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Questions Asked on April 6, 2012

A solution contains 0.0200 M Pb2 (aq) and 0.0200 M Sr2 (aq). If we add SO42–(aq), what will be the concentration of Pb2 (aq)
1. 2 answers
2. asked by Jematormal91
3. 7,957 views
A solution contains 0.0500 M Ca2 (aq) and 0.0350 M Ag (aq). What will be the concentration of Ca2 (aq) when Ag2SO4(s) begins to
1. 8 answers
2. asked by Jematormal91
3. 7,173 views
Which is reduced in the following reaction:Cr2O72-+6S2O32-+14H+>2Cr3+ + 3S4O62- + 7H20 A. H+ B. Cr6+ C. S4O62- D. S2+ E. O2- I
1. 1 answer
2. asked by Debbie
3. 6,648 views
Sal keeps quarters,nickels, and dimes in a jar. He has a total of 52 coins. He has three more quarters than dimes and five fewer
1. 3 answers
2. asked by micheal Garcia
3. 5,583 views
A voltaic cell is constructed that is based on the following reaction.Sn2+(aq) + Pb(s) -> Sn(s) + Pb2+(aq) (a) If the
1. 2 answers
2. asked by DAN
3. 5,348 views
Which is the oxidizing agent in the reaction below.Cr2O72- + 6S2O32- +14H+ > 2Cr3+ + 3S4O62- +7H20 A. Cr3+ B. S4O62- C. Cr2O62-
1. 2 answers
2. asked by Debbie
3. 5,187 views
1. What is the pH of a solution whose [H3O+] is 1 X 10^ -5 M?2. What is the [H3O+] concentration of a solution with a pH of 9?
1. 3 answers
2. asked by Chris
3. 3,554 views
Given that f(x) =x^3-kx^2-2x+1 gives a remainder k when divided by x-k,find the value of k
1. 2 answers
2. asked by musuma
3. 3,220 views
A proton is located at a distance of 0.430 m from a point charge of +8.30 µC. The repulsive electric force moves the proton
1. 1 answer
2. asked by DCM
3. 2,635 views
A violin string vibrates at 440 Hz when unfingered. At what frequency will it vibrate if it is fingered one fourth of the way
1. 1 answer
2. asked by Aaron
3. 2,420 views
Twins who are 19.0 years of age leave the earth and travel to a distant planet 12.0 light-years away. Assume that the planet and
1. 2 answers
2. asked by Jim
3. 2,081 views
Based on electronegativity values, which bond has the highest degree of ionic character:H--S Si--Cl Cs--Br?
1. 1 answer
2. asked by Britt
3. 2,042 views
Twenty-five members of the eighth grade class at Park Center Middle School are going to a museum and then to lunch. Each student
1. 6 answers
2. asked by nay nay
3. 1,839 views
A triply ionized beryllium atom (Be3+) has only one electron in orbit about the nucleus. What is the radius of the ion when it
1. 5 answers
2. asked by DCM
3. 1,596 views
Sole proprietorships produce only a small fraction of annual sales in the U.S. economy because sole proprietorshipsA. are the
1. 1 answer
2. asked by Zach Ketchup
3. 1,564 views
If ON=2x-3, LM=7x+2, NM=x+6, and OL=6y-3, find the values of x and y for which LMNO must be parallelogram.
1. 1 answer
2. asked by Lisa
3. 1,501 views
A glass windowpane in a home is 0.62 cm thick and has dimensions of 1.30 m × 1.72 m. On a certain day, the indoor temperature
1. 1 answer
2. asked by kevin
3. 1,490 views
The area of a rectangular field is x^2-x-72 m^2. The length of the field is x+8 m. What is the width of the field in meters?
1. 1 answer
2. asked by joshua
3. 1,479 views
Find the indicated angle è. (Use either the Law of Sines or the Law of Cosines, as appropriate. Assume a = 95 and c = 137(angle
1. 6 answers
2. asked by Adam
3. 1,344 views
Question 4-6 refer to : 3Ag(s) + 4HNO3(AQ) = 3AGNO3(aq) + NO(g) + 2h2o(l)4. How many moles of NO can be produced by the reaction
1. 1 answer
2. asked by jhong
3. 1,326 views
A 0.150 M solution of nitrous acid (HNO2) is made. Ka = 4.5 x 10-41. Show the equilibrium which occurs when this acid is
1. 1 answer
2. asked by Tiri
3. 1,286 views
Jake has two similar cylindrical pipes. The radius of the first cylindrical pipe is 5 cm. The circumference of the second
1. 1 answer
2. asked by how do i start working on this problem
3. 1,281 views
a) Suppose a bimetallic strip is constructed of copper and steel strips of thickness 1.1 mm and length 29 mm, and the
1. 1 answer
2. asked by Anonymous
3. 1,232 views
explain why the bond angles found for the molecules below is as given below.Methane 109.5 Ammonia 107.5 water 104.5
1. 2 answers
2. asked by John
3. 1,219 views
Write about what happens during a doctor¡¯s or dentist¡¯s visit. Describe what patients do when they arrive at the office.
