For a given peak intensity of radiation of a star that occurs at a wavelength of 2 nanometers, this is located at the spectral band of an X-ray. An X-ray's wavelength typically goes from 0.1 nano meters to 10 nano meters. Given that, the wavelength of the star fits perfectly into the range of an X-ray
Good grief, this stuff got caught in a black hole somewhere. It is terribly dense.
1 mL = 1 cc under normal conditions.
d = mass / volume
m = 20 kg
v = 5 mL
d = 20kg / 5 mL
d = 4 kg / mL
d = 4 kg / cc
A <<<<answer
The atomic number is the numbers of protons
Kw = 1.219x10⁻¹⁴
kw = [H⁺] x [OH⁻]
in water [H⁺] = [OH⁻] therefore:
[H⁺] = √ kw
[H⁺] = √ <span>1.219x10⁻¹⁴
[H</span>⁺] = 1.104x10⁻⁷
pH = - log [H⁺]
pH = - log [ <span>1.104x10⁻⁷ ]
pH = 6.95
hope this helps!</span>
Answer:
The mismatched pair is : D. phenolics-peracetic acid
Explanation:
A. sodium hypochlorite-chlorine: Correct pair
Sodium hypochlorite solution (NaOCl) is made from the reaction of chlorine and sodium hydroxide solution.
B. formalin-formaldehyde : Correct pair
The formalin solution is a 37% aqueous solution of formaldehyde.
C. iodophor-iodine : Correct pair
Iodophor, a combination of iodine and solubilizing agent. When diluted with water, iodophor releases free iodine.
D. phenolics-peracetic acid : wrong pair
Phenolics is a noun used for phenols, aromatic hydrocarbons with a hydroxyl group. Whereas, peracetic acid or peroxyacetic acid is an organic peroxide.
E. benzalkonium chloride-quaternary ammonium compound: Correct pair
Benzalkonium chloride is a quaternary ammonium organic salt, used as a cationic surfactant.
