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1. Magnesium burns in oxygen to form solid magnesium oxide. 2. Balance this reaction: A. If you just want to focus on the chemicals: Zinc reacts with cobalt(II) chloride to form elemental cobalt and zinc chloride. B. If you also want to incorporate states of matter: Elemental zinc reacts with aqueous* cobalt(II) chloride to form elemental cobalt and aqueous zinc chloride. *Aqueous compounds are dissolved in water, e.g. NaCl (aq), also known as salt water! 3. Elemental sodium reacts with water to form sodium hydroxide and hydrogen. 4. Methane (CH4) reacts with water to form carbon monoxide and hydrogen. 5. Heptane (C7H16) reacts with oxygen to form carbon dioxide and water. 6. Potassium permanganate and hydrochloric acid react to form manganese(II) chloride, potassium chloride, chlorine gas, and water. 7. Elemental sodium, crown sulfur (S8), and oxygen combine to form sodium metabisulfite, Na2S2O5.
Added by Jivin Y.
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Step 1:** Balance the reaction for magnesium burning in oxygen to form magnesium oxide: 2 Mg + O2 -> 2 MgO ** Show more…
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Write and balance the chemical equation of the given chemical reaction. 1. Magnesium (Mg) reacts rapidly and dramatically when ignited, combining with oxygen gas (O2) from the air to produce a fine powder of magnesium oxide (MgO). 2. Sodium hydroxide (NaOH) decomposes on heating to yield sodium oxides (Na2O) and water (H2O). 3. Zinc (Zn) reacts with hydrochloric acid (HCl)to produce aqueous zinc chloride (ZnCl2) and hydrogen gas (H2). 4. Iron (Fe) combines with oxygen gas (O2) to form Ferric oxide (Fe2O3). 5. Carbon dioxide (CO2) reacts with water (H2O) to form carbonic acid (H2CO3).
Frank D.
4. Magnesium undergoes a single replacement reaction with iron (III) nitrate. a. Write a balanced chemical equation for this reaction b. How many grams of magnesium are needed to completely react with 4.50 g of iron (III) nitrate? c. How many grams of magnesium nitrate can be produced from 4.50 g iron (III) nitrate? 5. Zinc chloride undergoes a double replacement reaction with sodium acetate. a. Write a balanced chemical equation for this reaction. b. How many grams of zinc acetate are made from 1.4 g sodium acetate? c. how many grams of zinc chloride are needed to produce 8.70 g sodium chloride? 6. Hydralazine is a drug used to treat heart disease. It is 59.99% carbon, 5.03% hydrogen, and 34.98% nitrogen and has a molecular mass of 160.178 g/mol. What is the molecular formula for hydralazine?
Ma Ednelyn L.
When magnesium metal is burned in air, most of it reacts with oxygen, producing magnesium oxide, $\mathrm{MgO}$. However, at the high temperature of this reaction, some of the magnesium reacts with nitrogen in the air to produce magnesium nitride, $M g_{3} N_{2} .$ This magnesium nitride can be eliminated by adding water, which reacts with the magnesium nitride to produce magnesium hydroxide, $\mathrm{Mg}(\mathrm{OH})_{2}$, and ammonia, $\mathrm{NH}_{3} .$ The balanced equation for that reaction can be represented by the following: For each element, verify that the same number of atoms appears on both sides of the equation. Write the balanced equation using molecular formulas.
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