Wednesday
October 22, 2014

Posts by dave


Total # Posts: 614

Chemistry
How might one separate a mixture of water and salt? A solution of water and salt may be separated, if you don't want the water, by allowing the water to evaporate which will leave the salt crystals behind. If you want the water AND the salt, you may separate them by ...
September 9, 2006

History help!!!!!!!!
Why did the colonists react to the Coercive Acts with boycotts and convening the First Continental COngresss? in 1764, the British Parliament passed the Sugar Act. Many of the colonists were unwilling to pay tax which was imposed - this is what started everything. This was the...
September 3, 2006

microeconomics
Ok, if anyone is able to help me within the next 12 hours or so, that would be wonderful! I think I am going about this problem correctly -- I am not looking for someone to solve this problem for me, but for someone to tell me if I am doing it right... You can see this chapter...
August 31, 2006

Chemistry HELP!!
Can you identify a metal if you know its density? Explain Do you think that determining the volumes of metal samples by measuring their dimensions and calculating would be more r less accurate than determining volumes by water displacement? Explain. Would measuring the ...
August 29, 2006

Economics
#2 is A
August 15, 2006

1 question+chem!
#11) The information: An unidentified acid with a concentration of 1.0 mol/L has been given to you to identify. The acid appears in your data booklet on the Relative Strengths of Acids and Bases table. The following test results were recorded: 1. Methyl violet is yellow when ...
August 4, 2006

Chem.
10. Suggest how two very different variables could be manipulated to increase the percent yield of sulphur trioxide. The equation for the reaction follows. 2 SO2(g) + O2(g)>>> 2 SO3(g) + energy Ok, I really dont know this one. Can you please help? Thanks! You need to...
July 24, 2006

sociology
LOL wow Go AXIA!!! Funny but sad at the same time lol
July 20, 2006

"le Chat. Principle" #2
Hi, there are 5 questions and I was wondering if you could check them for me. Thanks! 3. The hypothetical equilibrium reaction represented by the equation that follows. QA(s) + 2 X(g)>>>Q(l) + X2A(g) + energy This reaction can be shifted to increase the yield of ...
July 19, 2006

"le Chat. principle".
Hey, can you check this, this is regarding "le Chat. principle". Thanks! #1) The value of the equilibrium constant for the reaction H2CO3(aq) + energy >>> H2O(l) + CO2(g) can be changed by introducing a change to which component of the equation? My answer: ...
July 19, 2006

History
Has anyone read the book A People's History of the UNited States? if so, can you help me with a question about the first chapter? How does Zinn's story of first contact differ from your own prior knowledge of the story? I haven't read this text, but the reviews ...
July 18, 2006

Chemistry
Hey, can you help me on this question: Question: A 2.3 kg iron object is placed in an oxygenated tank of 1.00 mol/L hydrochloric acid. What volume of hydrochloric acid would react to completely consume the iron object? My question: when I seperate the H and Cl, and make the ...
July 17, 2006

chem. check
Can u please check these questions..thanks! Redox Stoichiometry 1.A 2.45g zinc metal strip is placed into an 2.3 x 10-1 mol/L solution of tin (II) bromide. If all the zinc and tin (II) bromide react, what was the volume of the solution. My answer: 8.62L is the volume of the ...
July 12, 2006

help me asap
hi I'm taking sat II lliterature test and i was wondering if you can give me a site where i can take a practice test online for free. Check these sites. http://www.collegeboard.com/student/testing/sat/lc_two/lit/format.html?lit http://testprep.sparknotes.com/testcenter/ap/...
June 24, 2006

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