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Dimethyl hydrazine ignites spontaneously upon contact with dinitrogen tetroxide. If 2 mol of dimethyl hydrazine are mixed with 4 mol of dinitrogen tetroxide, and the reaction an 85% yield, how many moles of N2, H2O and CO2 will be produced?
The water level in a graduated cylinder initially at 216 rises to 287 after a piece of lead is submerged. What is the mass in grams of the lead?
A student mixed 5.00 mL of a nickel(2) chloride solution with 5.00 mL of .100M sodium phosphate and a precipitate formed. How many moles of sodium phospahte were present in 5.00 mL of the solution?
How many grams of dry NH4Cl need to be added to 2.00 L of a 0.600 M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 8.89?
If carbon dioxide gas is collected over water at 25°C and 775 torr, what is the partial pressure of the CO2? The vapor pressure of water is 23.8 torr at 25°C.
Calculate the concentration of each ion present in a solution that result from mixing 50 mL of a .20 M NaCLO3 solution with 25 ml of a .20 M Na2SO4. ASsume that the volumes are additive.
role of sodium carbonate in extraction of caffeine from tea leaves.
How many grams of P2O5 gas are present in a 750 ml container that is at 75 degrees C and at a pressure of 590 mm Hg?
Find the number of unpaired electrons, magnetic moment and ligand field stabilization energy (LFSE).
Find the velocity of an electron emitted by a metal whose threshold frequency is 2.15×1014 {rm s^{-1}} when it is exposed to visible light of wavelength 4.76×10-7 {rm m}.
The EPA limit for lead in the water supply is 15 parts per billion by mass. Calculate the number of lead ions present in 1.00 kg of water that is at the EPA limit for lead.
Rank from longest to shortest distance. To rank the items as equivalent, overlap them.
explain the hazards associated with 1.0M CH3COOH solution, 0.10M BaCl2 solution and 0.10M Na2C2O4 solution.
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