- Solve ln x - ln 4 = 3. Please show steps. Thanks?

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Naphthalene sublimation rate=3*10^-5/min. Volume of room=60m^3. How would I calculate the naphthalene concentration in the air of the room? Outside temperature over a day can be modelled as a sinusoidal function.? What are the applications of poisons equation? What is the partial pressure of N2 in a mixture of N2 and O2 having a total pressure of 1075 torr if the partial pressure of O2 is 720 torr? Why is always a problem in recent years, aircraft, whether artificially or incidents?