Posts by Leo
Total # Posts: 527
Isopropyl alcohol, C3H8O, is used in rubbing alcohol mixture. Alcohol on the skin cools by evaporation. How much heat(in kJ) is absorbred by the alcohol of 2.25g EVAPORATED? THE HEAT VAPORIZATION OF Isopropyl alcohol is 42.1 kJ/MOL Compute the number of moles of C3H8O that ...
June 11, 2007
if you're in the mood for riddles
The riddle forum is back up: http://www.jiskha.com/net_riddle There are some truly clever riddles being posted. The following is one of my favorites. Try not to scroll down because then you'll see the answer(s): http://www.jiskha.com/net_riddle/display.cgi?id=1169785254
April 11, 2007
new description for jiskha.com
The new meta description for jiskha.com is: Students get free homework help from teachers and experts on message boards and chat rooms. Website also features educational articles in math, science, social studies and literature. It will probably take Google a couple weeks to ...
January 25, 2007
description for Jiskha.com
A few of you have noted that Google's description of jiskha.com is ineffective on the search results. It currently reads: ----- Articles, games, humor and puzzles for many school areas including art, computers, English, foreign languages, health, home economics, ...
January 24, 2007
What effect do lifting of price controls have on inflation in the long run? I need some ideas... I think inflation will eventually be under control in the long run, but i don't know what factors will cause that. Good tough question. Take a shot. I would think that lifting ...
January 21, 2007
What long term effect do lifting of price controls have on inflation? This is a debatable issue. What does your book say? What do you think? Will inflation increase in the short run but then eventually decrease because when prices are too high, nobody is willing to buy?
January 20, 2007
Hint: The total of angle measurements inside any pentagon is the same. Hint: Look up the mathematical definition of an arithmetic sequence. IF THE MEASURES OF THE ANGLES OF A PENTAGON FORM AN ARITHMETIC SEQUENCE, WHAT ARE THE GREATEST AND LEAST MEASURES EACH ANGLE CAN HAVE? ...
January 10, 2007
how to sketch a graph of..
Local minimum and local maximum imply that the function approaches negative and positive infinite at opposite sides of the graph. Local minimum (1,1) and local maximum (3,3) means the slope of the function is 0 at these points. Thank you so much. So 1)when the local minima is...
November 5, 2006
We just added a number of articles: http://www.jiskha.com/school_supplies This is one of my favorites: http://www.jiskha.com/school_supplies/staples.html Very nice!! =)
October 30, 2006
one-third done with new forum
I worked on the new forum all day yesterday. It should be done by the end of tomorrow. There won't be any visual changes, but the forum should load even faster. Also, that silly random error message will stop occuring. Wonderful! Keep up the good work. DAG We ALL ...
October 26, 2006
random error messages
Sometimes when posting a new message, a software error will occur with an "unable to post" warning. Right now I am working on fixing this error message once and for all. In the meantime, if you get this message, hit refresh on your browser to try to post the message ...
October 25, 2006
message board threads
As you may have noticed, an entire thread can now be viewed by accessing the original message. I think this is great for students, and this may enhance search engine rankings. If anyone has serious objections to this, please let me know. Thanks, Leo I think it's wonderful...
October 24, 2006
open-ended formatting tags no longer an issue
If you forget to end your bold or italic tags, this is no longer an issue. All formatting tags are terminated at the end of each post. Tags currently allowed for anyone to use are b, i, u, sup and sub. example It is still good practice, however, to pair each opening tag with a...
October 24, 2006
I think we're doing something right
I noticed a few things: 1. when I search for homework help on Google, we're #10 (page 1)! 2. We received so many homework questions yesterday that page 1 and 2, and half of 3, was filled up with questions from Thursday. 3. 99% of the students who post are receiving GREAT ...
October 20, 2006
subscripts and superscripts enabled
Examples: The water molecule: H20 Quadratic: ax2 + bx + c = 0 Just like you would use the b tag for bold or the i tag for italic, use the sub and sup tags for subscript and superscript. that's great...but what do you mean "b tag" and "i tag" ?? the b ...
October 12, 2006
how can we improve jiskha.com?
How can we improve jiskha.com? Any ideas for improvement are welcome. Thanks! Perhaps separating the subject areas. The subject area categories could be fairly general: English, including how to research Mathematics/economics Sciences Social studies/history Foreign languages ...
October 12, 2006
search box on jiskha.com
The search box at the top of this page now searches the entire jiskha.com forum in real time. http://www.jiskha.com/search/search.cgi?query=apples Nice. very nice.
October 11, 2006
5th grade math
what is the least common multiple The least common multiple is the lowest possible number that has both numbers for a factor. For instance, if you are asked to find the LCM for 4 and 8, the LCM would be 8 because it is divisible by both 4 and 8. If you were given 3 and 4, the ...
October 5, 2006
Does the following sentence contain any grammatical errors? Those are the kinds of people whom I will never talk to. Thanks, Leo Although it ends with a preposition, which some purists consider poor form, I see nothing wrong with the sentence. It also used "whom" ...
August 9, 2006
homework help ranking
When I search for homework help on google from my computer, jiskha is ranked at #14. What is jiskha ranked on your computer? Thanks. Jiskha came in 12th on my computer. About 14 with or without " " Probably because of lower use during summer? 14th here -- and I think...
July 16, 2006
#2 on msn
I just noticed that if you search for homework help on m.s.n, we're number 2. ... and #8 on Google! =) # 4 on Yahoo And #1 with me. For a couple weeks now, if I search for homework help on my own connection, jiskha is ranked at #11 or #12. But if I go to the library, ...
June 28, 2006
new data type for forum
Currently the forum uses hash maps which becomes extremely complex and prone to glitches as the number of posts approaches 10,000. I have determined that one solution would be to use linked lists instead of hashes. In fact, linked lists, also known as threads, is what most ...
June 20, 2006
What is the formula to determine someone's annual salary given only the hourly wage? For example, if someone works full time for $20 per hour, how much does he earn in a year? A friend of mine told me the formula before; it's really simple. I just forgot it. Thanks! If...
June 13, 2006