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Calculate the mass of ethylene glycol (C2H6O2) that must be added to 1.00 kg of ethanol (C2H5OH) to reduce its vapor pressure by 13.6 torr at 35°C. The vapor pressure of pure ethanol at 35°C is 1.00 102 torr.
Calculate the pH of a 1.00L of buffer that is 0.120M HNO2 and 0.180M NaNO2. What is the pH of the same buffer after the addition of 1.00mL of 12.0M HCl. (pKa of HNO2=3.04)
Is the reaction exothermic or endothermic? b) Calculate the heat produced when 10.0 g of AlCl3 forms. c) How many grams of Al are required to produce 1.00 kJ of energy?
An uncharacterized compound Z is thought to have an amino group with a pKa of 10.0 and another ionizable group with a pKa between 4 and 7.
Experimental solid-oxide fuel cells that use butane (C4H10) as the fuel have been reported recently. These cells contain composite metal/metal oxide electrodes and a solid metal oxide electrolyte. Consider the following unbalanced half-reactions:
Below is the 1H NMR spectrum of the following triazine structure. In the expansions of the spectrum, place the observed multiplicity in the bin above the resonance.
Calculate the VOLUME (mL) of liquid H2O formed if the reaction goes to completion and you condense the water vapor.
In the experiment aniline and acetic anhydride are reacted to form acetanilide, how do you calculate the theoretical yield of acetanilide?
A certain mixture of He and Ne in a 356-cm3 bulb weighs 0.1480 g and is at 20oC and 748 torr. Find the mass and mole fraction of He present.
what is the net ionic equation potassium hydroxide and iron(III) nitrate.
If 1.32g of al were reacted with an excess HCl, what amount of Hydrogen gas would be theoridocially be admitted at STP?
Gold miners then react the basic aqueous product solution from the above equation with Zn dust to get gold metal. Write a balanced redox reaction for this process.
The wave function for the ground state of the quantum harmonic oscillator
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