Answer:
1 : 2
Explanation:
From the question given, we obtained the following information:
T1 = 287°C = 287 +273 = 560K
T1 = 587°C = 587 +273 =860K
V1 = V
V2 =?
V1 /T1 = V2 /T2
V/560 = V2/860
Cross multiply
V2 x 560 = 860 x V
Divide both side by 560
V2 = (860 x V) / 560
V2 = 1.54V = 2V
The ratio of initial to final volume =
V1 : V2
= V : 2V
= 1 : 2
Answer:
118.75°C is the boiling point of a solution.
Explanation:
Mass of the solute that is barbiturates = 42.5 g
Molar mass of a solute = 184.2 g/mol
Moles of solute = 
Mass of the solvent that acetic acid = 825 g = 0.825 kg

Molality of the solution (m):

Elevation in boiling point is given as:

i = 1 (organic compound)


= Boiling temperature of solution.
T = boiling temperature of solvent that is acetic acid=117.9°C


118.75°C is the boiling point of a solution.
Answer:
When the net force is greater than 0, it is an unbalanced force. The force acting on an object changes its speed and direction of motion. If the forces are balanced the object will not move and the velocity will remain constant.
Hence the object's motion will change in the direction of greater force.