Thursday
August 28, 2014

Posts by ken


Total # Posts: 615

chemistry clearly step by step
Al2(s04)3 solution of 1 molal concentration is present in 1 litre solution of 2.684g/cc.How many moles of bas04 would be precipitation on adding bacl2 in excess? The answer 6M I do not understand pls explain step by step Thank a lot all tutors
July 20, 2014

chemistry step by step clearly
10L of hard water required 5.6g of lime for removing hardness. hence temporary hardness in ppm of cac03. The answer 1000ppm I really want all tutors to solve it form clearly step by step. Thank a lot
July 20, 2014

chemistry step by step for me. Thank a lot
342gm of 20% by mass of ba(oh)2 solution sq gr .57 is reacted with 1200ml of 2m hn03. if the find density is same as pure water then molarity of the ion in resulting solution by nature of the above solution is dentified. The answer 0.888M Who helps me to solve it step step ...
July 19, 2014

Chemistry step by step thank a lot
10L of hard water required 5.6g of lime for removing hardness. Hence temporary hardness in ppm of cac03 The answer 1000 Who helps me to solve it for me step by step clearly Thank a lot all tutors
July 13, 2014

chemistry step bystep thank a lot
10L of hard water required 5.6g of line for removing hardness. Hence temporary hardness in ppm of cac03. The answer 1000 ppm= 1mg/1L cac03 = 100 g/mol who solve it for me clearly step by step Thank a lot all tutors
July 12, 2014

chemistry step by step for me clearly
Al2(s04)3 solution of a molal concentration is present in 1 litre solution of 2.684g/cc. How many moles of bas04 would be precipitated on adding bacl2 in excess. The answer 6M I want some tutors to explain for me step by step clearly. I do not still understand Thank a lot all ...
July 12, 2014

chemistry step by step thank a lot
Al2(s04)3 solution of a molal concentration is present in 1 litre solution of 2.684g/cc. How many moles of bas04 would be precipitated on adding bacl2 in excess? the answer 6M Who helps me step by step for me clearly I am thankful to all tutors
July 11, 2014

chemistry step by step for thank a lot
10L of hard water required 5.6g of lime for removing hardness. Hence temporary hardness in ppm of caco3. The answer 1000 who helps me to solve it for me step by step thank a lot
July 6, 2014

chemistry step by step for me thank a lot
What is the weight of ca(oh)2 required for 10 litre of water remove temporary hardness of 100 ppm due to ca(H03)2 The answer 0.74 Thank all tutors for your help Pls show step by step for me
July 6, 2014

chemistry step by step thank a lot
342gm of 20% by mass of ba (OH)2 solution sq gr 0.57 is reacted with 1200ml of 2M hn03. If the final density is same as pure water then molarity of the ion in resulting solution by nature of the above solution is dentified 0.888m Who solve it for me step by step thank a lot
July 6, 2014

chemistry step for step thank a lot
10L of hard water required 5.6g of lime for removing hardness. Hence temporary hardness in ppm of cac03. The answer 1000 I think ppm= 1mg/1L 10L x 100g/mol cac03 = 1000 Who check it for me step by step Thank all tutors for your help. How many ml of a 0.05M kmno4 solution are ...
July 5, 2014

Chemistry step by step thank a lot
10L of hard water required 5.6g of line for removing hardness. hence temporary hardness in ppm of cac03. The answer is 1000 Pls solve it for me step by step Thank a lot all tutors for your help.
July 5, 2014

chemistry Step for step for me thank a lot
A sample of peanut oil weighing 2g is added to 25ml of 0.4M koh. After saponification is complete, 8.5ml of 0.28M hes04 is needed to neutralize excess of koh. The saponification number of peanut oil I do not still understand Pls clearly step by step for me. Thank a lot The ...
July 4, 2014

Chemistry Step by step for me Thank a lot
A sample of peanut oil weighing 2g is added to 25ml of 0.4M koh. After saponification is complete, 8.5ml of 0.28M hes04 is needed to neutralize excess of koh. Saponification number of peanut oil Thank for all tutors for your help. Pls solve it for me step by step for me. The ...
July 4, 2014

chemistry step by step for me Bob
A sample of peanut oil weighing 2g is added to 25ml of 0.4M koh. After saponification is complete, 8.5ml of 0.28M hes04 is needed to neutralize excess of koh. The saponification number of peanut oil. The right answer 146.75 Bob solve it for me step by step
July 4, 2014

