An acid‑base neutralization reaction releases energy. (H3O+)+(OH−)⟶(2H2O) EΔ=−55.8 kJ

Calculate the energy change when 25.0 mL of 0.100 M HCl reacts with excess aqueous NaOH.

Which real-world scenarios below represent physical and chemical changes? -running a car -exploding fireworks -mixing water and powdered drink mix -combining oil and vinegar to make salad dressing -taking aspirin for a headache -diluting bleach with water-digesting dinner-spreading peanut butter on bread

Using a value of ksp = 1.8 x 10-2 for the reaction pbcl2 pb+2(aq) + 2cl -(aq). if the value of ksp was determined to be only 1.2 x 10-2: too much solid has dissolved. additional precipitate is forming. the solution is unsaturated. the ions are now combining to reduce their concentrations.

Which of the following words describe the reality that the universe looks the same from various perspective