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Questions Asked on October 20, 2010

what is the net ionic equation for manganese sulfide and hydrobromic acid?
1. 2 answers
2. asked by sandra
3. 6,034 views
A 1.9 kg block slides down a frictionless ramp, as shown in figure 8-28. The top of the ramp is 1.5 m above the ground; the
1. 2 answers
2. asked by tony
3. 5,802 views
it takes 1 cup of liquid fertilizer to make 7 1/2 gallons of spray. how much liquid fertilizer is needed to make 80 gallons of
1. 14 answers
2. asked by leticia
3. 5,686 views
Calculate q when 0.10 g of ice is cooled from 10 degrees C to -75 degrees C (C ice= 2.087 J/ g* K)
1. 1 answer
2. asked by Mai
3. 4,946 views
To no ones surprise, Joe didn't have his homework ready.A. no ones surprise B. noones surprise C. no-ones surprise D. no ones'
1. 2 answers
2. asked by john
3. 4,547 views
Assuming that Albertine's mass is 60.0 , what is , the coefficient of kinetic friction between the chair and the waxed floor?
1. 1 answer
2. asked by baby
3. 4,079 views
an aquarium holds 6 1/4 gallons of water. the water level has dropped to 4/5 of this amount. how much water should be filled?
1. 6 answers
2. asked by veronica
3. 3,791 views
A solution is prepared in which a trace or small amount of Fe+2 is added to a much larger amount of solution in which the [OH]-
1. 4 answers
2. asked by brian
3. 3,388 views
Researchers at the University of Pennsylvania School of Medicine have determined that children under 2 years old who sleep with
1. 2 answers
2. asked by Lauren
3. 3,296 views
Ka for benzoic acid, C6H5COOH, 6.5x10^-5. Calculate the pH of solution after addition of 10.0, 20.0, 30.0, and 40.0 mL of 0.10 M
1. 2 answers
2. asked by Andy
3. 3,156 views
Water (2330 g) is heated until it just begins to boil. If the water absorbs 5.53×105 J of heat in the process, what was the
1. 2 answers
2. asked by Anonymous
3. 3,074 views
You write the electron structure like this.1s2 2s2 2p6 3s2 3p6 3d10 4s1 is the neutral Cu atom. Remove the two outside electrons
1. 1 answer
2. asked by Anonymous
3. 3,057 views
which element has the ground-state electron configuration [Kr]5s^2 4d^10 5p^4
1. 1 answer
2. asked by Raynique
3. 3,039 views
A stone is dropped from a 75 m high building. when this stone has dropped 15m, a second stone is thrown downward with an initial
1. 1 answer
2. asked by elaine
3. 2,987 views
On a planet that has no atmosphere, a rocket 14.2 m tall is resting on its launch pad. Freefall acceleration on the planet is
1. 2 answers
2. asked by Maria
3. 2,889 views
CuCl2(aq) and Na2CO3(aq) are mixed.Write the balanced equation for the process.
1. 1 answer
2. asked by Bonnie
3. 2,831 views
It is necessary to have a 40% antifreeze solution in the radiator of a certain car. The radiator now has 60 liters of 20%
1. 1 answer
2. asked by Ford
3. 2,707 views
Which species will reduce Ag+ but not Fe2+?1. H2 2. Cr 3. V 4. Pt 5. Au
1. 4 answers
2. asked by Sarah
3. 2,681 views
The fuel value of hamburger is approx. 3.7 kcal/g. If a man eats 0.45 lbs of hamburger for lunch and none of the energy is
1. 1 answer
2. asked by Madalyn
3. 2,620 views
How do you find unpaired electrons in a metal ion in CuSO4·5H20?
1. 1 answer
2. asked by May
3. 2,555 views
One piece of copper jewelry at 101°C has exactly twice the mass of another piece, which is at 36.0°C. Both pieces are placed
1. 4 answers
2. asked by Cory
3. 2,370 views
What is an example of Human-Environment Interaction in Vatican City?
1. 16 answers
2. asked by Hannah
3. 2,303 views
The Question Is:"A student weighs 0.347 g of KHP on a laboratory balance. The KHP was titrated with NaOH and the concentration
1. 2 answers
2. asked by James
3. 2,259 views
A lead fishing weight with a mass of 57 g absorbs 146 cal of heat.If its initial temperature is 48^C, what is its final
1. 2 answers
2. asked by Anonymous
3. 2,209 views
Complete subject of each sentence and simple subject.Mrs. Marcus told our class about Valentine's Day.
