Answer:
∆t(f) = 49.755C
Explanation:
Freezing point is defined as the point in which a liquid changes from liquid to solid state. Therefore, to calculate the freezing point of aqueous solution of propanol
∆t = k × I × m
Where k is cryscopic constant =
I = vant Hoff factor = 2
M = molar concentration = 12.25m
∆t (f) = 1.9 × 12.25 × 2 = 49.755C
Answer:
it is 8
Explanation:
The number of atoms of each element present in one unit of ammonium carbonate is found by multiplying each element in parenthesis by two. Thus, the total number of nitrogen atoms is 2, hydrogen is 8, carbon is 1, and oxygen is 3 in one unit of (NH4)2CO3 ( N H 4 ) 2 C O 3 .
Answer: Option (A) is the correct answer.
Explanation:
It is known that particles of a gas are held by weak Vander waal forces, therefore, there is no force of attraction between gas molecules.
As a result, these particles are in random motion.
Thus, we can conclude that out of the given options, the constant motion of the particles in a gas allows a gas to fill a container.
A is true of UV rays.
B is true not of UV rays but rather of visible light.
C is true not of UV rays but rather of microwaves. (unless you actually toast your toast in a toaster like a normal person)
D is true not of UV rays but rather of radio waves.
Answer:
Sound waves transfer energy by the motion of particles
Explanation: guessing lol