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A welder using a tank of volume 7.90×10?2m3 fills it with oxygen at a gauge pressure of 3.00×105Pa and temperature of 38.8?C, Initial mass of oxygen is 0.391 kg, Find the mass of oxygen t
Draw a structure of the species that is formed at the lower PH if the acid proton adds to the azo nitrogen atom adjacent to the aromaic ring containing the SO3- group. Why does the proton adds to th
What military skills made Central Asian nomads hard to defend against?
The lab is synthesis of Methyl Red. The question is that diazonium salts cople with phenols in slightly alkaline solution. What effect does the PH of the solution have on reactivity of the phenol
A clean and dry core sample weighing 425 g was 100% saturated with a 1.07 specific gravity brine, Calculate the porosity of the rock sample
In contrast to many of the religions we are studying this semester, Daoism is adamant about the Dao ("Way," "Energy," "Process") being indescribable and totally beyond "rational" thought.
Given that the weight of dry sandstone sample in air is 20.0g, the weight of saturated sample in air is 22.5g, What is the bulk volume of this sample and what is its porosity
What is the solubility of MnS, in grams per liter, in a buffer solution that is 0.115M HC2H3O2 - 0.505 M NaC2H3O2? For MnS, Kspa=3x10^7.
An automobile and a truck start from rest at the same instant, with the automobile initially at some distance behind the truck, What is the speed of the truck when they are abreast, How far was the au
What main Politcal and Economic effects did cell phones have in the U.S. and International?
Calculate the concentrations of all species in a 0.700 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10-2 and Ka2 = 6.3× 10-8.
We have learned that Buddhism, like many other religions, has many different sects. Look over the material on Theravada, Mahayana and Vajrayana that is in the notes and in your book.
A 0.464 g sample of a compound containing the elements carbon, hydrogen, oxygen, and sulphur was burned completely, yielding 0.969 g CO2 and 0.198 g H2O. In a separate experiment, all the sulphur in
2 mol of a diatomic ideal gas expand adiabatically and quasi-statically. The initial temp of the gas is 300K, What is the final temp of the gas
DNA is thought to be the chemical compound responsible for the process of heredity. A sample of DNA was found to have density 1.10 g/cm^3 and its molecular weight was estimated to be 3.04 x 10^8 g.
Two in-phase loudspeakers are located at (x, y) coordinates (-2.5 m, +2.0 m) and (-2.5 m, -2.0 m), Determine the amplitude of the sound at the five positions on the y-axis (x = 0) with y = 0.0 m, 0.5
What is the pressure in kilopascals in s 38.0L balloon st 22 C filled with hydrogen produced by the reaction of 854.25 g of potassium with water
What is the molarity of an unknown gas that weighs 0.110 g in a 63.5mL container at 752 torr and 23 C
How much PV work is done, and what is the value of ΔE for the reaction of .50 mol of H2 with .25 mol of O2 at atmpospheric pressure if the volume change is -5.6L
One mole of a monatomic ideal gas is adiabatically expanded from 2.23 L to 5.78 L. Calculate the q, w, Delta U, delta S, and delta H for this process
A fish hanging from the bottom of the spring oscillates vertically at a frequency of 2.55Hz, Ignoring the mass of the spring, what is the mass m of the fish
Calculate the hydronium concentration for a solution prepared by dissolving 0.15 mol of benzoic acid (C6H5COOH) and 0.30 mol of sodium benzoate (C6H5COONa) in 1.00 L of solution. (Ka of C6H5COOH = 6
The ion-accelerating voltage in a particular quadrupole mass spectrometer is 5.00 V. How long will it take a singly charged cyclohexane ion to travel the 15.0 cm length of the rod
Calculate the average bond energy of one O3 bond. What wavelength has just the right amount of energy to break the bond
What do you believe is the single greatest contribution from any of the civilizations of Mesoamerica and Andean South America to today's world? Explain your answer