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Problem- A 5.50 L of sample of gas is cooled from 91 degrees Celsius to a temperature at which its volume is 4.10 L. What is this new temperature? Assume no change in pressure of the gas.
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A 10mL solution of .3M NH3 is titrated with a .1M solution of HCL. Compute the pH after the subsequent additions of the HCL solution. a) 0mL b) 10mL c) 20mL d) 30mL. Explain how to set up the chemical equation for the initial reaction when you are..
In a particular solution, [Cr3+]=3.9x10-4 mol/L. What is the minimum pH at which Cr(OH)3(s) will precipitate from this solution. Assume the temperature is 25oC. For Cr(OH)3(s), Ksp=6.3x10-31 at 25oC. Give your answer with three digits
You have a box of volume 1.00 liter into which you inject 2.65g of NH3 at 600K. What will be the final concentrations of NH3, N2, and H2 after equilibrium is established
explain how to correct for the partial of water vapor when calculating the partial pressure of a dry gas is collected
In its crystalline form, hemoglobin has a spherical shape with a radius of 2.75 nm. In aqueous solution, the hydrated radius of hemoglobin is found to be 3.55 nm. How many water molecules hydrate a hemoglobin molecule
Calcium nitrate will react with ammonium chloride at slightlyelevated temperatures, as represented in the equation- Ca(NO3)2(s) +2NH4Cl(s) 2N2O(g) +CaCl2(s) + 4H2O(g)
what gas escaped during the sodium bicarbonate washing? write balanced equations for two reactions that took place
Explain the following given for each statement in determining the sequence of peptide with concise (short) but complete response. you must state the specificity of each statement implication in determining the sequence of octapeptide
How much heat (in kilojoules) is evolved or absorbed in the reaction of 2.45 of with enough carbon monoxide to produce iron metal?
Explain what volume of a concentrated HCL solution, which is 36.0% HCL by mass and has a density of 1.179 g/mL, must be used to make 5.30L of an HCL solution with a pH of 1.7
Hydrogen peroxide undergoes a first-order decomposition to water and O2 in aqueous solution. The rate constant at 25 °C is 7.40 * 10-4 s-1. Calculate the volume of O2 obtained from the decomposition of 1.00 mol H2O2 at 25 °C and 740 mmHg after 20...
The isotope, carbon-14, is a very interesting isotope to study because of how ubiquitous carbon is in living organisms. However, isolating 14C from 14N can be very challenging.
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