Heating an ore of antimony (Sb2S3) in the presence of iron gives the element antimony and iron(II) sulfide. Sb2S3(s) + 3 Fe(s) 2 Sb(s) + 3 FeS(s) When 10.9 g Sb2S3 reacts with an excess of Fe, 9.84 g Sb is produced. What is the percent yield of this reaction? could you please ...
March 31, 2010
The path of a rocket fired during a fireworks display is given by the equation s(t)=64t2-16t2,( t do the 2nd power) where t is the time in seconds and s in the height in feet. What is the maximum height in feet the rocket will reach? In how many seconds will the rocket hit the...
January 29, 2010
The path of a rocket fired during a fireworks display is given by the equation s(t)=64t2,( t do the 2nd power) where t is the time in seconds and s in the height in feet. What is the maximum height in feet the rocket will reach? In how many seconds will the rocket hit the ...
January 29, 2010
Are these correct Neither Jake nor Sue gets seasick. Are Jake and they ready with their math project? Every one of the students I spoke to said he/she liked his/her math class. If a person loses his/her jacket, he/she can check the lost and found. Each of the boys likes to go ...
December 20, 2009
sentence corrections Every one of the students I spoke to said they liked their math class. If a person loses their jacket, they can check the lost and found. Each of the boys likes to go out for ice cream after they win a game. My mom gave my sister and I money to spend at ...
December 20, 2009
One end of a light spring with force constant 300 N/m is attached to a vertical wall. A light string is tied to the other end of the horizontal spring. The string changes from horizontal to vertical as it passes over a solid pulley of diameter 6.00 cm. The pulley is free to ...
November 30, 2009
functions f(x)=rad. x-9 write the intervals of the functions. How do I put the set of numbers in the form of intervals such as infinity. I solved it and got the answer as this: x < or = 9 (infinity,9] Please help me, I am stuck.
September 9, 2009
Does anyone know what kind of education a Medieval Princess received? I know they didn't get as much as boys and learned more about the arts, manners, and such...but I need like a source where I can read about it more. Could anybody give a website that could help?? Thanks...
May 6, 2009
When dilute nitric acid was added to a solution of one of the following chemicals, a gas was evolved. This gas turned a drop of limewater, Ca(OH)2, cloudy, due to the formation of a white precipitate. The chemical was.... a. the household ammonia NH3 b. baking soda NaHCO3 c. ...
April 12, 2009
Please help with this problem! Planet Pemdas is a perfect sphere that does not rotate. If a rocket flies in a path following the circumference of Pemdas, and maintains a constant altitude of 25,000 feet above the surface for one orbit, how many more feet than the planet's ...
April 7, 2009
Please help with this problem! Brandon wishes to fence in a rectangular area of his lawn for his rabbit. If the measure, in feet, of each side of the enclosure is a positive integer and the perimeter of the enclosure is 70 feet, what is positive difference between the area of ...
April 7, 2009
Please help with this problem!! Assume a, b and c are positive integers such that c cubed=a squared-b squared. If c is the least odd integer for which this is true, what is the least possible value of b?
April 7, 2009
Research Project on Computer Confidentiality
I am relieved to know that more people are having this problem. I can't find any info either. I too have been working on it for weeks. I am two tests ahead but can't turn it in because of this paper that is impossible. Goodluck to you all.
November 12, 2008
As the supply of teachers diminishes, the demand on new and existing teachers increases. As a potential teacher and educator, identify two perceived challenges of the teaching profession that you may struggle with most. In contrast, identify two opportunities you may have as a...
July 7, 2008
I just took this class and got an A- in it I would be glad to help you out. Which article did you choose? "How telephones work" What type of introduction does the writer use? "Include Interesting facts about the subject." What is the impact of that kind of ...
July 6, 2008
stereotyping can affect grop relations in a negative manner because the thought of being labelled as some particular group sets in which spoils the relations of groups with each other.thius is when a grop is stereotyped as being inferior or less than another group.
April 3, 2008
Bess filled a syringe with water and left it by the sink in the sunshine. Ten minutes later she saw a puddle of water under the syring tip so she thought it was broken, but it wasnt. What do you think caused the little puddle of water to appear under the syringe tip?
February 4, 2008
Jake has a 3 foot long peice of wood that he wants to make into a triangular frame. He cuts a peice off of the board that is 1 foot 5 inches long. From the remaining board he cuts off another peice that is 7 inches long. He now has 3 peices of wood. Will he be able to fit 3 ...
January 18, 2008
contemporary buisness communications
for what audience or readership do you think the article "blogs will change your business" was written? what is the purpose of the article (to entertain, inform, persuade, or a combination)? explain answer how do the writers organize information in the article? what ...
November 13, 2007
Does anyone have the superior knowledge as to where I could find an easy read translation of Romeo and Juliet for no price at all on the Internet?? Thank you for your valuable time and wonderful guiness. you could just read spark notes summaries Thank you for using the Jiskha ...
February 22, 2007
A SALT IS OBTAINED AS A REACTION BETWEEN A SALT (and water) IS OBTAINED AS A REACTION BETWEEN a base and an acid. See: http://hyperphysics.phy-astr.gsu.edu/hbase/chemical/acidbase.html http://lrs.ed.uiuc.edu/students/erlinger/water/background/ph.html I hope this helps. Thanks ...
September 30, 2006