Wednesday
December 11, 2013

# Posts by Ian

Total # Posts: 187

chemistry
At 298 K, 1.35 mol BrCl(g) is introduced into a 12.0 L vessel, and equilibrium is established in the reaction. BrCl(g)-->0.5Br2(g) + 0.5Cl2(g) Calculate the amount of BrCl(g) present when equilibrium is established.(Use delta G[Br2(g)]=3.11kJ/mol and delta G[BrCl(g)=-0.98Kj...

The answer to 18 is A - pie chart

geometry
A park at the end of a city block is a right triangle with legs 150 ft and 200 ft long. Make a scale drawing of the park using the following scale 1in:300ft.

chem
I have to find the effective pH range of a buffer. I read that this optimal buffering occurs when the pH is within 1 pH unit from the pK value for the buffering system. But can anyone explain why its is optimal within 1 pH unit? Thanks.

Science
What is a reference point in determining force, velocity,speed?

Science
If a car is going 65mph makes a 90 degree, what changes?

statistics
8. Assume that the MM207 Student Data Set is a random sample of all Kaplan students; estimate the proportion of all Kaplan students who are male using a 90% level of confidence.

math
p=6s,for s

physics
If a sprinter’s velocity increases to three times the original velocity, by what factor does the kinetic energy increase?

history
why did people come to jamestown? Opitional homework question (If you read the book "Our Strange New Land" , why did elizabeth go to jamestown.

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