Answer:
Here's what I find.
Explanation:
a. Structure
Acebutolol is a secondary amine (basic). It forms a substituted ammonium salt when treated with hydrochloric acid.
The structure of the salt is shown below, with a red arrow pointing toward the positive charge on the N atom.
b. Solubility
The formula of acebutolol is C₁₈H₂₈N₂O₄.
The amide, acetyl, and ether groups confer little solubility to the molecule.
The alcohol and secondary amine do confer some solubility, because they can donate and accept hydrogen bonds.
However, they can each overcome the hydrophobic properties of only three to five carbons, and acebutolol has 18 of them.
The free amine would be preferentially soluble in lipid material (fats)
The protonated amine is ionic and therefore much more soluble in aqueous media (e.g., blood).
c. Marketing
The drug must be delivered to the tissues of the heart, where it blocks the effects of adrenalin. The best way to do this is through the blood, so acebutolol is marketed as the hydrochloride salt.
<u>Answer:</u>
Earth's climate has changed naturally over the past 650,000 years, moving in and out of ice ages and warm periods. Changes in climate occur because of alterations in Earth's energy balance, which result from some kind of external factor or "forcing" an environmental factor that influences the climate.
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<u>Explanation:</u>
*Hope this helps*
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Answer : The correct answer is ⁶⁴ Zn ₃₀ .
Positron is ⁰e₊₁ particle . When it is absorbed the atomic number increases by 1 but atomic mass remains same . The given nuclide is ⁶⁴ Cu₂₉ . In this atomic mass is 64 and atomic number is 29 .
So when it will absorb one positron the atomic number will increase by 1 that is atomic number = 30 . Since atomic number = 30 is for Zinc atom , so when ⁶⁴ Cu₂₉ absorb one positron it produces ⁶⁴ Zn ₃₀ as resulting atom . The reaction can be written as:
⁶⁴ Cu₂₉ + ⁰e₊₁ → ⁶⁴ Zn ₃₀
Ben is correct because the planet leaning towards the light is a behavior the plant has learned in order to survive, for the simply fact plants get glucose and photosynthesize from the sun
Answer:
Explanation:
Energy needed = mass * temperature difference * specific heat
= 4.37 * (27.5-25) * 0.24
= 4.37 * 2.5 * 0.24
= 2.622J