The mass of on mole of carbon atom.
12 g
56g
2g
100g
The simplest whole number formula of a compound is:
molecular formula
empirical formula
atomic formula
chemical formula
The amount of substance produced in an electrolytic reaction depends firstly on:
Cathode
Anode
Temperature
Quantity of electricity
The mass of one hydrogen atom is:
1. 6 ×-10-31
1.7 × 10-24
6. 1 × 1023
2.1 × 10-28
A solution whose concentration is known precisely.
Acidic solution
Basic solution
Standard solution
Electrolytic solution
The change on one mole of electrons is:
IC
96500 coulombs
600 c
2c
The relative atomic mass of water is:
2
58.5
18
The molecular formula of phosphorous oxide.
PO5
P2O6
P4O10
P3O4
Hydrated copper sulphate crystal is:
CaSO4 .H2O
CaSO4. 4H2O
CuSO4.5H2O
CuSO4
The relative atomic mass (Ar) of chlorine is:
64
12
35.5
27