law of conservation of energy_, a principle that states that matter isneither created nor destroyed. In order to satisfy this principle, you normally selectthe proper numerical (9) __coefficient__ to indicate the number of units ofeach substance taking part in the chemical change.In the space provided, express in words each of the numbered terms or symbols in the following chemical equation.Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g)10.Mg __magnesium_11.(s) _solid__12.+ ___react with__13.2 __coefficient___14.HCl(aq) _aqueous hydrochloric acid_15.(aq) __aqueous__16.→ ____reactto form___17.MgCl2(aq) _aqueous solution of magnesium chloride_18.H2___hydrogen__19.(g) ___gas____
Chemistry: Concepts and ApplicationsStudy Guide, Chapter 621Write a word equation and a balanced chemical equation for each of the reactions described below.20.Aluminum metal burns in pure oxygen gas to produce solid aluminum oxide.word equation: aluminum metal + oxygen gas → aluminum oxide solidchemical equation: 4 Al (s)+ 3 O2(g)→ 2 Al2O3(s)21.When solid mercury(II) oxide is heated, it breaks down to form liquid mercury and oxygen gas.word equation: mercury (II) oxide → mercury liquid + oxygen gaschemical equation: 2HgO (s)→ 2Hg (l) + O2(g)22.The addition of a solution of ammonium sulfate to a solution of lead(II) nitrate results in the formation of ammonium nitrate, which remains in solution, and lead(II) sulfate, which settles out of solution as a solid.
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