What are the pH values for the following solutions? (a) 0.1 MHCl (b) 0.1 M NaOH (c) 0.05 M HCl (d) 0.05 M NaOH
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What are the pH values for the following solutions?
(a) 0.1 MHCl
(b) 0.1 M NaOH
(c) 0.05 M HCl
(d) 0.05 M NaOH
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- The molecular formula for glucose is C6H12O6. What would be the molecular formula for a polymer made by linking ten glucose molecules together by dehydration reactions? Group of answer choices A. C60H120O60 B. C60H102O51 C. C60H100O50 D. C60H111O51 Use the following information to answer the following questions."The native structure of hemoglobin (HB) comprises of two α and two β subunits, each of which carries a heme group. There appear to be no previous studies that report the in-vitro folding and assembly of Hb from highly unfolded α and β globin in a 'one-pot' reaction. One difficulty that has to be overcome for studies of this kind is the tendency of Hb to aggregate during refolding. This work demonstrates that denaturation of Hb in 40% acetonitrile at pH 10.0 is reversible." (J Am Soc Mass Spectrum 2007, 18, 8-16)In sickle-cell disease, as a result of a single amino acid change, the mutant hemoglobin tetramers associate with each other and assemble into large fibers.…To make up a solution of phosphate buffered saline (PBS), you need 10 mM Na2HPO4 (anhydrous) (FW: 141.96 g/mol), 3 M NaCl (FW: 58.44 g/mol), and 5mM KH2PO4 (FW: 136.09 g/mol). How many grams of each will you need to make up 850 mL of PBS?In an experiment, what happens to the calculated molar mass after waiting an hour between thawing the frozen cyclohexane and adding the unknown compound, during which time some of the cyclohexane evaporated. Will the molar mass be too large, too small, or unaffected? Explain.|
- How many milliliters of 0.0050 N KOH are required to neutralize 25 mL of 0.0050 N H2SO4? To neutralize 25 mL of 0.0050 M H2SO4?What is the percentage concentration of HNO3 if 25grams of HNO3 is dissolved in enough water to make 1 liter of solution?What is the total anion concentration (in mEq/L) of a solution that contains 5.0 mEq/L Na+ , 12.0 mEq/L Ca2+,and 2.0 mEq/L Li + ?
- What volume of 0.10NH2 SO3 will be required to neutralize a solution containing 10.0grams of Ca(OH)2?a) 0.27Lb) 27Lc) 2.7Ld) 270L What volume of 1.5N NaOH is needed to react with 25ml 4.0N HCl?a) 66.67mlb) 6.67mlc) 50mld) 70mlWhat is the final concentration if 239mL of a 3.9M glucose solution is diluted to a volume of 842mL?What is meant by the term “two-dimensional fluid”?
- The normal concentration of Ca2+ in blood is 5.0 mEq>L. How many milligrams of Ca2+ are in 1.00 L of blood?What is the pH of the following buffer mixtures? (a) 100 mL 1 M acetic acid plus 100 mL 0.5 M sodium acetate (b) 250 mL 0.3 M phosphoric acid plus 250 mL 0.8 M KH2PO4What is the final concentration if 75 mL of a 3.5 M glucose solution is diluted to a volume of 450 mL?