The substances that are formed by a chemical change are called the product.
While the state of matter in which a material has a definite volume and a definite shape is the solid.
In a chemical reaction, the reactant on the left hand side undergoes a chemical change and gives product.
While in a solid state, a material has a definite volume and a definite shape is the solid.
C. Answer correct I think…
Answer:
0,040 M
Explanation:
The global reaction of the problem is:
Al(OH) (s) + OH⁻ ⇄ Al(OH)₂⁻(aq) K= 40
The equation of equilibrium is:
K = ![\frac{[Al(OH)_{2} ^-]}{[Al(OH)][OH^-]}](https://tex.z-dn.net/?f=%5Cfrac%7B%5BAl%28OH%29_%7B2%7D%20%5E-%5D%7D%7B%5BAl%28OH%29%5D%5BOH%5E-%5D%7D)
The concentration of OH⁻ is:
pOH = 14 - pH = <em>3</em>
pOH = -log [OH⁻]
[OH⁻] = 1x10⁻³
Thus:
40 = ![\frac{[Al(OH)_{2} ^-]}{[Al(OH)][1x10^{-3}]}](https://tex.z-dn.net/?f=%5Cfrac%7B%5BAl%28OH%29_%7B2%7D%20%5E-%5D%7D%7B%5BAl%28OH%29%5D%5B1x10%5E%7B-3%7D%5D%7D)
<em>0,04M = ![\frac{[Al(OH)_{2} ^-]}{[Al(OH)]}](https://tex.z-dn.net/?f=%5Cfrac%7B%5BAl%28OH%29_%7B2%7D%20%5E-%5D%7D%7B%5BAl%28OH%29%5D%7D)
</em>
This means that 0,04 M are the number of moles that the solvent can dissolve in 1L, in other words, solubility.
I hope it helps!
Answer:
atomic mass numbers? 23.23.233232323
Explanation:
Answer:
The correct answer is rough, white tents
Explanation:
The options that have black tents are wrong because black materials absorbs heat, hence cannot protect the family from the heat from the sun during the reunion.
Also light/heat energy easily penetrate smooth surfaces as against rough surfaces. From this explanation, rough, white tents are better for the reunion as they will protect the family from the heat radiated from the sun.
