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At 25C, what is the hydroxide ion concentration, [OH-], in an aqueous solution with a hydrogen ion concentration of [H+]=2.7 x 10 ^ -6 M?
calculate strain on Co-Cr rod. Assuming compression is elastic, calculate stress on rod. Then compare stress with given properties. Based on stress value, was the compression purely elastic?
which of these is true about the following reaction?
Assume that a particular reaction evolves 224kj of heat and that 24kj of work is gained by the system. what are values of delta E and delta H for the system
Consider the following chemical equation. Cl2(g) + O2(g) ? Cl2O3(g) Assuming all gases are at the same temperature and pressure, how many milliliters of oxygen gas must react to give 3.00 L of Cl2O3
At 0°C a 1.00 L flask contains 6.90 10-2 mol N2, 4.40 102 mg O2, and NO at a concentration of 9.00 1018 molecules/cm3. What is the partial pressure of each gas, and what is the total pressure in the flask?
Write the cell reaction and electrode half-reactions, and calculate the standard potential for each of the following cells: a) Pt|Fe3+(aq),Fe2+(aq)||Sn4+(aq),Sn2+(aq)|Pt
What is the splitting of the signal in the 1H NMR spectrum for the methyl protons of ethane? What is the splitting of the signal in the 1H NMR spectrum for the methyl protons of 1-bromo-2-methylpropane? Please explain?
The half-life for a first-order reaction is known to be 379 seconds at a given temperature. What is the rate constant at this temperature?
If a fresh golden delicious apple weighing 4.30 (120 ) contains 17.0 of fructose, what caloric content does the fructose contribute to the apple?
a 75 ml solution of 0.030 m caoh2 is titrated with 0.035 m hcl. calculate the ph of the mixture after 60 ml of hcl have
describe and explain the possible effects on your results of the following experimental errors or variations.
The object ofthis problem is to determine V40, the required volume ofthe 40% mixture. Calculate V40 and do a degree-of-freedom analysis.
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