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How can I determine with DRAWINGS or DIAGRAMS the composition of a phase, and the amount of the phases in a mixed phase region? Please, identify the starting alloy in terms of hypo eutectic or hyper-eutectic alloy. Show how to use the lever rule, so can I determine the composition of the phases and their relative amounts, in two different mixed-phase regions, for the same alloy.
Acetylsalicylic acid (aspirin), HC9H7O4, is the most widely used pain reliever and fever reducer in the world. Find the pH of 0.018 M aqueous aspirin at body temperature (Ka at 37°C = 3.6 10-4).
what is the molarity of a solution when 2.25g NaF is dissolved in enough water to make 250mL of solution
a sample of neon to escape from a hole in a container, how long would it take for an equal amount of nitrogen gas, N2, to escape
What weight of glucose in grammes is required to make 675 ml of a 750 mM solution. Glucose Mr = 180.16
The enthalpy of vaporization of water is 40.67 kJ/mol, the enthalpy of fusion for water is 6.01 kJ/mol, the molar heat capacity of liquid water is 75.4 J/(mol.C)
Liquids cannot be compressed easily. What does this imply about the amount of space that must be present between the individual liquid particles?
a large cylinder of He gas,such as that used to inflate balloons,has a volume of 25.0 L at 22c and 5.6 atm. How many moles of He are in such a cylinder
When there are branches in either the acid or the alcohol, how do you name the ester formed from the reaction of these two? For example,
Calculate the pressure of the gas mixture and the partial pressure of each constituent gas if the mixture is in a 11.0 L vessel at 27 degree celsius
Write the complete stepwise mechanism for the reaction of cyclopentanone with bromine in acetic acid to give 2-bromocyclopentanone
Teeth are made principally from the mineral hydroxyapatite, Ca5 (PO4)3OH, which can be dissolved in acidic solution such as that produced by bacteria in the mouth:
What is the number of moles of atoms of oxygen contained in 49 grams of sulfuric acid, H2SO4?
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