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While kneading dough a chemical reaction occurs between two smaller proteins (peptides) in wheat to produce the protein gluten. What type of chemical bonds are formed between peptides to form proteins? Are these bonds ionic or covalent?
What mass (in grams) of solid sucrose (C12H22O11) would need to be added to 2000 grams of water to make an ideal solution with a boiling point of 102.9°C
Calculate in kilojoules per mole the energy necessary to completely remove an electron from the first shell of a hydrogen atom R infty = 1.097 times10^-2 nm^-1
what volume of 0.200 m hno3 is needed to titrate 38.7 ml of 0.175 m naoh? 2 if 42.5l of 0.45 m hcl is titrated with
Sunlight causes the following reaction to take place in the atmosphere: NO2(g) NO(g) + O(g). Calculate the standard enthalpy of the reaction from the following information and from additional information in Appendix 2A
when 0.08 moles ammonium chloride are dissolved in enough water to make 677 milliliters of solution, what is the molarity of chloride ions?
What wt% of the original impure sample was really sodium chlorate? Assume that no gases will be evolved from the impurities.
Explain the misconception below with a short essay-Carbon dioxide is a criteria pollutant.
Give the bohr electron configuration and lewis electron dot structuce for sulfur. Circle the elector in the Bohr electron configuration and also in the Lewis
The diatomic molecule AB has a dipole moment of 1.21 D and the A-B bond distance is 115 pm. Determine the percent ionic character of the bond in AB
Methyl salicylate (oil of wintergreen) is prepared by heating salicylic acid (C7H6O3) with methanol (CH3OH) C7H6O3 + CH3OH ® C8H8O3 + H2O What is the percent yield if reaction of 7.356
What monosaccharide is the C-2 epimer of alpha-D-galactose? Are these two molecules diastereomers?
Calculate the change in entropy of the copper, taking the Cpm=24.4 J/(K Mole). The experiment was then repeated with the copper immersed in a stream of water that maintains its temperature at 293 K. Calculate the change in entropy of the copper an..
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