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What would be the change in pressure in a sealed 10.0 L vessel due to the formation of N2 gas when the ammonium nitrite in 3.0 L of .700 M NH4NO2 decomposes at 25 degrees C? NH4NO2 --> N2 + 2 H2O
The energy levels the electron can occupy in the Be3+ ion can be calculated using the energy level equation. Calculate the energy in J of the electron when it is in the n= 4.00 level.
How much heat is required to melt 15 grams of ice at 0C? How much heat is released when 100 grams of steam condenses at 100C? If a system of ice and water has a mass of 12 grams
The extrapolated literature value of KEQ for the formation of FeNCS^2+ at 25 degrees C and zero ionic strength is 1047. Predict the equilibrium concentration
5 ml of 0.05 M CuSO4 solution was mixed with 5 ml of 3 M NH3 solution.Calculate [Cu2+] in equilibrium with Cu(NH3)4^2+. Experimentally the cell potential was found to be 0.387
A compound has a C nmr spectrum with peaks at 7.4, 28.9, 36.4, and 208.8. The H nmr has peaks at 1.05 (t, .6), 2.13 (s, .58), 2.47 (q, .39). What is the compound?
how does a water softener work chemically? What's better to drink tap water or bottle springwater and why?
A 10.1 g sample of CaCl2 is dissolved in 119 g of water, with both substances at 25.0°C. Calculate the final temperature of the solution assuming no heat lost to the surroundings and assuming the solution has a specific heat capacity of 4.18 J/°C·..
What is the pH of the pyridine solution before you begin titrating? B) What is the pH after 75.0mL of the hydrochloric acid solution has been added?
Converting Voltages, Convert the following voltages. Assume the silver-silver chloride and calomel reference electrodes are saturated with KCl, giving cell potentials of +0.197 V and +0.241, respectively.
What mass of CCl2F2 substance must evaporate in order to freeze 135 g of water initially at 15 degrees celsius? (The heat of fusion of water is 334 J/g the specific heat of water is 4.18 J/gK .)
if a molecule of a neon gas travels at an average of 400.m/s at a given temperature, estimates the average speed of a molucule of butane gas, C4H10, at the same temperature.
Determine the volume of .450M NaPO4 is needed to precipitate all the lead(II) ions from 190.0mL of .550M Lead(II) nitrate?
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