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Problem- Can column chromatography is used to separate non-colored compounds?
Please define briefly. Thank you
which solution can conduct an electrical current?
1. if a chemical cold pack weighing 28grams and at a temperature of -2c was left in a 25c room for 3 days what would be
25.0 ml of ethanol density 0.789 gml initially at 7.4degc is mixed with 32.1 ml of water density 1.0 gml initially at
Explain which of the five cobalt complexes, [Co(NH3)5X]^y+ (where X is one of the five ligands, Br-, Cl-, F-, H2O, or NH3 and y is the magnitude of the positive charge) will absorb the shortest wavelength of light
1. prior to placing a 5.158 g piece of metal into the graduated cylinder the level was 5.0 ml. after adding the metal
What electron transition in a hydrogen atom, ending in the orbit 4, will produce light of wavelength 1640 nm
what kind of inter-molecular interactions would likely dominate? explain your reasoning
in the formation of diacetylferrocene the product is always the one in which each ring is monoacetylated. why is no
a 4.50-g sample of licl at 25.0 degc dissolves in 25.0 ml of water also at 25.0 degc . the final equilibrium
oxygen are mixed according to the equation 2 H2 + O2 = 2 H2O, which is the limiting reagent
Why is it particularly important in the experiment "kinetic an thermodynamic control of a reaction" that the semicarbazones be dry before their melting points are determined
At 131 celsius and 769 mmHg, 2.00 L of the gaseous compound weighs 4.44 g. What is the molecular formula for the compound?
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