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For bromocresol green indicator, the pKa of the indicator is about 4.7. Estimate the pH range over which the color change occurs for bromocresol green. What would be the effect on your results if methyl red indicator, pKa =5.0 were used during the experiment?
The chemical 5-amino-2,3-dihydro-1,4-phthalazinedione... better known as luminol, is used by forensic scientists in analyzing crime scenes for the presence of washed-away blood.
Solid iron(III) oxide reacts with solid aluminum to produce solid iron and solid aluminum oxide. If 50.0 grams of iron(III) oxide were mixed with 50.0 grams of aluminum, what maximum mass of iron metal could be produced?
determine the volume of a cube 10,62 cm, give an example of four sets of measurements that illustrate an imprecise and inaccurate data
Gasoline is composed primarily of hydrocarbons, including many with eight carbon atoms, called octanes. One of the cleanest-burning octanes is a compound called 2,3,4-trimethylpentane, which has the structural formula shown in the figure.
How much heat is released when 105 g of steam at 100 Co is cooled to ice at -15Co? the enthalpy of vaporization of water is 40.67 KJ/mol, the enthalpy of fusion for water is 6.01KJ/mol,
Calculate the internal energy and ethalpy change if the volume is changed from 10L/Mmol to 20L/mol and the temperature is changed from 300k too 600k. Use the vander waals equatino and assume that no phase changes ocurr
What is the vapor pressure of each of the solution components in the mixture? What is the total pressure above the solution?
Construct the appropriate calibration curve as described in this lab and determine the %(W/W) of fluoride in the original toothpaste sample:
How many grams of steam at 105 degree celcius must be mixed with 25g of ice at -15 degree celcius in an adiabatic calorimeter with a heat capacity of zero in order to produce a final mixture
Using your knowledge of chemistry, describe at least one method that could be used to remove lead(II) acetate from a sample of wine.
Could you explain why carbonate, specifically sodium carbonate (Na2CO3) would be particularly good at neutralizing these acids and their conjugate bases?
Ideal gas law and meteorological balloon, Balloons are still used to deploy sensors that monitor meteorological phenomena and the chemistry of the atmosphere. It is possible to investigate some of the technicalities of ballooning by using the perf..
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