Example for pure substance is
Hydrogen
Water
Sugar
Ammonia
The total number of atoms present in 7NH3 molecule is
7
10
21
28
Find the number of atoms in C12H22O11
12
22
11
45
How many oxygen atoms are present in 2Na2SO4.
4
2
6
8
Atoms which show the same properties are called as
Molecules
Mixtures
Elements
Compounds
Phosphorus is ___ molecules.
mono atomic
diatomic
triatomic
polyatomic
Natrium is the Latin name of
Nitrogen
Sodium
Tin
Balance the equation and find the value of a, b, c in the following equation:a N2 + b H2 → c NH3
1, 2, 3
1, 3, 2
3, 2, 1
3, 1, 2
In the reaction, NaOH + H2 SO4 → Na2SO4 +H2O the number of atoms of Hydrogen in reactant side are (after balancing the equation).
1
3