1. 2 answers
2. asked by Celest
3. 1,219 views
Lake Erie contains roughly 4.00 1011 m3 of water.(a) How much energy is required to raise the temperature of that volume of
1. 1 answer
2. asked by kevin
3. 1,199 views
A bubble located 0.200m beneath the surface of a glass of beer rises to the top.the air pressure at the top of the glass is
1. 1 answer
2. asked by Neptoh
3. 1,185 views
I wanted to calculate the theoretical and actual yield of aspirin.mass of salicylic acid = 2.005 g But isn't salicylic acid
1. 3 answers
2. asked by Priscilla
3. 1,179 views
Janice found two sea shells when she went to the beach. They appear to be almost the same size, but they have different shapes.
1. 1 answer
2. asked by Sara HELP ME PLEASE
3. 1,169 views
Sal made a map of his neighborhood.According to his map,Sal's house is 6 units away from the grocery store. The grocery store is
1. 5 answers
2. asked by Bebe
3. 1,165 views
There is not a book.There are not books. There is no orange. There are no oranges. There is no any book. There are no any books.
1. 1 answer
2. asked by Connie
3. 1,161 views
A rectangular storage container with an open top is to have a volume of k cubic meters. The length of its base is twice its
1. 5 answers
2. asked by Nick
3. 1,134 views
The _____ limits the actions of government leaders.
1. 3 answers
2. asked by Zach Ketchup
3. 1,124 views
1. The graph of the equation y = x2 – 3 is symmetric with respect to which of the following? The answer is the y-axis . why?2.
1. 1 answer
2. asked by billy
3. 1,092 views
A 650 N student is Rollerblading at a velocity of 7.8 m/s [W] when the student trips and slides horizontally along the trail,
1. 1 answer
2. asked by Melissa
3. 1,079 views
Find to the nearest degree, all values of ө less than 360˚ that satisfy the equation 2tan^2θ-2tanθ=3
1. 2 answers
2. asked by Rach
3. 1,075 views
a carnival ride is made so that at a certain point the floor can be lowered and the people inside don't fall. if this carnival
1. 1 answer
2. asked by Ren
3. 1,075 views
I am completely stuck on these three questions. I have read my chapter, but I am still doubting that I got the answers correct.1
1. 0 answers
2. asked by Joy
3. 1,058 views
A steel rod of length 1 m is welded to the end of an aluminum rod of length 2 m (lengths measured at 23 °C). The combination
1. 2 answers
2. asked by Anonymous
3. 1,049 views
Sulfur trioxide gas, one of the causes of acid rain, is produced in the upper atmosphere when oxygen reacts with sulfur dioxide
1. 1 answer
2. asked by Abbagail
3. 1,046 views
The circumference of a sphere was measured to be 82 cm with a possible error of 0.5 cm. Use linear approximation to estimate the
1. 0 answers
2. asked by bobby
3. 1,039 views
how do u draw a detailed particle diagram showing chemical and physical changes in rocks? I actaully found the sheet on the
1. 2 answers
2. asked by not planning 2 tell u
3. 1,037 views
Find the indicated angle è.(Use either the Law of Sines or the Law of Cosines, as appropriate. Assume a = 110 and c = 136
1. 1 answer
2. asked by Mike
3. 1,006 views
3Ag(s) + 4HNO3(AQ) = 3AGNO3(aq) + NO(g) + 2h2o(l)How many grams of AgNO3 can be produced by recating completely 88.0g of Ag?
1. 1 answer
2. asked by jhong
3. 965 views
If the coefficient of kinetic friction is 0.25 , how much horizontal force is needed to pull each of the following masses along
1. 1 answer
2. asked by Melissa
3. 954 views
How do you remeber the primary and secondary colours?
