5. Which atom in the ground state has only 2 electrons in the 3p sublevel (orbital)?
A) Potassium
B) Oxygen
C) Phosphorus
D) silicon
???

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.

Will mark as brainliest ! how many grams of iron metal do you expect to be produced when 245 grams of an 80.5 percent by mass iron (ii) nitrate solution react with excess aluminum metal? show all work needed to solve this problem!

Complete the following radioactive decay problem. tan+on-? c+th