Determine which of the following chemical equations are correctly balanced.
Fe2O3(s)+CO(g)→2Fe(s)+CO2(g) |
Al2S3(s)+H2O(l)→2Al(OH)3(s)+3H2S(g) |
2Cr(s)+3O2(g)→Cr2O3(s) |
SiO2(s)+4HF(aq)→SiF4(g)+2H2O(l) |
Determine which of the following chemical equations are correctly balanced. Fe2O3(s)+CO(g)→2Fe(s)+CO2(g) Al2S3(s)+H2O(l)→2Al(OH)3(s)+3H2S(g) 2Cr(s)+3O2(g)→Cr2O3(s) SiO2(s)+4HF(aq)→SiF4(g)+2H2O(l)
Balance the chemical equations. Express your answer as a chemical equation. Fe2O3(s)+CO(g)→2Fe(s)+CO2(g) Al2S3(s)+H2O(l)→2Al(OH)3(s)+3H2S(g) 2Cr(s)+3O2(g)→Cr2O3(s)
52. Is each chemical equation correctly balanced? If not, correct it. (a) SiO2(s) + 4 HF(aq) — SiF4(g) + 2H2O(1) (b) 2 Cr(s) + 3 02(8) —Cr2O3(s) (c) Al,Sz(s) + H2O(l) —> 2 Al(OH)3(s) + 3H2S(8) (d) Fe2O3(s) + CO(g) — 2 Fe(s) + CO2(g)
****** Balance all of the following equations******* Part A Na2CO3(aq)+HCl(aq)→NaCl(aq)+H2O(l)+CO2(g)Na2CO3(aq)+HCl(aq)→NaCl(aq)+H2O(l)+CO2(g) Express your answer as a chemical equation. Identify all of the phases in your answer. Part B Submit Request Answer HgO(s)→Hg(l)+O2(g)HgO(s)→Hg(l)+O2(g) Express your answer as a chemical equation. Identify all of the phases in your answer. Part C Submit Request Answer Fe(s)+O2(g)→Fe2O3(s)Fe(s)+O2(g)→Fe2O3(s) Express your answer as a chemical equation. Identify all of the phases in your answer. Part D Submit Request Answer Na(s)+Cl2(g)→NaCl(s)Na(s)+Cl2(g)→NaCl(s) Express your answer as a chemical equation....
Consider the balanced chemical equation shown below: Co(s) + BrO-(aq) + H2O(l) → Br-(aq) + Co2+(aq) + 2 OH-(aq) ΔH°rxn = -259.87 kJ/mol Which of the following statements must be true about this chemical reaction? Circle all that apply. A. The reaction is fast. B. The reaction is product-favored. C. The entropy change for this reaction is positive. D. Increasing the temp will drive the reaction towards the products. E. The reaction is endothermic. F. The reaction is spontaneous. G....
Balancing Equations Balance the following chemical equations. Sicla(l)+ SiO (s)HCl(aq) 2. As 3 NaOH NaOH H2 3. Ha Au + н,s но-> voC+ H20 5. -Hg(OH)2 + H3PO4 H20 SiO2 + HF→ SiF4 + -ho 7. 2 Zn Ha → ZnClz + H2 8. HCIO4 02(g)HO HNOs(aq) NH4NO3 ut Chemistry http://chemistry.about.com Balancing Equations Balance the following chemical equations но 2. cr→ Naa 3.4 A1 +302 -Al2O3 NH3 5. CO(g) + HO 6. FeO3(s) +-- CO(g) → Fel)+ CO2(9) 7. HSO_...
Complete and balance the following equations. 1)CO2(g)+OH−(aq) 2)NaHCO3(s)+H+(aq) 3)CaO(s)+C(s) 4)C(s)+H2O(g) 5)CuO(s)+CO(g)
46. Which species in the reaction below undergoes reduction? H2O(g) + CO(g) -H2(g) + CO2(g) a. H20 b.CO CH2 d. co2 e. None 47. Which species is reduced in the reaction below? (aq) + CIO (aq) + 10 (aq) + C (aq) a. b. H20 c.cr d. 10 e. CIO 48. Which of the following elements generally acts as an oxidizing agent? a. Br2 b.H2 c. Fed . C e. Li 49. What is the oxidation number of Fe in...
A. Classify each of the following reactions as decomposition, combination, combustion, 2CH3OH(l)+3O2(g)→2CO2(g)+4H2O(g) 2KClO3(s)→2KCl(s)+3O2(g) S(s)+3F2(g)→SF6(g) CaO(s)+H2O(l)→Ca(OH)2(aq) 2Cu(NO3)2(s)→2CuO(s)+4NO2(g)+O2(g) B. Solid aluminum metal and diatomic chlorine gas react spontaneously to form a solid product. Give the balanced chemical equation (including phases) that describes this reaction. Indicate the phases using abbreviation (s), (l), or (g) for solid, liquid, or gas, respectively. Express your answer as a chemical equation. C. When heated, solid copper(II) carbonate decomposes to solid copper(II) oxide and carbon dioxide gas. Give...
Part A Determine the enthalpy for this reaction: Ca(OH)2(s)+CO2(g)→CaCO3(s)+H2O(l) Express your answer in kilojoules per mole to one decimal place. ΔHrxn∘= kJ/mol Part B Consider the reaction Ca(OH)2(s)→CaO(s)+H2O(l) with enthalpy of reaction ΔHrxn∘=65.2kJ/mol What is the enthalpy of formation of CaO(s)? Express your answer in kilojoules per mole to one decimal place. ± Enthalpy Enthalpy H is a measure of the energy content of a system at constant pressure. Chemical reactions involve changes in enthalpy, ΔH, which can be measured...