0.000 s
Revise smart, understand Better
Select Lessons (12)
CHEMISTRY IN SOCIETY: Fertilizers
ENVIRONMENTAL EDUCATION: Chemistry In Society - Extraction Of Metals
MATTER - PROPERTIES AND TRANSFORMATION: Chemistry Of Elements - Alkali metals and alkaline earth metals
MATTER - PROPERTIES AND TRANSFORMATION: Chemistry Of Elements - Identification Of Ions
MATTER - PROPERTIES AND TRANSFORMATION: Chemistry Of Elements - Salts
MATTER - PROPERTIES AND TRANSFORMATION: Chemistry Of Elements - Transition metals
MATTER - PROPERTIES AND TRANSFORMATION: Principles Of Chemistry - Formulae, Moles And Equations
MATTER: PROPERTIES AND TRANSFORMATION: Rates Of Reaction
MATTER: PROPERTIES AND TRANSFORMATION: Reversible Reactions
PRINCIPLES OF CHEMISTRY: Electrochemistry
PRINCIPLES OF CHEMISTRY: Gaseous State
5/96 MCQs for:
MATTER - PROPERTIES AND TRANSFORMATION: Principles Of Chemistry - Formulae, Moles And Equations
What is the percentage by mass of water of crystallization in copper (II) sulphate pentahydrate?
57.6%.
36%.
50%.
25.6%.
'Molecular mass' (not relative molecular mass) is expressed in what units?
Moles (mol).
Atomic mass units (amu) or Daltons (Da).
Litres (L).
Grams (g).
How many moles of carbon dioxide molecules are there in 0.12 g of carbon dioxide gas?
0.027 mol
0.12 mol
0.0027 mol
0.03 mol
What is the definition of a mole in chemistry?
The number of particles in 1 gram of a substance.
The volume occupied by 1 gram of gas.
The amount of substance that contains as many elementary entities as there are atoms in 12 grams of carbon-12.
The mass of an atom.
What is the RMM or relative formula mass of calcium nitrate, Ca(NO
3
)
2
70
102
136
164
