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Questions Asked on February 29, 2012

Calculate the standard free-energy change for the following reaction at 25 °C.2Au^3+(aq) + 3Ni(s) -->2Au(s) + 3Ni^2+(aq)
1. 7 answers
2. asked by Katie
3. 6,395 views
A 3.00 - µF and a 4.00 - µF capacitor are connected in series, and this combination is connected in parallel with a 2.00 - µF
1. 3 answers
2. asked by Nade
3. 5,386 views
A farmer needs to enclose three sides of a pasture with a fence (the fourth side is a river). The farmer has 42 meters of fence
1. 1 answer
2. asked by Taylor
3. 4,716 views
In triangle FGH, the measure of angle F is 42 degrees and an exterior angle at vertex H has a measure of 104 degrees. What is
1. 3 answers
2. asked by Anonymous
3. 4,111 views
In this equation is Fe(OH)3 and NaCL a solid liquid gas or aqueous?FeCl3 (aq) + 3NaOH(aq)=Fe(OH)3+NaCl
1. 1 answer
2. asked by krystal
3. 4,085 views
How would the calculated value of the molar mass of an unknown acid be affected (higher, lower, or no change) if the following
1. 1 answer
2. asked by Rosi
3. 4,064 views
What are the boiling point of a solution prepared by dissolving 2.40g of biphenyl(C^12H^10) in 75.0g of benzene? The molecular
1. 2 answers
2. asked by Anonymous
3. 3,909 views
Calculate the position of the center of mass of the following pairs of objects. Use acoordinate system where the origin is at
1. 2 answers
2. asked by john
3. 3,720 views
Ricardo and Jane are standing under a tree in the middle of a pasture. An argument ensues, and they walk away in different
1. 3 answers
2. asked by Sharefa
3. 3,443 views
Rank these species by their ability to act as an oxidizing agent.Na^+ I2 Cr^3+ F2 Put best oxidizing agent first and continue to
1. 3 answers
2. asked by Katie
3. 3,391 views
A cylindrical tin can has a radius of 4.5cm and a height of 5 cm(a)What is the surface area of the can (b)What is its volume?
1. 2 answers
2. asked by timmy
3. 3,051 views
A Ca(OH)2 solution has a pH of 8.0. [H3O+] = 1.0 x 10^-8 and [OH-] = 1.0 x 10^-6Determine [Ca(OH)2].
1. 1 answer
2. asked by Misa
3. 2,839 views
Find the area of the region IN THE FIRST QUADRANT (upper right quadrant) bounded by the curves y=sin(x)cos(x)^2, y=2xcos(x^2)
1. 1 answer
2. asked by Mishaka
3. 2,663 views
Find the area of the region bounded by the curves y^2=x, y-4=x, y=-2 and y=1(Hint: You'll definitely have to sketch this one on
1. 4 answers
2. asked by Mishaka
3. 2,505 views
An apple is dropped from a window 20 m above the ground. How long does it take the apple to reach the ground? What is its final
1. 4 answers
2. asked by jasmynn
3. 2,401 views
Calculate surface area and the volume of a box that is 3m by 2m by 7.5mShow me how to get the answer please.
1. 3 answers
2. asked by Thomas
3. 2,159 views
A solution is prepared by adding 50.3 mL of concentrated hydrochloric acid and 16.6 mL of concentrated nitric acid to 300 mL of
1. 1 answer
2. asked by Andre
3. 2,128 views
what is the effects of NH3(aq) and HCl(aq) on the CuSO4 or NiCl2 solution
1. 1 answer
2. asked by molly
3. 2,105 views
Find the area of the region IN THE FIRST QUADRANT (upper right quadrant) bounded by the curves y=sin(x)cos(x)^2, y=2xcos(x^2)
1. 3 answers
2. asked by Mishaka
3. 2,014 views
Suppose your statistics instructor gave six examinations during the semester. You received the following grades (percent
1. 4 answers
2. asked by Anonymous
3. 1,930 views
if 6 times the sixth term is equal to 15 times the fifteenth term ,find its 21st term
1. 4 answers
2. asked by Anonymous
3. 1,913 views
What is reduced and what is oxidized in the reaction?2Mg+O2=2MgO Oxygen is oxidized Mg is reduced
1. 2 answers
2. asked by krystal
3. 1,822 views
1. In the dining room brigade system, the positions of maitred’hôtel and/or captain may be combined under the title of A.
