Answer:
b. The shorter the half-life, the more dangerous the radioisotope.
Answer:
Option A (9.0) is the correct alternative.
Explanation:
The given values are:
Molarity,
= 1.5 M
Volume,
= 6000 mL
or,
= 6 L
As we know,
⇒ 
or,
⇒ 
By putting the values, we get


Sound energy is produced by vibrating objects.
Example: when you speak you vibrate the air molecules in the air. If you where to speak in space no “sound” would be produced since there is nothing for the vibration of your voice to travel through.