Thursday
May 28, 2015

Posts by frank


Total # Posts: 428

chemistry
Given the following information: Ni(OH)2(s) Ni2+(aq) + 2 OH (aq) Ksp=6.0 x 10 16 H2O(l) H+(aq) + OH (aq) Kw=1.0 x 10 14 What is the equilibrium constant for the reaction, Ni(OH)2(s) + 2 H+(aq) Ni2+(aq)+ 2 H2O(l)
April 20, 2012

Geometry
A sandpit in the shape of a rectangular prism has length 7 feet, width 5 feet, and height 1.75 feet. It is filled to the brim with sand. Joe puts this sand into a second sandpit having the same shape but a larger base. He needs 17.5 cubic feet of sand to fill the extra space ...
April 4, 2012

Math
I used 8 gallons of gas when I drove for 240 miles. How many gallons of gas are needed to drive 720 miles?
March 27, 2012

math
what is 800 as a percentage of 1400
March 16, 2012

Chemistry
Say, for example, that you had prepared a Buffer C, in which you mixed 8.203 g of sodium acetate, NaC2H3O2, with 100.0 mL of 1.0 M acetic acid. a. What would be the initial pH of Buffer C? HOW???????
March 15, 2012

Chemistry
Yeah i know it now it is the henderson Hasselbach equation
March 15, 2012

Chemistry
Say, for example, that you had prepared a Buffer C, in which you mixed 8.203 g of sodium acetate, NaC2H3O2, with 100.0 mL of 1.0 M acetic acid. a. What would be the initial pH of Buffer C? HOW???????
March 15, 2012

English
1. You can say "I just arrived home from being on holiday in France with my family. 2. My nephews did some Pirate games. 3. We flew back. (it is fine) 4. Its good as is. 5. On Christmas Eve I played some party games with my cousins and we proposed a toast to the New Year...
March 15, 2012

Chemistry PLEASE HELP!!!!!
Say, for example, that you had prepared a Buffer C, in which you mixed 8.203 g of sodium acetate, NaC2H3O2, with 100.0 mL of 1.0 M acetic acid. a. What would be the initial pH of Buffer C? HOW???????
March 15, 2012

math
set them equal to 180. like 3x+7x-40=180
March 15, 2012

math
Well you only gave me two angles is the other angle assumed to be 90 degrees?
March 15, 2012

Science
You are correct. Atoms that are not close together. The reason is because when the atoms are not close together, it is going to need more energy to collide into each other than the ones with the high concentration that makes molecules and atoms easier to start chemical ...
March 8, 2012

science
In the fissioning of uranium, a chain reaction is caused by? ejected neutrons. the enormous energy release. the kinetic energy of the decay products. the conversion of mass to energy.
March 5, 2012

science
Thanks
March 5, 2012

Chemistry
Dr Bob, Thanks for the help with the conversion. I was missing the solution on two fronts. One was the wavelength factor and the other was the MegaHertz. Do you know where I can find more information on "wavelength of the radiation" ? There is not a lot of specific ...
February 27, 2012

Chemistry
I'm having a difficult time with the Conversion Units in my equation. Attempting to answer this question: My cell phone has an antenna about 10.00cm long. If this is one quarter of the wavelength of the radiation, at what frequency in Megahertz does it operate? Note that ...
February 27, 2012

science
My cell phone has an antenna about 10.00cm long. If this is one quarter of the wavelength of the radiation, at what frequency in Megahertz does it operate? Note that cell phones, like radio, transmit sounds via electromagnetic waves which travel at the speed of light or 3x108m/s
February 27, 2012

math
Open boxes are being designed to hold mail for the post office. The boxes will be made to have the greatest possible volume. Each box will be made from a sheet of metal that measures 15 inches by 12 inches. They will be formed by cutting and removing a square from each corner...
February 14, 2012

general science
a train goes forward at a speed of 1 m/s for 20 seconds. then it stops and goes backward at a speed of 0.5 m/s for 4 seconds. after both movements are completed, how far is the train located from its starting point.
February 7, 2012

physics
A person desires to reach a point that is 1.70 km from her present location and in a direction that is 40.0° north of east. However, she must travel along streets that are oriented either north-south or east-west. What is the minimum distance she could travel to reach her ...
January 29, 2012

