15) Iridium-192 is refined into wire and used to deliver (internally) radioactivity to cancer cells in a tumor (eventually the wire is removed). Iridium-192 has a half life of
14 days. Initially you have a 36 g sample of iridium-192. Later the mass is 14.5 g. How many days have passed? For this problem, quote your answer to the nearest
whole number.

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3

the formula for the conversion of temperature from degree celsius to kelvin is:

the sample of water at is converted to kelvin temperature by using the above formula as:

on comparing the two samples of water at or we can say that at and at respectively. the difference between the temperatures of two samples of water is:

hence, one can say that the sample of water at is greater than the sample of water at by .