1) What is 6.023 x 10 ^23 known as? a) Schroedinger's number b) Planck's constant c) Avogadro's number d) Heisenberg's uncertainty principle. 2) What is the Ar of Oxygen? a) 32g / mol b) 16 g c) 48 g / mol d) 8 g / mol 3) What is the Mr of CO2? a) 20 g / mol b) 44 g / mol c) 98 g / mol d) 12 g / mol 4) How many moles are there in 34g of Ammonia? a) 3.5 b) 17 c) 2 d) 4 5) What is the mass of 5 moles of Carbon? a) 30g b) 60g c) 120g d) 1.2g

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