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The components of the sample other than the analyte makes up the "matrix" of the analyte. If the matrix of our sample does not match that of our standards, then the signals may not match even if the concentrations of quinine are identical. When the matrix enhances or diminishes the signal intensity of an analyte, the analyte is said to be experiencing "matrix effects". List some examples of matrix effects that are relevant to spectrofluorometry, and explain why standard addition helps overcome matrix effects.
Compare the charge distribution for the 5-membered ring in both forms as well as provide a short simple rationale for the observed differences.
Charcoal is primarily carbon. Determine the mass of CO2 produced by burning enough carbon to produce 5.00 x 102 kJ of heat. C(s) + O2(g) = CO2(g) DH = -393.5 kJ
Reduce the production of hazardous waste and encourage recycling and reuse of hazardous materials by charging producers a tax or fee for each unit of waste generated.
Question- A solution of formic acid (HCO2H, Ka = 1.7 X 10^-4) has a pH of 2.56. What is the original molarity of the HCO2H solution
Problem- A .1 M NaC2H3O2 solution gave a 7.77 pH meter reading. Use the concentration and pH reading to approximate the Ka for acetic acid. Show calculations.
If we too EXACTLY 1.00mL of a 1.000 M solution of Cu(NO3)2 and placed it in 99.000 Ml of water and mixed it, then took 2.00 mL of this solution and plced it in 18.000 mL of water, A) what is the concentration (in mole/L or M) of Cu2+ and NO3 in th..
A sample of oxygen gas has a volume of 545 mL at 35°C. The gas is heated to 151ºC at constant pressure in a container that can contract or expand. What is the final volume of the oxygen gas
Organic chemists rely heavily on the spectroscopic methods of IR and NMR. Explain in great detail why the two methods have to be used in tandem to
Three gases (8.00 gof methane, CH4, 18.0 g of ethane, C2H6, and an unknown amount of propane, C3H8) were added to the same 10.0-Lcontainer
Find out the commentator of the operators for the square of position as well as the square of momentum in the x direction. Explain what can you tell from your result
Explain which of the following substance has the lowest melting point
at a fixed temperature equal moles of so2 g and o2 g are mixed in a constant pressure container the volume of the
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