Do all liquids boil at the same tempature?

Different fluids have different boiling points depending on the bonding between the particles and the mass of the particles. The heavier the particles,  the stronger the bonding, the higher the boiling point will be.

hope this helped :)

No, different liquids will boil at different temperatures due to a range of different variable such as  composition of liquid, pressure etc.

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally