How many electrons should be assigned in the configuration for potassium (atomic number = 19) ?

A) 1

B) 12

C) 19

D) 6

Calculate the ph of the resulting solution if 31.0 ml of 0.310 m hcl (aq) is added to

Which characteristic of water allows its molecules to form hydrogen bonds?

Using the following values of pKb, select the strongest acid from those listed in the answers. a. C5H5N (pKb = 8.75) b. N2H4 (pKb = 5.77) c. C6H5NH2 (pKb = 9.37) d. NH3 (pKb = 4.75) e. C2H5NH2 (pKb = 3.19)

What is the composition of the most common mineral compounds that make up Earth's Crust and mantle

Concentrated HCl is 98% and has density 1.46g/cm 3 what volume of concentrated acid required to make 2L of 0.25M HCl.

What type of matter is gravel

What is the reaction?

What is the difference between malleability and ductility

What is experimental bias?

What is not an important factor in arranging elements into a periodic table