haleygreene4856 haleygreene4856 28-02-2024 Chemistry contestada Potassium-40 decays to argon-40, with a half life of 1.3 billion years. If an analysis of a feldspar crystal in a sample of granite shows that 75 percent of the potassium-40 atoms have decayed to form argon-40, what is the age of the granite?
