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A 0.184 mol sample of a mixture of N2 as well as CO2 with a total pressure of 834torr was exposed to an excess of solid CaO, which reacts with CO2 as per to the equation CaO(s) + CO2(g) CaCO3(s) subsequent to the reaction was complete the pressure of the gas had dropped to 313torr. Explain how many moles of CO2 were in the original mixture? Presume no change in volume or temperature. Moles CO2
What is the molarity of a solution made from 23.1g of NaNO2 dissolved in enough water to make 500ml solution
What is the pH of this solution? (Include activity coefficients in your calculation.) What is the fraction of dissociation of butanoic acid in this solution?
What is the pH of an aqueous solution with a hydrogen ion concentration of [H ] = 1.6 × 10-9 M? b) What is the hydroxide ion concentration, [OH-], in an aqueous solution with a hydrogen ion concentration of [H ] = 1.6 × 10-9 M?
Describe the error that would occur if the magnesium were to slide into the HCl in the test tube before the system is sealed off.
Calculate the expansion work done against a constant external pressure of 0.991 atm and at a constant temperature of 18°C. Assume that the initial volume of dry ice is negligible and that CO2 behaves like an ideal gas.
student placed 18.5 of glucose in a volumetric flask added enough water to dissolve the glucose by swirling then
How do I express quantities using significant figures to imply errors. An example question is 1.989 +/- 0.0003
How would the Rf values change if you used pure dichloromethane ( no methanol ) as the mobile phase for the TLC separation of curcumin
a system at equilibrium or striving to reach equilibrium responds in a way that best accommodates or reduces any stress
Draw the Lewis structure of formic acid, HCO2H. (Hint: C is the central atom. One of the H is bonded to an O.) How do we know which of the possible structures for HCO2H is more likely to be correct?
Explain why does the acid catalyzed alpha halogenation of ketones always stopped at the monhalogenation step while the base catalyzed process always results in the exhaustive alpha halogenations
Ethylene glycol, HOCH2CH2OH, is used as antifreeze. It is produced from ethylene oxide, C2H4O, by the following reaction. C2H4O(g) + H2O(l) HOCH2CH2OH(l)
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