Saturday
March 28, 2015

Posts by df


Total # Posts: 16

precalculus
z1=[cos pi/4 +sin pi/4] z2= [cos 2pi+sin 2pi] z1= sqrt 5 solve. how do you do this? substitute z1 and do what?
March 17, 2015

Chemistry
an unknown salt is either NaCN,NaC2H3O2, NaF, NaCl, or NaOCl. when 0.100 molar of the salt is dissolved in 1.00 L of solution, the ph of the solution is 8.07. what is the identity of the salt? where do I start? How do I solve it, cuz im not gettign right answer.
March 17, 2015

precal
thanks
March 17, 2015

precal
identify all solutions in the interval [0,2pi]: cos (2x) csc^2x=2cos(2x) I have no clue how to solve.
March 17, 2015

Chemistry
sdf
September 27, 2012

Philosophy
i
September 9, 2012

chem
df
March 1, 2012

math
A triangle has sides of lengths 9 cm, 40 cm, and 41 cm. Which statement is true about this triangle? Not a right triangle?
February 28, 2011

chemistry 1A
R(CO2H)2+2NaOH-->R(CO2Na)2+2H2O Mu(NaOH)=44,81*10^(-3)*0,0953=4,27*10^… mol Mu(acid)=4,27*10^(-3):2=0,002135 mol If R=aliphatic saturated rest and there are not other substituents in C-chain,then R=CxH2x and: 0,2178=0,002135(90+12x+2)=0,1964+0,025… x=(0,2178-0,...
November 2, 2010

Chemistry
ddv
October 18, 2010

Physics
sdgdga
September 16, 2010

Macroeconomic Help please
asdf
June 9, 2010

Chemistry
df
March 30, 2010

fd
if y=36 when x=9 find x when y=52
June 17, 2008

chemistry
wtf
April 30, 2007

Muscular Energy
it's a part of your body that helps you move.
February 18, 2007

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