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Hexane has a normal boiling point of 68.7 C. What is the mole fraction of a nonvolatile solute in a hexane solution which has avapor pressure of 600 torr at 68.7C?
The products of a specific reaction and the side products or impurities? Explain specifically what would be observed for this pair of compounds: 4-bromoacetanilide and 2-bromoacetanilide
When 0.170 g of the hydrate CaCl2•xH2O is heated, 0.128 grams of anhydrous CaCl2 remains. What is the value of x in the formula for the hydrate?
How many grams of O2 are needed to react with 18.5 grams of Mg? 2 Mg(s) + O2(g) → 2 MgO(s)
If the heat of fusion os X is 80.0 J/g, the heat of vaporization is 190.J/g, and if 3.5 J are required to warm 1 g of X each degree, how much energy will be needed to accomplish the change in a
calculate the nuclear binding energy per nucleon in 6 sig figs,also in joules. 7. For 129Xe, calculate the nuclear binding energy per nucleon in 7 sig.figs also in joules per nucleon.
How many distinct tetrapeptides can be made from the three amino acids leucine, histidine, and valine
determine how do you know if there must be a precipitate or not and Show whether or not a precipitate will form if The Ksp of PbI2 =9.8×10-9
Oxygen gas can be generated by the decomposition of potassium chlorate according to the following equation: 2KClO3(s) = 2KCl(s) + 3O2(g). How many liters of oxygen at STP will be produced when 0.216 kg of KCl is also produced
Check your gas chromatogrm for the presence of compounds other than isopentyl acetate. Explain the presence of any additional
The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 7.50 mL of a 0.350 M HCL solution to the beaker. How much will the pH change? The pKa of acetic acid is 4.760.
1.60 M solution(78.0 mL ) is diluted to a volume of 278 mL and a 139-mL portion of that solution is diluted using 175 mL of H 2 O ,water determine the final concentration?
Write the net ionic equations and determine the standard potentials for the reaction of copper or zinc with tin (IV). Which of the two reactions should be spontaneous
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