Suppose the half-life of an isotope is 2 days. You purchase 10 grams of the isotope, but it was produced in a laboratory 4 days before it was delivered to you. How much of this isotope will you have 3 days after it was delivered to you?

A) more than 2.5 grams but less than 5 grams
B) 2.5 grams
C) more than 1.25 grams but less than 2.5 grams
D) 1.25 grams
E) less than 1.25 grams


E

Physics & Space Science

You might also like to view...

One of the advantages of charge-coupled devices over photographic plates is that a CCD can record bright and faint objects on the same exposure

a. True b. False Indicate whether the statement is true or false

Physics & Space Science

In the grapefruit model of the solar system, it would take a few minutes to walk from the Sun to Pluto

Indicate whether the statement is true or false

Physics & Space Science

A stationary but movable 450-kg cannon is fired, and the 12-kg cannonball moves off to the right with a velocity of 20.0 m/s. What is the cannon's velocity (neglecting friction or any restraints)?

Physics & Space Science

After a glass rod is rubbed with a nylon cloth

A. both the rod and cloth will have a positive charge. B. the rod will have a negative charge and the cloth positive. C. both the rod and cloth will have a negative charge. D. the rod will have a positive charge and the cloth negative. E. the rod will have a negative charge and the cloth will be neutral.

Physics & Space Science