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Citric acid (H3C6H5O7) is a product of the fermentation of sucrose (C12H22O11) in air.
C12H22O11(aq) + 3 O2(g) 2 H3C6H5O7(aq) + 3 H2O(l)
Determine the mass of citric acid produced when 4.60 mol C12H22O11 is used.
Calculate the molar mass of a gas if 4.40 g occupies 3.50 L at 560 torr and 41°C.
Explain why it is preferable to take the geometric mean rather than the arithmetic mean when defining mean activity
A 25.0 g sample of garden compost was analyzed for chloride content. The sample was dissolved in water and the chloride was precipitated as silver chloride. 1.58 g of dried precipitate was obtained. Calculate the percent chloride in the sample
What mass of barium sulfate is produced when 100.0 mL of a 0.100 M solution of barium chloride is mixed with 100.0 mL of a 0.100 M solution of iron(III) sulfate.
Calculaw the concentration of hydroxide ions in stomach acid at body temperature. ([H3O^+]=0.10M)
how many mols of o2 are produced by the reaction of 156g of co2 with an excess of ko2
A certain reaction, a+b=c is the first order with respect to each reactant, with k=1.0x10-2l.mol-1s-1. Calculate the concentration of A remaining after 100s if the initial concentration
The measured density of a certain gaseous amine at 0 C as a function of pressure is: P(atm) 0.200 0.500 0.800
A 1.0 liter sample has a solids concentration of 1600 mg/L and is allowed to settle for 1 hour. After one hour the top 550 mL of water is removed and found to have a solids concentration of 25 mg/L. What is the solids concentration in the water re..
A sample of He gas (V = 3.0 L) at 5.6 atm and 25 °C was combined with 4.5 L of Ne gas at 3.6 atm and 25 °C in a 9.0 L flask (which was initially evacuated).
If an enzyme-catalyzed reaction proceeds at 25% maximal velocity at 5 mM substrate concentration, calculate the Km of the enzyme.
concentration was dissolved in HCl and diluted to 100.0 mL. Aliquots of 10.00 mL of this unknown solution were added to different volumes of a 2.08 ÃŽ¼g/mL Ca standard solution and diluted to 200.0 mL. Find the weight percent of Ca in the rock sam..
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