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Elemental analysis indicates the simplest formula of an unknown is C2H4O. Explain when 0.775 g of the compound is dissolved in 50 g of benzene (C6H6) the solution freezes at 5.06 degrees Celsius. Explain what are the molecular weight as well as the molecular formula of the compound? The freezing point of pure benzene is 5.48 degrees Celsius as well as it's Kf is 5.12 degrees Celsius/m
24.6g of a hydrated salt of MgSO4.XH20, gives 12.0g of anhydrous MgSO4 on heating. What is the value of x?
draw the mechanism for the reaction between 3-chloroaniline and diethyl ethoxymethylenemalonate.
A gas thermometer has a volume of 83.3 mL at 20 degrees C. After being placed in a container whose temperature is to be measured its volume ( at the same pressure ) dropped to 67.3 mL. The new temperature is?
Use Hess' Law to show how the titration of acetic acid with sodium hydroxide can be expressed as the combination of two reactions: the acetic acid reacting with water, and the sodium hydroxide reacting with hydronium ion.
Calculate the concentration of an NaOH solution if 0.811g of tartaric acid, H2C4H4O6, requires 24.15mL of NaOH solution to reach the equivalence point in a titration.
Two manufacturing plants need 1.0e4 kg of Al each week. One plant produces the Al from bauxite (Al2O3), whereas the other gets its Al from recycled cans.
What information is required in order that you are able to diagram an atom?
it was important that the flask be completly dry before the unknown liquid was added so that water present would not vaporize when the flask was heated.atypical single drop of liquid water has a volume of approximately 0.05ml
Which formula is a correct representation of pentane? What is the organic product of the reaction between ethanol and ethanoic acid? Explain why the incomplete combustion of hydrocarbons is harmful to humans.
Explain what is the empirical formula of the substance that has the following percentage composition 31.6% carbon, 5.30% of hydrogen and 63.1% oxygen
The molar solubility of AgBr in water is 7.31x10^-7 mol dm^-3 at 25C. What is the standard potential of the cell Ag(s)/AgBr(aq)/AgBr(s)/Ag(s) at that temperature
which of the following solutes is likely to be most soluble in water
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