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If 4 mol of a gas at 100 K and 1 atm occupies a volume of 2.5 L, what would the pressure be, in atm, if the volume decreased to 2.0 L and the temperature increased to 110 K?
A binary ionic compound, MxAy, crystallizes in a cubic structure that contains eight anions (A) entirely within its unit cell and a cation (M) on each corner and on each face. What is the empirical formula of this compound. The answer is MA2 Pleas..
You want to prepare 250 ml of buffered solution composed of NH3 and NH4Cl with a pH of 10.1. If you start with 250 ml of 0.15 M NH3 solution, how many grams of NH4Cl salt must you add. Round answer to two decimals.
at a particular temperature and a0 2.00 x 10-2 concentration versus time data were collected for this reaction and a
What are the main greenhouse gases? What is the present level of atmospheric carbon dioxide? Why has carbon dioxide concentration risen since 1860?
Suppose that all 175 L of liquid nitrogen in a tank accidentally vaporized in lab that measured 10.00 m X 10.00 m X 2.50 m. What maximum fraction of the air in the room is displaced by the gaseous nitrogen?
Home ice cream makers use ice to cool a concentrated NaCl solution below the normal freezing point of water. What molal concentration of salt is needed to lower the freezing point to -4.49 C?
if you are performing both an atmospheric distillation and a vacuum distillation in the same experiment: a. The atmospheric distillation is done first.
For an ensemble consisting of a mole of particles having two energy levels separated by 1000. cm-1, at what temperature will the internal energy equal 2.90kJ?
at 80 degc the vapor pressures of pure liquids x y and z are 385 190 and 66 mm hg respectively. what pressure must be
The thermochemical equation for the burning of ethyl alcohol is C2H5OH(l) + 3O2(g) --> 2CO2(g) + 3H2O(l) ?H = -1,367 kJ What is the enthalpy change (in kJ) for burning 9.68 g of ethyl alcohol
hydrocarbons are often reacted with steam to form h2 as shown for propanec3h8g 6 h2og ltgt 3 co2g 10 h2gcalculate kp
Draw structure of the product(s) (show stereochemistry) of bromine addition to fumaric acid assuming that bromine adds to this compound the same way it does to cinnamic acid.
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