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Questions Asked on March 21, 2011

In the reaction 2H2S + 3O2 -> 2SO2 +2H2O, the oxidizing agent is1.oxygen 2.water 3.sulfur dioxide 4.hydrogen sulfide oxygen?
1. 5 answers
2. asked by Alexis
3. 9,441 views
which equation represents an oxidation-reduction reaction?1.HCl+KOH-->KCl+H2O 2.4HCl+MnO2-->MnCl2+2H2O+Cl2
1. 1 answer
2. asked by Alexis
3. 6,158 views
can you please help me solve this problem if dy/dx=ycosx and y=3 when x=0, then y=
1. 1 answer
2. asked by christine
3. 5,237 views
what occurs during the reaction below4Hcl+MnO2-->MnCl2+2H2O+Cl2 1.the manganese is reduced and its oxidation number changes from
1. 3 answers
2. asked by Tina
3. 5,101 views
Two metal spheres having charges of +4.0 x 10^-6 coulomb and +2.0 x 10^-5 coulomb, respectively, are brought into contact and
1. 6 answers
2. asked by Dom
3. 4,375 views
an object is observed to fall from a bridge, striking the water below 3.03s ...with what velocitydid it strike the water?what
1. 5 answers
2. asked by nano
3. 4,020 views
Explain why the freezing point of a pure solvent is constant, whereas the freezing point of a solution decreases with steady
1. 1 answer
2. asked by Cassie
3. 3,799 views
A spacecraft in the shape of a long cylinder has a length of 100 m, and its mass with occupants is 1770 kg. It has strayed too
1. 1 answer
2. asked by Steve
3. 3,531 views
In the reaction: Cu(s) + 2 Ag+(aq) ---> Cu2+(aq) + 2 Ag(s, the oxidizing agent is ?1.Cu 2.Cu2+ 3.Ag+ 4.Ag i know its Ag but is
1. 3 answers
2. asked by Alexis
3. 3,116 views
Zn(s)+Cu2+(aq)-->Zn2+(aq)+Cu(s)which particles must be transferred from one reactant to the other reactant ? 1.ions 2.neutrons
1. 1 answer
2. asked by Alexis
3. 3,026 views
A 2.40 m length of wire is held in an east-west direction and moves horizontally to the north with a speed of 15.1 m/s. The
1. 2 answers
2. asked by Stefan
3. 3,008 views
Which expression is equivalent to -5(n-9) ?
1. 10 answers
2. asked by Jan
3. 2,956 views
Amanda is 12 years old. She is 2/7 times as old as her father. How many years ago was her father 4 times as old as Amanda.
1. 5 answers
2. asked by Katherine
3. 2,948 views
3.92g of a nondissociating compound are dissolved in 400.g of liquid benzene. The freezing point of the solution is 5.19 degrees
1. 7 answers
2. asked by Cassie
3. 2,643 views
Which of the following is least likely to dissolve in the polar solvent water? oil, salt, sugar, ethanol.
1. 2 answers
2. asked by ilyrae
3. 2,581 views
what does "sitting-hen" mad mean
1. 4 answers
2. asked by Anonymous
3. 2,499 views
Which of the following forms of energy transfer can occur in a vacuum?A) conduction B) convection C) radiation D) all of the
1. 2 answers
2. asked by Kaitlin
3. 2,446 views
1.) A small sphere of charge 2.4 μC experience a force of 0.36 N when a second sphere of unknown charge is placed 5.5 cm from
1. 1 answer
2. asked by Christine
3. 2,437 views
Can anyone explain this to me? im not understanding and ive been looking fo a while for info and i need help its due todayExamin
1. 3 answers
2. asked by bobbi
3. 2,433 views
5.00kg glycol, C2H4(OH)2, [this is anti-freeze!] is added to your radiator. If your radiator contains 12.0kg of water, what
1. 2 answers
2. asked by Cassie
3. 2,420 views
One inch on a map represents 800 miles. It is 3 1/2 inches on the map from Cape Town, South Africa to Nairobi, Kenya. How many
1. 9 answers
2. asked by Reed
3. 2,411 views
A constant horizontal pull of 8.25 N drags a box along a horizontal floor through a distance of 19.1 m.Q How much work does the
1. 1 answer
2. asked by nancy
3. 2,317 views
write balanced equation of the reaction of bromine and sodium thiosulfate
1. 2 answers
2. asked by swas
3. 2,207 views
A 5.0-gram sample of gold and a 5.0-gram sample of iron both absorb exactly 25 calories of energy. The specific heat of gold is
1. 6 answers
2. asked by Kaitlin
3. 2,190 views
the edges of 3 cubes are consecutive odd intergers. if the cubes aer stacked on a desk as shown, the total exposed surface area
1. 7 answers
2. asked by Josh
3. 1,956 views
A firm has forecasted sales of $3,000 in April, $4,500 in May and $6,500 in June. All sales are on credit. 30% is collected the
