Answer:
4.00 M = moles of solute. 12.0 L.
Explanation:
Answer:
21.3dm³
Explanation:
Given parameters:
Initial volume of gas = 3dm³
Initial pressure = 101kPa
Final pressure = 14.2kPa
Unknown
Final volume = ?
Solution:
To solve this problem, we use the Boyle's law which states that "the volume of a fixed mass of a gas varies inversely as the pressure changes if the temperature is constant".
Mathematically;
P₁ V₁ = P₂ V₂
P and V are pressure and Volume
1 and 2 are the initial and final states
Now insert the parameters and solve;
101 x 3 = 14.2 x V₂
V₂ = 21.3dm³
Answer:
filtration and Chromatography
Explanation:
The first method used for separation of solids from the mixture is filtration. Filtration is used to separate different solids in a mixture which has particles of different sizes. Other method is Chromatography in which the compounds in the mixtures are separated from each other by moving the mixture at high speed. Due to high speed, the compounds are separated from each other because different compounds have different speeds so it is separated easily.
Answer: Option (a) is the correct answer.
Explanation:
As potential energy is the energy obtained by a substance or object due to its position.
So, when a chemical bond is formed between energy is located at a particular position due to which there exists a chemical potential energy.
Therefore, as the bond begins to form, the force between the atoms becomes more (attractive, repulsive) which means the bond reaches to a higher position.
Hence, there will be an increase in potential energy.
Thus, we can conclude that as the bond begins to form, the force between the atoms becomes more (attractive, repulsive) and the potential energy increases.