Indicate the total number of (a) p electrons in n (z=7)
(b) s electrons in Si (z=14)
(c) 3d electrons in S (z=16)

Can someone me with questions 12 and 13 plz.

Which of these is not an example of chemical weathering? a. iron-rich mineral rusting b. feldspar turning into clay c. limestone reacting with acid d. granite breaking up into sand

What substance has a mass of 9.5g and volume of 2.1cm^3