Answer:
Explanation:
1) NaCl → Na + Cl₂
2) Na + HCl → NaCl + H₂
Chemical equation:
NaCl → Na + Cl₂
Balanced chemical equation:
2NaCl → 2Na + Cl₂
There are two moles of sodium and two mole of chlorine on both side of equation so given chemical equation is correctly balanced and follow the law of conservation of mass.
2)
Chemical equation:
Na + HCl → NaCl + H₂
Balanced chemical equation:
2Na + 2HCl → 2NaCl + H₂
There are two moles of sodium and two mole of chlorine and hydrogen on both side of equation so given chemical equation is correctly balanced and follow the law of conservation of mass.
Law of conservation mass
According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.
Explanation:
This law was given by french chemist Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.
Answer:
Line A
Explanation:
In consideration of Charles's law of gases, temperature is directly proportional to pressure of the gas.
Ionization energy is defined as the minimum amount of energy required to knock out the electron from valence shell of an atom.
Trends in Period:
Ionization energy increases from left to right across the periodic table. This is because from left to right along the period the nuclear charge increases and the number of shells remain constant.
Trends in Groups:
Ionization energy decreases from top to bottom along the group. This is because down the group the number of shells increases and hence, the shielding effect increases shielding the valence electrons therefore, valence electrons are easily knocked out.
<h3>Conclusion:</h3>
So, we can conclude that elements at right to Phosphorous and above Phosphorous will have greater Ionization energies as compared to Phosphorous. Examples,
At right to Phosphorous;
Sulfur
Chlorine
Argon
At the top of Phosphorous;
Nitrogen
Oxygen
Fluorine
Neon
The atomic number of sodium is 11