1. 5 answers
2. asked by Rylan
3. 1,995 views
calculate the empirical formula. A chemist heats 50.00g of sulfur under controlled conditions to produce a sulfer-oxygen
1. 1 answer
2. asked by Ash
3. 1,964 views
Mary needs $9000 in 7 years. What amount can she deposit at the end of each quarter at 6% interest compounded quarterly so she
1. 2 answers
2. asked by Lacey
3. 1,950 views
Please tell me if I should use to or too in the following sentence: Anthony knew all (to, too) well that he shouldn't have eaten
1. 2 answers
2. asked by julie
3. 1,883 views
1.)The apparent weight of a passenger in an elevator is greater than his true weight? Why is that?2.) The radius of larger
1. 3 answers
2. asked by jo
3. 1,882 views
How many grams of helium must be added to a balloon containing 8.00 g of helium gas to double its volume. Assume no temp or
1. 1 answer
2. asked by Lilli
3. 1,873 views
A word made by writing the seven letters used to spell "EXAMPLE" in some order. Find how many different 'words' are possible in
1. 1 answer
2. asked by Ismail
3. 1,865 views
A 520 N cat burglar is supported by cables in the figure below. Assume the angle θ of the inclined cable is 32.0°.Find the
1. 1 answer
2. asked by Diana
3. 1,860 views
A 5.0 kg object moving in the +x direction at 5.5 m/s collides head-on with a 3.1 kg object moving in the -x direction at 4.0
1. 1 answer
2. asked by Cassia
3. 1,837 views
Aluminum is more reactive than iron, yet it is used today for a variety of applications in which iron would corrode (cans, rain
1. 1 answer
2. asked by Sarah
3. 1,782 views
a radio station emits radiation at a wavelength of 2.90 m. what is the station's frequenct in megahertz?
1. 1 answer
2. asked by Raynique
3. 1,740 views
In an accidental explosion, a satellite breaks in half while in circular orbit about earth. One half is brought momentarily to
1. 2 answers
2. asked by ed
3. 1,725 views
which is greater, the energy of one photon of orange light or the nergy of one quantum of radiation having a wavelength of
1. 1 answer
2. asked by Raynique
3. 1,714 views
If random samples, each with n = 36 scores, are selected from a normal population with m = 80 and s = 18, how much difference,
1. 1 answer
2. asked by Anonymous
3. 1,651 views
Give a counterexample to show that each of the following generalizations about the set of integers {-3,-2,-1,0,1,2,3} is false.a
1. 2 answers
2. asked by m
3. 1,639 views
orange light has a frequency of 4.8X10^14 S^-1. WHAT IS THE ENERGY OF ONE QUANTUM OF ORANGE LIGHT?
1. 1 answer
2. asked by Raynique
3. 1,627 views
what distance does the electromagnetic radiation travel in 50.0 (nu)s?
1. 3 answers
2. asked by Dana
3. 1,563 views
The Question Is:"A student weighs 0.347 g of KHP on a laboratory balance. The KHP was titrated with NaOH and the concentration
1. 1 answer
2. asked by James
3. 1,519 views
1,2,4,8,16,32,64 in exponential form?
1. 3 answers
2. asked by Aly
3. 1,517 views
An object with mass m1 = 6.00 kg, rests on a frictionless horizontal table and is connected to a cable that passes over a pulley
1. 2 answers
2. asked by Diana
3. 1,509 views
A 25 rifle bullet traveling 280 buries itself in a 3.8 pendulum hanging on a 3.0 long string, which makes the pendulum swing
1. 1 answer
2. asked by Keta
3. 1,501 views
What would happen to the caffeine if the sublimation step were performed at atmospheric pressure?
