If element X (hypothetical) requires 58 years for 100g to decay to 12.5g, what is the half life for element X?

Which of the following is not a true statement about dwarf planets? a the kuiper belt contains comets, asteroids, and dwarf planets. b ceres is a dwarf planet located in the kuiper belt. c the largest known dwarf planet in the solar system is named eris.

Suppose that during that icy hot lab 65,000 j of energy were transferred to 450 g of water at 20°c what would have have been the final temperature of the water

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure