Answer: An atom can be considered unstable in one of two ways. If it picks up or loses an electron, it becomes electrically charged and highly reactive. Such electrically charged atoms are known as ions. Instability can also occur in the nucleus when the number of protons and neutrons is unbalanced.
Explanation:
Answer:
Mass
Explanation:
Physical properties of substance are classified as Intensive property and Extensive property.
Intensive Property:
A physical property whose value is independent of the mass of a substance for which it is measured.
Examples:
i) Melting / Boiling Points
ii) Temperature
iii) Color
iv) Density
v) Pressure
Extensive Property:
A physical property whose value is dependent on the mass of a substance for which it is measured.
Examples:
i) Amount of Substance
ii) Mass
iii) Volume
iv) Enthalpy
v) Entropy
Answer;
-Aerobic respiration;
Explanation;
-Aerobic respiration is the process in living things that evolved as oxygen levels increased in earth's atmosphere. Aerobic respiration is the process in which cellular energy is produced in the presence of oxygen. Cells breakdown nutrients, such as glucose, in the mitochondria to produce energy in the form of ATP which can be used by the cells.
Answer:
Li₃N ( Lithium nitride)
The law of conservation of mass states that in a chemical reaction, the total mass of reactants is equal to the total mass of products.
mass of reactants there = 21.5 g if Li + 21.3 g of Nitrogen
= 42.8 g
hence the mass maximum mass of Li3N produced is 42.8 g
If we write the equation of the reaction that will take place, it is:
2HNO₃ + Na₂CO₃ → 2NaNO₃ + H₂CO3
The molar ratio of 2HNO₃ : Na₂CO₃ = 1 : 2
Therefore, we can set up the equation:
M₁V₁ = 2M₂V₂
Where the left side of the equation has the molarity and volume of HNO₃ and the right side has the molarity and concentration of Na₂CO₃. Substituting:
M₁ = (2 x 0.108 x 35.7) / 25
M₁ = 0.308 M
