The half-life of radium-226 is 1600 years. How many grams of a 7 g sample will remain after 3200 years?
SHOWALL STEPS TO SOLVE THE PROBLEM

Order the sequence of ideas that lead to marie curies discovery of radioactive elements number the events in chronological order starting with the oldest

What is the rate of 12 liters of water moving through a water hose in 4.0 minutes?

Two forces produce equal torques on a door about the door hinge. the first force is applied at the midpoint of the door; the second force is applied at the doorknob. both forces are applied perpendicular to the door. which force has a greater magnitude?