Which of the following represents the correct balanced chemical equation for the burning of coal which is still a major source of electricity in the United States.

5. Complete and balance the following combustion reactions. (You will need to determine the molecular formulas of the reactants.) а. pentane + О2 b. toluene + O2 c. cyclohexene + O2

5. Provide a balanced chemical equation, be sure to include state designations. a. Hydrogen and oxygen react to form steam. b. In an aqueous solution, zinc acetate and sodium sulfide are mixed. c. Lithium and bromine react. d. Combustion of liquid butane (C4H10). e. Dilute sulfuric acid is added to a solution of aluminum hydroxide. f. Decomposition of potassium chlorate.

10. Determine the mass percent composition of each element in calcium silicate CaSiO3. 11. A compound is found to contain 23.3% magnesium, 30.7% sulfur, and 46.0% oxygen. What is the empirical formula of this compound? 12. The complete combustion of acetylene (C₂H₂) is described by the following reaction: CHz + O2 → CO2 + H2O A. Balance the above equation with the lowest set of whole numbers. B. If 2.35g C₂H₂ is burned with enough oxygen, how many grams of CO₂ will be formed?

The following diagrams represent the reaction of  (red spheres) with  (blue spheres) to give specific products. Write a balanced equation for each reaction based on the information in the diagram.

Predict the product and write a complete, balanced equation for each reaction. a. Decomposition: Water (H₂O) b. Combination: Magnesium and nitrogen (Mg and N₂) c. Single Replacement: Aluminum and magnesium nitrate (Al and Mg(NO3)2) Magnesium and aluminum nitrate (Mg and Al(NO3)3)

Consider the representation of a reaction below. (In this diagram, red spheres represent oxygen atoms, black spheres represent carbon atoms, and small light blue spheres represent hydrogen atoms.) Honey Has access to this site What is the correct balanced chemical equation for this reaction? A. 80 +3 C + 12 H → 80 +3C+ 12 H B. 4 0, + 3 CH, → 2 CO, + 4 H,0 + CH. C. CH, + 02 → CO, + H,0 D. CH4 + 2 02 → CO2 + 2 H20 E. CH, + O, → CO, + H,0 + CH,

1. Consider the generic reaction: A + 2B→ CHow many moles of C are formed upon the complete reaction of:A. 5.0 moles of AB. 5.0 moles of B 2. For the reaction: 2N2O5 → 4NO2 + O2Calculate how many moles of NO2 form when each amount of the reactant completely reacts.A. 1.3 moles N2O5B. 1.006x10-3 mole N2O5 3. For the reaction: 2S + 3O2 → 2SO3A. Calculate the moles of S needed to completely react with 1.75 moles of O2B. Calculate the moles of product that form when 1.75 moles of O2 completely reacts. Assume thereis more than enough S. 4. For the reaction: 2S + 3O2 → 2SO3A. Calculate the mass of S (32.07 g/mol) needed to completely react with 5.3 g of O2 (32.00 g/mol).B. Calculate the mass of SO3 (80.07 g/mol) that form when 5.3 g of O2 completely reacts. Assumethere is more than enough S. 5. A mixture containing 21 moles of F2 and 8 moles of S is allowed to react according to the reaction:3F2 + S → SF6A. What is the limiting reactant?B. How many moles of the excess reactant remain after…

Use the Lewis structure shown to assign oxidation states of each indicated atoms. (There are two different carbon atoms, labeled C1 and C2.)     C1:   C2:

1. Label each of the following reactions as combination (synthesis), decomposition, single replacement, or double replacement. Then complete and balance the following reactions. Reaction Type of reaction? Redox or nonredox? H2(g) + 02 (g) → K (s) + N2 (g) → C (s) + 02 (g) → H2CO3 (aq) → electrical current H₂O (1) 300°C Au2O3 (s) 300°C Ag2O (s) → NH3 (g) → Pb (s) + Cu(NO3)2 (aq) → Na (s) + HOH (1) -> BaBr2 (aq) + Na3PO4 (aq) → H2SO4 (aq) + NH4OH(aq) → Cl2 (g) + NaI (aq) → Na2S (s) + HCl(aq) → Fe (s) + 02 (g) →