Monday
December 9, 2013

# Posts by Brooke

Total # Posts: 535

physics
At the point of fission, a nucleus of 235U that has 92 protons is divided into two smaller spheres, each of which has 46 protons and a radius of 5.08 multiplied by 10-15 m. What is the magnitude of the repulsive force pushing these two spheres apart?

physics
Calculate the net charge on a substance consisting of a combination of 4.3 multiplied by 1013 protons and 2.5 multiplied by 1013 electrons.

US History
Got a question: On our class we have to write a research paper tracing the historical causation of a current event and the current event has to be with in a year! Can someone help me with suggestions?

chem pH
calculate the pH when 10 mL of .511 M sodium acetate and 20.00 mL of 0.350 M acetic acid

chem
calculate the pH of 0.25 M formic acid and 0.40 M sodium formate

chem
calculate the solubility of barium sulfate (Ksp=1.1x10^-10) in a) water b) a 0.10 M barium chloride solution help is GREATLY appreciated

Chemistry
Calculate the pH of an aqueous solution containing 3.8 10-2 M HCl, 1.0 10-2 M H2SO4, and 3.3 10-2 M HCN.

Chemistry
A 0.25 g sample of lime (CaO) is dissolved in enough water to make 1487 mL of solution. Calculate the pH of the solution

history
C) fought in a traditional manner

Culinary arts
What does the term coving mean?

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