# Platinum (Pt), with a mass number of 190 and an atomic number of 78, decays by emission of an alpha particle.?

1.) Platinum (Pt), with a mass number of 190 and an atomic number of 78, decays by emission of an alpha particle. Identify the product of the nuclear reaction by providing its atomic symbol, mass number, and atomic number.
2.)a,What is the volume percent of a solution prepared by dissolving 21 g of NaOH in...
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1.) Platinum (Pt), with a mass number of 190 and an atomic number of 78, decays by emission of an alpha particle. Identify the product of the nuclear reaction by providing its atomic symbol, mass number, and atomic number.

2.)a,What is the volume percent of a solution prepared by dissolving 21 g of NaOH in enough water to make a final volume of 120 mL? Show your work.

b, How many mL of a 10% solution can be made from the solution in part a? Show your work.

2.)a,What is the volume percent of a solution prepared by dissolving 21 g of NaOH in enough water to make a final volume of 120 mL? Show your work.

b, How many mL of a 10% solution can be made from the solution in part a? Show your work.

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