Answer: lower freezing point and a higher boiling point than water
Explanation:
Addition of a non volatile solute leads to elevation in boiling point and depression in freezing point.
This increase in boiling point arises because particles of the non-volatile solute occupy the surface of solution due to which solvent particles can not escape out of the solution. Hence, high amount of heat is required for the solute particles to escape out of the solution. Therefore, an increase in boiling point will occur.
Also as vapor pressure of solution becomes less, the freezing point gets depressed as freezing point is the temperature at which vapor pressure of solid becomes equal to the vapor pressure of solution.
Thus at standard pressure when NaCl is added to water,the solution will have a lower freezing point and a higher boiling point than water
The answer is Cl- or A. Hope it helps
ANSWER
Theory of relativity.
In the year 1905 a famous mathematician and physicist named Albert Eisenstein gave a theory which shows relation between time and motion.
yes i am talking about special theory of relativity.
actually theory of relativity is divided in two parts
1. special theory of relativity
and
2. general theory of relativity.
✔special theory of relativity is based on the time and motion.
there are two frame of references.
1. inertial frame of reference
and
2. inertial frame of reference.
in inertial frame of reference we talk about when body is moving with constant velocity.
and
in non inertial frame of reference we talk about unconstant velocity.
in the special theory it is used that the time and motion are relative.
and there is a postulate that
✳ Nothing can travel faster than the speed of light that is.
299692458m/s and universe is limited at this speed so if a object moves near the speed of light then the time slows down for that object in order to maintain that speed.
Now
Theory of general relativity.
✔ after giving special relativity Einstein was not satisfied and wanted to know about how gravitational force can affect time.
so he gave general theory of relativity.
in this we talk about the gravitational force.
space time curvature
fabric of cosmos and many more thing
in this Einstein showed that how gravitational force affect the time and also showed that the planets revolve around the sun because of the curve in space time
Answer: The given temperature is known as melting point of naphthalene.
Explanation:
Melting point is defined as the temperature at which solid gets converted to liquid.
The temperature remains constant until all the solid has been converted to liquid. At this temperature, solid state and liquid state are present at equilibrium.
We are given:
A solid piece of naphthalene is heated till 80°C until all the solid is melted.
Hence, the given temperature is known as melting point of naphthalene.
If a solid piece of naphthalene is heated and remains at 80 degrees Celsius until it is completely melted, you know that 80 degrees Celsius is the melting point of the solid naphthalene. This is the maximum temperature at which the chromium is in its solid form.
Answer:
False.
Explanation:
False. The speed of sound is greater in aluminum than in steel.
Explanation:
When water vapour changes to liquid water then this process is known as condensation.
For example, when lid is placed in a hot water filled pan then after sometime vapours appear on the surface of lid. When temperature of water decreases then water vapours convert into liquid form.
Thus, we can conclude that in condensation water vapor changes to liquid water.