(a) How many atoms are present in 0 11 mol argon (symbol Ar) (b) How many moles are present in 2 67 10 23 molecules of N 2 H 4 Strategy In both parts, the unit conversions come from the definition of the mole 1 mol Ar 6 022 10 23 atoms Ar, and 1 mol N 2 H 4 6 022 10 23 molecules of N 2 H 4 ...

a We know that 1 mol Ar 6022 10 23 atoms argon use this equality to calculate the number of a ...

(a) How many atoms are present in 0.11 mol argon (symbol Ar)? (b) How many moles are...

Question:

(a) How many atoms are present in 0.11 mol argon (symbol Ar)?
(b) How many moles are present in 2.67 × 10²³ molecules of N₂H₄? Strategy In both parts, the unit conversions come from the definition of the mole: 1 mol Ar = 6.022 × 10²³ atoms Ar, and 1 mol N₂H₄ = 6.022 × 10²³ molecules of N₂H₄.