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The radioactive isotope Ra-226 has a half-life of about 1600 years. If 10 grams ispresent now, how much will be left 500 years from now?Round

The radioactive isotope Ra-226 has a half-life of about 1600 years. If 10 grams ispresent now, how much will be left 500 years from now?Round to the nearest thousandth of a gram.a) 8.912 gramsb) 8.052 gramsc) 7.839 gramsd) 7.496 grams

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