Describe how the px. py, and pz orbitals are different

Apiece of metal with a length of 1.42 cm was measured using four different instruments. which of the following measurements is the most accurate?

How many moles are in 43.9 l of oxygen

Suppose you mix one mole of sulfuric acid (h2so4) with 1 mole of sodium hydroxide(naoh). why does the ph of the solution remain below 7? ( explain so i can get better understanding! )