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What formula would you use to calculate vapor pressure of the solution 70 celsius. The vapor pressure of pure water at 70 celsius is 233.7 torr?
Calculate the height of a column of methanol that would be supported by atmospheric pressure. The density of methane is .787 g/cm^3.
Calculate the cell potential after the following volumes of 0.1000 M Cr2+ is added to 50.00 mL of 0.1000 M Fe(CN)63-
Explain why an electron in the bonding molecular orbital in the H2 molecule has a lower energy than an electron in the 1satomic orbital
The multiple components of crude oil are separated by a process called fractionation (fractional distillation) at petroleum refineries.Rank (or arrange) the following petroleum products according to their increasing risk of fire and explosion at room..
Assume that .20 mol of the acid is added to 250 mL of water. To make a buffer of pH = 4, how many moles of the conjugate base must be added to the solution?
The molar mass of an unknown salt is 75.6. If 2.29 g is added to 71.2 mL of water the temperature changes from 20.70oC to 21.39oC. What is the molar heat of solution (J/mol) of the salt?
total reaction solution volume of 100 ml and use 1M HCl acid and 1M sodium Hydoxide. how do you accont for their different delta t and q neutralization?
devise a general method for determining the fractional abundances of two or more isotopes from a mass spectrum. your method must include some means of measuring the signals
convalent bonds form when a 2 nonmetals combine b2 metals combine c a metalloid bonds to a nonmetal d a and c are true
Consider a system with four energy levels: 0E, 1E, 2E, 3E, where E is kT (E can be represented by epsilon and T is 100K). Assume that there are 10 particles. Provide an expression for energy, heat capacity and entropy. Plot all as a function of T
Find the standard enthalpy of formation of ethylene, C2H4(g), given: heat of combustion = -1411 kJ/mol, Hf [CO2]= -393.5kJ/mol, Hf [H2O]= -285.5kJ/mol
An old saying about electrical safety states that you should keep one hand in your pocket when working with electricity. What does this mean? Why will transformers not operate on direct current?
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