PLEASE HELP ASAP A rock originally had 4800 atoms of 40K and no 40Ar. It now has 800 atoms of 40K. Assuming that the only chemical process is radioactive decay of potassium to argon,

a) 1.576 billion years
b) 1.375 billion years
c) 3.357 billion years
d) 4.660 billion years
e) 5.303 billion years

what is the age of the rock?

hey there!

boiling point is the temperature at which the vapor pressure of the liquid equals atmospheric pressure. the vapor pressure of solvent molecules is decreased when a solute is added, so a higher temperature is required to increase the number of solvent molecules in the gas phase above the liquid.

at the freezing point, the vapor pressures of the solid and liquid are equal; a lower temperature is needed to reduce the number of solvent particles above the liquid.

hope this you

tobey