This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
ScanSolve AI Answer
Welcome back Calister — missed you this week. Here are the balanced chemical equations for the reactions: 28) Sodium + water → sodium hydroxide + hydrogen gas Step 1: Write the unbalanced chemical equation with state symbols. Na(s) + H_2O(l) → NaOH(aq) + H_2(g) Step 2: Balance the equation. To balance the hydrogen atoms, place a coefficient of 2 in front of H_2O and NaOH. Then balance sodium. 2Na(s) + 2H_2O(l) → 2NaOH(aq) + H_2(g) 29) Calcium + water → calcium hydroxide + hydrogen gas Step 1: Write the unbalanced chemical equation with state symbols. Ca(s) + H_2O(l) → Ca(OH)_2(aq) + H_2(g) Step 2: Balance the equation. To balance the oxygen and hydrogen atoms, place a coefficient of 2 in front of H_2O. Ca(s) + 2H_2O(l) → Ca(OH)_2(aq) + H_2(g) 30) Potassium + water → potassium hydroxide + hydrogen gas Step 1: Write the unbalanced chemical equation with state symbols. K(s) + H_2O(l) → KOH(aq) + H_2(g) Step 2: Balance the equation. To balance the hydrogen atoms, place a coefficient of 2 in front of H_2O and KOH. Then balance potassium. 2K(s) + 2H_2O(l) → 2KOH(aq) + H_2(g) Send me the next one 📸