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Find out the partial pressures and the total pressure in a 2.50 L vessel containing the following mixture of gases at 17.8 C: 0.0194 mol He, 0.0631 mol H2, abd 0.149 mol Ne
Consider the titration of 100.0 mL of 0.100 M H2NNH2 (Kb = 3.0 10-6) by 0.200 M HNO3. Calculate the pH of the resulting solution after 100.0 mL of HNO3 have been added.
A Solution is made by dissolving 8.5 grams of NaOH in 2.3 L of water. What is the molarity of the solution?
1. draw the structure of the following compounds. nbspshow stereochemistry.sncl3 -ga2ch34och32bh3nch3
Why does the temperature 25 degrees Celsius have three significant figures and the temperature of -196 degrees Celsius have only two significant figures
A reaction at 4.39 atm consumes 5.20 L of a gas adiabatically (q = 0). Calculate the change in internal energy of the system (in kJ).
Calculate and indicate values of nonzero formal charges. Based on formal charges, circle the preferred structure.
A molecule having a molar mass of 190.3 g/mol crystallizes to a cubic solid where each edge of the unit cell is 638.0 pm. Each unit cell contains 2 molecules. What is the bulk density of the crystal
a new temperature scale is proposed based on the melting andboiling point of benzene. the melting point os benzeneis
Given the following peptide: MPFITCYRVE What is the net charge on this peptide at pH 3 and pH 11. Use the pK values for the individual amino acids in Table 4.1. Estimate the pI (isoelectric point) for this peptide.
The space shuttle orbiter utilizes the oxidation of methyl hydrazine by dinitrogen tetroxide for propulsion. 4 N2H3CH3(l) + 5 N2O4(l) 12 H2O(g) + 9 N2(g) + 4 CO2(g) Calculate ?H° for this reaction. in kJ
The solubility of magnesium fluoride, MgF2, in water is 0.016 g/L. What is the solubility (in grams per liter) of magnesium fluoride in 0.013 M sodium fluoride, NaF
Classify Na2C2H3O and Cu(NO3)2 as weak, strong or non-electrolyte in aqueous solution.
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