chemistry Ben step by step for me
10L of hard water required 5.6g of lime for removing hardness. Hence temporary hardness in ppm of cac03 The answer 1000 I do not get answer 1000 ppm= 1mg/1L Ben solve it for me step by step for me
July 4, 2014

chemistry please step by step for me
what volume of hcl solution of density 1.2g/cm3 and containing 36.5% by weight hcl, must be allowed to react with zinc in order to liberate 4g of hydrogen I know this calculate this part, but I do not get the answer 333.3ml 1.2g/ml x 1000 x 0.365/36.5 = 12M or other ...
July 4, 2014

chemistry
What volume of hcl solution of density 1.2g/cm3 and containing 36.5% by weight hcl, must be allowed to react with zinc in order to liberate 4g of hydrogen The answer 333.3ml Who helps me step by step for me
July 4, 2014

chemistry
one litre of a sample hard water contain 4.44mg cacl2 and 1.9mg of mgcl2. What is the total hardness in terms ppm of cac03?
June 29, 2014

chemistry Who clearly step by step
What per cent of free s03 can be obtained from 100g oleum, that is labeled with 113.5% h2s04? To 100 ml of 5M naoh solution density 1.2g/ml were added 200ml of another naoh solution with have a density 1.5g/ml and contains 20 mass percent of naoh. What is the concentration of ...
June 29, 2014

chemistry who step by step for me
1.2g mixture of na2c03 and k2c03 was dissolved in water to form 100cm3 of solution, 20 cm3 of this solution required 40cm3 of 0.1 hcl for neutralization. Calculate the weight na2c03 and k2c03 in the mixture? My calculation 20cm3/100cm3 = 0.2 x/53 + (0.2g-X) + y/69 = 0.004 0....
June 22, 2014

pharmacy math who helps me step by step for me
How much 30% alcohol, 45% alcohol, 60% alcohol and 95% alcohol could be mixed to make 200ml of alcohol? the right answer 30% is 112.5ml 45% is 25ml 60% is 12.5ml 95% is 50ml Who helps me step by step clearly Please some professional tutor solve it
June 22, 2014

chemistry step by step for me
0.6g mixture of licl and bal was treated with 40ml of 0.2N agn03 and the excess ag on titration required 25ml of 0.1N kcns for the end point using ferric alum as the indicator. What is the percentage of iodine in the mixture Who helps me step by step for me clearly
June 22, 2014

Chemistry pls clearly step step for me
2gm of mixture hydrated sodium carbonate and sodium bicarbonate was dissolved in water and made up to 250cc. 25cc of this solution was titrated using methyl orange as indicator and 22.5cc of 0.087N hcl were required for naturalization. calculate the percentage of sodium ...
June 21, 2014

chemistry Please who helps me stpe by step
2gm of mixture hydrated sodium carbonate na2c03 /OH20 and sodium bicarbonate was dissolved in water and made up to 250cc. 25cc of this solution was titrated, using methyl orange as indicator and 22.5cc of 0.087N hcl were required for neutralization. Calculate the percentage of...
June 21, 2014

Chemistry Who step by step
A 0.8870g sample of a mixture of nacl and nan03 is dissolved in water, and the solution is then treated with an excess of AGN03 to yield 1.913g of agcl. Calculate the percent by mass of the nacl in the mixture. 1.913g / 143 = 0.0133 x/58 ( 0.8870g -x) y/85 = 0.0133 0.01529 - 0...
May 11, 2014

physics
a particle of mass m moving with a speed v meters per second strikes a particle of mass 3m at rest and joins together. express the final kinetic energy as a fraction of initial energy
May 5, 2014

physics
when a force of 0.245 newtons is applied to a body of mass 250g which is resting on a horizontal plane, the body is found to be in a limiting equilibrium. find the coefficient of friction between body and planes.
May 5, 2014

physics
a body of mass 5kg falls vertically against a resistance of x Newtons.The body passes through two points A and B, 2.5 METERS APART with A above B, WHEN TRAVELING WITH SPEED 2 METERS PER SECOND AND 6 METERS PER SECOND RESPECTIVELY. BY ENERGY CONSIDERATION , FIND THE VALUE OF X.
May 5, 2014

physics
in every minute a pump draws 6 metric cubed of water from a well and issues it at a speed of 5 meters per second from the nozzle situated 4 meters above the level from which the water was drawn. find the average rate at which the pump is working. (1 metric cubed =1000kg)
May 5, 2014

physics
a hot air ballon rises from the ground with a uniform acceleration. after 10 seconds the ballon has attained a height of 25 metres. if the total mass of ballon and its bucket is 250 kg, find the magnitude of the force f
May 5, 2014

algebra
given that sin (2x+30)=cos(x-15).determine the value of x given x is an acute angle
April 25, 2014

