4. Write and balance the chemical equation that relates to each of the following word equations: Remember that some elements exist as diatomic molecules (oxygen, nitrogen, hydrogen, halogens). a. solid zinc metal + oxygen gas → solid zinc oxide 1 22n(s) + O2(g) →→2 Zn 06) b. HCl (aq) + magnesium hydroxide (aq) → magnesium chloride (aq) + water 2 HCl(aq) + Mg(OH)2(ar) → Mgcla(aq) + 2 H₂O 20 HNO 1 H CI Mg c. HNO3(aq) + calcium hydroxide (s)→ calcium nitrate (aq) + water 2 HNO3 (12) + Ca(OH)2 (s)-> Ca(NO3)2(aq) + 2 H₂O(1)

Chemistry: Principles and Reactions
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Author:William L. Masterton, Cecile N. Hurley
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Chapter21: Chemistry Of The Nonmetals
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I need help with number 4. I need help with the balanced chemical equation for parts a, part b, and part c. 

Topics:
●
Balancing Equations
Writing a chemical equation
Practice:
1. In the reaction: 4Li (s) + O2(g) → 2Li₂0 (s)
a. what is the product?
Liao (s)
b. what are the reactants?
Li(5) Oo (3)
Atom a reactant
1
●
e. in what phase is the lithium oxide?
Solia
c. what does the "(s)" after the formula of lithium oxide signify?
Phase: Solid
d. what is the coefficient of the lithium metal?
Stoichiometry
Molecule Atom in product
2
Li
2. Define "chemical reaction".
A process in which one or more substances reactants) are changed into 1 or more other
substance products).
-Ionic or covalent bonds are made and/or broken, and a new substance is made
3. List the observations that are evidence of a chemical reaction:
-Color Change, formation of a new phase, a new odor, a temperature chame,
emission light, or appearance of flame.
4. Write and balance the chemical equation that relates to each of the following word equations:
Remember that some elements exist as diatomic molecules (oxygen, nitrogen, hydrogen, halogens).
a. solid zinc metal + oxygen gas → solid zinc oxide
22n(s) + O2(g) →→2 Zn 06)
HNO
1
2
2n
b. HCl (aq) + magnesium hydroxide (aq) → magnesium chloride (aq) + water
2 HCl(aq) + Mg(OH)2(ar) → MgCl2(aq) + 2 H₂0)
1 H
CI
Mg
c. HNO3(aq) + calcium hydroxide (s) → calcium nitrate (aq) + water
2 HNO3 (12) + Ca(OH)2 (s)-> (a (NO₂)2(aq) + 2 H₂O(1)
Transcribed Image Text:Topics: ● Balancing Equations Writing a chemical equation Practice: 1. In the reaction: 4Li (s) + O2(g) → 2Li₂0 (s) a. what is the product? Liao (s) b. what are the reactants? Li(5) Oo (3) Atom a reactant 1 ● e. in what phase is the lithium oxide? Solia c. what does the "(s)" after the formula of lithium oxide signify? Phase: Solid d. what is the coefficient of the lithium metal? Stoichiometry Molecule Atom in product 2 Li 2. Define "chemical reaction". A process in which one or more substances reactants) are changed into 1 or more other substance products). -Ionic or covalent bonds are made and/or broken, and a new substance is made 3. List the observations that are evidence of a chemical reaction: -Color Change, formation of a new phase, a new odor, a temperature chame, emission light, or appearance of flame. 4. Write and balance the chemical equation that relates to each of the following word equations: Remember that some elements exist as diatomic molecules (oxygen, nitrogen, hydrogen, halogens). a. solid zinc metal + oxygen gas → solid zinc oxide 22n(s) + O2(g) →→2 Zn 06) HNO 1 2 2n b. HCl (aq) + magnesium hydroxide (aq) → magnesium chloride (aq) + water 2 HCl(aq) + Mg(OH)2(ar) → MgCl2(aq) + 2 H₂0) 1 H CI Mg c. HNO3(aq) + calcium hydroxide (s) → calcium nitrate (aq) + water 2 HNO3 (12) + Ca(OH)2 (s)-> (a (NO₂)2(aq) + 2 H₂O(1)
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