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Yeast is used as a leavening agent in bread making. The yeast metabolizes with the natural carbohydrates in the flour, converting them to CO2 and ethyl alcohol and it is the CO2 gas that raises the bread. So, when making yeast bread it is very important that the mixture not be overheated during the leavening process because if it is overheated the bread will not raise. Explain in terms of protein denaturation.
if a chemical reaction a b --gt c d is endothermic what is the sign of deltah for the reaction? would the temperature
Which of the following is always true for a spontaneous process at constant temperature. A) Delta S system + Delta S surroundings = q/T B) Delta S > 0 C) Delta S = q/T D) Delta system + Delta S surroundings > 0 E) Delta S
an organic compound absorbs strongly in the ir at 1687cm-1. an oxidation is converted to benzoic acid. its massspectrum
How many Pb atoms would be present in a 0.500 L sample of this air (the approximate lung capacity of a human adult)?
find deltah for the freezing of water at -8.00 degrees celcius. the specific heat capacity of ice is 2.04 jg. c and its
Calculate the quantity of sodium fluoride in kilograms needed per year for a city of 50,000 people if the daily consumption of water per person is 115.0 gallons.
Calculate the ?G°' for acetate (CH3COOH) oxidation to CO2 with sulfate serving as the electron acceptor. - what yield of ATP could be expected per mole of substrate oxidized?
What is the pH of a solution which contains 0.300 moles of Na2HPO4 and 0.200 moles of Na3PO4 per liter of solution?
Marble is composed mainle of calcium carbonate. If 0.750 g of marble react with hydrocloric acid to produce 165 mL of carbon dioxide gas at STP, what is percent of calcium carbonate in the marble sample
Element X has two isotopes- X - 100 and X 104. If the atomic mass of X is 101 amu, Explain what is the relative abundance of each isotope in nature
Iron has a density of 7.9 g/ cm3. What is the mass of a cube of iron with the length of one side equal to 55.0 mm.
125 mole of oxygen gas is added to carbon in a .25L container. The mixture equilibriates at 500K. Calculate the equilibrium concentration of carbon monoxide, knowing that K=.086 at 500K.
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