85.0 mL of 0.25 M HF (Ka = 7.2 x 10-4)is titrated with 5.0 mL of 0.80 M NaOH. Calculate the pH at this point in the titration.
Your

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

Compare and contrast physical changes with chemical changes.

What does the mass of 0.7891 mol of ferric oxide (fe2o3)