1. 1 answer
2. asked by Adam
3. 1,882 views
10mL of 0.10M HCl is given. What is the pH? How many milliliters of 0.10M NaOH would be required to neutralize it? What is the
1. 1 answer
2. asked by Becky
3. 1,859 views
E3-5 Drew Carey Company has the following balances in selected accounts on December 31,2008.Accounts Receivable $ -0-
1. 1 answer
2. asked by Mickey
3. 1,831 views
in the reaction:Ni+SN4+-->Ni2+ (+)Sn2+ which species has been reduced?1.Ni 2.Sn4+ 3.Ni2+ 4.Sn2+ i know its def Sn but im not
1. 1 answer
2. asked by Alexis
3. 1,825 views
A mixture of ethyne gas (C2H2) and methane gas (CH4) occupied a certain volume at a total pressure of 16.8 kPa. When the sample
1. 2 answers
2. asked by Kim
3. 1,812 views
A rectangular garden is fenced on three sides with a wall forming the fourth side. the total length of the fence is 70m. the
1. 3 answers
2. asked by Ana
3. 1,755 views
A flat (unbanked) curve on a highway has a radius of 230.0 . A car rounds the curve at a speed of 28.0 .What is the minimum
1. 1 answer
2. asked by Anonymous
3. 1,713 views
What happens to the gravitational force between two objects if their separation is doubled? The force of attraction is doubled.t
1. 1 answer
2. asked by Holly
3. 1,639 views
The arm of a crane at a construction site is 13.1 m long, and it makes an angle of 20° with the horizontal. Assume that the
1. 1 answer
2. asked by Krista
3. 1,555 views
What do you do after school?1. I go back home directly and do my homework in my room, and then I watch TV for two hours. 2. I go
1. 1 answer
2. asked by rfvv
3. 1,431 views
A flywheel with a diameter of 1 m is initially at rest. Its angular acceleration versus time is graphed in the figure.(a) What
1. 1 answer
2. asked by Help..Help !!!!
3. 1,423 views
In each of two different fourth-grade classes, 1/3 of the members are girls, Does each class have the same number of girls.
1. 2 answers
2. asked by lenora
3. 1,399 views
What would be the resulting molarity of a solution made by dissolving 21.9 grams of KCl in enough water to make an
1. 0 answers
2. asked by ilyrae
3. 1,222 views
Is this a okay paragraph? Can someone help me with it?People write on their wall about their daily life in social networking
1. 2 answers
2. asked by Anna
3. 1,218 views
i need help writing a five paragraph persuasive essay on this The Debate Over Big Business in the 19th century on whose side was
1. 5 answers
2. asked by Stanley
3. 1,204 views
Write several sentences describing a recent interaction with a friend or family member about personal finance or credit cards.
1. 1 answer
2. asked by Debbe
3. 1,203 views
Name three major mountain ranges and state to what continents they belong? My answer is--- Rocky Mountains,North AmericaAndes
1. 1 answer
2. asked by Reed
3. 1,199 views
i cant figure this one out! :(a balloonist is preparing a trip in a helium balloon. the trip begins in early morning at a temp
1. 0 answers
2. asked by Joan
3. 1,196 views
In each of the following order the decimals from least to greatest.a. 24.9419, 24,.942, 24.94189, 24.94199
1. 3 answers
2. asked by lenora
3. 1,195 views
Use mathematical induction to prove the truth of each of the following assertions for all n ≥1.n³ + 5n is divisible by 6 I
1. 4 answers
2. asked by Francesca
3. 1,193 views
consider the equation for the following questions2C2H6(g) + 7o2(g) 4 CO2(g) +6H2O(g) How many grams of CO2 are produced when
1. 2 answers
2. asked by monica
3. 1,165 views
Gamma rays of photon energy 0.511 MeV are directed onto an aluminum target and are scattered in various directions by loosely
1. 0 answers
2. asked by Vanda
3. 1,159 views
a gas bulb is connected to an open end manometer. the pressure in the bulb is .355 torr MORE than atmospheric pressure. If the
1. 2 answers
2. asked by Joanie
3. 1,152 views
A LADY IS GETTING MARRIED IN 2DAYS TIME.HER HUSBAND BUYS HER A DIAMOND RING.ON THE DAY OF HER WEDDING HER HUSBAND PLACES THE
1. 1 answer
2. asked by Sivashen
3. 1,144 views
If the asteroid is moving at a constant speed in its orbit, does this also mean it is moving at a constant velocity? Explain
1. 0 answers
2. asked by aaron
3. 1,119 views
what was the reason for baltimore's successful shipyards?
