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Physics 2- A certain radioisotope has a half-life of 9.66 days. What percentage of an initial sample of this isotope remains after 33 days? What is the melting point, boiling point and vapor pressure for 3 Ethyl 1 Heptyne? 2 Questions = Osmolarity ... Picture attached? Find the time for the charge on a capacitor to drop to 1/e of its initial charge? Suppose a boat travels due north for 17 miles, then heads northeast for 8 miles. How far from the original starting position is the boat?