<span>The formula actual yield /
theoretical yield is used to calculate the percent yield of a reaction.
This value is a measure of how much product is produced relative to the what is
supposed to be produced. It seems that the given in the problem is incomplete so we cannot really give a specific value. </span>
<u>Answer:</u> The atoms of every element on both the sides of the reaction must be same.
<u>Explanation:</u>
We are given a chemical equation and we need to balance it. Every equation follows Law of Conservation of mass.
This law states that in a chemical reaction, the number of atoms of each element must be same on both the sides of the equation.
For the given chemical equation:
On reactant side:
Number of zinc atoms = 1
Number of hydrogen atoms = 1
Number of chlorine atoms = 1
On product side:
Number of zinc atoms = 1
Number of hydrogen atoms = 2
Number of chlorine atoms = 2
As, the number of hydrogen and chlorine atoms on reactant and product side is not same, so we need to add a stoichiometric coefficient in-front of HCl on the reactant side. The balanced chemical equation becomes:
<h3>Answer:</h3>
Krypton has a higher melting point than argon because of its stronger dispersion forces.
<h3>Explanation:</h3>
Dispersion forces also known as London Dispersion forces are found in non polar compounds. These interactions take place in two steps.
Step 1: Instantaneous Dipole:
In non polar compounds the electron density on atom is symmetrical. When these symmetrical atoms approaches second symmetrical atom, a disturbance in electron densities occur due to repulsion between electrons. Due to repulsion the electrons density change there position and for a small period of time and instantaneous dipole is produced on an atom.
Step 2: Induced Dipole:
The dipole produced in step one when approaches another symmetrical atom, the partial positive part (low electron density site) attracts the electron from symmetrical atom and induces polarity in it. In this way the non polar atoms become polar and interacts with each other.
<h3>Factors Effecting Strength of Dispersion Forces:</h3>
i) Size of Atom / Molecule:
Greater the size of an atom greater will be the dispersion forces and vice versa.
ii) Shape of Molecules:
Greater the branching on molecule, weaker will be the dispersion forces and vice versa.
<h3>Conclusion:</h3>
As the size of Krypton is greater than Argon therefore, it will have stronger dispersion forces and will melt at higher temperature than Argon.
Answer:
The solid will start to transition from a solid to a liquid.
Explanation:
When a solid reaches the point of its melting point, the substance will start to turn into liquid form. As long as energy is constantly added, it will soon turn fully liquid. However, when it reaches it melting point, it will flip back and forth from solid to liquid form (solid to liquid equilibrium) until the energy added allows it to become fully liquid.
Take H2O for example. The melting point of solid water is 0°C. At that point, the solid ice starts to turn into water, but still is kinda solid and the ice shape is still there. When it is continuously heated (add energy), it will turn into liquid H2O.
