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What is the percent yield in a reaction between 53.6 g O2 and 51.6 g Al if 87.3 g of Al2O3 is produced
Graphite is a semi-metal composed of sheets of fused benzene rings. There are no bonds between sheets, only van der Waals interactions
3I2(s) + 2P(s) → 2PI3(s) What is the percent yield of the reaction if 28.3 g of phosphorus triiodide PI3 is obtained when 68.0 g of I2 and 68.0 g of P are mixed and allowed to react.
Derive an equation for the temperature dependenc of the vapor pressure of a liquid (analogous to the integrated form of the Clausius. Clapeyron equation) assuming that the vapor has the equation of state PV=RT+M where M is a constant.
Assuming complete dissociation of the solute, how many grams of \rm KNO_3 must be added to 275 \rm mL of water to produce a solution that freezes at -14.5 ^\circ {\rm C}? The freezing point for pure water
Describe how to prepare BaSO4 by: a. an acid-base reaction b. a gas-forming reaction, and c. an oxidation-reduction reaction. The available starting materials are ZNCO3, HCl, Cl2, HNO3, Zn(OH)2, NaCl, ZN(NO3)2, and Zn.
In solving weak acid equilibrium problems to find [H+] or pH, a major assumption is usually made. This major assumption can be represented by the following
A particular sample of vinegar has a [H3O^+] of 1.26 x 10^-3 M. Assuming that acetic acid is the only acid that vinegar contains (Ka = 1.8 x 10^-5), calculate the concentration of acetic acid in the vinegar.
the following reaction is carried out in a bomb calorimeter 4nh3 g 5o2 g--gt4no g6h2o gthe calorimeter constant is
Benzoic acid can be extracted from an ether solution using an aqueous solution of sodium bicarbonate.
for a certain change, the value of change in U is -2.37kJ. during the change the system absorbs 650 joules. how much work did the system do?
What is the formula of the compound formed by strontium (Sr) and iodine (I)? Answer a. Sr2I b. SrI2 c. SrI d. no correlation between radium and strontium
The equalibrium constant for the reaction AgBr(s) Ag^+(aq)+Br^-(aq) is the solubility product constant, Ksp=7.7x10^-13 at 25 degrees C. Calculate deltaG for the reaction
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