1. 2 answers
2. asked by not plannning to tell u
3. 953 views
A 40-g block of ice is cooled to−71°C and is then added to 590 g of water in an 80-g copper calorimeter at a temperature of
1. 0 answers
2. asked by kevin
3. 951 views
Hello,I am writing a term paper on Ted Bundy and Danny Rolling and I not sure of some of the answers for the paper. One of the
1. 1 answer
2. asked by rainy
3. 950 views
what radioactive isotope would be most useful in dating a mastodont bone ?why?
1. 0 answers
2. asked by fufawoofa
3. 942 views
List the terms without changing the expression. 21x+21y
1. 2 answers
2. asked by Hanna
3. 938 views
You need to choose an individual or event in American History to 1877 and make an argument about why the person or event is
1. 1 answer
2. asked by Anonymous
3. 925 views
Use the remainder theorem to find which of the following is not a factor of x3 + 12x2 + 47x + 60the answer is x-5 but idk why
1. 1 answer
2. asked by Bob
3. 916 views
I need a hypothesis on:How does the green house effect influence temperature on Earth? Can you plz not give a link that doesn't
1. 1 answer
2. asked by M.
3. 912 views
A voltaic cell is constructed that uses the following half-cell reactions.Cu+(aq) + e− -> Cu(s) I2(s) + 2 e− -> 2 I−(aq)
1. 1 answer
2. asked by MIKE
3. 877 views
How was the civil rights movement of the 1950s and 1960s a continuation of the Reconstruction-era struggle for blacks to achieve
1. 1 answer
2. asked by Britt
3. 816 views
A sample of an ideal gas at 1.00 atm and a volume of 1.61 L was placed in a weighted balloon and dropped into the ocean. As the
1. 0 answers
2. asked by catey
3. 801 views
At what depth in water is the pressure equal to 2.0m atmosphere?
1. 2 answers
2. asked by Momito
3. 797 views
DKLM is a rhombus.If AM = 4x, AK = 5x-3, and DL = 10, find x.
1. 2 answers
2. asked by Rye
3. 780 views
A tug of war has started over a popular toy. One child pulls with a force of 2.0*10^1 N[W], a second child pulls with a force of
1. 1 answer
2. asked by Melissa
3. 762 views
A 0.150 M solution of nitrous acid (HNO2) is made. Ka = 4.5 x 10-41. Show the equilibrium which occurs when this acid is
1. 1 answer
2. asked by Tiri
3. 741 views
Determine the magnitude of the force of gravity acting on a 340 kg satellite , 850 km above Earth's surface.
1. 1 answer
2. asked by Melissa
3. 741 views
How many liters of chlorine gas at 1.00 atm and 20ºC will be required to oxidize 167 grams of bromide ions to molecular
1. 2 answers
2. asked by M
3. 730 views
If the distance from the moon to the Earth decrease from 230,000 miles (which it is today) to 20,000 miles, what affect would
1. 1 answer
2. asked by Sheyla
3. 705 views
Imagine making a tent in the shape of a right prism whose cross-section is anequilateral triangle (the door is on one of the
1. 2 answers
2. asked by Katie
3. 698 views
A clock has an aluminum pendulum with a period of 1.000 s at 20.2 °C. Suppose the clock is moved to a location where the
1. 1 answer
2. asked by Anonymous
3. 697 views
Wheel Industries is considering a three-year expansion project. The project requires an initial investment of $1.5 million. The
1. 0 answers
2. asked by Anonymous
3. 691 views
A mass of 1.0 kg is located at the end of a very light and rigid rod 44 cm in length. The rod is rotating about an axis at its
1. 1 answer
2. asked by Jermaine
3. 689 views
In the hydrogen atom the radius of orbit B is sixteen times greater than the radius of orbit A. The total energy of the electron
1. 1 answer
2. asked by DCM
3. 685 views
two resistors are connected in parallel. Their resistances are 8 ohms and 17 ohms. What is the resistance (R) of the
1. 1 answer
2. asked by chels
3. 681 views
What is the relationship between z-scores and percentages?
1. 1 answer
2. asked by Betty
3. 679 views
what is the total interest for $2596.40with a interest rate of %9 percent.with a tiime of 7months 97.37 136.26 136.31 233.68 my
1. 5 answers
2. asked by susue
3. 678 views
Coach Willful believes that the best sixth-grade soccer players are 58 inches tall, and he will accept his ideal as players on
1. 2 answers
2. asked by Matt
3. 670 views
(a) Suppose a bimetallic strip is constructed of copper and steel strips of thickness 1.1 mm and length 29 mm, and the
1. 2 answers
2. asked by Anonymous
3. 663 views
In my previous post I wrote"You should have used the past simple to refer to both Prospero's and Miranda's behaviours towards
1. 1 answer
2. asked by Matthew
3. 662 views
Participants in a psychology experiment were able to memorize an average of M words in t minutes, where M = −0.001t3 + 0.1t2.
