A hypothetical situation of being stranded on a deserted island without water is often posed to students. A model of a process used to
separate salt water into its components is shown here. Justify the use of the flame in the model depicting the separation of the
mixture.

The flame will sterilize the water, so that water from the ocean will be
consumable. This is known as sanitation.
The flame will allow the pure water and salt water to separate into
different layers. This is known as density separation.
The flame will burn the salt component of the mixture, leaving only the
pure water behind for drinking. This is known as combustion.
The flame will allow the water to evaporate and be collected in its pure
form, leaving the salt component behind. This is known as distillation.

a boiling water reactor does not boil the water. a pressurized water reactor boils the water faster. a pressurized water reactor is heated directly by the core. a pressurized water reactor does not use fission.

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

weight of any object is given by

w = m*g

where m is mass of the object and g is the acceleration due to gravity.

for earth the value of g is 9.8 m/s^2 so

w=117.6 n m=12 g=?

117.6=12g => g=9.8 m/s^2

which is the force of gravity on earth.