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Consider the reaction NO + O3 → NO2 + O2 Which has a rate constant given by k = 1.8×10-12 e-1370/T cm3 molecules-1 s-1 .Use the following standard heats of formation. Substance ΔH0f (kJ mol-1) NO 90.25 ,NO2 33.18 , O3 142.7 ,O2 0 What is the activation energy of this reaction?
The speed needed to escape the pull of Earth's gravity is 11.3 km/s. What is this speed in mi/h.
Compare alkalide ion with the neutral alkali atom - For a given alkali metal, how does the ionic radius of the alkalide ion compare to that of the neutral alkali metal atom? Explain using physical arguments.
what is the maximum amount of P4S10(444.545 g/mol) which could be formed from 17.12 g of P4 (123.895 g/mol) and 0.137 mol of S8 (256.52 g/mol).
How many moles of HCl need to be added to 150 mL of 0.50 M NaZ to have a solution with a pH of 6.50? (Ka of HZ is 2.3e-5). Assume negligible volume of the HCl.
If 4.00 g of the unknown compound contained 0.133 mol of C and 0.267 mol of H, how many moles of oxygen, O, were in the sample?
C6H5NH3Cl is a chloride salt with an acidic cation. If 19 g of C6H5NH3Cl is dissolved in water to make 150 mL of solution, what is the initial molarity of the cation.
How much heat is required to raise the temperature of a 464g of lead from -20.0C to 219C
For the following reaction, 5.21 grams of nitrogen gas are allowed to react with with 5.51 grams of hydrogen gas.nitrogen (g) + hydrogen (g) ammonia (g),What is the maximum amount of ammonia that can be formed.
Determine how much fluorine was formed if A sample of NaF(sodium fluoride) produced 26.5 grams of sodium upon decomposition? express your answer (in grams)
A 0.0490 molal aqueous NaBr solution freezes at -0.173°C. What is its apparent percent dissociation in this solution? Kf = 1.86°C/m for water. NaBr -> Na+ + Br-
When an outside plastic envelope is removed, O2 molecules penetrate the paper causing the reaction to begin. A Typical packet contains 250 grams of iron to warm your hands or feet for up to 4 hours.
how many moles of gas are contained in a compressed air tank for a suba diving that has a volume of 7.0 L and a pressure of 210 atm at 25 0C .
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