1 mole of any gas occupies a volume of 22.4L, therefore there are 3.022×10^24 molecules of oxygen gas in 113.97 L
Answer:
9.6 t
Explanation:
You want to convert tablets ⟶ tons
I would use the conversion sequence:
tablets ⟶ milligrams ⟶ grams ⟶ kilograms ⟶ pounds ⟶ tons
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1 tablet = 500 mg Convert tablets to milligrams
Milligrams = 85 × 10⁶ × 500/1
Milligrams = 4.25 × 10¹⁰ mg
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1000 mg = 1 g Convert milligrams to grams
Grams = 4.25 × 10¹⁰ × 1/1000
Grams = 4.25 × 10⁷ g
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1000 g = 1 kg Convert grams to kilograms
Kilograms = 4.25 × 10⁷ ×1/1000
Kilograms = 4.25 × 10⁴ kg
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I kg = 2.205 lb Convert kilograms to pounds
Pounds = 4.25 × 10⁴ × 1/2.205
Pounds = 1.93 × 10⁴ lb
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1 t = 2000 lb Convert pounds to tons
Tons = 1.93 × 10⁴ × 1/2000
Tons = 9.6 t
1) Chemical reaction: HCN + H₂O → CN⁻ + H₃O⁺.
c(HCN) = 2,2 M = 2,2 mol/L.
pKa(HCN) = 9,21.
Ka = 6,16·10⁻¹⁰.
[CN⁻] = [H₃O⁺] = x.
[HCN<span>] = 2,2 M - x.
</span>Ka = [CN⁻] · [H₃O⁺] / [HCN].
6,16·10⁻¹⁰ = x² / 2,2 M -x.
Solve quadratic equation: [CN⁻] = [H₃O⁺] = 0,0000346 M.
[HCN] = 2,2 M - 0,0000346 M = 2,199 M.
2) pH = - log[H₃O⁺].
pH = -log( 0,0000346 M).
pH = 4,46.
Hydrocyanic acid and hydronium ion (H₃O⁺) are acids. Cyanide anion (CN⁻) is the strongest base in the system, cyanide anion accept protons in chemical reaction.
pKb = pKw - pKa.
pKb = 14 - 9,21 = 4,79.
Answer:
This is an example of convection