French
travaille dans un magasin. ( rewrite the article and the noun) The salesclerk
April 20, 2014

physics
Don't you need either angle of the string or mass of plane or velocity to answer this question?
February 21, 2014

physics
If a toy plane is spinning on a string 1.87 meters off the ground and the string is .5m long how long does it take to make 10 revolutions?
February 21, 2014

physics
Calculate the pressure exerted on the floor by the heel if it has an area of 1.45 cm2 and the woman's mass is 58.0 kg. Express the force in N/m2 and lb/in
February 3, 2014

Maths
Wendy has 80 more stamps than Mary but 50 more stamps than Jean. Wendy gives 1/2 of her stamps to Mary. Then Mary gives 1/5 of her stamps to Jean. If Jean has 62 more stamps than Wendy, how many stamps does Mary have in the end?
December 30, 2013

MATHS
Judy is given some money to buy files. If she buys 5 files, she will have $4 left. If she buys 9 files, she will need another $5. How much money does she have?
December 30, 2013

physics
A firework rocket is launched vertically from rest and loses 60% of its mass during a burn time of 4 seconds. What is the final speed of the rocket relative to the ground (in m/s) when the gas relative to the rocket has a speed v= 80 m/s? a. 15 m/s; b. 34 m/s; c. 68 m/s; d. ...
December 29, 2013

solar energy please help
c)Because the voltage difference created in the photoelectrode is not able to produce enough voltage to drive the reaction c 1.43V
November 6, 2013

Solar Energy Please Help
1a. = A 1.b = 10.4mA/cm2, 8.33% 1c = B 1d = 18mA/cm2, 14% 1f = C 1g = 18.7 mA/cm2, 15%
October 26, 2013

Solar Energy Please Help
Link doesn't works
October 26, 2013

Solar Energy Please Help
Why don't you add the missing figures 2a, 2b, and 2c
October 26, 2013

Solar Energy Please Help
It is not possible to solve the rest of the answers the figure are missing.
October 26, 2013

Solar Energy Please Help
Add the missing figures please
October 26, 2013

Algebra
the area of a triangle can be determined by using the formula A= 1/2bh, where b is the length of the base, and h is the length of the height. Determine the area of a triangle with a base which is 7x to the 2nd power and a height which is 8x feet.
August 26, 2013

Algebra
tree has 30 meters tall makes a shadow that is 25 meters long. at the same time Kate's shadow is 1.5 meters long how tall is Kate
August 16, 2013

Calculus
Mathematica Project - Position, Velocity, and Acceleration? A rocket is fired vertically upward into the air from a launching platform 100 ft above the ground. The platform is then retracted, and the rocket is allowed to fall to the ground. The height (in ft) of the rocket ...
July 19, 2013

calculus
what i wrote is second derivative. i just need to set it to zero and solve, but that is where i am stuck
June 11, 2013

calculus
solve for the second derivative and set to zero f"(x) = ((x^2-4)*sin(2x)- [(2x)(1+cos^2(x))]/ ((1+cos^2(x))^2) i dont know how to set it to zero and solve i get this: (x^2-4)(sin(2x))= (2x)(1+cos^2(x)) thanks for help i did not get a clear response earlier so i am ...
June 11, 2013

calculus
solve for the second derivative and set to zero f"(x) = ((x^2-4)*sin(2x)- [(2x)(1+cos^2(x))]/ ((1+cos^2(x))^2) i dont know how to set it to zero and solve i get this: (x^2-4)(sin(2x))= (2x)(1+cos^2(x)) thanks for help
June 10, 2013

health information
Your question is probably only properly answerable by people currently working in the field. I refer, of course to the C.D.C. (Center for Disease Control). Here is their contact info. # Centers for Disease Control and Prevention 1600 Clifton Rd Atlanta, GA 30333 # 800-CDC-INFO...
May 6, 2013

Socials
Tess, we try to help but we don't know our question askers personally so it can sometimes be frustrating. As to the question at hand I suggest calling the Auto Club (AAA) and ask to speak to a travel agent there.800-814-7471 You may get handed around the telephone tree for...
May 6, 2013

life orintation
Google: 1.Lead in drinking water, click on the W.H.O. report, go down to pages 5-10 where the effects on humans are discussed. 2.Cyanide pollution in gold mining, the top article. 3. Tritium water pollution, many of the articles are very good. 4. Plutonium nanoparticle water ...
May 6, 2013

