A iodine pill which is used in the treatment of Graves disease contains 3.50 x 1014 atoms of the isotope 131I, which has a half-life of 8.00 days. How many 131I atoms remain after 11.0 hours

Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?

Water undergoes a large change in density at 0 ∘ c as it freezes to form ice. calculate the percent change in density that occurs when liquid water freezes to ice at 0 ∘ c given that

Most metamorphosis processes take place