The products have the same mass as the reactants
H2-element
HCl-compound
Na-element
Al2O3-compound
H2O-compound
It represents a chemical change
Answer:
See explanation
Explanation:
The electron configuration of an atom means a detailed arrangement of the electrons in the atom in orbitals. It normally begins from the least energetic orbitals to the most energetic orbital.
For each of the elements, their electronic configuration in terms of the nearest noble gas is shown below;
P - [Ne] 3s2 3p3
I- [Kr] 4d10 5s2 5p5
Pb- [Xe] 4f14 5d10 6s2 6p2
F- [He] 2s2 2p5
Answer: -
5 : 1 : 3
Explanation: -
Mass of CO₂ = 2.2 g
Molar mass of CO₂ = 44 g / mol
Number of moles of CO₂ = 
= 
= 0.05 mol
Number of atoms of nitrogen = 6.02 x 10²¹
Number of moles of nitrogen = 
= 
= 0.01 mol
0.03 gram atom of sulphur means 0.03 moles of sulphur.
Thus the mole ratio of CO₂ : N : S = 0.05 : 0.01 : 0.03
= 5 : 1 : 3