WorldHistory
Please do more than copy and paste answers. as Ms. Sue points out, without siting your sources you are stealing the work of others (plagiarizing). While answering questions about well researched history will be mostly referencing the work of past research and reports from the ...
May 6, 2013

Justice system
Correct. :)
May 6, 2013

life orientation
Google these subjects 1. Asthma and volcanic ash 2. Pyroclastic flows dangerous 3. Fighting malaria one net at a time
May 6, 2013

Life orientation
Horribly, there are big institutions that do support drug abuse. Here are two examples. 1) Sen. Elizabeth Warren on Thursday demanded answers from top banking regulators over the possibility of shuttering financial firms that flout federal anti-money laundering laws or violate...
May 6, 2013

life orientation
Human factors: Population density in cities, and disease transmission. Open sewers in slums. Destruction of Australia's Megafauna, and wildfires. Mining of Uranium and the health of nearby residents. Mountiantop removal, and its environmental impacts.
May 6, 2013

life orientation
Here are 5 things to enter into Google, read some of the articles you find. 1. Fraking pollutes water table 2. Acid rain 3. Fukushima radiation in the air 4. Fukushima radiation in the water 5. Light pollution alters animal behavior
May 6, 2013

Life orientation
Enter these into Google, 1. The plight of the polar bear 2. Deforestation in the Amazon 3. Arctic Wildlife Refuge oil 4. Acidification of the ocean 5. Ozone layer hole Tasmania
May 6, 2013

History
They did not act alone. they were encouraged by many wealthy financiers. Fritz Thyssen (a member of I.G. Farbin Industries A.G.)was one of Hitlers first backers. Media supported him, He was Time magazine's Man of the year, TWICE! (before the war). Emperor Hirohito Came ...
May 6, 2013

embryology
...Actually I strongly recommend that you go to the nearest college, go to its bookstore, and find the used textbook area. Many times you will find great books for under 5 dollars.
May 6, 2013

embryology
I recommend: Biology: By Miller and Levine, it is well written, easy to understand, and used copies are quite inexpensive on Amazon.
May 6, 2013

l.o
Enter these into Google. 1. PDF] Aquatic Ecosystem Stressors in the Sacramento–San Joaquin Delta 2. Where have all the Salmon gone? 3. Sea Shepard 4. The extinction crisis 5. Food chain destruction
May 6, 2013

life orientation
What is "The pollution?" does your text specify the subject or will any pollutant suffice?
May 6, 2013

life orientation
Google: Environmental health hazards within Mamelodi. Many good reports and articles, and job offers too, which can give good descriptions of conditions that need addressing.
May 6, 2013

Life Orientation
Google: Environmental health hazards in South Africa, there are many good articles there. As to hazards of natural origin, I would posit: Swimming with great white sharks, being at the oceanside in Capetown during extreme weather, Living at the shore of Lake Nyos (The ...
May 6, 2013

Ngono
Google: Gary Null alcoholism, click the third one down, read the article.
May 6, 2013

ROCKET SCIENCE
This it an I D ten T problem, in your mind. Please seek professional help, or get a clue.
April 24, 2013

General
Watson I have not been on in weeks but let me edit your question... Why aren't you guys answering my questions? I posted 8 questions yesterday, and not a single one has been answered yet. Now on to why questions don't get answered, most of the time it is because people...
April 24, 2013

Grammer root
Sharp stick, dipped in mud, on a wall. Steel reinforced rubber box with wheels on one side. It's not easy, but I look cool doing it.
April 24, 2013

landmark project
Who commissioned it? How did it pay for the art it now houses? how is that art protected from the moisture in the air? Is flash photography allowed inside it?
April 23, 2013

Science
Mabey, if the colony was in a station orbiting Neptune, it might be referred to as "The Neptune Colony". Actually being on the surface, under the atmosphere, floating on whatever is down there? That would be very hard. Ms. Sue's link should show you just how hard...
April 23, 2013

DYNAMICS OF CATERING
Acceptable table manners vary wildly between cultures. Burping is a compliment to the chef in Japan but rude in most other places, slurping your soup is good in some but rude elsewhere, etc.
April 23, 2013