1. 2 answers
2. asked by shanon
3. 1,786 views
A traffic engineer plans to estimate the average number of cars that pass through an intersection each day. Based on previous
1. 2 answers
2. asked by Yo
3. 1,660 views
Dame Van Winkle and Rip are stereotyped characters that have been found in literature- the nagging wife and the henpecked
1. 1 answer
2. asked by Anonymous
3. 1,616 views
a gas sample is collected at 16 degrees c and 0.982 atm. if the sample has a mass of 7.40 g and a volume of 3.96 l, find the
1. 1 answer
2. asked by jessica
3. 1,610 views
I've removed your post because you put your email address in it. That's not a good or safe thing to do online.If you wish to
1. 4 answers
2. asked by Writeacher
3. 1,516 views
Nine apples, four of which are rotten, are in a refrigerator. Three apples are randomly selected without replacement. Let the
1. 2 answers
2. asked by Rose Bud
3. 1,443 views
What mass of HNO3 is present in 248.6 mL of a nitric acid solution having a pH = 5.04?
1. 1 answer
2. asked by Micah
3. 1,438 views
A 0.50-kg block, starting at rest, slides down a 30.0° incline with kinetic friction coefficient 0.30 (the figure below). After
1. 0 answers
2. asked by Angel
3. 1,425 views
An apple falls from an apple tree growing on a 20° slope. The apple hits the ground with an impact velocity of 14 m/s straight
1. 3 answers
2. asked by Sharefa
3. 1,416 views
Could someone help me conclude an essay on prohibition. I am writing: even though there were laws and movements for prohibition,
1. 1 answer
2. asked by DAN
3. 1,350 views
One kilowatt-hour (kWh) is the amount of work or energy generated when one kilowatt of power is supplied for a time of one hour.
1. 0 answers
2. asked by Candy
3. 1,318 views
A 0.50-kg block, starting at rest, slides down a 30.0° incline with kinetic friction coefficient 0.30 (the figure below). After
1. 2 answers
2. asked by Angel
3. 1,297 views
What continent is located south of Europe in Medieval Europe?
1. 1 answer
2. asked by Logan
3. 1,297 views
As the pH of a system decreases:the [H+] decreases the Kw decreases the [OH-] decreases all of the above
1. 3 answers
2. asked by krystal
3. 1,294 views
A ball has a radius of 56mma)Calculate the surface area b)what is the volume of the sphere could somebody please answer for my
1. 1 answer
2. asked by timmy
3. 1,286 views
3. A 0.200 kg air-track glider moving at 1.20 m/s bumps into a 0.600 kg glider at rest.a.) Find the total kinetic energy after
1. 1 answer
2. asked by Pat
3. 1,270 views
The sides of a triangle measure 9 , 15 , and 18 . If the shortest side of a similar triangle measures 6 , find the length of the
1. 1 answer
2. asked by Chyna
3. 1,260 views
For a normal distribution with µ = 200 and ó = 50, what X values form the boundaries for the middle 60% of the distribution?
1. 2 answers
2. asked by jau
3. 1,259 views
Yolando Bravo wants to make the following deposit:1 20 dollar bill 3 5 dollar bills 4 1 dollar bills 7 quarters 6 dimes 8
1. 1 answer
2. asked by Tia
3. 1,258 views
experimental error is part of any experiment.suggest two possible sources of error on the experiment of the mole ratio of NaCL
1. 1 answer
2. asked by audu
3. 1,243 views
Convert the given exponential function to the form indicated. Round all coefficients to four significant digits.f(x) = 9e^3x;
1. 1 answer
2. asked by Anne
3. 1,199 views
A cat dozes on a stationary merry-go-round, at a radius of 6.9 m from the center of the ride. The operator turns on the ride and
1. 3 answers
2. asked by Jake
3. 1,186 views
A Ferris wheel rotates 4 times each minute and has a diameter of 17 m.The acceleration of gravity is 9.8 m/s2. What is the
1. 2 answers
2. asked by Ashley
3. 1,164 views
how would you edit, misty could you walk ms millers dog on tuesday mom asked
1. 4 answers
2. asked by Quantavious
3. 1,158 views
Write balanced equations that describe the following reactions. (Use the lowest possible coefficients. Include states-of-matter
1. 1 answer
2. asked by Micah
3. 1,142 views
Mr. Horn purchased a cylindrical aquarium for his office. The aquarium has a height of 25 1/2 inches and a radius of 21 inches.
