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The reaction, M2O3(s) + C(s) ? M(s) + CO2(g), is spontaneous at low temperatures but non-spontaneous at high temperatures. If we assume that, since the physical states do not change, the values of ?HTo and ?STo are constant over a wide temperature range, including 25.0°C, we can deduce that, over this range
1. ΔH > 0 and ΔS > 0.
2. ΔH < 0 and ΔS < 0.
3. ΔH > 0 and ΔS < 0.
4. ΔH < 0 and ΔS > 0.
Please explain why you think so as im contemplating with two of the choices provided.
Calculate the number of grams of aluminum required to prepare 500.0g of chromium metal.
The energy required to dissociate the H2 molecule to H atoms is 432 KJ/mol H2. If the dissociation of an H2 molecule were accomplished by the absorption of a single photon whose energy was exactly the quantity required , that would be its wavelend..
Find the pH of the resulting solution when 20.00mL of a 0.1000M triethylamine (CH3CH2)3N (Kb = 5.2x10-4) solution is titrated with 20.05mL of a 0.1000M HCl solution.
You have a stock solution of 14.8 M ammonia. How many milliliters of this solution should you dilute to make 804 mL of a 1.64 M ammonia solution
express the velocity of the electron in the Bohr model for fundamental constants, the nuclear charge Z, and the quantum number n. Evaluate the velocity of an electron in the ground states of He+ ion and U91+.
Calculate the total mass of acetic acid dissolved in the solution contained in the volumetric flask (f) The mass(g) of acetic acid dissolved in the solution contained in the volumetric flask came drom the 25.00 ml vinegar sample.
what do you think Does it mean that their properties also differ from a classical model of matter?
EDTA solution to reach the end point in a titration. What mass (in milligrams) of CaCO3 (FW = 100.09 g/mol) will react with 1.85 mL of the EDTA solution?
a sample of a mixture of kclo3 and kbr weighing 7.0950 g is heated in the presence of a small amount of mno2 which acts
an aqueous cacl2 solution has a vapor pressure of 82.1 mmhg at 50 c . the vapor pressure of pure water at this
Assuming that the formal charge on the central atom can't be larger than +/- 1, what is the number of important resonance forms for this ion
A 51.0 g sample of ethylene glycol, HOCH2CH2OH, is dissolved in 540.0 g of water. The vapor pressure of water at 32°C is 35.7 mm Hg. What is the vapor pressure of the water-ethylene glycol solution at 32°C? (ethylene glycol is nonvolatile.)
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