When a scientist conducts an investigation, which of the following is the first thing he or she should do? a. design the experiment b. make hypothesis c. identify the problem d. form conclusions

What are the first three quantum numbers for the electrons located in subshell 2s?

Is heavenly controller dating someone?

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.