1. 1 answer
2. asked by Lavern
3. 1,129 views
i don't know how to start this problem. i don't like cos and sin. im so confuse.1.f(x)=sin(sin(x)), find f'(x) 2.f(x)= 4sin^4x,
1. 3 answers
2. asked by stacy
3. 1,106 views
4 students each wrote 2 number patternsShandi 3,6,9,12... 5,15,20,25 Latrell 1,3,5,7...3,5,7,9 Hong-Li 0,1,3,6...1,2,4,7 Adriano
1. 3 answers
2. asked by Colton
3. 1,105 views
What amount of hydrogen peroxide should result when 1.21 g of barium peroxide is treated with 25.1 mL of hydrochloric acid
1. 1 answer
2. asked by Jess
3. 1,092 views
if the measures of the angles of a triangle are in the ratio 1:3:5 , the number of degrees in the measure of the smallest angle
1. 1 answer
2. asked by Chyna
3. 1,085 views
Two bricks having a 22N force applied on them and each brick having a friction of 1N ,the first brick with the mass of 2kg and
1. 0 answers
2. asked by Bongani
3. 1,084 views
Two 8 cm long thin glass rods uniformly charged to +10 nC are placed side by side, 4.0 cm apart. What are the electric field
1. 1 answer
2. asked by help!
3. 1,058 views
If the measures of the angles of a triangle are in the ratio 1:3:5 , what is the measure in degrees of the smallest angle ?a. 10
1. 1 answer
2. asked by Chyna
3. 1,058 views
What are the strength and direction of the electric field at the position indicated by the dot in the diagram below, in which d
1. 0 answers
2. asked by help!
3. 1,047 views
A trough is 11 feet long and has ends that are isosceles triangles that are 1 foot high and 2 feet wide. If the trough is being
1. 1 answer
2. asked by zhengang
3. 1,041 views
Calculate the pH of a 0.0019 M HNO3 solution.
1. 1 answer
2. asked by krystal
3. 1,027 views
a sample of 16 atm transactions shows a mean transaction time of 67 seconds with a standard deviation of 12 seconds. State the
1. 2 answers
2. asked by Anonymous
3. 1,025 views
How many moles of sodium chloride (salt) can be made from 6 moles of chlorine?
1. 5 answers
2. asked by Jessica
3. 1,018 views
A spring gun (k = 26 N/m) is used to shoot a 56-g ball horizontally. Initially the spring is compressed by 17 cm. The ball loses
1. 0 answers
2. asked by Adam
3. 1,005 views
Asteroids can be classified into two broad groups based on their composition and location: carbon-rich asteroids dominate the
1. 1 answer
2. asked by Lucy
3. 1,003 views
The roof of a building is shaped like a square pyramid, with a base of 18m by 18m. If the slant height of the roof is 12m and
1. 3 answers
2. asked by timmy
3. 996 views
A filament lamp-cost- 80p effiency- 0.2 expected life- 1000 hours a compact fluorescent lamp (CFL)- cost- £3.00 effiency- 0.8
1. 0 answers
2. asked by 4611star
3. 980 views
Determine values of a and b that make the given function continuous .16sinx÷x f(x)= a bcosx It's a bicewise function
1. 4 answers
2. asked by Mohammed
3. 972 views
Given triangle ABC with vertices A(-6, -2), B(2,8), and C(6, -2). Line AB has midpoint D, line BC has midpoint E, and line AC
1. 1 answer
2. asked by Anthony
3. 971 views
determine the intervals where f(x) = ln(6x-24) is continuous
1. 1 answer
2. asked by Ahmed
3. 967 views
Expan each of the following using the compound-angle formulae:sin(x + 20degree)
1. 1 answer
2. asked by Zama
3. 952 views
Calculate the position of the center of mass of the following pairs of objects. Use acoordinate system where the origin is at
1. 0 answers
2. asked by john
3. 933 views
A scale model racing car is 11 inches long, 3 inches wide, and 2 inches tall. The actual racing car is show at the right. How
1. 4 answers
2. asked by Kim
3. 931 views
You walk 50 m to the north, then turn 60° to your right and walk another 45 m. How far are you from where you originally
1. 0 answers
2. asked by Sharefa
3. 916 views
A ski trail makes a vertical descent of 77 m. A novice skier, unable to control his speed, skis down this trail and is lucky
1. 0 answers
2. asked by Angel
3. 908 views
A skier starts from rest at the top of a hill. The skier coasts down the hill and up a second hill, as the drawing illustrates.
