answer
2. asked by help
3. 1,237 views
A block of mass M = 6.755 kg is pulled along a horizontal frictionless surface by a rope of mass m = 0.592 kg, as shown in Fig.
1. 0 answers
2. asked by zach
3. 1,234 views
Olivia bought some school supplies. In the first store she spent half the money she had plus $6. In the second store she spent
1. 1 answer
2. asked by linda
3. 1,233 views
The following stockholders' equity accounts arranged alphabetically are in the ledger of McGrath Corporation at December 31,
1. 1 answer
2. asked by Beth
3. 1,227 views
So I'm supposed to verify the solution of the differential equation. The solution is y=e^(-x). The differential equation is 3y'
1. 2 answers
2. asked by Hannah
3. 1,213 views
Consider the function f(x,y)=xy+xz+yz+4 at point p=(2,-1,1)a)find the unit vector in direction of p. b) find the directional
1. 2 answers
2. asked by Lucy
3. 1,207 views
I have to calculate the concentration of I2 produced (# of moles of I2 produced / L) based on the stoichiometric ratio in the
1. 4 answers
2. asked by Hannah
3. 1,171 views
Olivia bought some school supplies. In the first store she spent half the money she had plus $6. In the second store she spent
1. 1 answer
2. asked by linda
3. 1,171 views
A 220-g ball strikes a wall with a speed of 7.0 m/s and rebounds with only 37% of its kinetic energy. What is the speed of the
1. 2 answers
2. asked by Katie
3. 1,144 views
A right triangle with hypotenuse y and equal legs of size x has a perimeter of 36m. Express the area of the triangle solely in
1. 1 answer
2. asked by Nurcan
3. 1,134 views
Determine whether each anion is basic or neutral. For those that are basic, wrote an equation that shows how an anion acts as a
1. 0 answers
2. asked by L.Bianchessi
3. 1,118 views
A ball is dropped from 27.0 ft above the ground. (a) Using energy considerations only, whatis the velocity of the ball just
1. 1 answer
2. asked by Hannah
3. 1,116 views
A roller coaster reaches the top of the steepest hill with a speed of 7.0 km/h. It then descends the hill, which is at an
1. 1 answer
2. asked by Anonymous
3. 1,110 views
original thread:cgi?id=1330376726 1. Water is the source of life. We all depend on it. Water is important, and we cannot survive
1. 1 answer
2. asked by ESLstudent
3. 1,106 views
A ship maneuvers to within 2500 m of an island's 1800 m high mountain peak and fires a projectile at an enemy ship 610 m on the
1. 0 answers
2. asked by Shawn
3. 1,101 views
sin [sin -1 (7/25) - cos -1 (-8/17)]
1. 1 answer
2. asked by Ansley
3. 1,100 views
A 7 kilogram bowling ball is dropped from a fourth story window. If each story is 3 meters high, use energy conservation (not
1. 0 answers
2. asked by TRACY
3. 1,100 views
A football kicked with an initial speed of 23.1m/s reaches a maximum height of 16.9m. At what angle was the ball kicked? What
1. 0 answers
2. asked by Brandi
3. 1,074 views
The degree of polarity of a bond is indicated by1) ionization energy difference 2) the shape of the molecule 3)
1. 2 answers
2. asked by Anonymous
3. 1,066 views
Briefly explain the steps that a President-elect goes through from the national convention to the inauguration
1. 1 answer
2. asked by CHEYANNE
3. 1,064 views
A 1289 Hz sound from the speaker enters a tube at point A.It then takes two paths, ACD or ABD. Minimum sound is heard when ACD
1. 0 answers
2. asked by Tom
3. 1,060 views
How many formula units are in .25 mole of Na O ?2
1. 1 answer
2. asked by Dee
3. 1,052 views
Analyze the changes in global commerce between 1750 and 1900 due to changes in technology, communication, and economic theory.
1. 1 answer
2. asked by Emily
3. 1,041 views
Four very thin rods, each 5.9 m long, are joined to form a square, as part (a) of the drawing shows. The center of mass of the
1. 0 answers
2. asked by Day
3. 1,026 views
if Earth's axis were not tilted,could any area have both a hot summer and a cold winter?
