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Physical!Separations!- Candy!Chromatography
Goals
1. To physically separate and identify dyes in candy by comparison to commercial food dyes using paper chromatography.
2. To become familiar with common lab equipment and techniques.
Prepare a molecular orbital energy level diagram for NO, showing clearly how the atomic orbitals interact to form MO's b) How does the diagram illustrate the difference in electronegativity between N and O
What is the isentropic work required for the ideal gas case? C) If the comppressor has an efficiency of 0.78 and is NON-ideal, what is the final temp and required work?
If we inject 120.0 mL of liquid helium and allow the entire system to warm to room temperature (25°C), what is the pressure inside the bottle
Alcohols can be oxidized by chromic acid derivatives. One such reagent is pyridinium chlorochromate, (C5H5NH )(ClCrO3-), commonly known as PCC
Lithium has two stable isotopes with masses of 6.01512 u and7.01600 u. The average molar mass of Li is 6.941 u. Explain what is the percent abundance of each isotope
What would the lewis dot structure be for 2Cl molecule + 2Iodied ion, and can you show me the polarity on both for reaction and after formation
A 13-g sample of calcium reacts with bromine to form 24g of calcium bromide. How many grams of bromine are used in the reaction?
assume you dissolve .297 g of the weak acid benzoic acid in enough water to make 105 mL of solution and then titrate the solution with .141 M NaOH. What are the concentrations of Na+ at the equivalence point?
when 31 mL of 0.200 M HCl has been added to 39 mL of 0.0500 M NH3 solution? HCl is strong acid, Kb = 1.8 × 10-5 for NH3
Question- Calculate the mass (g) of a sample of water that lost 25110 J of heat energy on going from an initial temperature of 16.5 °C to a final temperature of 8.10 °C.
blocks of concrete 10m long are placed end to end with no space in between them to allow for expansion. if the blocks
Without referring to a periodic table, write the electron configuration of the elements with the following atomic numbers Z=9, Z=20, Z=26,Z=33
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