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Explain why light intensity is dependent on the distance the detector is from the light source. Describe the mathematical relationship. Explain why all comparative measurments for this experiment should be made with the optical cable the same distance from the light source.
calculate the heat in joules released by the dissolving salt. Assume that the specific heat of the solution is the same as thar of pure water(4.184J/g- celcius) and that the calorimeter is perfect.
Given the values of Ka and Kb below, which of the systems given would be most suitable to use to construct a buffer of pH 9
Balance the following redox equation . Once you have balanced the equation calculate how many grams of ammonia will be produced starting from 10 g of Zn
Compute the equilibrium constant for the reaction between Sn2+ (aq) and Cd(s)
The chlorination of propane yields 4 different dichloropropanes of formula C3H6Cl2. Using the following information to identify dichloropropanes A,B,C,D.
Calculate the volume of a .850 M KOH solution necessary to neutralize 25.00 mL of 1.500 M solutions
what is the emperical formula of a compound that is 17.552% Na, 39.696% Cr, and 42,752% O?
A 100 mL sample of .20 M HF is titrated with .10 M KOH. Determine the pH of the solution before the addition of any KOH. The Ka of HF is 3.5 * 10^-4
If you used 0.165 mL of acetic anhydride, and 0.167 g of p-aminophenol. How many moles of the non-limiting reageant remained after the reaction was complete?
A 330 mL container holds 0.146 g of Ne and an unknown amount of Ar at 35°C and a total pressure of 626 mmHg. Calculate the moles of Ar present.
Analysis of corrosion mechanisms and preventative measures
What is the hydronium-ion concentration of a 5.23 10-4 M solution of p-bromobenzoic acid, BrC6H4COOH, for which Ka = 1.00 10-4
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