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Complete and balance the following equation, and identify the oxidizing and reducing agent.(Write down each of the half reactions)Cr2O7^2-(aq)+Fe^2+(aq)-->Cr^3+(aq)+Fe^3+(aq) (acidic)
In a typical experiment, you drop a gelatin capsule containing 0.1458 g of an Al-Zn alloy sample into an HCl solution. a) Write the equations that represent the chemical reactions that take place after the capsule has dissolved in HCl?
It takes 55.0 J to raise the temperature of an 10.3 g piece of unknown metal from 13.0C to 24.7 C. What is the specific heat for the metal?
a) What is the structure of biacetyl? b) Indicate the hybridization of each carbon atom. c) How many pi bonds are present? d) Do the four carbon atoms lie in a plane or do they lie in a straight line?
The pressure is changed to 8.75 atm and the gas is cooled to 15 C. Calculate the new volume of the gas using the ideal gas equation.
A chemist studying the properties of photo- graphic emulsions needed to prepare 500 mL of 0.18 M AgNO3 (aq). What mass of silver nitrate must be placed into a 500 mL volumetric ?ask, dissolved, and diluted to the mark with water? Answer in units o..
Write down the Empirical Formula if aA Compound Is 21.20% nitrogen, 6.06% Hydrogen, 24.30% sulfur , And 48.45% Oxygen?
What volume (in mL) of water must be added to a 1.133 M solution of sodium chloride to make a 52.4 mL of a 0.52024 M solution? Assume the volumes are additive.
A solution of 53.6 g of glycerin in 133.7g of ethanol has a vapor pressure of 113 torr at 313K. Calculate the vapor pressure of pure ethanol assuming that glycerin is a non-volatile, non electrolyte solute in ethanol.
how many ice cubes are needed to cool 500 g of water initially at 23 c to 0.0 c if each cube at 0.0 c contains one mole of water.
Calculate the relative proportions of two conformers A and B in a compound, assuming that an energy of 15.5 kj/mol is required to go from
On the assumption that the debye-Huckel limiting law applies, what is the value of the solubility product equilibrium constant Ksp for AgCl in such conditions?
The osmotic pressure of solutions of polystyrene in toluene were measured at 25?C and the pressure was expressed in terms of the height of the solvent of density 1.004 g cm-3.
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