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Which of these mixtures are heterogenous?
- granite
- brass
- oil and water
- salt and water
What is the value of the equilibrium constant for the reaction between I2 (s) and Br- (aq) at 25 degrees celcius?
Write a balanced molecular equation for these ten combinations.
an electrochemical cell is constructed at 25 c as follows. one half cell zn2zn cell that is a strip of zinc immersed in
Write the name of the major organic product obtained from the reaction between 1-phenyl-1-ethanol and concentrated sulfuric acid when heated.
What is the standard reaction enthalpy for which the equilibrium constant is doubled when the temperature is increased by 10 C at 298 K
The diluted reference is placed in a cell with a 1.00-cm light path. You then take 35.0 mL of the well water, treat with HNO3 and excess KSCN, and dilute to 100.0 mL. This diluted sample is placed in a variable pathlength cell. The absorbance of t..
The water level in the Carbon dioxide collection cylinder is higher than the water(H2O) level outside the cylinder.Is the wet carbon dioxide gas pressure greater or less than atmospheric pressure.
determine the concentration of O3 in air sample (in ppm)If 10,000 Litres of air bubbled through iodide solution and back titrated with 19.4 mL of a 1.2x10-4 M Sodium thiosulfate, also spelled sodium thiosulphate solution to reach equivalence,?
At a particular temperature and 2.00x10^-2 M, concentration versus time data were collected for the reaction, and a plot of the natural log versus time resulted in a straight line with slope value of -2.97x10^-2 min^-1. Determine the rate law, int..
What is the length of a cubic lose-packed unit cell of an element, in picometers, if the atomic radius is 187.0pm
If the wave functions describing the 2s and two of the 2p orbitals are combined, the identical orbitals form bond angles of what degree?
In the formation of smog, nitrogen and oxygen gas react to form nitrogen dioxide: N2 (g) + 2O2(g) ---> 2NO2 (g). How many grams of NO2 will be produced when 1.7L of nitrogen at 810 mmHg and 24C are completely reacted
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