Chemistry
How many atoms of nitrogen are in a molecule of Al(No3)3
January 26, 2012

Astronomy 1010
You have two objects that are the same size, but one is significantly hotter than the other.How are the spectra of two objects different from one another? please detail help and answer..
January 17, 2012

Astronomy 1010
Do all wavelength of light make it through the atmosphere? Explain. please detail help and answer
January 17, 2012

Astronomy 1010
What are six regions of the electromagnetic spectrum? please detail and answer
January 17, 2012

Astronomy 1010
How is red light different blue light? ( Besides the obvious answer of ¡°their color¡±¡¦) please detail help and answer
January 17, 2012

Astronomy 1010
How is red light different blue light? ( Besides the obvious answer of ¡°their color¡±¡¦) please a detail help and answer
January 17, 2012

Astronomy 1010
Which of the following are related to one another, and which is independent of the others? (Amplitude, Frequency, Period, Wavelength). Please detail help and answer..
January 17, 2012

Astronomy 1010
The International Space Station orbits approximately 350 km above the Earth's surface. (The Earth's radius is 6,378 km.) Are the astronauts beyond the pull of Earth's gravity? Explain your reasoning.
January 17, 2012

Astronomy 1010
The International Space Station orbits approximately 350 km above the Earth's surface. (The Earth's radius is 6,378 km.) Are the astronauts beyond the pull of Earth's gravity? Explain your reasoning.
January 17, 2012

physics
the system is in static equilibrium. The coefficient of static friction between the block and the table's surface is = 1/3. The mass of the block that is hanging down is n1 Kg. The tangent of the angle shown in the figure is tan theta = n2. What is the minimum value of ...
January 14, 2012

physics
the three weights are hanging in static equilibrium. The two weights left and right of center have a mass of 100 Kg. The weight in the center has a mass of 100 Kg. Treat the strings as massless and the pulleys as frictionless. If the sin of the angle theta in the figure is sin...
January 12, 2012

physics
three forces act on a ring. The net force on the ring is zero. One force is at an angle of 30 degrees with a magnitude of n1 Newtons. A second force F acts at an angle theta . The tangent of the angle is tan theta = 3 / 1.73 . If the third force is n3 Newtons, what is n3? look...
January 12, 2012

physics
three forces act on a ring. The net force on the ring is zero. One force is at an angle of 30 degrees with a magnitude of n1 Newtons. A second force F acts at an angle theta . The tangent of the angle is tan theta = n2 / ã 3 . If the third force is n3 Newtons, ...
January 12, 2012

physics
three forces act on a ring. The net force on the ring is zero. One force is at an angle of 30 degrees with a magnitude of n1 Newtons. A second force F acts at an angle theta . The tangent of the angle is tan theta = n2 / ã 3 . If the third force is n3 Newtons, ...
January 12, 2012

physics
three forces act on a ring. The net force on the ring is zero. One force is at an angle of 30 degrees with a magnitude of 40 Newtons. A second force F acts at an angle theta . The tangent of the angle is tan theta = 3 / ã 3 . If the third force is n3 Newtons, what...
January 12, 2012

physics
Problem A5: In the figure above, the two blocks are on frictionless inclines and are in static equilibrium. The block on the left has a mass of 48 Kg, and the block on the right has a mass of n3 Kg. If the left incline has a length of n1 meters, and the right incline a length ...
January 10, 2012

Math
A rectangle has a measurement of 15 cm long and 9 cm wide. Label another rectangle that is similar and why are they similar?
December 7, 2011

10th grade World History
How did the ideas of Enlightenment led to changes in European Music and Literature during the 18th Century.
December 3, 2011

simplest form
4/8- 2/8
December 1, 2011

Math
To determine the question use Frogs F and G are 5cm to cube and 40cm to cube. a. Ratio What are ratio volumes and surface areas for a frog? (The formula for figuring out this data A correlation V square=2/3 Ratio Volumes: Surface areas: b. Toxin Let us say that Frog F absorbs...
November 29, 2011

Algebra
To determine the question use Frogs F and G are 5cm to cube and 40cm to cube. a. Ratio What are ratio volumes and surface areas for a frog? (The formula for figuring out this data A correlation V square=2/3 Ratio Volumes: Surface areas: b. Toxin Let us say that Frog F absorbs ...
November 28, 2011

Algebra
Using Proportionality How do figure out the average heights and weights for sheep and cows? Also. for Bald Eagles and Canada Geese. Dairy Cow 5 to 6 feet tall at the shoulder/weight 500lbs Bighorn Sheep Shoulder Height: 2.5 to 3.5" 280-300 weight Canada Goose length: M ...
November 28, 2011

Algebra
To determine the question use Frogs F and G are 5cm to cube and 40cm to cube. a. Ratio What are ratio volumes and surface areas for a frog? (The formula for figuring out this data A correlation V square=2/3 Ratio Volumes: Surface areas: b. Toxin Let us say that Frog F absorbs ...
November 27, 2011

Math
Using Proportionality A correlation L cube How do figure out the average heights and weights for sheep and cows? Also. for Bald Eagles and Canada Geese. Dairy Cow 5 to 6 feet tall at the shoulder/weight 500lbs Bighorn Sheep Shoulder Height: 2.5 to 3.5" 280-300 weight ...
November 27, 2011

Algebra
Using Proportionality How do figure out the average heights and weights for sheep and cows? Also. for Bald Eagles and Canada Geese. Dairy Cow 5 to 6 feet tall at the shoulder/weight 500lbs Bighorn Sheep Shoulder Height: 2.5 to 3.5" 280-300 weight Canada Goose length: M 25...
November 27, 2011

Algebra
The height of Big Foot is 10 times that of an ordinary ape. How many times is the weight of an ordinary ape? How many times is the surface area that of an ordinary ape? How many times is the pressure on the feet that of an ordinary ape? Ordinary ape 6 foot tall and weight 400 ...
November 27, 2011

Algebra
To determine the question use Frogs F and G are 5cm to cube and 40cm to cube. a. Ratio What are ratio volumes and surface areas for a frog? (The formula for figuring out this data A correlation V square=2/3 Ratio Volumes: Surface areas: b. Toxin Let us say that Frog F absorbs ...
November 27, 2011

Algebra
Using Proportionality How do figure out the average heights and weights for sheep and cows? Also. for Bald Eagles and Canada Geese. Dairy Cow 5 to 6 feet tall at the shoulder/weight 500lbs Bighorn Sheep Shoulder Height: 2.5 to 3.5" 280-300 weight Canada Goose length: M 25...
November 27, 2011

Math
The height of Big Foot is 10 times that of an ordinary ape. How many times is the weight of an ordinary ape? How many times is the surface area that of an ordinary ape? How many times is the pressure on the feet that of an ordinary ape? Ordinary ape 6 foot tall and weight 400
November 27, 2011

Algebra
Using Proportionality How do figure out the average heights and weights for sheep and cows? Also. for Bald Eagles and Canada Geese. Dairy Cow 5 to 6 feet tall at the shoulder/weight 500lbs Bighorn Sheep Shoulder Height: 2.5 to 3.5" 280-300 weight Canada Goose length: M 25...
November 27, 2011

Algebra
Use Proportionality To produce a 50-gallon pool it cost the manufacturer $35. How much a 100-gallon pool would cost.
November 27, 2011

Algebra
Using Proportionality symbol The height of Big Foot is 10 times that of an ordinary ape. How many times is the weight of an ordinary ape? How many times is the surface area that of an ordinary ape? How many times is the pressure on the feet that of an ordinary ape?
November 26, 2011

Algebra
proportionality A〖∝ L〗^3 A 20-foot sailboat estimated cost is $10,000. So what would the estimated cost be for a similar 40-foot boat?
November 26, 2011

