SHOW ALL WORK 1. The half-life of a radioactive substance is 35.7 years. How much of a 1.00 kg sample of the substance will remain after
142.8 years?

Ahypothrticalax type of ceramic material is known to have a density of 2.10 g/cm3 and a unit cell of cubic symmetry with a cell edge length of 0.57 nm. the atomic weights of the a and x elements are 28.5and 30.0 g/mol, respectively. on the basis of this information, which of the following crystal structures is (are) possible for this material: sodium chloride, cesium chloride, or zinc blende

Newtons second law deals most cosely with

Building glycogen from glucose molecules is an example of