Partial pressure of argon and ethane
A 1L flask is filled with 1.00 g of argon at 25 C . A sample of ethane vapor is added to the same flask until the total pressure is 1.20 atm. What is partial pressure of Argon and ethane in the flask?
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A 35.0-mL sample of 0.20 M LiOH is titrated with 0.25 M HCl. What is the pH of the solution after 23.0 mL of HCl have been added to the base?
A 93-L sample of dry air cools from 145 degrees celicus to -22 degrees celicus while the pressure is maintained at 2.85 atm. What is the final volume?
A student calculates the density of iron as 5.72 g/cm3 by using lab data for mass and volume. A handbook reveals that the correct value is 7.86 g/cm3. What is the percentage error?
Ozonolysis of A followed by dimethyl sulfide reduction produces a single optically active compound C, C5H8O2. Reduction of C with ethereal LiAlH4 affords optically active compound D (C5H12O2) of the (S)-configuration.
The label on a popular brand of margarine states it is made from "partially hydrogenated" corn oil. Which statement is false?
Atomic Masses. (6 pts) An element has two naturally occurring isotopes: Isotope A has a mass of 120.9038 amu and a relative abundance of 57.4%; isotope B has a mass of 122.9042 amu.
What is the Lewis Dot Structure of C2H5Cl
Sodium fluoride (NaF) melts at 993C, whereas sodium chloride fluoride melts (NaCl) at 801C. Explain why this is the case in terms of the strength of the ionic bonds formed in both compounds.
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