Answer:
True.
Explanation:
Adding a non - volatile solute to solvent, decreases the tendency for water molecules to evaporate into gas phase i.e these non - volatile solute particles obstruct or reduce the rate of evaporation. Few water molecules in the vapour.
Therefore, Adding a nonvolatile solute to a solution decreases the vapor pressure of the solution while
Vapor pressure is a measurement of the likelihood of the molecules of a pure solvent to change from the liquid to the vapor phase.
Using Raoult's Law:
Psol = Xsolv * P°solv
where:
Psol = the vapor pressure of the solvent above the solution,
Xsolv = the mole fraction of the solvent in the solution, and
P°solv = the vapor pressure of the pure solvent.
Answer:
The mass of the block of ice is 90.91 kg.
Explanation:
The expression for the equation of motion is as follows;
Here, u is the initial speed, a is the acceleration, t is the time and s is the distance.
Calculate the acceleration of the given block.
Put t= 5 s, s= 11 m and u= 0 in the above expression.
The expression for the force in terms of mass and acceleration is as follows;
F= ma
Here, F is the force and m is the mass.
Put F= 80 N and .
80= m(0.88)
m=90.91 kg
Therefore, the mass of the block of ice is 90.91 kg.
Answer:
88.89 cm
Explanation:
We are given that
Distance between bulb and wall=4 m=
1 m=100 cm
Let h be the height of object
Object distance=-u
Image distance= v
Height of object=2h
Magnification=
Lens formula
(9) The force needed to make the object fall on Earth is 127.4 N.
(10) The mass of the object falling at the acceleration due is 1.94 kg.
(11) The force required for feather is 0.98 N and the force required for the bowling ball is 44.1 N
(9) The force needed to make the object fall on Earth is calculated form Newton's second law of motion.
F = mg
where;
- <em>m is the mass of the object = 13 kg</em>
- <em>g is acceleration due to gravity = 9.8 m/s²</em>
<em />
F = 13 x 9.8 = 127.4 N
Thus, the force needed to make the object fall on Earth is 127.4 N.
(10) The mass of the object is calculated from Newton's second law of motion.
F = mg
Thus, the mass of the object falling at the acceleration due is 1.94 kg.
(11) The force required to make each of the objects fall is calculated from Newton's second law of motion.
Force required for feather: F = 0.1 x 9.8 = 0.98 N
Force required for the bowling ball: F = 4.5 x 9.8 = 44.1 N.
Learn more here:brainly.com/question/19887955
Explanation:
this is how I understand it!!