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Question:
If the formula for a compound is represented by X2Y3 and the charge on the Y ion is -2, what is the charge in the X ion?
an unknown monoprotic acid is titrated with 38.10mL of 0.265 M NaOH. Calculate the molar mass of the acid.
Suppose you measured the product of PV of 1 mol of a dilute gas and found that PV= 27.54 L atm at 0.00 C and 37.32 L atm at 100 C.
Explain what the approximate ranges Eg in eV for different colors--color meanings black, white, or actually having a true color green yellow, blue and so on.
A person is exposed for three days to identical amounts of two different nuclides that emit positrons of roughly equal energy. The half-life of nuclide A is 18.5 days and the half-life of nuclide B is 255 days.
Explain, using resonance as part of your answer, why a hydrogen adjacent to carbonyl groups (a-H's) are acidic. b. Give the mechanism for the Claisen ester condensation reaction.
a solution of cyclohexane and an unknown solute freezes at 3.3c and 1atm of pressure. calculate the freezing point depresson of the solution
A moth-ball, composed of naphthalene (C10H8), has a mass of 1.32 g. How many naphthalene molecules does it contain?
Calculate the internal energy and ethalpy change if the volume is changed from 10L/Mmol to 20L/mol and the temperature is changed from 300k too 600k. Use the vander waals equatino and assume that no phase changes ocurr
Draw the structure of the intermediate hydroxyketone formed by the transfer of one hydride to benzil. Is the intermediate optically active. Explain.
The absorbance at 595 nm was 0.78 and,according to a standard curve, corresponds to 0.015 mg of proteinon the x axis. What is the protein concentration of the original solution?
Problem- Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.220 M HClO(aq) with 0.220 M KOH(aq). The ionization constant for HClO can be found here.
If 33mL of 1.20M HCL is added to 42mL of a solution containing excess sodium hydroxide in a coffee cup calorimeter. The solution temperature, initially at 25.0C, rises to 31.8C. Give a thermochemical equation, including
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