Determining the rate law for the reaction
The rate law for the reaction
NH4+ (aq) + NO2- (aq)------> N2 (g) + 2 H20 (l)
is given by the rate=k (NH4+) (NO2-)
At 25 C, the rate constant is 3.0 x 10^-4/M sec. Calculate the rate at this temperature if (NH4+)=0.26 M & (NO2-)=0.080 M
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which of the following is always spontaneous A. C2H6O + 3O2 = 2CO2 + 3H2O; delta H is smaller than 0 B. the sublimation of dry ice ( CO2) C. the freezing of water (H2O) D. the formation of water from its gaseous elements D. None of the above.
0.50g of Cu 2+ is dissolved in 4.0ml of 16 M HNO3. how much 3.0 M NaOH must be added to precipitate the Cu 2+ as Cu(OH)2
Calculate the pH of a buffer solution that is 0.12 M lactic acid (HC3H5O3)and 0.1 M sodium lactate (NaC3H5O5). Ka for lactic acid = 1.4 x 10-4.
After treating an antacid with 5.00 ml of .1065 M NaOH, the untreated acid was diluted to exactly 250 mL with distilled water in a volumetric flask. 25.00 mL of that diluted acid required 17.03 mL of the same NaOH solution to neutralize it. Calcul
Identify the following as elements or compounds: (a) NH3, (b) N2, (c) CO, (d) Co, and (e) He.
Write ground-state electron configurations for these ions, which play important roles in biochemical processes in our bodies. (Use a noble gas core abbreviation) Na^+, Mg^2+ Cl^- K^+
Fe2O3 + 3CO------2Fe + 3Co2 suppose that 1.14x 10^3kg of Fe is obtained from 1.82x 10^3 kg of samples Fe2O3. Assuming that the reaction goes to completion. What is % purity of Fe2O3 in orginal sample
1) What volume (mL) of Hydrogen gas, saturated with water vapor, will be obtained from a 0.1138g sample of alloy which is 73.2 percent Al? (Pbar=754.3 torr, T=21.2deg C) Show your work. 2) What volume (in mL) will the dry hydrogen gas from questio
How many kilojoules of heat energy would be liberated if 220.6 g of propane were combusted in the presence of 320.0 g of oxygen given the balanced chemical equation below and its corresponding enthalpy data? Assume 98.00 % yield.
A brick is initially 12.67 cm high and an aluminum can is initially 12.68 cm high. By how much must their temperatures be raised in order for the brick and the can to have exactly the same height?
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