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Draw a structural formula for potassium 2-ethylpentanoate
Include cationic counter-ions, and Separate structures with + signs
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- On the following page are three compounds, 1, 2, and 3, that have been investigated as anti-malarial candidates. Compound 1 is the "parent" molecule, and 2 and 3 are derivatives. Shown next to each molecule is (i) the enthalpy change when it binds to its target, and (ii) the dissociation constant for the molecule/target complex. Consider the structures and answer the following: AH = - 1.2 kcal/mol; Kp = 16 nM OH 1 HO AH = - 6.0 kcal/mol; Kp = 76 nM OH AH = - 5.5 kcal/mol; Kp = 0.5 nM OH 3 (i) What is the difference among 1, 2, and 3?(4d-202) A buffer solution is made by mixing H3PO4 and NaH2PO4 in water. How does this buffer system neutralize an addition of 5 mL of 0.45 M NaOH? Choose one of the options below. • The H3PO4, as a weak acid, will neutralize the added NaOH • The NaH2PO4, as a weak base, will neutralize the added NaOH • The H3PO4, as a weak base, will neutralize the added NaOH • The NaH2PO4, as a weak acid, will neutralize the added NaOH For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). Paragraph Arial 14px A v Ix Q x² X, g ST 田用国 EXE ABC Ť {;} +) P. O WORDS POWERED BY TINY +]Predict the products of each of the following reactions. (a) MnCO3(s) + HI(aq) ⟶(b) CoO(s) + O2(g) ⟶(c) La(s) + O2(g) ⟶(d) V(s) + VCl4(s) ⟶(e) Co(s) + xsF2(g) ⟶(f) CrO3(s) + CsOH(aq) ⟶
- Given the following two equilibria: NiCO3(s) Ni²+ (aq) + CO32-(aq) HCO3(aq) + H₂O(l) — CO3²-(aq) + H3O+ (aq) K₁= 6.6 x 10-9 K₁₂ = 4.8 × 10-11 calculate the equilibrium constant for: NICO3(s) + H3O+ (aq) → Ni²+(aq) + HCO3¯(aq) + H₂O(l) A. 7.3 x 10-3 B. 3.2 x 10-19 C. 140 D. 1.8 x 10-⁹Hemoglobin's Affinity for Oxygen What is the effect of the following changes on the O affinity of hemoglobin? (a) A drop in the pH of blood plasma from 7.4 to 7.2. (b) A decrease in the partial pressure of CO₂ in the lungs from 6kPa (holding one's breath) to 2kPa (normal). (c) An increase in the BPG level from 5mm (normal altitudes) to 8mm (high altitudes). (d) An increase in CO from 1.0 part per million (ppm) in a normal indoor atmosphere to 30ppm in a home that has a malfunctioning or leaking furnace.Bromoscresol green, Ka = 2.0 x 10-5 is yellow in its protonated form (HX) and blue in its ionized form (X-). At what pH will bromoscresol green be a perfect green colour? Express your answer to one decimal place.
- Selective serotonin reuptake inhibitors (SSRIs) are commonly prescribed antidepressants. SSRIs block the reabsorption of the neurotransmitter serotonin in the brain. Changing the balance of serotonin helps brain cells send and receive chemical messages, which in turn boosts mood. Two SSRI medications are Faverin (fluvoxamine, C15H21F3N2O2 ) and Zoloft (sertraline, C17H17Cl2N ). Determine the molar masses of Faverin and Zoloft"After standardization, silver nitrate must be stored in amber bottle and at room temperature with proper ventilation." True FalseGiven the Ka values (in parentheses) for the following acids: HSO4– (Ka= 1.2 x 10–2); HNO2 (Ka= 4.0 x 10–4); HC2H3O2 (Ka= 1.8 x 10–5); Calculate Kc values for the following acid-base equilibria: (a) HSO4–(aq) + C2H3O2–(aq) ⇌ HC2H3O2(aq) + SO42–(aq) (b) HC2H3O2(aq) + NO2–(aq) ⇌ HNO2(aq)+ C2H3O2–(aq)