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Concept explainers
Interpretation:
The number of moles of
Concept Introduction:
The coefficients that are present in a balanced chemical equation is like subscripts in the chemical formula. These coefficients can be interpreted in two levels. One is a microscopic level and another is macroscopic level.
Microscopic level:
The coefficients that are present in a balanced chemical equation gives numerical relationship between the formula units consumed or produced when a
Macroscopic level:
In a balanced chemical equation, the coefficients gives information about the fixed molar ratios among the substance that is consumed or produced when a chemical reaction takes place.
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Chapter 6 Solutions
EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
- A mixture containing glutamic acid, arginine, phenylalanine and valine was subjected to anion exchange chromatography at pH 7.0. Which of the amino acids interacted with the resin (anion exchanger) and last to be eluted with a buffer of decreasing pH? A. Glu B. Val C. Phe D. Argarrow_forwardBased on the Henderson-Hasselbalch equation (shown below), calculate the pH when the ratio of acetic acid to acetate is 10 to 1 (the pKa of acetic acid is 4.76). A. 1.00 B. 3.76 C. 4.76 D. 5.76arrow_forwardThe conversion of glucose-1-phosphate to glucose-6-phosphate by the enzyme phosphoglucomutase has a △G°' of -7.6 kJ/mol. Calculate the equilibrium constant for this reaction at 298 K and a pH of 7. (R = 8.315 J/K-mol) A. 0.003 B. 0.047 C. 1.00 D. 21arrow_forward
- Potassium nitrate is widely used in industries. The reaction for the industrial production of KNO3 is summarized in the equation below; 4KCl + 4 HNO3 + O2 → 4 KNO3 + 2 Cl2 + 2 H2O Which of the following statements below is correct about the production of KNO3? a. A redox reaction; KCl is a reducing agent and O2 is an oxidizing agent b. A redox reaction; HNO3 is a reducing agent and Cl is an oxidizing agent c. Not a redox reaction d. A redox reaction; KCl is a reducing agent and KNO3 is an oxidizing agent e. A redox reaction; HNO3 is a reducing agent and KNO3 is an oxidizing agentarrow_forwardDefine the following terms:a. allyl groupb. epoxidec. SAM d. PAPSe. phase I reactionarrow_forwardWhat is the initial rate of reaction show by the data in the graph below? A. 0.6 mmol per litre / second B. 6 mmol per litre / second C. 10 mmol per litre / second D. 60 mmol per litre / secondarrow_forward
- Consider a buffer solution that contains 0.55 M NH2CH2CO2H and 0.35 M NH2CH2CO2Na. pKa(NH2CH2CO2H)=9.88. a. Calculate its pH. b. Calculate the change in pH if 0.155 g of solid NaOH is added to 250 mL of this solution. c. If the acceptable buffer range of the solution is ±0.10 pH units, calculate how many moles of H3O+ can be neutralized by 250 mL of the initial buffer.arrow_forwardBased on the Henderson-Hasselbalch equation (shown below), calculate the pH when half of a solution of acetic acid is dissociated to acetate (the pKa of acetic acid is 4.76). A. 1.00 B. 3.76 C. 4.76 D. 5.76arrow_forwardWhat is the product of intramolecular dehydration of pentanol-2 CH3CH(OH)CH2CH2CH3? Select one:a. Pentene-2b. Pentene-3c. Pentene-1d. Pentanearrow_forward
- You are showing your dad graphs of lactase activity. In the graph below, what should the vertical axis be titled? 12 10 4 2 2 6. 8 10 12 14 16 Time (minutes) (Accessibility info: One line on graph, uses these coords: 0,0; 2, 025; 4,1; 6,4; 8,7; 10,10; 12,11; 14, 11.25) Curve is slow to rise, up on a linear slope, slowly flattens at top.) Lactase (units/ml) cross out а. O b. Lactose (µM) cross out С. Glucose (µM) cross out d. Galactose (µM) cross out e. Starch (uM) cross out f. None of these answers are correct. cross out O O O Oarrow_forwardTerpin hydrate contains 1 gr of codeine per fluidounce. How much codeine (in mg) should be added to 8 fluidounces such that each teaspoonful contains 20 mg of codeine? Select: a 946.2 mg b. 427.8 mg c. 518.4 mg d. 6.55 mg. Please type answer note write by hend.arrow_forward7. 30 grams of acetic acid (60 MM) is added to 120 g sodium acetate (82 MM). The total volume of the solution is 1 liter. What is the pH of the solution if the is Pka is 4.76? А. 3.23 В. 4.23 C. 5.23 D. 6.34 8. ADH requires NAD+ for catalytic activity. In the reaction catalyzed by ADH, an alocohol is oxidized to an aldehyde as NAD+ is reduced to DADH and dissociates from the enzyme. The NAD is functioning as a (an): A. Apoenzyme B. Coenzyme-cosubstrate c. Coenzyme-prosthetic group D. Cofactor 9. Carbohydrate test that is based on the reduction of Copper ions, EXCEPT. A. Bial's Orcinal test B. Barfoed's test C. Benedict's test D. None of the above. 10. All are carbohydrate monomers, EXCEPT. A. Fructose В. Mannose C. Both A and B D. None of the above. 11. Which one of the following statements about protein structure is correct? A. Proteins consisting of one polypeptide can have a quaternary structure. B. The formation of disulfide bond in a protein required that 2 adjacent participating…arrow_forward