Copper has two naturally occurring isotopes, 63cu (isotopic mass 62.9396 amu) and 65cu (isotopic mass 64.9278 amu). if copper has an atomic mass of 63.546 amu, what is the percent abundance of each copper isotope?

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they it depends on if one believes about radioactivity, they make a geiger counter beep but maybe it was going to beep anyway electronics do wierd things all the time or it was programmed to beep near certain metals.

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.