How much of a 100 gram sample of gold-198 is left after 810 days if it’s half life is 2.7

Whats one way that rocks do not follow the typical rock cycle pathway?

Which statement best describes the role of religion and culture in ancient medicine?

The current thought on the structure of the cell membrane is: a. a static phosphate sandwich of lipids b. a fluid-mosaic of phospholipids and proteins c. a bilayer of proteins with static lipid molecules d. an impermeable bilayer of protein molecules e. a static and permeable phospholipid single layer