DYNAMICS OF CATERING
Eating Flan with chopsticks.
April 23, 2013

Science-Greenhouse Effect
There are proponents of nuclear generated electricity that claim that the problem of greenhouse gases is lessened by using nuclear power generation. They never mention the tremendous amount of carbon added to the atmosphere during all other phases of their operation, Building ...
April 23, 2013

Equilibrium
A lever 9.000 m in length has the fulcrum placed at one end. A load of 26.000 kN is applied to a point 2.200 m from the fulcrum. What force must be applied to the end of the lever to place the system in equilibrium?
April 11, 2013

Equilibrium
A beam having a length of 20 metres is pivoted at its mid point. A 200 newton load is located at a point 5 m from the right hand end of the beam. A 300 newton load is located at a point 8 m from the right hand end. In order for the beam to be in equilibrium, what load is ...
April 11, 2013

Physics
A baseball is thrown horizontally off a cliff with a speed of 7.3 ms-1. What is the vertical distance, to the nearest tenth of a meter, that the ball has fallen after 9.4 seconds?
April 10, 2013

algebra
How to multiple 250 x .25
April 10, 2013

Physics!!!Please Help!
-Steam at 100 ¡ãC is mixed with 166.4 g of ice at ¨C32.8 ¡ãC, in a thermally insulated container, to produce water at 44.6 ¡ãC. Ignore any heat absorption by the container. -Cwater = 4186. J/(kg ¡ãC) -Cice = 2090. J/(kg &...
April 10, 2013

chemistry
How can I identify the ions present in (NH4)2SO4.FeSO4.6H2O qualitatively?
April 7, 2013

life orintetion
1. Not providing critical information. 2. Not providing your answers.
March 19, 2013

Art
Great name, by the way :) Please put an asterisk by the answers you think are correct. Reposting it as a new question, with your answers, will work better than continuing it here. Question 15 made me laugh, the test writer has a great sense of humor/irony.
March 19, 2013

LIFE ORIENTATION
Natural hazards: volcanoes cause many deadly conditions, rivers flood, oceans surge, weather(too hot/cold), hail can kill/injure, wind can blow you into/off of things, lightning (direct hit/fire)... Human causes: one of the worst, Bophal, India, thousands were killed, many ...
March 19, 2013

huy
Uniqueness
March 19, 2013

Newsworthy advice
:)
March 18, 2013

Newsworthy advice~ not~
It would ~not~ be plagiarism if you cite your source. Aside from editing the awesome Ms. Sue, You might make a chart which tracks the accuracy of the initial projected effect charts of the policies, compared to their real life results.
March 18, 2013

POLITCAL SCIENCE
It would seem that the missing part of your question is the _______ at the beginning of the question. Here are a few choices; random guesses spiritual mediums think tanks polls political pundits magic 8 balls :)
March 18, 2013

POLITCAL SCIENCE
are frequently sponsored by news organizations, who use them to help predict outcomes of presidential or other national races.
March 18, 2013

SOCIAL STUDIES
an example of a part-whole effect question order effect is in the case which issue?
March 18, 2013

ENGLISH, HELP?
Acidification of the oceans Reduced oxygen levels in the atmosphere Sharia law in Europe Extra judicial killings by the U.S. government Tar sand mining Fraking
March 18, 2013

Combinations Maths
:) Thanks
March 18, 2013

Combinations Maths
If you are going to answer other peoples questions you need to show them your work, just posting the final answer is no help. We try to show them how to get to the answer, and if we can we don't give the final answer, they learn better if they get to it themselves.
March 18, 2013

Life orientation
See related questions below, 3rd one down.
March 18, 2013

political science
:P paragraphs
March 18, 2013

political science
I entered your question into Google and clicked on the top link.... I suggest you do the same, here are the first two paragerphs. Searching for Adequacy & Reasonableness A search for responsive discovery is reviewed on whether the proffering party has “demonstrated that ...
March 18, 2013

Physics
Monochromatic x-rays (λ = 0.166 nm) from a nickel target are incident on a potassium chloride (KCl) crystal surface. The spacing between planes of atoms in KCl is 0.314 nm. At what angle (relative to the surface) should the beam be directed for a second-order maximum to ...
March 17, 2013

Physics - Ken meets Ken
Hi Ken, I'm Ken, When I looked into "My" history of answers I was surprised to find really great questions there, which I had not posted. If either one of us changes our name that thread will be lost to the changed one. I will happily share this thread with you, ...
March 17, 2013

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