
Concept explainers
(a)
Interpretation: The validation of the food, pork being a complete protein has to be stated.
Concept introduction: Protein is a naturally occurring molecule composed of amino acids. The proteins which are present in the same relative amounts that the body needs are called complete protein.
(b)
Interpretation: The validation of the food, wheat being a complete protein has to be stated.
Concept introduction: Protein is a naturally occurring molecule composed of amino acids. The proteins which are present in the same relative amounts that the body needs are called complete protein.
(c)
Interpretation: The validation of the food, beans being a complete protein has to be stated.
Concept introduction: Protein is a naturally occurring molecule composed of amino acids. The proteins which are present in the same relative amounts that the body needs are called complete protein.
(d)
Interpretation: The validation of the food, gelatin being a complete protein has to be stated.
Concept introduction: Protein is a naturally occurring molecule composed of amino acids. The proteins which are present in the same relative amounts that the body needs are called complete protein.

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Chapter 9 Solutions
Organic And Biological Chemistry
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- the decomposition of N2O5 is the first order with a half-life of 1.98 minutes. If the inital concentration of N2O5 is 0.200 M, what is the concentration after 6 minutes?a) 0.612 Mb) 0.035 Mc) 0.024 Md) 0.100 Marrow_forward20.00 mL of 0.150 M HCI is titrated with 0.075 M NaOH. What volume of NaOH is needed?a) 50 mLb) 20 mLc) 40 mLd) 26.66 mLarrow_forward20.00 mL of 0.150 M NaOH is titrated with 37.75 mL of HCI. What is the molarity of the HCI?a) 0.150 Mb) 0.079 Mc) 0.025 Md) 0.050 Marrow_forward
- in the following reaction, the OH- acts as which of these?NO2- (aq) + H2O (l) ⇌ OH- (aq) + HNO2 (aq)a) not a weak acidb) basec) acidarrow_forwardfind the pH of a buffer made from 0.20 M HNO2 and 0.10 M NaNO2. Ka= 4.0 x 10-4a) 4.00b) 3.40c) 3.70d) 3.10arrow_forwardthe Ka for sodium dihydrogen phosphate is 6.32 x 10-8. Find the pH of a buffer made from 0.15 M H2PO4- and 0.15 M HPO42-.a) 6.98b) 7.42c) 7.00d) 7.20arrow_forward
- Find the equilibrium concentration of H3O+ starting with 0.072 M solution of acetic acid. Ka = 1.8 x 10-5. Acetic acid is HC2H3O2 (aq).HC2H3O2 (aq) + H2O (l) ⇌ H3O (aq) + C2H3O2- (aq) a) 1.3 x 10-6 b) 1.1 x 10-3 c) 1.5 x 10-2 d) 3.6 x 10-5arrow_forwardin VSEPR Theory, AX2 isarrow_forwardcalculate the pH of 0.066 M Ca(OH)2. Remember stoichiometry.arrow_forward
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