Unit 9 - Quantative Chemistry

Question 1

What is atomicity

Answer 1

The number of atoms in a molecule

Question 2

Number of atoms to moles of atoms

Answer 2

Divide the number of atoms by 6X10[23] to get the moles of atoms

Question 3

Moles of atoms to mass of atoms

Answer 3

Times the moles by the Ar (relative atomic mass) to get the mass of atoms (in grams)

Question 4

What is a mole

Answer 4

A mole is the amount of substance containing the Avogrado number (6 X 10[23]) of particles

Question 5

Molar volume of gas at rtp

Answer 5

1 mole of gas is 24dm³ or 24000 cm³

Question 6

Avogadros law

Answer 6

Equal volumes of all gases, under the same conditions of temperature and pressure, contain equal numbers of molecules (or equal numbers of moles of molecules)

Question 7

Number of moles of substance in Vcm³ of solution

Answer 7

(V x molar concentration) / 1000