The movement of the liquid in a thermometer shows changes in temperature. An increase in temperature indicates the molecules in
the liquid

1) moved slower and closer together
2) move faster and spread farther apart
3) contracted in size when heated
4) expanded in size when heated

0.2348 grams of pbcl2 used to form 44.0 ml of solution.

What effect does a decrease in temperature have on the overall rate of a chemical reaction? a decrease in temperature decreases . the reaction rate will

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.