rebeccatrentbu1563 rebeccatrentbu1563 08-01-2024 Chemistry contestada Potassium-42 has a half-life of approximately 12 hours. If a sample of ⁴²K₁₉ has an initial mass of 50. g, what mass of ⁴²K₁₉ remains after 48 hours? a) 6.25 gb) 12.5 gc) 25.0 gd) 50.0 g
