Calculate the amount of depression that will occur when 5 g of sodium chloride is dissolved into 0.250 kg of water. remember when sodium chloride dissolves in water it breaks into two particles. the kf for water is 0.512 0c/m.

Answer : The amount of depression will be,

Explanation :  Given,

Mass of sodium chloride = 5 g

Mass of water = 0.250 kg

Molar mass of sodium chloride = 58.5 g/mole

Formula used :  

where,

= change in freezing point

i = Van't Hoff factor for electrolyte solution (sodium chloride) = 2

= freezing point constant =

m = molality

Now put all the given values in this formula, we get

Therefore, the amount of depression will be,

b.

hope this : )

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )