a. 20 Ca decays via 3 particle emission with a half-life of 163 days. Complete the decay reaction. Write the isotope produced as Ca→8+? (Write the mass number, atomic number, and symbol for the particle.) b. If a sample contains 4.70 g of 4Ca, what mass of that isotope remains after 325 days? Half-life = 163 days g

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Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.