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The standard enthalpy change for the reaction below is -905.4 kJ (for the reaction as written). What is the standard enthalpy of formation of NO(g)? 4 NH3(g) + 5 O2(g) --> 4 NO(g) + 6 H2O(g)
Water supply in a city is fluoridated by adding NaF. The preferred concentration of F- is 1.6ppm.calculate the amount of Naf in milligrams should be added per gallon (treated water) if the water supply is 0.2 ppm in F-?
Prepare 1.00L of a pH~12 buffer with a total phosphate concentration of 0.050 M.You have at your disposal the following compounds
Nitrogen trichloride, an unstable liquid, is placed in a 3.00 L container at 29ºC. The initial pressure in the flask is 1.00 atm due to the presence of air.
Referring to Table 17.1, calculate the mole fraction of Xe and its concentration in parts per million by volume.
a material can exhibit to be considered hazardous. Discuss five hazardous properties and give one example compound for each hazard.
What are the advantages and disadvantages of natural products as lead compound?
Determine the following characteristics of the unknown acid: molecular formula, molar mass, Lewis structure.
If carbon dioxide gas is collected over water at 25C and 775 torr, what is the partial pressure of the CO2? The vapor pressure of water is 23.8 torr at 25C.
What is the structure of the product of Diels-Alder reaction of (E,E)-2,4-hexadien-1-ol with maleic anhydride?
barium hydroxide solution PH = 10.5 is needed. How many grams of Barium hydroxide are needed
Calculate how many whole drops (.05 mL/drop) of 6 M HCl are required to dissolve this. (I found this to be 11.59 drops
What is the main structural feature of the azo dyes that causes them to be colored compounds?
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