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Plan a procedure to seperate 2.0 g of mixture into its components using a flow chart. Using solubility tests, select the correct solvent or mixture of solvents to crystallize 4-chloroaniline.
Determine heat of neutralization per mole of water formed for the reaction of NaOH and HCl with the following data
when 2.45g of an unknown weak acid ha with a molar mass of 85.0gmol is dissolved in 250.0g of water the freezing point
A sample of nitrogen gas is contained in a piston with a freely moving cylinder. At 0 C,the volume of the gas is 361 mL. To what temperature must the gas be heated to occupy a volume of 492 mL.
Determine the molar mass of the acid and given that the pH at the half way point to the equivalence is 3.86. Calculate the Ka of the unknown acid.
Ethan contain 2.659 carbon and .668 gm of H, and one sample of acetylene contains 4.59 g of carbon and .382 gm of h. write emperical formula for ethane , acetylene
Compound A, C9H12, undergoes nitration to give 3 products. The 1H NMR spectrum of A shows a complex three-proton multiplet at 6.92-6.99 ? and a nine-proton singlet at 2.34 ?
The Ksp for BaCO3 is 5.0 x 10-9. What is the molarity of a saturated aqueous solution of BaCO3
which of the following combinations of hybridization and molecular geometry is possible?1. sp3 trapezoidal2. sp3
if you look up the melting point of phenylsuccinic acid you will find it to be 167-169 degree. your product probably
silver has an average atomic mass of 107.87 u. if 48.18 of ag exists as ag-109 108.9047 u what is the identity and the
a solution is prepared by dissolving 20.0 g of NaI in enoug water tomake 300.mL of solution How many moles of ions are in 25.mL of thesolution?
Use two separate t tests to compare results from lab Coat with those from lab A and lab B at the 95% confidence level. Comments on the sensibility of the time test results.
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