Physics
Find the modulus direction cosin unit vector 1) 4a-2b+3c (2) a-7b+5c (3)4a-3b+c
philosophy
I am to write a two page dialogue between Socrates and a person. I was thinking about writing about domestic violence. What do you think about that subject. Should I use statistics and numbers regarding this issue.
math
in triangle ABC, AB = BC and ABC = 42. find ACB
Math
Do you think regular or irregular polygons are used more frequently in the design of objects and buildings in the world???
Chemistry
2C2H6+7O2=4CO2+6H2O how many moles of H2O are produced when a mixture of 0.427 moles of O2 and 0.150 moles of C2H6 is burned, iv already found moles of H2O for them separately.
university chemistry
many cola soft drinks contain caffeine and benzoic acid (pKa 4.2), explain how you would isolate separately pure caffeine and benzoic acid from an aqueous solution containing both compounds
university chemistry
this is for a chemistry laboratory experiment called "how much caffeine is there in instant coffee" What should be the pH of the aqueous layer to extract caffeine? There are three aqueous solutions that you may choose from. A. pH >14, using 2.5 M NaOH (aq) B. pH 1...
math
if my average is 88 percent. and if another grade is added, is it possible that my average would be the same
physics
Suppose that the pressure of an ideal gas mixture remains constant at 1700 Pa (1 Pa = 1 N/m2) and the temperature is increased from 400K to 800K. How much work does the gas do to the surroundings during expansion?
Math
for x i got -3.57 is this correct?
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