Answer:
Becuse magnesium is a earth alkaline metal and oxygen is a nonmetal(read explanation)
Explanation:
Magnesium has 2 valence electrons where oxygen has 6 valence electrons. Magnesium has tendency to give electrons to oxygen and oxygen has tendency to gain electrons. They are both trying to complete their last shell to 8 which is called the octet rule. Because they both want to complete each other because of the reasons that I told they combine to be stanle atoms like noble gases.
The equation for the reaction describe in the question is NH4Cl (s) --> NH3 (g) + HCl (g)
the equation of heat reaction :
ΔH25° = (ΔH25° NH3 + ΔH25° HCl) - (ΔH25° NH4Cl)
use the table from basic chemical engineering calculations of himmelblau or felder to find ΔH25°.ΔH25° of products minus ΔH25° of reactants.
hope this help
One
Uni meaning one and multicellular meaning more than one
With an Ag concentration of 0.020 M and a Pb2+ concentration of 0.0010 M, Only PbSO₄(s) will precipitate. The correct option is C.
<h3>What is molarity?</h3>
Molarity is the measure of the concentration of any solute in per unit volume of the solution.
The equations are
Therefore:
and
Since, , only PbSO₄ will precipitate.
Thus, the correct option is (C) Only PbSO₄(s) will precipitate.
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