Writing Equations

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The law of conservation of mass states

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atoms cannot be created or destroyed

Front

Which of the following symbols is not a correct indication of the phase of a substance in a reaction? Options: (s)=solid, (g)=grams, (l)=liquid, (aq)= aqueous

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(g)=grams

Front

Which is the correct chemical equation for the following: Solid Zn reacts with silver (I) chloride to produce Zinc (II) chloride and silver metal? Options: Zn + AgCl → ZnCl₂ + Ag, ZnCl₂ + Ag → Zn + AgCl, ZnCl2 + Ag₂ → Zn + AgCl, Zn₂Cl + Ag → Zn + AgCl

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Zn + AgCl → ZnCl₂ + Ag

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Chemical equation for Barium Chloride combined with sodium sulfide yields barium sulfide and sodium chloride.

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BaCl₂ + Na₂S → BaS+ NaCl

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Magnesium can be burned in oxygen to produce solid magnesium oxide. Options: Mg(s) + O₂(g)→ MgO(s), Mg(s) + O(g) → MgO(s), Mg(s) + CO₂(g) → MgO(s) + C(s), Mg(s) + O₂(g) → Mg₂O₂(s)

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Mg(s) + O₂(g)→ MgO(s)

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Which compounds are the PRODUCTS of this reaction?

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CO₂ + H₂O

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Reactants in the reaction: 2Mg + O₂ ---> 2MgO

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2Mg + O₂

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Translate the word equation: Nitrogen reacts with Hydrogen to form Ammonia (NH₃).

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Translate the word equation: Hydrogen and Carbon Dioxide react to form Carbonic Acid (H₂CO₃).

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Front

Translate the word equation: Carbon Dioxide and Hydrogen react to form Methane (CH₄) and Water.

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