3. Chemical Reactions

Which of the following is the correctly balanced chemical equation for the reaction between hydrogen gas and oxygen gas to form water?

When balancing a chemical equation, which of the following must be true?

Which of the following is the correctly balanced chemical equation for the reaction: io3−(aq) + h2so3(aq) → i2(aq) + so42−(aq)?

What is the correct coefficient for O_2 needed to balance the chemical equation: C_3H_8 + O_2 → 3CO_2 + 4H_2O?

Which of the following chemical equations is NOT correctly balanced?

In the process of balancing chemical equations, which numbers must remain unchanged?

When the following chemical equation is balanced, what are the correct coefficients for Sb, O_2, and Sb_4O_6?__ Sb + __ O_2 → __ Sb_4O_6

Which of the following chemical equations is NOT correctly balanced?

Which of the following is the correctly balanced chemical equation for the formation of sulfur trioxide from sulfur dioxide and oxygen?

Which of the following statements about balancing chemical equations is false?

When calcium reacts with fluorine in a synthesis reaction, which compound is produced? Complete the equation: Ca + F_2 → ________

Is the following chemical equation balanced? 2Na + 2H2O → 2NaOH + H2

Given the following unbalanced half-reactions:1) Fe^{2+} → Fe^{3+} + e^-2) MnO_4^- + 8H^+ + 5e^- → Mn^{2+} + 4H_2OWhich of the following is the correctly balanced overall reaction?

Why are coefficients important when balancing chemical equations?

Which of the following is the correctly balanced equation for the combustion of methane, and what type of reaction is it?