part 1 sodium and rubidium have the same properties with potassium. this is because sodium, potassium, and rubidium are in the same column that is they are all in group one of periodic table. all are alkali metals hence have the same properties.
part two
magnesium have 12 neutrons, 12 protons and 12 electrons
from periodic table the magnesium is atomic number 12 and has a mass number of 24.305
The atomic number is equal to number of protons that is 12
protons value is the same as electron value hence the number of electron are also 12
mass number=protons +neutrons hence
Neutron=mass number-number of protons that is 24.035-12=12 which is equal to 12 neutrons
Answer:
Total Ionic equation:
H₂²⁺(aq) + O₂²⁻(aq) + Mg²⁺(aq) + SO₃²⁻(aq) → Mg²⁺(aq)+SO²⁻₄(aq) + H₂O(l)
Explanation:
Chemical equation:
H₂O₂(aq) + MgSO₃(aq) → MgSO₄(aq) + H₂O(l)
Balanced chemical equation:
H₂O₂(aq) + MgSO₃(aq) → MgSO₄(aq) + H₂O(l)
Total Ionic equation:
H₂²⁺(aq) + O₂²⁻(aq) + Mg²⁺(aq) + SO₃²⁻(aq) → Mg²⁺(aq)+SO²⁻₄(aq) + H₂O(l)
Water can not split into ions because it is present is liquid form.
The method used to separate oxygen from mercury oxide is by strong heating. In the lab mercury oxide is placed in strong glass test tube and strong heat applied to the test tube. Mercury oxide then undergoes a decomposition reaction to produce mecury and oxygen.
Antoine Lavoisier , the father of modern chemistry is the one credited as having proved the decomposition of mercuric oxide by heating, and that the result was production of mercury and oxygen.
A decomposition reaction is a reaction in which a compound breaks down into two or more simpler substances.
Answer: Both (a) and (b)
Explanation:
Lipids are heterogeneous group of compounds of biochemical importance. Lipids may be defined as compounds which are relatively insoluble in water and are concentrated of energy source.
Fatty acids are aliphatic carboxylic acids and have the general formula, R-COOH, where COOH is the functional group and R group are hydrocarbon chain.
The structure of fat contains lot of C-C and C-H bonds and there are lot of calories, and therefore energy is packed into thier chemical structure.
Despite fat contains glycerol polar group, the long chains of hydrocarbon which are non polar makes fats insoluble in water.
