The half life for the radioactive decay of potassium- to argon- is years. Suppose nuclear chemical analysis shows that there is of argon- for every of potassium- in a certain sample of rock. Calculate the age of the rock. Round your answer to significant digits.

Explain how the integumentary system plays a crucial role in the ability to maintain homeoestasis

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp

What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees celsius to a solid at the same temperature? melting point of substance y = 35 degrees c; δhvaporization = 3.67 j/mol; δhfusion = 3.30 j/mol. mwsubstance y = 28.22 g/mol. −12.4 j −3.51 x 102 j 1.24 x 101 j 351 j