Algebra
The question A granite cube is 10 times that of another granite cube. The pressure exerted by the larger cube on its base is how many times more the pressure exerted by the smaller cube on its base?
November 26, 2011

Algebra
The question A granite cube is 10 times that of another granite cube. The pressure exerted by the larger cube on its base is how many times more the pressure exerted by the smaller cube on its base?
November 26, 2011

Algebra
Proportionality If the side of a granite cube is 10 times that of another granite cube, the pressure exerted by the larger cube on its base is times the pressure exerted by the smaller cube on its base. P correlation L
November 26, 2011

Chemistry
How many grams of C4H10O can be melted by 2.0 x 103 J? Given ÄHfus = 7.27 kJ/mol
November 14, 2011

Math
Find the future amount after one year on $ 2,000 at 5% compounded annually. (a) $ 200 (b) $ 100 (c) $ 2,100 (d) $ 400 (e) $ 550.00
November 3, 2011

Science
It’s OK to say that your brain is solar powered, because A) mitochondria in plant cells convert solar power to the chemical power that is used to run your brain. B) cellular respiration is powered by sunlight. C) the antenna complex in chloroplasts acts like a tiny solar ...
October 26, 2011

Science
It’s OK to say that your brain is solar powered, because A) mitochondria in plant cells convert solar power to the chemical power that is used to run your brain. B) cellular respiration is powered by sunlight. C) the antenna complex in chloroplasts acts like a tiny solar ...
October 26, 2011

physics
a tugboat is pulling a ship backwards with the chandalier at a 2 degree angle. how fast is ship going?
September 29, 2011

Physics
F = (m)(a) F = (1.6 kg)(9.0 N/kg)= 15.58 N W = (F)(S) so, F= W/S 75 J / 15.68 N = 4.78 m
September 27, 2011

Physics
How high will a 1.60-{\rm kg} rock go if thrown straight up by someone who does 75.0 J of work on it? Neglect air resistance.
September 27, 2011

algebra
counterexample if x less than or equal 6, then 2x-3 less than 9
September 19, 2011

lab chemistry
what is the boiling point of 2-propanol at the top of pike's peak
September 19, 2011

physics
Ann is driving down a street at 59 km/h. Suddenly a child runs into the street. If it takes Ann 0.774 s to react and apply the brakes, how far will she have moved before she begins to slow down? Answer in units of m
August 28, 2011

managerial economics
a 56m b 76 c 90
July 11, 2011

Physics
(a ball is thrown straight upward with some unknow velocity. The ball reaches a maximum height above the launch point of 32m. how fast is the ball movin when it is 8 m above the launch point )
June 17, 2011

NU
a ball is thrown straight upward with some unknow velocity. The ball reaches a maximum height above the launch point of 32m. how fast is the ball movin when it is 8 m above the launch point
June 17, 2011

Math
If theres a golden rectangle, with one dimension shown as being 100, then what is the length of the unknown side? How do you do this please?
May 10, 2011

geometry
find the volume of a shape whose surface ares is 144 pi square inches
May 10, 2011

Math
Oh i did 1 times 2 times 3 times 4=24, then times the 1000 which is equal to 24000, then on the outside of thefraction it says add 1 so thats how i got 24,001. I dont know what the ...means thats how the problem was written. How does that make it prime though if you don't ...
May 10, 2011

busieness
questions 2) List the facts that have the most bearing on the decision. 4)Explain what each affected person would want you to do about the issue. 5)List three alternative actions and identify the best and worst case scenario for each alternative, anyone who would be harmed by ...
May 8, 2011

gen/105
what website can i use to find this?
May 2, 2011

gen/105
• Conduct online research regarding the strongest of your multiple intelligences. Find three Web sites that accurately describe that intelligence. If you identified more than one intelligence, choose one. • Compile the following information: o Links to the three Web ...
May 2, 2011

physics
a mass of density bottle is 20g,when empty,70g when full of water and 55g when full of a second liquid.calculate the density of the liquid
April 14, 2011

