Atomic Theory and Structure The Mole (previous version): Its History and Use by Anthony Carpi, Ph.D. Reading Quiz Resources The mole is also referred to as: a.Avogadro's number b.Bohr's number c.Cannizzaro's number d.Loschmidt's number What number does the mole represent? a.12 b.6 x 1022 c.6.02 x 1023 d.60.2 x 1023 The concept of the mole says that: a.in a defined mass of an element there is a precise number of atoms b.in a defined mass of an element there is a precise number of compounds c.in the atomic weight of an element there is one atom d.none of the choices How many silicon atoms are there in 28.09 g of Si? a.1 b.1.204 x 1024 c.28.09 d.6.02 x 1023 How do you calculate the molecular weight of a compound? a.by dividing the weight of atoms of the compound b.by summing the atomic weights of elements in that compound c.by multiplying the weight of atoms of the compound d.by subtracting the weight of atoms of the compound What is the molecular weight of CO2? a.28.01 b.32.00 c.44.01 d.72.08 Which one of the following has the same number of moles as 28.02 g of nitrogen? a.19.00g of potassium b.23.00g of potassium c.24.01g of magnesium d.36.04g of water Score Quiz Post Tweet Send Top