Answer:
Explanation:
When an electron moves from a lower energy level to a higher energy level, energy is absorbed by the atom. When an electron moves from a higher to a lower energy level, energy is released and photon is emitted.
this emitted photon is depicted as a small wave-packet being expelled by the atom in a well-defined direction.
Answer:
H-1 solid Ne-10 Liquid
He-2 Solid Na-11 Liquid
Li-3 Liquid to Gas Mg-12 Gas
Be-4 Gas Al-13 Gas
B-5 Gas Si-14 Gas
C-6 Gas P-15 Liquid to Gas
N-7 Liquid S-16 Liquid to Gas
O-8 Liquid CI-17 Liquid
F-9 Liquid Ar-18 Liquid
>>>>>>>>>>>>>> K-19 Gas
Ca-20 Gas
<h3>Answer:</h3>
H₂O
Explanation:
According to Arrhenius Concept of Acid and Base, "Acid is any specie which when dissolved in water ionizes to produce H⁺ ions".
Examples:
HCl → H⁺ + Cl⁻
H₂SO₄ → 2 H⁺ + SO₄²⁻
While, "Bases are those species which when dissolved in water produces Hydroxyl Ions (OH⁻)".
Examples:
NaOH → Na⁺ + OH⁻
Mg(OH)₂ → Mg²⁺ + 2 OH⁻
Given Options:
CH₃OH:
Methanol when dissolved in water does not dissociate as follow,
CH₃OH → H₃C⁺ + OH⁻
Hence, it does not behave as Arrhenius Base.
CH₃COOH:
Acetic acid when dissolved in water produces H⁺ ions and Acetate ions i.e.
CH₃COOH → CH₃COO⁻ + H⁺
Therefore, it can act as Arrhenius Acid instead of Arrhenius Base.
H₂O:
Water when dissolved in water dissociates as,
H₂O → H⁺ + OH⁻
As it is producing both H⁺ and OH⁻ ions therefore, it can act as both Arrhenius Base and Arrhenius Acid.
H₂NNH₂:
Hydrazine when dissolved in water can neither produce OH⁻ ions nor H⁺ ions hence, it is neither Arrhenius Base nor Arrhenius Acid,
Answer:
Mass of glucose = 180.156 g
Explanation:
Chemical equation:
6CO₂ + 6H₂O + energy → C₆H₁₂O₆ + 6O₂
Number of moles of water = 6 mole
Molar ratio:
Mole ratio of water and glucose:
H₂O : C₆H₁₂O₆
6 : 1
Mass of glucose produced by 6 mole of water:
Mass of glucose = number of moles × molar mass
Mass of glucose = 1 mol × 180.156 g/mol
Mass of glucose = 180.156 g