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When studying for the HESI exam, the nursing school entry exam, I'm having an issue with the chemistry section as it's the only class I did not take at any point during my 2 year degree. Any suggestions for learning basic chemistry, QUICKLY.
Define internal energy and enthalpy. What is the difference between the two? List the following gases in order of increasing root-mean-square speed, all at the same temperature: H2, He, O2, Ne
Calculate the freezing point of a 0.08500 m aqueous solution of NaNO3. The molal freezing point depression constant of water 1.86 degrees C/m.
Calculate the percent mass per volume for isotonic solutions containing each of the following solutes at 25 degrees Celsius. Assume a van't Hoff factor of 1.9 for all ionic solutes.
how many grams of water can be cooled from 30 degrees c to 18 degrees c by the evaporation of 49g of water? the heat of
Few enzymes have one or more sulfhydryl (thiol) groups that are significant to enzymatic activity but that can react upon standing in solution to form inactive disulfide bonds.
The volume of a 24.0g sample of methane gas is 22.8L at 40.0*C and 4.00atm. What will it's volume be at 68.0*C and 4.00atm.
how many of the following changes wouldalter the numerical value of the equilibrium constant kp for the reaction 2of2g
Define boiling point and explain why boiling liquids and non boiling liquids both have bubbles. Explain why boiling water in Seattle is hotter than bowling water in Denver
Which is the strongest intermolecular force that exists between Br2 molecules? Why is the negatively charged portion of a soap molecule more attracted to calcium and magnesium ions in hard water than its own sodium ion?
what is the purpose of anhydrous cacl2? why it is important that none of the solid cacl2 be included in the final
What is the molarity of a solution made by dissolving 74.8 g of strontium perchlorate in sufficient water
A sample of a flourocarbon gas was allowed to expand to twice its volume. In this reversible, adiabatic expansion, the temperature dropped from 298.15 K to 248.44 K.
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