Answer:
the law of conservation mass states that the mass of an isolated system cannot be created nor destroyed by any chemical reaction or physical transformation.
thus, there must be an equal number of atoms of an element present on both sides of the equation.
Answer:
The same 45.98 g of NaCl will be produced since 2 moles of Na will react with 2 moles of NaCl. Hence the stoichiometric coefficient will be in a ratio of 1:1
Swamp region. Swamps are known to be foggy and very murky at all times, the fog creating a cold atmosphere.
<h3>Answer:</h3>
False: Isotopes have variable number of Neutrons.
<h3>Explanation:</h3>
Isotopes are defined as those atoms of same element which have same number of protons but different number of neutrons hence, isotopes have different number of neutrons and mass number respectively.
Example:
Hydrogen have three Isotopes;
i) Protium-1 having 0 neutrons
ii) Deuterium-2 having 1 neutron
iii) Tritium-3 having 2 neutrons
While, when the number of electrons for a particular atom varies it results in the formation of ions of that atom.
Example:
Hydrogen when looses one electron it converts into H⁺
Nitrogen when gains three electrons it converts into N⁻³
Chlorine when gains one electrons it converts into Cl⁻
Magnesium when looses two electrons it converts into Mg⁺⁺