Answer:
The minimum mass of ethylene glycol = 6.641 Kg
Explanation:
Where T_f = freezing point of pure solvent water, 0°C
T_f'= Freezing point of solvent after mixture
K_f = Freezing point depression constant = 1.86 °C/m
Moecular weight of ethylene glycol = 60 g/mol
Weight of ethylene glycol = 14.5 Kg= 14.5×10^3 g
molality of ethylene glycol
Substitute the values to calculate m
by formula
calculating we get w = 6641.93 g
Therefore, The minimum mass of ethylene glycol = 6.641 Kg
Explanation:
A substance that completely dissociates into ions when dissolved in its aqueous solution is known as a strong electrolyte.
Whereas a substance that does not dissociate into ions is known as a non-electrolyte.
If a substance partially dissociates into ions when dissolved in its aqueous solution then it is known as a weak electrolyte.
(a)
As there is occurring no dissociation. Hence, no formation of ions takes place therefore, it is a non-electrolyte.
(b)
As partial dissociation of ions take place in this reaction as the reaction is in equilibrium state. Hence, it is a weak electrolyte.
(c)
Here, complete dissociation of ions is taking place as the reaction is not in an equilibrium state. Therefore, it is a strong electrolyte.
(d)
Here also complete dissociation is taking place. Hence, it is a strong electrolyte.
(e)
As there is occurring no dissociation. Hence, no formation of ions takes place therefore, it is a non-electrolyte.
Answer: A
Explanation: As used in the name Producers Produce their own foods, like plants, who produce food, taking nutrients from the sun and Earth, they also require air and water.