1. that mass
2. a particle that has the same properties at every point
Answer:

Explanation:
4HCl + O₂ ⇌ 2Cl₂ + 2H₂O
E/mol·L⁻¹: 0.80 0.20 3.0 3.0
![K_{\text{eq}} = \dfrac{\text{[Cl$_{2}$]$^{2}$[H$_{2}$O]$^{2}$}}{\text{[HCl]$^{4}$[O$_{2}$]}} = \dfrac{3.0^{2}\times3.0^{2}}{0.80^{4}\times 0.20} = \mathbf{990}\\\\\text{The $K_{\text{eq}}$ value is $\large \boxed{\mathbf{990}}$}](https://tex.z-dn.net/?f=K_%7B%5Ctext%7Beq%7D%7D%20%3D%20%5Cdfrac%7B%5Ctext%7B%5BCl%24_%7B2%7D%24%5D%24%5E%7B2%7D%24%5BH%24_%7B2%7D%24O%5D%24%5E%7B2%7D%24%7D%7D%7B%5Ctext%7B%5BHCl%5D%24%5E%7B4%7D%24%5BO%24_%7B2%7D%24%5D%7D%7D%20%3D%20%5Cdfrac%7B3.0%5E%7B2%7D%5Ctimes3.0%5E%7B2%7D%7D%7B0.80%5E%7B4%7D%5Ctimes%200.20%7D%20%3D%20%5Cmathbf%7B990%7D%5C%5C%5C%5C%5Ctext%7BThe%20%24K_%7B%5Ctext%7Beq%7D%7D%24%20value%20is%20%24%5Clarge%20%5Cboxed%7B%5Cmathbf%7B990%7D%7D%24%7D)
Answer:
See explanation
Explanation:
Chemical reactions are also referred to as chemical change. A chemical change often leads to the formation of new substances and is not easily reversible.
A chemical reaction may be accompanied by the emission of heat and light, formation of a precipitate, evolution of gas, or a color change.
These observable physical effects may tell us weather a chemical reaction has taken place or not so we have to observe the system closely for any of these effects stated above.
if people like the smell of burning wood, then they would not like the smell of gasoline
Explanation:
it's a supposition without any real truth to back it up
Answer:
2
Explanation:
Covalent bonding occurs when pairs of electrons are shared by atoms. Atoms will covalently bond with other atoms in order to gain more stability, which is gained by forming a full electron shell. By sharing their outer most (valence) electrons, atoms can fill up their outer electron shell and gain stability.