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Calculate the molar mass of a nonelectrolyte that lowers the freezing point of 25.00 g of water to 3.9°C when 4.27 g of the substance is dissolved in the water.
When 100.g Mg3N2 reacts with 75.0 g H2O, 15.0 g of NH3 is formed. What is the % yield?
If you drop 25 g warm nails initial temp 65.4 into coffee cup calorimeter that contains 100.0 g water at 20 degrees Celsius, what will the temperature be.
Isotopes Decay, Isotopes decay according to first order kinetics with a predictable half life
What are the main mononitro products of the nitration of the following compounds - Write structural formulas for the compounds
what is the molarity of a solution prepared by dissolving 2.06g of NaOH in a volume of 500.0ml?
Aromatic Compounds :sample question, Both naphthalene and azulene have 10 pie electrons and are aromatic. Pentalene is apparently antiaromatic and is unstable even at -100 degrees C.
Calculate the mass of oxygen dissolved in a 5.00 L bucket of water exposed to a pressure of 1.13 atm of air. Assume the mole fraction of oxygen in air
Differences in boiling points, Rationalize the difference in boiling point between the members of the following pairs of substances:
Gas ammonia can be decomposed to give 3.00 by mass of hydrogen and 14.0 by mass of nitrogen.what mass of nitrogen is obtained.
PCl5 + 4H2O > 5HCl +H3PO4. How many total moles of acid are formed when starting with 4.5 g of PCl5 and excess H2O.
Calculate w (in kJ) when 265 g iron (III) oxide (MM = 159.7 g/mol) reacts with excess carbon to produce carbon dioxide gas at 358 K
A sample of nitrogen occupies a volume of 546 mL at STP.What volume would nitrogen occupy at 177C under a pressure of 380 torr?
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