Answer:
H₂O Gained Electron.
H₂O is <span>Bronsted-Lowry Base.
Explanation:
Due to amphoteric nature of water it can act as acid when reacted with strong base, also it can act as base when reacted with strong acid.
In given statement water is treated with strong acid hence it is acting as Bronsted-Lowery Base, as it accepting H</span>⁺. So those species which accepts proton are called as Bronsted-Lowry Base and those which donated proton are called as <span>Bronsted-Lowry Acid.
</span>
H₂O + H⁺ → H₃O⁺
Answer:
pH = 2.66
Explanation:
weak acid:
∴ Ka = 5 E-5 M = [H+][A-]/[HA]
∴ [HA] = 0.10 M - [A-]
∴ [H+] = [A-]
⇒ Ka = [H+]²/(0.10 - [H+])
⇒ [H+]² + 5 E-5[H+] - 5 E-6 = 0
⇒ [H+] = 2.211 E-3 M
⇒ pH = - Log [H+]
⇒ pH = 2.6553
Answer:
Dmitri Mendeleev
Explanation:
Dmitri Mendeleev published the first recognizable periodic table in 1869, developed mainly to illustrate periodic trends of the then-known elements. He also predicted some properties of unidentified elements that were expected to fill gaps within the table. Most of his forecasts proved to be correct
Answer
6.9 x 10¹²Hz
Explanation:
Given parameters:
Wavelength of the wave = 4.35 x 10⁻⁵m
Unknown:
Frequency of the wave = ?
Solution:
The speed of a wave is related to the wavelength and frequency using the expression below;
C = Fλ
C is the speed of light = 3 x 10⁸m/s
F is the frequency
λ is the wavelength
Insert the given parameters and solve;
3 x 10⁸ = F x 4.35 x 10⁻⁵
F = = 6.9 x 10¹²Hz
To convert this first lets see how many meters are in 1 km.
1 km = 1000 meters
Now lets multiply:-
2.7 × 1000 = 2700
So, 2.7 km = 2700 meters.
Hope I helped ya!!