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Fumaric acid is an organic substance widely used as a food additive. Its elemental composition is 41.4% C , 3.5%H , and 55.1% O. A solution made by dissolving 0.1500 g of fumaric acid in water and diluting to a volume of 100.0 mL gave rise to an osmotic pressure of 240.3 mmHg at 298 K. On titration of a sample weighing 0.573g , 94.1mL of 0.105 MNaOH was required to reach an equivalence point. Fumaric acid reacts with 1 mol ofHCl to give an addition product and with 1 mol of H2 to give a reduction product.
what is the empirical formula of fumaric acid?
what is the molecular mass of fumaric acid?
Draw the structure of the following three isomeric amides with chemical formula C6H11NO. Draw all three structures in the same window, DO NOT separate them with an arrow
Consider the standard cell at 25 degrees Celsius based on the following half reactions. Pb^(2+) + 2e- > Pb Eofcell = -0.13V Zn^(2+) + 2e- > Zn Eofcell = -0.76V To the STANDARD CELL, OH-, is added to the zinc compartment causing precipitation of Zn..
The acid-dissociation constant for an acid-base indicator HIn is 0.0000438. At 600 nm, the molar absorptivities are 2230 for HIn and 8900 for In-. Calculate the absorbance at 600 nm of a 1.00 x 10-4 M solution of the indicator at pH 4.81 in a 1.00..
If the symbol X represents a central atom, Y represents outer atoms, and Z represents lone pairs on the central atom, the structure Y--X(with 2 lone pairs)--Y can be abbreviated as XY2Z2
determine calorimeter constant b) determine reaction enthalpy for the Zn / HCl reaction c) if ?fHo (ZnCl2 aq) is -482.2 kJ mol-1 and ?fHo (HCl aq) is -165.2 kJ mol-1, what is you percent error
In the intermembrane space, attached to the inner mitochondrial membrane. C. In the intermembrane space, attached to the outer mitochondrial membrane D. On the cytosolic side of the outer mitochondrial membrane E. Freely diffusible throughout the ..
What is the maximum mass of S8 that can be produced by combining 80.0g of each reactant? 8SO2+16H2S -> 3S8 + 16H2O
A reaction has a second-order rate law with kr=1.44 dm3 mol-1 s-1. Calculate the time required for the concentration of A to change from 0.460 mol dm-3 to 0.046 mol dm-3.
heat capacity of the bomb calorimeter is known to be 10.6 kJ/C From previous measurements,. Now determine the mass percent of naphthalene(C10H8) in the sample?
Consider the lewis structure for the polyatomic oxyanion shown below, where X is the element from the 3rd period (Na- Ar). By changing the overall charge
what is the mass of one mole of copper atoms? How many moles of copper atoms have a mass equal to the mass of a penny?
Calculate the molar mass of the unknown gas. (Remember that the faster the rate of effusion, the shorter the time required for effusion of 1.0 L; that is, rate and time are inversely proportional.)
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