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When drawing a Lewis structure, how do I know which atom serves as the central atom in a Lewis structure?
how is the rate of consumption of O2 related to the rate of consumption of NH3 in the reaction 4NH3 + 5O2 -->4NO +6H2O?
A 10.0 mL sample of vinegar, which is an aqueous solution of acetic acid, CH3COOH, requires 16.5 mL of a .500 M NaOH solution to reach the end point in a titration. what is the molarity of the acetic acid solution? CH3COOH(aq)+NaOH(aq)>NaCH3COO(aq..
A sealed container holds 1.00 mole of helium and 2.00 moles of nitrogen at 30.0°C. When the total pressure of the mixture is 666 mm Hg, what is the partial pressure of the nitrogen? Provide an answer correct to 2 significant figures in mmHg.
Why would the cell potential be higher with the addition of 6 M Na2S solution to .001 M of CuSO4 (compared to 6 M NH addition to .001 M CuSO4)
A voltaic cell made of a Cr electrode in a solution of 1.0 M in Cr^3+ and a gold electrode in a solution that is 1.0 M in Au^3+.
a 2.10-g sample of a large biomolecule was dissolved in 14.0 g of carbon tetrachloride. the boiling point of this
ropes 3 m and 5 m in length are fastened to a holiday decoration that is suspended over a town square. the decoration
What quantity of heat is required to vaporize 151 g. of benzene C6H6 at its boiling point 80.1 degrees celsius? Heat of vaporization = + 30.8 kj/mol.
Do these lambda maxs indicate an increase or a decrease in the energy of the light absorbed as the number of EN ligands bound to Cu(II) increases
The carbon-11 nuclide radioactively decays by positron emission. Write a balanced nuclear chemical equation that describes this process.
Two components have boiling points of 130 C and 150 C. Estimate the number of theoretical plates needed to separate these substances in a fractional distillation.
6 M H2SO4 is carelessly substituted for 6 M HCL. Will more or fewer drops of 6 M H2SO4 be required for the litmus to change color
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