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A solution of I2 was standardized with ascorbic acid Using a 0..1 g sample of pure ascorbic acid, 23.52 mL of I2 were required to reach the starch end point.a. what is the molarity of the iodine solution.b. what is the titer of the iodine solution
How many grams of oxygen are collected in a reaction where 222 mL of oxygen gas is collected over water at a temperature of 25°C and a total pressure of 697 torr?
The compound ZnI4 is best described as anions in a face-centered cubic unit cell with the cations in the tetrahedral holes. What is the density of this compound?
Consider the following reaction. N2 + 3H2 -> 2NH3 . 28.0 grams of N2 and 5.04 grams of H2 are reacted, producing 17.8 grams of NH3. What is the percent yield?
Cadaverine, a fould smelling substance produced by the action of bacteria on meat, contains 58.55% C, 13.81% H and 27.40% N. Its molar mass is 102.2 g/mol.
How many grams of methanol must be added to 7.50kg of water to lower its freezing point to -15.0^circ C? For each mole of solute, the freezing point of 1 {rm kg} of water is lowered 1.86 ^circ {rm C}
How much heat is produced by the complete combustion of 256 CH4 of ? CH4+2O2=CO2+2H2O Hrxn=-802.3kJ
What is the percent hydrogen (H) by weight of a solution containing 53.5 mL of CH3COCH3? The density of acetone is 0.788 g/mL.
Estimate the free energy change (?Grxn) for the following reaction at 298 K, if each gaseous substance is present at p = 0.30 atm. 2H2(g) + O2(g) ? 2H2O(l)
What mass of NaOH is needed to precipitate the Cd^{2+} ions from 39.0 mL of 0.550 M Cd(NO3)2 solution?
the gaseous product of a reaction is collected in a 25L container at 27degrees celsiu. the pressure in the container is 300.0 kPa. how many moles of the gas are in the container.
The ion is stabilized due to the delocalization of the positive charge to the aromatic ring. Draw resonance structures that indicate the stability of this ion.
Write the formula of the reactants and products-including the symbols for the state- (s), (l), (g), (aq)- then balance the equation.
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