Ahalf-life is the time required for one-half of the atoms of a radioisotope to emit radiation and decay to products. what value in this lab represents one half-life for the process of flipping coins? trial number of flips number of heads none of the above.

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.

Acompound has a molar mass of 92.02 grams/mole, and its percent composition is 30.4% nitrogen (n) and 69.6% oxygen (o). what is its molecular formula? a. n2o4 b. no2 c. n2o d. n4o2