Recent content by fuzzy

Homework Statement What procedures would you use to obtain gram quantities of each of the following compounds, free of each of the other compounds? Glycine - monoamino, monocarboxylic amino acid Glucose - non-ionic monosaccharide Starch - non-ionic large polysaccharide Glucose -...

Thank you for the replies. So this is always the case if it's not otherwise stated? Because in other problems it was given as 0.5cm, so I was confused a bit. Other than that I think I get it now :D So I get a) c=\frac{A}{\epsilon} c=\frac{0.234}{1.25x10^{5}} c=1.87x10^{-6}M This...

Homework Statement The protein oxyhemoglobin has the following molar absorbance coefficients: \epsilon276 nm = 3.44 x10^{4}M^{-1}cm^{-1} \epsilon415 nm = 1.25 x 10^{5}M^{-1}cm^{-1} If a solutioin of oxyhemoglobin has an absorbance at 415nm of 0.234, a) What is the concentration at 415nm...

Hey Antiderivative, could you please send me those exams too if it's not too much trouble for you? thanks!

hehe I had to do this exact problem! see here: https://www.physicsforums.com/showthread.php?t=109527 and here: https://www.physicsforums.com/showthread.php?t=43811

Francesca dangles her watch from a thin piece of string while the jetliner she is in takes off from JFK Airport. She notices that the string makes an angle of 25° with respect to the vertical while the aircraft accelerates for takeoff, which takes about 18s. Estimate the takeoff speed of the...