1. what is the SI unit for measurement of number of particles in substance? A.kilogram b.mole c.ampere d.kelvin
2.which of the following is NOT a representative particle? a.molecule b.photon c.anion d.atom
3.aspirin has a chemical formula of C9H8O4. what is the mass of 0.40 mol of aspirin? A.45g B.72g C.160g D.10.8g
4.how many particles of any substance is present in one mole? A.6.02x10.22 particles B.6.02x10.23 particles C.6.02x10.24 particles D.6.02x10.25 particles
5.if one dozen of egg is 12 pieces of eggs, how many pieces of paper are there in one ream? A.100pieces B.250pieces C.350pieces D.500pieces
6.what is the molar mass of AuC1 3? A.96g B.103g C.303g D.626.5g
7.what is the equivalent of avogadro's number of representative particles. A.1 liter B.2 liter C.1 mole D.2 mole
8.what is the equivalent of of one mole of a substance? A.molar mass B.atomic mass C.electron mass D.neutron mass
9.given one mole of AuC1 3, what is its equivalent mass? A.303g B.130g C.231.5g D.85g
10.how many atoms of hydrogen are there in 2 moles of NH3? A,5x10 23 atoms B.3.10 23 atoms C.3.61x10 24 atoms