1. 1 answer
2. asked by j
3. 659 views
how do you compare the symbolic method for solving linear equations to the method of using a table?PLEASE HELP MY BUS COMES IN
1. 2 answers
2. asked by malisa
3. 657 views
If agglutination occurs when blood with a certain antigen and blood with the corresponding antibody mix, why is blood type O the
1. 0 answers
2. asked by Leasha
3. 643 views
A person takes in a breath of 0 degrees celsius air and holds it until it warms to 37 degrees celsius. The air has an initial
1. 0 answers
2. asked by Tiera
3. 639 views
Factor 21x + 35y
1. 1 answer
2. asked by geo
3. 638 views
A woman is standing in the ocean, and she notices that after a wave crest passes, five more crests pass in a time of 42.0 s. The
1. 1 answer
2. asked by meemee
3. 638 views
the first challenge to the confidence of these amateur renovators come with buying tools or equipment
1. 1 answer
2. asked by bouba
3. 637 views
Lead 212/82Pb (atomic mass = 211.991871 u) is converted into bismuth 212/83Bi (atomic mass = 211.991255 u) via β- decay. What
1. 1 answer
2. asked by DCM
3. 636 views
(a) Suppose a bimetallic strip is constructed of copper and steel strips of thickness 1.1 mm and length 29 mm, and the
1. 0 answers
2. asked by please
3. 633 views
Calculate the [H+] in a solution containing 1.00 M hydroflouris acid (Ka=7.2 x 10^-4) and .50 M sodium fluoride
1. 1 answer
2. asked by Hannah
3. 633 views
The per capita consumption of coffee by people in the United States in a recent year was normally distributed, with a mean of
1. 1 answer
2. asked by jackie
3. 632 views
A rectangular block of wood is 40cm wide, 60cm long and 30cm deep. If its relative density is 0.7 and it floats with its 30cm
1. 0 answers
2. asked by Momito
3. 627 views
suppose your business caters a party august 23.according to the contract ,your client will pay the 2500 bill on september
1. 0 answers
2. asked by susue
3. 618 views
What is the name of the tissue that transport water in plants?
1. 1 answer
2. asked by DK
3. 618 views
what is the accounting system where you record revenue when the business earns it,and expenses at the time the business incurs
1. 0 answers
2. asked by susue
3. 617 views
.050 mole of weak acid (HA) is dissolved in enough water to make 1.0 L of solution. The pH of this solution is 3.50. What is the
1. 1 answer
2. asked by Hannah
3. 607 views
A hollow aluminum cylinder 22.0 cm deep has an internal capacity of 2.000 L at 21.0°C. It is completely filled with turpentine
1. 0 answers
2. asked by kevin
3. 599 views
what is the personification of this sentence The wind whispered through the dark and gloomy forest.
1. 1 answer
2. asked by tony
3. 598 views
Can you please help me check this paragraph containing several grammar mistakes? Thank you.1) Caliban is a sort of monster half
1. 2 answers
2. asked by Matthew
3. 586 views
I am completely stuck on these two questions. I have read my chapter, but I am still doubting that I got the answers correct.1.A
1. 0 answers
2. asked by Joy
3. 584 views
my sister have this question for biology how they get caramel into caramilk bar? she think the inject it in there, but she want
1. 5 answers
2. asked by Mohammad
3. 573 views
A boat in calm seas travels 13km east and 35 km north. Find the distance and direction of the trip, relative to to the north.
1. 1 answer
2. asked by nicole
3. 571 views
1.Describe the pathway of an unfertilized egg as it travels through the female reproductive system
1. 1 answer
2. asked by RAM
3. 571 views
I left out the following sentences.Thank you very much. I find it difficult to reorganize the sentences. 1) Prospero may be seen
1. 1 answer
2. asked by Matthew
3. 557 views
A particle of mass m = 3.04kg is suspended from a fixed point by a light inextensible string of length = 1.11m. You are required
1. 1 answer
2. asked by Anonymous
3. 556 views
I am completely stuck on these two questions. I have read my chapter, but I am still doubting that I got the answers correct.1.A
1. 0 answers
2. asked by Joy
3. 550 views

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