Math
sarah and isabel each has an equal amount of money. After sarah spent 18 and isabel spent 25, Sarah had twice as much as Isabel. How much did each of them have first.
March 21, 2011

com 170
I believe this paragraph below is a Analysis I have to pick between summary,analysis, synthesis, and evaluation can you tell me if i am right and if not which one and why? 1. Alice Doe’s article discussed overlooked tax deductions. It talked about some of the most ...
March 6, 2011

Social Studies-URGENT
no
March 4, 2011

calculus
Please help with this. I submitted it below and was asked to clarify by Henry (hope this is clearer and thank you). I need the first derivative of f(x)=4(x+ sqrt (x(8-x)).And then the second derivative of this to show by the second derivative test that it is a local maximum. ...
March 4, 2011

reading
what are some examples of everyday kid ritual?
March 1, 2011

Math
i think its 10/7
March 1, 2011

calculus
Please help with this. I submitted it below but no one responded. I need the first derivative of f(x)=4(x+ then the square root to include (x(8-x)), then close bracket.And then the second derivative of this to show by the second derivative test that it is a local maximum. This...
March 1, 2011

calculus
Please help with this. I need the first derivative of f(x)=4(x+squareroot (x(8-x)) and then the second derivative of this to show by the second derivative test that it is a local maximum. This is difficult to put into form here and I hope I have got it right. Many thanks.
February 24, 2011

algebra
Find value of x: x(x+2)=7
February 9, 2011

Chemistry
Enough SO3 is added to an evacuated container so its initial pressure is 4.00 atm. Calculate the mole fraction of O2 in the equilibrium mixture if the total pressure at equilibrium is 5.00 atm.
January 30, 2011

Chemistry
Enough SO3 is added to an evacuated container so its initial pressure is 4.00 atm. Calculate the mole fraction of O2 in the equilibrium mixture if the total pressure at equilibrium is 5.00 atm.
January 28, 2011

Chem
Enough SO3 is added to an evacuated container so its initial pressure is 4.00 atm. Calculate the mole fraction of O2 in the equilibrium mixture if the total pressure at equilibrium is 5.00 atm.
January 26, 2011

Math 1 9th grade
how do you find the characteristics of a graph
January 20, 2011

biology
rana pipiens, a species of frog, has a diploid chromosome number of 26. a. how many chromosomes are present during metaphase i? per cell? b. how many chromatids are present during anaphase i ? per cell? c. how many centromeres are present during telophase I? per cell? d. how ...
January 15, 2011

Calculus
if u and v are differentiable functions, then does d(uv) = dudv
December 14, 2010

MATH HELP NEEDED
combine 2nd and third
November 18, 2010

MATH HELP NEEDED
yfrog./ 9escreenshot25ucj img338.imageshack.us /img338/7823/screenshot25uc.jpg
November 18, 2010

Algebra
when i combine the like terms i dont know what the next step is
November 17, 2010

Algebra
At what two points do the graphs of y=2x^2-5x-12 and y=1/2x^2-3x+4 intersect? explain your reasoning.
November 17, 2010

Math
b) temperature of the surrounding environment
November 16, 2010

Math
Using Netwon Law of Cool, the graph of T(t)=S+(T subscript --S)e^kt approaches a horizontal asymptote.What does the asymtote describe? a) intial temperature of the heated object b) temperature of the surrounding environment c) the difference in the temparture of the heated ...
November 16, 2010

Pharmacy Tech
An IV infusion order is written for 0.3 L of D5W/0.45% NS to run over 12 hours. The drp factor on th IV is set to 12 gtt/mL. What is the flow rate in drops per minute? Hint make sure your equation includes conversion factors for volume and timeso that the answer is in gtt/min....
November 3, 2010

english
aesthetics?
November 1, 2010

english
This teen romance doesn't have a single authentic moment, from its canned tragedy setup . . . to its power-ballad finale . . ." wich one would it be? authenticity? universality? aesthetics?
November 1, 2010

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