1. 5 answers
2. asked by sushi
3. 1,098 views
what does the simile as wet as a dirt dauber's nest mean
1. 3 answers
2. asked by Anonymous
3. 1,095 views
We titrated Sprite with 0.1051 M standard NaOH. I've ploted three different titrations and am supposed to use the titration
1. 4 answers
2. asked by redgy
3. 1,071 views
what are the four divisive issues of the 1820s
1. 4 answers
2. asked by lexis bowren
3. 1,061 views
If 45.8 grams of MgO are dissolved in 205 grams of water, what is the concentration of the solution in percent by mass?
1. 0 answers
2. asked by ilyrae
3. 1,050 views
Two equal mass cars collide head to tail and their bumpers lock. One car has a velocity of 10 m/s and the other is at rest. What
1. 0 answers
2. asked by Rodney
3. 1,046 views
A metal sphere has a net negative charge of 11 x 10^-6 coulomb. Approximately how many more electrons than protons are on the
1. 0 answers
2. asked by Dom
3. 1,038 views
Can anyone summarize the quadratic formula? I am trying to understand this for algebra without any unnecessary and overused
1. 2 answers
2. asked by Micah
3. 1,020 views
The side of a fish tank is made up of a thick parallel sided piece of glass.The refractive index for glass is 1.52.A beam of
1. 1 answer
2. asked by Sivashen
3. 1,017 views
how do you solve the initial value problem by separation of variables dy/dx=-x^2y^2, y(4)=4
1. 0 answers
2. asked by kimberly
3. 991 views
Balance this equation:Cu + H+(aq) + NO3-(aq) -- Cu2+(aq) + NO2 + H2O
1. 0 answers
2. asked by Jo
3. 989 views
Herman Company has three products in its ending inventory. Specific per unit data for each of the products are as follows:Requir
1. 1 answer
2. asked by Bobbi Loffredo
3. 979 views
If you were to move the load by applying force from the top, what kind of machine might be the most appropriate to lift the load
1. 1 answer
2. asked by Jane
3. 976 views
If 3.2 moles of NaCl are dissolved in enough water to make a 0.98-liter solution, what is the molarity of the solution?
1. 3 answers
2. asked by ilyrae
3. 972 views
A skier of mass 72 kg is pulled up a slope by a motor-driven cable.(a) How much work is required to pull him 65 m up a 30°
1. 1 answer
2. asked by Allie
3. 964 views
a redox reaction is a reaction in which1.only reduction occurs 2.only oxidation occurs 3.reduction&oxidation occur at the same
1. 1 answer
2. asked by Alexis
3. 963 views
The first term of a quadratic sequence is 8 and it's fourth is 32. If the second difference of the sequence is 2, find Tn.
