The balanced reaction is:
Mg (s) + 2HCl (aq) = H2 (g) + MgCl2 (aq)We are given the amount of reactants to be reacted. This will be the starting point of the calculations.
.125 L HCl solution (6.0 mol HCl / L solution) ( 1 mol H2 / 2 mol HCl ) ( 2.02 g H2 / 1 mol H2 ) = 0.76 g H2
During collisions between two gas particles, kinetic energy is transferred without any loss.
The motion of gas particles is constant and random.
Answer: Collisions between gas particles are inelastic.
Explanation: Kinetic Molecular Theory explains the basic relation between the temperature and the speed of the gaseous molecule . From this theory itself, ideal gas equation was born.
the incorrect postulates among the given is that the 'Collisions between gas particles are inelastic' because during collision, the gas molecules collide with one another as well as with the walls of the container .
Thus there is no loss of kinetic energy in the collision phenomenon .
It is also correctly given that Gas particles are small and spherical with an insignificant volume and the motion of gas particles is constant and random.
The red light appears first in the visible light spectrum as it exhibits the longest wavelength, and is refracted the least.
The phenomenon of bending of light as it moves from one medium to another is termed refraction. The intensity of refraction enhances with the decrease in the wavelength of light. The shorter wavelengths of light, that is, blue and violet are slowed more and at the same time experience more bending in comparison to the lights of longer wavelengths, that is, red.
The red color exhibits the longest wavelength and the slowest vibration, on the other hand, violet color exhibits the shortest wavelength and the fastest vibration of energy. The longer the wavelength, the less it is refracted and vice versa, This is the reason that red light appears first in the visible light spectrum.
Thus, the correct answer is option D.
Find out more information about the relation between wavelength and refraction here:
Answer:
c.
Explanation:
c. neon atoms.
d. magnesium and chlorine atoms.
salt
B.
water
C.
beaker
D.
oxygen
Answer : The correct option is (A) Salt.
Explanation :
Solute : It is defined as a substance which is dissolved in a solvent. It is a smaller component of a solution.
Solvent : It is defined as a substance that dissolves a solute. It is a larger component of a solution.
In a salt and water solution, the solute is salt component and the solvent is water component.
Therefore, the correct answer is Salt.