Julio hit a baseball. what caused the ball to change direction

Abeaker with 2.00×102 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid and conjugate base in this buffer is 0.100 m. a student adds 4.70 ml of a 0.360 m hcl solution to the beaker. how much will the ph change? the pka of acetic acid is 4.740.

How many neutrons does an element have if its atomic number is 50 and its mass number is 166

How many moles of sulfur dioxide are in 2.26 × 10^33 sulfur dioxide molecules?