1. 2 answers
2. asked by Tk
3. 960 views
Another quick question..."A Very Old Man with Enormous Wings" seems to be told in a third-person omniscient narrative, because
1. 1 answer
2. asked by Emily
3. 943 views
The nearpoint of an eye is 123 cm. A corrective lens is to be used to allow this eye to clearly focus on objects 25 cm in front
1. 3 answers
2. asked by Jim
3. 934 views
The electron in a hydrogen atom is excited and makes a transition from n=2 to n=7a. calculate the energy of the photon absorbed
1. 1 answer
2. asked by Tina
3. 920 views
Calculate the pH of a buffer solution that contains 0.23 M benzoic acid (C6H5CO2H) and 0.28 M sodium benzoate (C6H5COONa). [Ka =
1. 4 answers
2. asked by Adrianna
3. 894 views
For the period from 1500-1830, compare North American racial ideologies and their effects on society with Latin
1. 1 answer
2. asked by Nancy
3. 891 views
A sledge loaded with bricks has a total mass of 18.9 kg and is pulled at constant speed by a rope inclined at 19.3° above the
1. 1 answer
2. asked by Alexandria
3. 882 views
The gas tank of a car holds 20 gallons of gas. A gallon of gas costs $1.22. When the tank was filled it cost $20. About what
1. 2 answers
2. asked by Sammy
3. 872 views
A person sees clearly wearing eyeglasses that have a power of −2.92 diopters and sit 2.22 cm in front of the eyes.If the
1. 0 answers
2. asked by Jim
3. 868 views
Two objects are mocing about so that their total momentum is zero. What can be said about their kinetic energy? Choose the most
1. 0 answers
2. asked by Paige
3. 860 views
a gaseous mixture contains 1 mol of O2 and 2 mol of CO2, exerting a total pressure of 1.5 atm. what amount of CH4 must be added
1. 1 answer
2. asked by Joanie
3. 850 views
what does the sound...rolled like the beat of a jungle drum
1. 4 answers
2. asked by Anonymous
3. 850 views
a model rocket shot up a to a point 20 m above the ground, hitting a smokestack, and then dropped straight down to a point 11 m
1. 1 answer
2. asked by kourtney
3. 845 views
Lab on Determination of copper in brass. I have mass of brass at .1011g. My concentration of diluted solution's unknown is
1. 1 answer
2. asked by Tam
3. 837 views
(a) What is the escape speed on a spherical asteroid whose radius is 535 km and whose gravitational acceleration at the surface
1. 0 answers
2. asked by Steve
3. 835 views
An rectangular above-ground swimming pool is 9 m long and 4 m wide. The pool wall has a constant height of 3 m above the ground.
1. 2 answers
2. asked by sam
3. 825 views
The Yerkes refracting telescope has a 1 mdiameter objective lens of focal length 20 m.Assume it is used with an eyepiece of
1. 0 answers
2. asked by Jim
3. 817 views
What are the odds in favor of rolling a 5 if you roll a 1-6 number cube?
1. 3 answers
2. asked by Jan
3. 796 views
Formalize the following english statements as quantified WFF.Let S(x) be the predicate "x is a student," B(x) the predicate "x
1. 0 answers
2. asked by tammy
3. 796 views
A 2.9-kg pile of aluminum ( = 2.70 g/cm3) cans is melted, and then cooled into a solid cube. What is the volume of the cube?
1. 3 answers
2. asked by Holly
3. 793 views
I'm having trouble writing an introduction to this literary analysis. It's for "A Very Old Man with Enormous Wings". I'm
1. 4 answers
2. asked by Emily
3. 788 views
An infinite thread of charge density lamda lies along Z axis. The potential difference between the points A(4,3,4) and B
1. 0 answers
2. asked by Joshua
3. 786 views
help please....What attributes make someone attractive? How does proximity influence attractiveness? Are people with similar
1. 0 answers
2. asked by Brecken
3. 776 views
1. This is Shrek, who is the main character in the movie, Shrek 3.2. This is Shrek, who is fun, strong and tall so that many
1. 1 answer
2. asked by rfvv
3. 766 views
A 494 kg uniform solid sphere has a radius of 0.390 m. Find the magnitude of the gravitational force exerted by the sphere on a
1. 0 answers
2. asked by Steve
3. 761 views
My instructor requested that I write a reflective prep paper for my final essay.Will I use words like (I, me, myself or
1. 0 answers
2. asked by David
3. 756 views
another question:the 20 kg block is at the top of a 10 m long inclined plane. The block starts from rest and slides without
1. 1 answer
2. asked by Nabil
3. 750 views
transportation officials tell us that 80% of drivers wear seat belt while driving. Find the probability that more then 567
1. 0 answers
2. asked by Alexis tuson
3. 747 views
Assume this asteroid has the shape of a sphere. A rock sitting on thesurface of the asteroid has a weight of 100 newtons. What
1. 1 answer
2. asked by aaron
3. 743 views
how did ancient texts and statues affect renaissance scholars?
1. 2 answers
2. asked by Anonymous
3. 727 views
Thank you very much for helping me! I forgot to include these last sentences.Can you explain me the difference between "Ought
1. 2 answers
2. asked by Mike
3. 726 views
You are trying to package a 50g egg so that it won't break after you drop it from a height of 10 meters. You decide to use wood
1. 1 answer
2. asked by Paige
3. 717 views
what is the function of the rat diastema??
1. 1 answer
2. asked by kacy
3. 715 views
Calculate the pH of a buffer solution prepared by dissolving 0.12 mole of cyanic acid, HCNO and 0.65 mole of sodium cyanate,
1. 1 answer
2. asked by Bridget
3. 714 views

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