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A gas mixture contains helium and oxygen at respective partial pressures of 255 torr and 0.450 atm. What is the total pressure in mm Hg of the mixture?
At 25 oC the solubility of copper(II) iodate is 3.27 x 10-3 mol/L. Calculate the value of Ksp
Given that the atomic mass of carbon is given as 12.0107 g/mol, what are the approximate relative abundances of the two isotopes 12C and 13C?
What is the partial pressure of hydrogen and nitrogen when the gas mixture is composed of 8.00 g hydrogen and 56 grams nitrogen.
Important information about Conceptual Organic chemistry and What chemical tests might be used to distinguish between pentanal and 2- pentanone; between benzyl alcohol and diphenylmethanol?
A feed mixture weighing 200 kg of unknown composition containing water, acetic acid, and isopropyl ether is contacted in a single stage with 280 kg of a mixture
Find the molarity of a Ca(OH)2 solution,given that 388 mL of it is neutralized in a titration by 117 mL of 0.0058 M HNO3.
If 2.3g of sodium reacted with 1.8 of water, what would be the total mass of sodium hydroxide and hydrogen produced?
if you lived in the mountains where the atmospheric pressure is 685 mm Hg, what would the partial pressure of oxygen and of nitrogen be ?
N2H4+3O2----2NO2+2H2O The limiting reagent is O2 how many kg of NO2 are produced from the reaction of 75kg of the limiting reagent.
Consider the following data: expect a BeF2 molecule to be linear but an SF2 molecule to be angular. Explain the decreasing melting point from NaF to Nai.
a sample of a binary compound of boron and chlorine weighing 2.842 g occupies .153 L. this sample is decomposed to give 0.664 g solid boron and enough gaseous chlorine to occupy .688 L at the same temperature and pressure. determine the molecular ..
The biochemical oxygen demand (BOD) is the capacity of organic and biological matter in natural water to consume oxygen. It is determined experimentally by measuring the oxygen concentration in a sealed sample before and after a 5-day incubation p..
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