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Conversion of 0.55 g of liquid water to steam at 100 degrees Celsius requires 1.2 kJ of heat. Calculate the molar enthalpy of evaporation of water at 100 degrees Celsius.
a metal cube having a mass of 19.51 grams is dropped into a graduated cylinder containing 9.50 ml of water. this causes
The normal boiling point of hydroquinone is 310°C. Calculate the pressure at which hydroquinone will boil at 200°C given that its Hvap is 73.38 kJ/mol.
Explain what are the possible manipulation errors that might contribute to the errors in results of obtaining a larger amount of NaCl than was present in the original sample
There is an increase in temperature of 56 K. Calculate the heat lost or gained by the system in response to this change in the external temperature. Express your answer in J. Heat capacity for Helium = 20.8 J/(mol K) Molecular weight for Helium = ..
what is the possible maximum milligrams of hydrogen cyanide
Draw the orbital structures (single bond and Pi bond ) in the molecules C2H6 and C2H2. Discuss the difference between a single bond and a Pi bond and the conditions under which they form
nonbonding domains, polarity, intermolecular attractive forces, and which IMAF is the most important
The highest principle quantum number of period 3 elements is 4. 5. Period 3 elements have six 2p electrons. 6. The valence electrons of group 2A elements are in an s subshell. 7. The valence electrons of group 5A elemnts are in the 6s subshell. 8...
A protein biochemist attempted to determine the amino acid sequence of a decapeptide. Use the results from the trypsin, chymotrypsin, and cyanogen bromide treatments to suggest the amino acid sequence of this decapeptide.
ch4 is one of the most important anthropogenic greenhouse gases but it has significant biogenic sources 50 of the
Outline an energy level diagram showing the d-orbital splitting, and label all orbitals and give symmetry designations for the two d-orbitals sets.
Does an enthalpy change from saturated vapor at 450 °F to 210 °F and 7 psia represent an enthalpy increase or decrease. A volume increase or decrease
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