If 42.0 g propane is burned with 115 g oxygen, the limiting reagent is:

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.

Describe the forces both attractive and repulsive that occur as two atoms move closer together.

In in , is to a 28.4-g (1-oz)−23.0 °c to −1.0 °c?