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Nitrogen dioxide reacts with water to form nitric acid as well as nitrogen monoxide according to the equation-3NO2(g)+H2O(l)?2HNO3(l)+NO(g)Presume that 3.9mol NO2 and 1.2mol H2O combine and react completely. Explain which reactant is in excess?
Assume your eyes receive a signal consisting of blue light, the wavelength= 470nm. The energy of the signal is 2.50x10^-14 J. How many photons reach your eyes
Take the x-axis as lying perpendicular to the plane of the molecule. Does the N2px orbital participate in the hybridization for either species? Briefly explain your answer.
Starting with 2.70 x 10^22 atoms of Tl-206, calculate the number of such atoms left after 28.5 min.
Calculate the molar enthalpy change ?H~rxn for the dissolution of KNO3 in water. Calculate in the error in ?H~
Calculate the amount of heat liberated (in kJ) from 347 g of mercury when it cools from 85.0°C to 15.0°C.
The mole fraction of gas A in a mixture is 0.48. If the total pressure of the container is 2.0 atm, what is the partial pressure of gas A?
calculate the number of NaCl formula units formed when 190 Na atoms and 98 Cl2 molecules react? 2Na + Cl2 → 2NaCl
For the galvanic cell employing the cu, cu2+ and Cd, Cd2+ couples, calculate the maximum amount of work that would accompany the reaction of 1 mol of lead under standard conditions.
calculate the percentage of empty space in 1 mol of water at25 celcius. obtain the density. the volume of amolecule of
How long until the radioactive isotope
You will then make a Kool-Aid solution by dissolving the powder in an entire packet of lemon-lime Kool-Aid in 250.00 mL solution. You find the powder in a packet of lemon-lime Kool-Aid has a mass of 3.629 g.
The half-life of a certain radioactive element is 1,250 years. What percent of the atoms remain after 7,500 years?
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