The pK of butyric acid (HBut) is 4.82. Calculate the K₁ for butyrate ion (But). Be sure your answer has the correct number of significant digits. a b x10
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- Is the concentration of the solution prepared in the question below only approximate because sodium hydroxide is not a primary standard? * Find the mass in grams of sodium hydroxide that will be required to prepare a solution with a concentration of 0.500 mol·dm⁻³ in a 250 cm³ volumetric flask. [Round the answer to three decimal places. Do not type in the unit. Use a decimal point.] *An aqueous solution is made of the diprotic acid H₂A to a concentration of 0.11 M H₂A. Kat-3.0 x 104 and K₁2=2.5 x 10-9 What is the [A2] in this solution? Your answer should have 2 significant figures and be expressed in scientific notation (i.e. 3.0 x 102 as 3.0e2)Straight-chain, saturated carboxylic acids, a class of hydrocarbons, have the general formula CnH2n+1COOH where n is an integer that ranges from 1 to 18. What would be the %C by mass if n = 8? Atomic weights: C = 12.01, H = 1.01, O = 15.99. Input values only with two decimal places. Do not include the units.
- Straight-chain, saturated carboxylic acids, a class of hydrocarbons, has the general formula CH20+1COOH where n is an integer than ranges from 1 to 18. What would be the %C by mass if n = 6 ? Atomic weights: C=12.01, H=1.01, O=15.99. Input values only with 2 decimal places. Do not include the units. Add your answerMetabolic acidosis - Water/Acid chemistry applied 3 If a patient has a blood pH of 7.11 and a [CO2] Carbonic anhydrases are a family of proteins that catalyze the conversion carbon dioxide to bicarbonate in the presence of water as shown in the chemical equation below: = 1.10 mM, what is the [HCO3] in the patient's blood? Give your answer by rounding to 1 decimal place; units are mM, do not write units in the box. CO2 + H20 = H2CO3 2 H* + Type your answer. HCO3 Bicarbonate ions serve as a means to transport CO2 produced in metabolism as well as affect the buffering capacity of blood. Normal values for blood are pH = 7.4, [HCO3] = 24.0 mM, and [CO2] = 1.2 mM. Also note for H2CO3 that pKa7 is 6.1 and pKa2 is 10.3. Assume [H2O] is saturating.16 The odor of fish is due primarily to amines, especially methylamine (CH3NH₂). Fish is often served with a wedge of lemon, which contains citric acid. The methylamine reacts with the citric acid to form an odorless product, methylammonium citrate, thereby making less-than- fresh fish more appetizing. K₁ for CH3NH₂ = 4.407 × 10-4 CH₂NH₂ (aq) + H₂O(1)⇒ CH₂NH3(aq) + OH(aq) A. B. What is the pH of a solution that is 0.7625 M in methylamine at 25.0 °C? pH = Please provider your answer below. t Check answer → A (0) Check answer What is the pH of a solution that is 7.007×104 M in methylamine? pH = Please provider your answer below. (0
- Straight-chain, saturated carboxylic acids, a class of hydrocarbons, has the general formula CnH2n+¡COOH where n is an integer than ranges from 1 to 18. What would be the %C by mass if n = 12? Atomic weights: C=12.01, H=1.01, 0=15.99. Input values only with 2 decimal places.Calculate the molarity of the solution that results when 8.5 ml of CH3OH (methyl alcohol or methanol) is dissolved in 7.5 ml of water (CH3OH; density 0.792 g/mL) C = 12.01 H = 1.008 O = 16.00 Write this answer with one digit past the decimal point. (Important - Trailing zeroes count as digits - (e.g. 12.0 counts as one digit past the decimal point). The molarity is ______________________MStraight-chain, saturated carboxylic acids, a class of hydrocarbons, has the general formula CnH2n+1COOH wheren is an integer than ranges from 1 to 18. What would be the %C by mass if n = 12 ? Atomic weights: C=12.01, H=1.01, O=15.99. Input values only with 2 decimal places. Do not include the units.
- What type of chemical analysis would you use for the following? 1. 500 milligrams of ascorbic acid in vit. C 2. determination of sodium, glucose, alkaline phosphate, and others in a blood analysis 3. four percent calcium and two percent iron is found in an analysis of pineapple juice [Spectroscopy, gravimetric analysis, volumetric analysis, electroanalytical methods, OR chromatography]Question 5: Find the mass in grams of sodium hydroxide that will be required to prepare a solution with a concentration of 0.500 mol·dm⁻³ in a 250 cm³ volumetric flask. [Round the answer to three decimal places. Do not type in the unit. Use a decimal point.] * The concentration of the solution prepared in Question 5 is only approximate because sodium hydroxide is not a primary standard. * A- True B- FalseWill a ppt of PBCO3 (s) form if you mix 30 mL of 1.3 x 10-8 M Pb(NO3)2 (aq) with 120 mL of 5.7 x 10-6 M Na2CO3 (aq)? (Which of the following is entirely correct?) Q = 7.4 x 1014, no ppt %3D OQ = 7.4 x 10-14, ppt forms 2.5 x 10-9, ppt forms Q = 1.2 x 10-14, ppt forms %3D Q = 1.2 x 1014, no ppt