After 24.0 days 2.00 milligrams of an original 128.0. Milligram sample remain what is the half life of the sample

This chart shows characteristics of three different types of atoms. which statement is best supported by the information in the chart? atom x will donate electrons to atom y. atom x will accept electrons from atom y. atom y will accept electrons from atom z. atom z will donate electrons to atom x.

Anne applies a force on a toy car and makes it move forward. what can be said about the forces acting on the toy car at the moment anne applies the force?

What is the earliest point in the universe that we can observe? why can’t we see back further than this?