21. A chemistry teacher needed 200 mL of 1.5 M Na S2O3, (molar mass 158 g/mole). How many grams should the teacher measure out?

What is an example of a physical property?

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 moles are in 7.2 x 10^23 carbon molecules?