(i) The element Francium is extremely rare and very little is known about its chemical and physical properties Use the following data to estimate its density and ionization energy.
Density (g/cm3)
0.86 of K
1.53 of Rb
1.87 of Cs
Ionization energy (KJ/mol
419 of K
403 of Rb
375 of Cs

it’s previous models   because when i picked that son of a gun’s answer it was wrong look for previous models because they might make it a different letter  

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 .

gasoline is a mixture. it contains several different kinds of compounds that can be present in a variety of ratios.