1. 0 answers
2. asked by Candy
3. 904 views
the population P (in 1000s) of a town can be modeled by P = 2 absolute value t-5 +6, where t = 0 represent 1990. During which
1. 0 answers
2. asked by Anonymous
3. 897 views
We have a group of 75 people and for their raw scores, you are given the Mean (M = 30) and variance (VAR = 16). Assuming a
1. 0 answers
2. asked by james akbar
3. 893 views
explain why a child on a swing comes to rest directly below the top of the swinng
1. 0 answers
2. asked by Sarah
3. 891 views
Tap A was turned on to fill a rectangular tank of 50 cm by 40 cm by 28 cm with water at a rate of 6 liters per minute. After 2
1. 1 answer
2. asked by T
3. 886 views
I need to find the order of a reaction with respect to the reactants.I set up my equation like this: 5.33e-2 M / 2.66e-2M =
1. 1 answer
2. asked by Hannah
3. 883 views
susan is making punch for her birthday party. the recipe makes 2 quarts. if she makes four times the recipe, how many gallons of
1. 2 answers
2. asked by sharon
3. 883 views
Suppose that 2,000 scientists compute 90% confidenceintervals for parameters they are interested in. How many of these intervals
1. 0 answers
2. asked by Erika
3. 883 views
You walk 50 m to the north, then turn 60° to your right and walk another 45 m. How far are you from where you originally
1. 2 answers
2. asked by Sharefa
3. 882 views
Two identical cars (m = 1350 kg) are traveling at the same speed of 23.9 m/s. They are moving in the directions shown in the
1. 0 answers
2. asked by Candy
3. 880 views
A cylindrical tin can has a radius of 4.5cm and a height of 5 cm(a)What is the surface area of the can (b)What is its volume?
1. 4 answers
2. asked by Montel
3. 868 views
This exercise is based on the following table, which lists interest rates on long-term investments (based on 10-year government
1. 1 answer
2. asked by Rick
3. 853 views
A ski trail makes a vertical descent of 77 m. A novice skier, unable to control his speed, skis down this trail and is lucky
1. 0 answers
2. asked by Angel
3. 853 views
add 3y-5 to y+16
1. 2 answers
2. asked by marcia
3. 849 views
A cylindrical object of volume V is immersed completely in a liquid. � is thedensity of the object and �L is the density of the
1. 0 answers
2. asked by Tom
3. 836 views
A ship leaves the island of Guam and sails a distance 265 km at an angle 41.0 north of west.***In which direction must it now
1. 1 answer
2. asked by Sharefa
3. 831 views
There are 24 counters. How many counters could you add without having to regroup? Why?
1. 5 answers
2. asked by joslyn
3. 826 views
2H2(g)+S2----------->2H2SA.)how would the equilibrium be affected given the following: - increase in temperature= - increase in
1. 1 answer
2. asked by Mckayla
3. 809 views
Use this equation to estimate typing speed, S=w/5-2e, where S is the accurate typing speed, w is the number of words typed in 5
1. 1 answer
2. asked by Katie
3. 804 views
A high-jumper clears the bar and has a downward velocity of -6.00 m/s just before landing on an air mattress. The mass of the
1. 2 answers
2. asked by Candy
3. 799 views
Factor out the greatest common factor in the expression?11y^5-55y^2
1. 1 answer
2. asked by Brandy
3. 790 views
complete the blank with the correct form of verb.Un equpio ___________ y el otro gana. (perder) i know it means one team wins
1. 13 answers
2. asked by eiizabeth
3. 790 views
A pile of gravel is conical in shape. If the diameter is approximately 6.8m and the height is 2.8m, what is the volume of gravel
1. 2 answers
2. asked by Montel
3. 788 views
A roller coaster (491 kg) moves from A (1.09 m above the ground) to B (26.3 m above the ground). Two non-conservative forces are
1. 0 answers
2. asked by Candy
3. 787 views
A small rocket is fired directly upwards with an initial velocity of 100m/s, How many seconds will it taketo reach its maximum
1. 2 answers
2. asked by Natasha
3. 787 views
The coordinates of the vertices of CDE are C(1, 4), D(3, 6), and E(7, 4). If the triangle is reflected over the line y = 3, what
1. 1 answer
2. asked by Sara
3. 783 views
This exercise is based on the following table, which lists interest rates on long-term investments (based on 10-year government
1. 1 answer
2. asked by Rick
3. 774 views
Historically, officials from 23 northeastern colleges with selective admissions policies and high tuition met each spring to
1. 1 answer
2. asked by jon
3. 770 views

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