Saturday
May 25, 2013

Posts by abby


Total # Posts: 520

chemistry
calculate the volume occupied by 10^22 molecules of a gas 300 k and 760 mm pressure. please help me please...................

chemistry
Specific Heat= (quantity of heat trandferred in Joules) / (mass of substance in grams) * (temperature change)

Chemistry
A calorimeter contains 30.0 mL of water at 11.0 degrees C. When 1.50 g of X (a substance with a molar mass of 65.0 g/mol) is added, it dissolves via the reaction: X (s)+H2O (l) ---> X (aq) and the temperature of the solution increases to 26.0 degrees C. Calculate the enthal...

Chemistry
Thank you Dr Bob, I actually realized right after I posted the question I was not including the 100 g of H2O in my math.

Chemistry
In the following experiment, a coffee-cup calorimeter containing 100. mL of H2O is used. The initial temperature of the calorimeter is 23.0 degrees C. If 3.80 g of CaCl2 is added to the calorimeter, what will be the final temperature of the solution in the calorimeter? The hea...

History
Mhm and I tried, I go on here to see if I'm correct. No one is always 100% correct. I ask for help so I can better understand how I was wrong, if I was wrong.I thought that's what this website was for. Help when you need it.

History
Obviously I don't think education is insane sense I'm paying for it. It's absurd for you to think people can remember everything they read. Perhaps you can, but there are plenty of people who can't.

History
A 206 page text and you expect to remember things like this? That's insane. If I'm not interested in the subject things tend to run together. Atleast I'm trying.

History
Is it B?

History
Which of the following statements is true regarding the Korean War? A. The Chinese armed and trained the North Korean army. B. Stalin was outraged by the North Korean attack on South Korea. C. Stalin approved the North Korean attack in advance. D. Both Stalin and Mao expected ...

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