After 41.0 min, 41.0% of a compound has decomposed. what is the half-life of this reaction assuming first-order kinetics?

Why is an elements atomic mass not listed as a whole number on the periodic table

How do scientists think that gravity affected the formation of our solar system?

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons