General Chemistry Answers

The decomposition of NO2 is a second order reaction and the rate constant is 0.755 L/mol-s. In an experiment, the initial concentration of NO2 was 0.00650 mol/L. How many seconds will it take for the concentration of NO2 to drop to 0.00100 mol/L?

What is the HOMO for C2

Calculate the mass of Na_2O that forms if 4,8g O₂ reacts completely with sodium

why the ionic radii for S2- is larger than O2-

Determine the ppm of K+ ions in an aqueous solution, given that there are 0.300 g of KCl in 1.50 L of water. Assume the density of water is 1.00 g mL-1 .

Determine all possible ratios for the following balanced chemical equations.

a) 4Al(s) + 3O2(g)→2Al2O3(s)

b) 3Fe(s) + 4H2O(l) → Fe3O4(s) + 4H2(g)

It is appropriate to return any excess solvent or solution back into the reagent bottle

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The four successive ionization energies for an unknown element are;

I1=896kJ/mol

I2=1752kJ/mol

I3=14807kJ/mol

I4=17948kJ/mol

To which family in the periodic table does the unknown element most likely belong?

 A real gas behaves most like an ideal gas under the following conditions: