Answer is: concentration of hydronium ions is 8.13·10⁻⁴ M.<span>
c(HNO</span>₂) = 0.055 M.<span>
c(NaNO</span>₂) = 0.10 M.<span>
Ka(HNO</span>₂) = 4.5·10⁻⁴.<span>
This is buffer solution, so use Henderson–Hasselbalch equation:
pH = pKa + log(c(NaNO</span>₂) ÷ c(HNO₂)).<span>
pH = -log(4.5·10</span>⁻⁴) + log(0.055 M ÷ 0.10 M).<span>
pH = 3.35 - 0.26.
pH = 3.09.
</span>[H₃O⁺<span>] = 10</span>∧(-3.09).
[H₃O⁺] = 8.13·10⁻⁴ M.
Answer:
Caribe, Bermudas, Centroamérica incluyendo el este de México, las costas oriental y del Golfo de los Estados Unidos, y el este de Canadá.
Explanation:
oxygen and silicon I believe
If it's your first encounter with chemistry, your instructor will want you to learn how to use the periodic table<span> to find the atomic mass (</span>atomic weight<span>) of an element. This number usually is given below an element's symbol. Look for the decimal number, which is a </span>weighted average of the atomic masses<span> of all the </span>natural isotopes<span> of an element. </span>
Answer:
In order of decreasing miscibility
C₉H₂₀ (nonane)→C₂H₅F (fluoroethane)→C₂H₅Cl (chloroethane)→H₂O (water)
Explanation:
The solubility of a solid is a measure of its ability to dissolve in a liquid while for liquids, the miscibility is a measure of thhe liquid to mix with anoyjer liquid resulting in a soltion which can hold any amount of either liquids. Immiscible liquids are those that are not soluble or have very limited solibility with each other.
C₉H₂₀ (nonane)→C₂H₅F (fluoroethane)→C₂H₅Cl (chloroethane)→H₂O (water)
In the order of decreasing miscibility as like dissolve like, ability to dissociate and polar and organic characteristics are considered
