Answer:
<h3>D. it combusts</h3>
Explanation:
Combustion is when fuel reacts with oxygen to release heat energy. Combustion can be slow or fast depending on the amount of oxygen available. Combustion that results in a flame is very fast and is called burning. Combustion can only occur between gases.
Answer:
Explanation:
The addition of AgNO3 to the system Cl⁻ react with result into the formation a precipitate of AgNO3, as such the reactant concentration decreases.
Suppose the concentration of a given substance is present in an equilibrium system is changed without a change in any of the other conditions, then, by le chatelier's principle, the position of equilibrium will move to decrease the concentration of the added substances. In order to relieve this constraint, the equilibrium will shift to the right favouring the forward reaction.
A covalent bond is formed by D) Gaining or losing two or more electrons by an atom.
Hope this helps!
Answer:
The respective figure with label and targets is missing but yet the definitions and stability considerations can help you, so I explain them below.
Explanation:
Remember these definitions:
- Atomic number = number of protons
- Mass number = number of protons + number of neutrons
Hence,
- When one proton is added, both atomic number and mass number increase by one.
- When one neutron is added, atomic number remains the same, but mass number increase.
The neutrons provide stability to the nucleus of the atom by compensating the electrostatic repulsion force that arise from the fact that positive charges are forced to be so close in the nucleus.
Since the more protons are added to the nucleus the stronger the repulsive force inside the nucleus are, as the atomic number increase the neutron number must increase too.
For the ligther elements (lower atomic and mass numbers) the ratio of neutrons to protons is very close to 1.
For heavier elements (greater atomic and mass numbers) the ratio of neutrons to protons increase: proportionally more neutrons are needed to provide stability to the nucleus.
Sulfer and fluorine but you need special equipment to get it