1. 2 answers
2. asked by Tammy
3. 1,401 views
the base of rectangular prism has a length of a m and a width of 4 m. if the volume is 64 cubic meters, what is the height of
1. 2 answers
2. asked by lasean
3. 1,349 views
1. What is the change in internal energy (in J) of a system that absorbs 0.677 kJ of heat from its surroundings and has 0.438
1. 0 answers
2. asked by Nevaeh
3. 1,345 views
cub scout is to eagle scout as rookie is to
1. 4 answers
2. asked by tina
3. 1,327 views
find the z- score location of a vertical line that spearates a normal distribution as described in each of the following.a. 20%
1. 1 answer
2. asked by jackie
3. 1,327 views
Gretta wants to retire in 13 years. At that time she wants to be able to withdraw $12,500 at the end of each 6 months for 10
1. 1 answer
2. asked by Katie
3. 1,317 views
"A student weighs 0.347 g of KHP on a laboratory balance. The KHP was titrated with NaOH and the concentration of the NaOH
1. 0 answers
2. asked by James
3. 1,296 views
Using the set of smallest possible integer coefficients to balance the redox equationH2O2 +MnO−4 -> O2 +Mn+2 (acidic
1. 1 answer
2. asked by Sarah
3. 1,285 views
could someone show me how to write this or set up this equation?2 ships sail from the same port, one sails dew east at 15 mph
1. 1 answer
2. asked by Greg
3. 1,232 views
How come a heavy truck and a small car can both travel safely at the same speed around an icy, banked-curve road? I would think
1. 2 answers
2. asked by Hannah
3. 1,229 views
¿Cómo se dice "I am going to bed." en español? ¿Puede se dice "Me acuesto"?
1. 2 answers
2. asked by Gray
3. 1,227 views
How do the Native Americans respond to the Spaniards in the first encounter between the two groups?
1. 2 answers
2. asked by Chante'
3. 1,185 views
I have to write a research paper and here is the topic.The paper should be on the use of a new or existing material in a new or
1. 1 answer
2. asked by Anonymous
3. 1,176 views
If the rate of inflation is 5%, what nominal interest rate is necessary for you to earn a 3% real interest rate on your
1. 1 answer
2. asked by Anonymous
3. 1,167 views
A sample of hydrogen gas was collected over water at 36 degrees celsius and 855 mmHg. The volume of the container was 6.50 L.
1. 2 answers
2. asked by lavonne
3. 1,146 views
A car drives straight off the edge of a cliff that is 58 m high. The police at the scene of the accident note that the point of
1. 2 answers
2. asked by jake
3. 1,128 views
At Irv's Cycle Rental Shop, Irv renst all knids of cycles: unicyles, tandem bikes, regualr bikes, and even tricycles for little
1. 2 answers
2. asked by Katherine
3. 1,122 views
which element has the ground-stat electron configuration [Ar]4s^2 3d^10?
1. 1 answer
2. asked by Raynique
3. 1,117 views
what is the difference between great siberian plains and lowlands of central asia
1. 1 answer
2. asked by Anonymous
3. 1,114 views
MAKE A TALL CHARTT FOR THE NUMBER OF STUDENTS IN THE THIRD FOURTH AND FIFTH GRADE CLASSES: 26,25,27,27,26,28,27
1. 2 answers
2. asked by SYDNEY
3. 1,109 views
A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 21.0 m/s. The cliff is h =
1. 1 answer
2. asked by KC
3. 1,108 views
1. while(c <= 5){ product *= c; c++; 2. while ( z > 0 ) sum = sum + z; 3. x = 1; while (x <=10 ); x++; } 4. The following code
1. 1 answer
2. asked by Anonymous
3. 1,105 views
Convert a gas pressure of 485 cmHg to atmospheres. (cm not mm!)Wouldn't you simple convert cm to mm (4850) and divide by 760
1. 0 answers
2. asked by lavonne
3. 1,103 views
all number less than 3 units from 0I need to write inequality represents each situation
1. 1 answer
2. asked by linda
3. 1,083 views
When 32.0 mL of 0.560 M H2SO4 is added to 32.0 mL of 1.12 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature rises
1. 1 answer
2. asked by Megan
3. 1,064 views
why are warm and cold fronts ussually weaker in the summer?