1. 2 answers
2. asked by Debbie
3. 1,022 views
Science scores for HS seniors in the US are normally distributed with a mean of 77 and a standard deviation of 7. Students
1. 0 answers
2. asked by taylor
3. 1,020 views
A bald eagle flying horizontally at 48km/h drops it's prey from a height of 50m.a)what is the prey's vertical velocity when it
1. 2 answers
2. asked by Sally
3. 1,014 views
suppose the revenue in dollars from selling x cell phones is R(x)= -1.2x^2+220x. the cost in dollars of selling x cell phones is
1. 1 answer
2. asked by Carol
3. 1,009 views
I'm going to read more about Robert Frost. He seemed to have jad quite a life.Thanks Again! Dee
1. 1 answer
2. asked by Dee
3. 1,006 views
Science scores for HS seniors in the US are normally distributed with a mean of 77 and a standard deviation of 7. Students
1. 1 answer
2. asked by taylor
3. 990 views
If no friction acts on a diver during a dive, then which of the following statements is true?A) The total mechanical energy of
1. 1 answer
2. asked by Amaya
3. 989 views
If 62.7 ml of .208M HCL is needed to needed to neutralize a solution of Ca(OH)2, how many grams of Ca(OH)2 must be in the
1. 2 answers
2. asked by Arianna
3. 988 views
You are a chemist requested to review and analyse certain debris found on thebottom of aboot found in a crime scene. The debris
1. 1 answer
2. asked by Jimmy
3. 983 views
A capacitor consisting of two parallel plates of area A = 4.6 m2 and spacing d = 0.150 m is filled with two parallel slabs of
1. 0 answers
2. asked by Meghan
3. 976 views
A 3.50 kg mass, m, on a frictionless table is moving in a circle with radius 0.420 m at a constant speed. m is attached to a
1. 0 answers
2. asked by Ed
3. 975 views
A customer is buying a $100 drill and two $15 drill bit sets. The customer uses a gift card worth $50 to pay for a portion of
1. 1 answer
2. asked by george
3. 955 views
A 750.0 N man, carrying a 1.9 kg physics textbook, stands at the center of a frozen pond of radius 9.0 m. He is unable to get to
1. 1 answer
2. asked by Joe
3. 951 views
How does data collection integrate with your teaching and learning in the classroom and How do data analyses affect your
1. 1 answer
2. asked by danie
3. 946 views
How much work is needed to lift an object with a mass of 51.0 kg to a height of 2.00 meters? Calculate your answer in JoulesAn
1. 1 answer
2. asked by Anonymous
3. 940 views
For a one step reaction, the activation energy for the forward reaction is 40.0 kJ/mol and the enthalpy of reaction is -20.0 kJ
1. 0 answers
2. asked by john117
3. 924 views
A hang glider moving at speed 9.0 m/s dives to an altitude 4.2 m lower. Ignoring drag, how fast is it then moving?
1. 1 answer
2. asked by opp
3. 924 views
Find and classify all local minima, local maxima, and saddle points of the function f(x,y)= -3yx^2-3xy^2+36xy
1. 2 answers
2. asked by Lucy
3. 923 views
a body of mass 5kg is thrown vertically upwards with a speed of 10m/s. what is its kinetic energy when its thrown? find its
1. 1 answer
2. asked by akansha
3. 912 views
a landscaper uses square tiles to make garden paths the ends of the paths are always 2 tiles wide, and the center portions of
1. 1 answer
2. asked by bri
3. 902 views
A mass m1 on a horizontal shelf is attached by a thin string that passes over a frictionless pulley to a 2.5 kg mass (m2) that
1. 0 answers
2. asked by J
3. 900 views
A student observes two different types of cells under a microscope. She noticed that one cell had many more mitochondria than
1. 3 answers
2. asked by Anonymous
3. 896 views
50g of H2SO4 produce how many grams of H2?
1. 1 answer
2. asked by charesse
3. 887 views
why will no one answer this question?For a one step reaction, the activation energy for the forward reaction is 40.0 kJ/mol and
1. 0 answers
2. asked by john117
3. 881 views
At 25°C, K = 0.090 for the following reaction.H2O(g) + Cl2O(g) equilibrium reaction arrow 2 HOCl(g) Calculate the
1. 0 answers
2. asked by Ann
3. 879 views

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