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How does the chemical structure of the dye relate to the Rf factor? 2. Is TLC an effective way to separate and identify substances? Why or why not?
the water level in a graduated cylinder initially at 224 rises to 287 after a piece of lead is submerged. what is the
given that is the central atom draw a lewis structure of in which the formal charges of all atoms are zero.nbspdraw the
Some of the unknown fails to dissolve b)The thermometer is out of calibration and reads .75C higher than it should over the entire temperature range. c) The test tube is not dried before it is weighed
According to Avogadro's law, how many liters of hydrogen are required to react with 1.9L of oxygen at STP.
The linear form (y=mx+b) of the Arrhenius equation is given below : ln K = -Ea/RT + Ln A 1) In order to find the activation energy (Ea) you will need to make a linear graph
What is the pH of a solution in which 323 mL of HCl(g), measured at 26.8 degrees Celsius and 1.02 atm, is dissolved in 1.5 L of aqueous solution?
When octane is burned in air, it chemically reacts with oxygen gas to produce carbon dioxide and water . What mass of octane is consumed by the reaction of of oxygen gas?
by mistake a quart of oil was dumped into a swimming pool that measures 25.0cm by 30.0cm assume the oil spread entirely
Is the best description of the t2g orbitals in [CoCN6]3- bonding, non-bonding, or antibonding? Explain your choice.
Find N-H bond energy in ammonia using the standard enthalpies of formation N(g)=472,7kJ/mol, H(g)=216.0kJ/mol, NH3(g)=-46.1kJ/mol
Measurement of the concentration of Fe3+ ions in a saturatedsolution of iron(III) chloride was found to be 0.35M. Calculate the Ksp of iron(III) chloride
What length of a cylindrical piece of tungsten wire having a radius of 3.71 mm has a mass of 61.3 g? The density of tungsten is 19.25 g/cm3.
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