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Unformatted text preview: Lewis structure and identify which bonds are ionic and which are covalent. D. Identify the formal charge on Br, Al, and N atoms in the following molecule: E. An ancient wooden tool has a carbon-14 activity of 11.5 disintegrations per minute per gram of carbon. Current carbon-14 activity in fresh samples is 15.3 disintegrations per minute per gram of carbon, and the half-life of carbon is 5730 years. Calculate the age of the wood sample....
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