There are 6.50 g of ²⁴Na after 60 hours. How many grams were in the original sample if its half-life is 15 hours? Your answer must include the math used to arrive at the answer.

As a part of an experiment a student burns propane to produce carbon dioxide and water she remembers that she must follow the law conservation of matter when writing a balanced chemical equation which of these equation adheres to the law of conservation of matter

Explain which group an element with the electron configuration 1s2 2s2 2p6 3s2 3p6 3d1 4s2 belongs to.

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!