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Suppose a piano tuner hears 2 beats per second when listening to the combined sound from her tuning fork and the piano note being tuned. After slightly tightening the string, she hears 1 beat per second.

asked Jun 25, 2020

Physics
high-school

1 answer

2 votes

107k views

If the absorbance at 555nm wavelength of a 0.35 moles/liter sample of stained protein has an absorbance of 0.12, what is the concentration of a sample whose absorbance is 0.26. use beer's law.

asked Jan 25, 2020

Chemistry
high-school

1 answer

2 votes

1.5k views

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