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Balance the subsequent redox equation, using half-reactions. Presume that the reaction occurs in an aqueous solution. Demonstrate
Cr2O72- + NO -----> Cr3+ + NO3-
a 4.22 g sample of cus was added to excess hcl and the resulting h2s was collected over water. what volume of h2s was
calculate the number of joules required to melt 43.6g of benzene at 5.5 degrees celsius?nbspthe heat of fusion for
How many equivalents of electrons were delivered to the unknown soln. What is the normality of the unknown solution
Draw a diagram showing the stratification in a body of water. Label the different layers and describe the type of chemistry (and species) that occurs at each level.
Which of the following is the definition of molarity. A. moles of solute/1000 grams of solvent B. moles of solute/liter of solution C. moles of solute/liter of solvent D. moles of solvent/1000 grams of solute
Elemental "white" phosphorus exists in nature as P4 molecules, in which all the P atoms have identical bonding. (a) Draw a Lewis Structure that represents this molecule.
the change in energy of each system and also of the composite system. the change in entropy of each system an also of the composite system.
opportunism in health care is especially perceptible in the health insurance markets. consider the area in which you
N2O4 + 2 N2H4 = 3 N2 + 4 H2O Determine the Limiting Reactant and the mass in Grams of Nitrogen that can be formed from 50.0g N2O4 and 45.0g N2H4. The molar masses are: N2O4=92.02G/mol and N2H4=32.05G/mol.
Given that a sample of air is made up of nitrogen, oxygen and argon in the mole fractions 78% N2, 21% O2 and 1.0% Ar, what is the density of air at sandard temperature and pressure?
.493g of H2SO4 is reacted with a .568 M solution of NaOH to make sodium sulfate and water. How many liters of H2SO4 will react with .633 L of the NaOH solution.
An ionic solution is investigated for identity. Using the following clues, identify the cation and the anion in the solution: a. There is only one cation and one anion in the solution
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