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Acid strength decreases in the series HI > HSO4- > HF > HCN. Which of these anions is the weakest base?
One of the emission spectral lines for Be3+ has a wavelength of 253.4 nm for an electronic transmission that begins in the state with n = 5
A room contains 47kg of air. How many kilowatt-hours of energy are necessary to heat the air in the house from 7 degrees celsius to 26 degrees celsius
Choose the element with more negative (more exothermic) electron affinity from each of the following pairs.
As gas expands from 1.00 L to 2.50 L against constant pressure of 820 torr. Calculate the change in internal energy for the gas, if 120 J of heat is transferred to the gas during the expansion.
Explain why it is appropiate to group a polyatomic ion in parenthses in a chemical formula, if more than one of that ion is present in the formula.
Given the following thermochemical equations, C2H2(g) + 5/2 O2(g) -----> 2CO2(g) + H2O(l) enthalpy = -1299.5 kJ
Infrared (IR) spectroscopy analysis: please refer to the IR spectra on the last page. a) One of the IR spectra was taken of 1-decene, and the other of decane. Which is which?
At 100 ?C the vapor pressures of hexane and octane are 1836 and 354 torr, respectively. A certain liquid mixture of these two compounds has a vapor pressure of 666 torr at 100 ?C. Find the mole fractions in the liquid mixture and in the vapor phas..
you add 1.65L of water to 112g of sodium acetate. what is the molarity of the sodium acetate in the solution
What technology or combination of technologies would you recommend for treating the following contaminated air streams?
A galvanic cell has an iron electrode in contact with 0.11 M FeSO4 and a copper electrode in contact with a CuSO4 solution.
to what pressure should you fill the acetylene tank to ensure that you run out of each gas at the same time? Assume ideal behavior for all gases.
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