Wednesday
May 22, 2013

Total # Posts: 32

College Physics
When searching for gold, measurements of g can be used find regions within the Earth where the density is larger than that of normal soil. Such measurements can also be used to find regions in which the density of the Earth is smaller than normal soil; such regions might conta...

Chemistry
The environmental protection agency allows 10 ppb concentration of arsenic in drinking water. What is the molarity of As in this solution?

Chemistry
The environmental protection agency allows 10 ppb concentration of arsenic in drinking water. If an 8 oz glass of water is at 10 ppb, how many ug of arsenic (As) is present? (8 oz= 236mL)

Chemistry
If a person has a BAC (blood alcohol concentration) of 0.08% v/v, would it be considered higher than the legal limit if the legal limit was 0.08 g/dL? (The density of ethanol is 0.789g/ mL)

Chemistry
How do I balance the following into an equation? 10 mL of 2.0 M HCl is react with 8 mL of 1.7 M Ca(OH)2 in a neutralization reaction.

History
I know that WWII and the holocaust are definietly completely different things I don't know about your second questions though...

MATH
Two planes leave an airport at the same time, one flying east, the other flying west.The eastbound plane travels 100 mph slower. They are 3040mi apart after 4hrs. find the speed of each plane

American History
What is the significance of providing an official charter, such as was given to Sir Walter Raleigh by Queen Elizabeth?

Math
x/4 - 3x/2 = -1/2

Mat
1/4c + 2 = 3/4 c=?

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