3. Chemical Reactions

Which of the following is the correctly balanced chemical equation for the combustion of propane (C_3H_8)?

Why must chemical equations be balanced?

When potassium hydroxide (KOH) reacts with hydrochloric acid (HCl), which of the following represents the correct products of the reaction?

Which of the following correctly balances the half-reaction for the reduction of nitrate ion in acidic solution, including hydrogen atoms and charges?NO_3^- → NO_2

Which of the following is the correctly balanced chemical equation for the reaction of S_8 with O_2 to form SO_2?

Which of the following is the correctly balanced chemical equation, including phases, for the reaction of aqueous Pb(ClO3)2 with aqueous NaI?

Which of the following is the correctly balanced chemical equation for the decomposition of dinitrogen trioxide (N2O3) into nitrogen gas and oxygen gas?

Which of the following correctly balances the chemical equation: CaH2 + H2O → Ca(OH)2 + H2?

Which of the following chemical equations is balanced?

Which of the following is the correct nuclear equation for the fusion of hydrogen-3 (tritium) with hydrogen-1 (protium) to form helium-4?

Which statement best describes the equation CaCO3 + 2HCl → CaCl2 + CO2 + H2O?

Which of the following is the correctly balanced chemical equation for the combustion of magnesium?

Which of the following is the balanced chemical equation for photosynthesis?

Which of the following represents the balanced chemical equation for the cell diagram: Al(s) | Al^{3+}(aq) || Cd^{2+}(aq) | Cd(s)?

Which of the following is the correctly balanced chemical equation for the reaction: 2CH4(g) → C2H6(g) + H2(g)?