Who good at this n kno the answer hmu According to the periodic table, how many neutrons are in potassium atom that has an atomic mass of 41?

a 19

b 20

c 22

d 39

Calculate the molarity of 48.0 ml of 6.00 m h2so4 diluted to 0.250 l .

An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have

Which of the following represents the ester functional group? a. -coo- b. -cho c. -cooh d. c=o