Wednesday
May 22, 2013

# Posts by Jess

Total # Posts: 745

chem
A hydrofluoric acid buffer solution has the following concentrations: [HF]=0.43M [F-]=0.45M If 40 mL of 0.1M NaOH is added to 500 mL of the buffer, what is the resultant pH?

Physical Science
The conversion of water to ice is considered a physical change, whereas the conversion of iron to rust is considered a chemical change. Why?

calculus
what is the linear approximation of f(x)=x^3-x at x=2

chem
what is the ph of a solution that results from adding 30 mL of .015M KOH to 50 mL of .015 M benzoic acid?

Geology
Granite age for Scottish highlands

English
how has the world changed for the better? besides technology & medicine

trig
if one of a quadratic equation is 1/2-2i, what is the equation. the other root is 1/2+2I but i dont know how to find the equation

American Government
Who has to run for re-elecition every two years?

Social studies
Why would the Chinese want to limit population growth?

math
1) Why should we clear fractions when solving linear equations and inequalities? Demonstrate how this is done with an example. Why should we clear decimals when solving linear equations and inequalities? Demonstrate how this is done with an example.

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