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Compute the amount of heat needed to completely sublime 96.0g of solid dry ice (CO2) at its sublimation temperature. If the heat of sublimation for carbon dioxide is 32.3 kJ/mol.
Check that in the collision of two structureless molecules the order of magnitude of the pre-exponential factor is of the same order as that predicted by collision theory. Go on to estimate the P factor for a reaction in which , and A and B are no..
One mole of an ideal gas is contained in a cylinder with a movable piston. The temperature is constant at 77°C. Weights are removed suddenly from the piston to give the following sequence of three pressures
calculate the mass of a sample of gold that occupies 5.0 x 10 (exponent -3) cm cubed. the denisty of gold is 19.3 g/cm cubed.
When NH3 is prepared from 28 g N2 and excess H2 the theoretical yield of NH3 is 34 g. When this reaction is carried out in a given experiment, only 30. g is produced.
what is the root-mean-square molecular speed of a gas molecule of this smelly gas molecule at 25C?
How many moles of oxygen are formed when 58.6 g of KNO3 decomposes according to the following reaction. The molar mass of KNO3 is 101.11 g/mol. 4 KNO3(s) ? 2 K2O(s) + 2 N2(g) + 5 O2(g)
How many additional milliliters of titrant are needed to reach the first equivalence point of quinidine dihydrochloride. What is the pH at the first equivalent point
consider the titration of 100.0 ml of 0.100 m h2nnh2 kb 3.0 multiplied by 10-6 by 0.200 m hno3. calculate the ph of
The reaction shown above has been determined to be first order with respect to N2O5. If 0.0250 moles of N2O5 are charged into a 2.00 L vessel, explain how many moles will remain after 150 seconds if the rate constant is 6.82 x 10-3 s-1 at 70 oC
Compare the molar solubility of AgOH in pure water, with that in a solution buffered at pH 7.00. Note the difference between the two cases: when AgOH is dissolved in pure water, the pH does not remain at 7. The value of Ksp for AgOH is 1.5x10-8 at..
calculate the osmotic pressure in mm hg of 6.00 l of an aqueous 0.889 m solution at 30.degc if the solute concerned is
What is the Cu2+ concentration at 25*C in the cell Zn (s) I Zn2+ (1.0M) II Cu2+ (aq) I Cu(s)? The cell potential is 1.04 V. The standard cell potential is 1.10 V.
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