1. 0 answers
2. asked by kira
3. 1,048 views
A marble rolls off a table with a horizontal velocity of 1.2 m/s. The marble falls in a cup placed horizontally 0.51m from the
1. 1 answer
2. asked by Katsu
3. 1,042 views
How do I say the weather in Buenos Aires is mostly sunny. I know sunny is hace calor but how to I actually say "The weather in
1. 2 answers
2. asked by Jamie
3. 1,037 views
When I was considering what to do with my $10,000 Lottery winnings, my broker suggested I invest half of it in gold, the value
1. 2 answers
2. asked by Priscilla Pina
3. 1,032 views
A particle moves along a line so that its posistion at any t is greater than or equal to 0 is given by the function s(t)=
1. 1 answer
2. asked by Ally
3. 1,024 views
A 30.5 g sample of an alloy at 93.7°C is placed into 50.1 g water at 23.4°C in an insulated coffee cup. The heat capacity of
1. 0 answers
2. asked by Megan
3. 1,015 views
I need help on my research project I havn't writing a paper in like in the 21 years.If someone can give me their opinion about
1. 2 answers
2. asked by Awilda
3. 1,014 views
A horizontal rifle is fired at a bull's-eye. The muzzle speed of the bullet is 745 m/s. The barrel is pointed directly at the
1. 0 answers
2. asked by Katsu
3. 1,007 views
how do i answer these questiondonde esta la universidad? como es la universidad? cuando es la clase de espanol?
1. 2 answers
2. asked by kate
3. 990 views
Where should the comma go in the following sentence?Throughout the novel, Steinbeck has foreshadowed the novel's ending by
1. 2 answers
2. asked by HAPPY FACE :)
3. 987 views
the hamilton brush company issued 2,500 shares of the common stock worth $100,000.00 total.what is the par value of each share
1. 3 answers
2. asked by Anonymous
3. 983 views
find the lengths of the medians of the triangle with vertices at A(2,-2), B(-4,-4)and C(0,4)
1. 1 answer
2. asked by Ted
3. 981 views
You are watching an archery tournament when you start wondering how fast an arrow is shot from the bow. Remembering your
1. 1 answer
2. asked by sagi
3. 969 views
The honesty of children is refreshing.Now we have to write it to show possession.
1. 1 answer
2. asked by Kolten
3. 951 views
Find the least amount that could be deposited in a bank account today at 10% compounded quarterly to allow $650 withdrawals at
1. 1 answer
2. asked by Katie
3. 943 views
A 5.0×101 kg sample of water absorbs 312 kJ of heat.If the water was initially at 20.1C, what is its final temperature?
1. 1 answer
2. asked by inny
3. 938 views
I find from the first equation that x = 3y and plugging in to the second equation we geto.2y+37(-3y)=23 0.2y-111y=23 -110.8y=23
1. 2 answers
2. asked by unknown
3. 927 views
When doing a DNA extraction, what advantages does a TE buffer provide to DNA that water cannot?
1. 0 answers
2. asked by Natalie
3. 927 views
A motorboat is traveling 5m/s East, and encounters a current traveling 2.5m/s, North. If the witdth of the river is 80m wide,
1. 1 answer
2. asked by Jennifer
3. 927 views
assume that a jeweler needs 80 grams of an alloy that is 30% gold. He has avaliable one alloy that is 5% gold and another that
1. 1 answer
2. asked by chad
3. 924 views
A 1.25g sample of dry ice is added to a 750ml flask containing nitrogen gas at a temperature of 25.0 C and a pressure of
1. 0 answers
2. asked by Anonymous
3. 905 views
A 1100 N crate is being pushed across a level floor at a constant speed by a force of 500 N at an angle of 20.0° below the
1. 1 answer
2. asked by laven
3. 896 views
A force of 323 newtons makes an angle of 54 degrees and 20 minutes with a second force. The resultant of the two forces makes an
1. 0 answers
2. asked by Brittany
3. 888 views
How much heat is required to change 2.5kg of ice at 0.0 degrees C to water at 50 degrees C?
1. 1 answer
2. asked by Cat
3. 887 views
Solving by graphing DQ 1Solving by substitution Solving by elimination Which method do you think would be best to solve this
1. 1 answer
2. asked by Anonymous
3. 881 views
A stone is dropped from a 75 m high building. when this stone has dropped 15m, a second stone is thrown downward with an initial
1. 1 answer
2. asked by elaine
3. 879 views
USE THE LCD TO DETERMINE WHICH FRACTION IS GREATER.1/4,2/7
1. 1 answer
2. asked by Tray
3. 873 views
if the speed of light in air is3.0 by 10 to the 8 power per second calculate speed of light in a glass box
1. 1 answer
2. asked by stela
3. 861 views
One piece of copper jewelry at 101°C has exactly twice the mass of another piece, which is at 36.0°C. Both pieces are placed
1. 0 answers
2. asked by Brittany
3. 856 views
If you are in downtown Chicago and facing north, what direction would you go to get to Lake Michigan?
1. 2 answers
2. asked by Faith
3. 854 views

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