How many moles of water h2o contain 2.0 x 10^22 molecules of water? express the quantity in moles to two significant figures

1 mol H₂O 6.02x10²³ molecules
  ? mol H₂O 2.0x10²² molecules

Number of moles = Number of molecules / Avogadro's number

moles = 2.0x10²² * 1 / 6.02x10²³

= 2.0x10²² / 6.02x10²³

= 0.3322 moles

hope this helps!

Chewy,wrapped,not in all white,the wrapper is clear

Ans. : frostbite is when exposure to cold temperatures causes freezing to the skin or other tissues. it most commonly affects the hands, feet, and face. the longer areas are exposed to cold, typically the worse the frostbite. the water temperature used for rewarming a frostbitten part should be : (102 -105) f degrees.