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Problem- A propellant for rockets is obtained by mixing the liquidshydrazineN2 H4. and dinitrogentetroxideN2O4. These compounds react to give nitrogengas N2 and water vapor, evolving 1049 kJ of heat atconstant pressure when 1 mol of N2O4 reacts. Write the balanced thermochemical equation for this reaction.
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write balanced net ionic equations for the following electrolysis reactions using platinum electrodes
What is the concentration of hydroxide (OH1-) ions in saturated limewater if the [H3O1+] = 3.98 x 10-13? Is limewater acidic (A), basic (B), or neutral (N)
The normal boiling point of acetone is 56.5°C. At an elevation of 5300 ft the atmospheric pressure is 630. torr.a. What would be the boiling point of acetone (AHvap = 32.0 kJ/mol) at this elevation?
You are testing some novel fuel mixtures for potential use in automobiles. Your testing apparatus is a 2.54-cm inner diameter cylinder fitted with a piston, designed to mimic a cylinder found in a car engine.
While did the mammoth live. Presume that living organisms have a carbon-14 decay rate of 15.3 dis/min*g C as well as that carbon-14 has a half-life of 5730 yr.
In a particular redox reaction, NO is oxidized to NO3- and Fe3 is reduced to Fe2 . Complete and balance the equation for this reaction in acidic solution
how many liters of CO2 gas can form at STP when 15.5 mL of a 3.00 M HCl solution reacts with excess CaCO3? c)what is the molarity of a HCl solution if the reaction of 200 mL of the HCl solution with excess CaCO3 produces 12.0 L of CO2 gas at 725 m..
A skyscraper in Pittsburg, built in the early 1970's, is supported by water filled columns. Potassium carbonate was added to the water to precent freezing during cold weather. If the solution is 40.0% K2CO3 by mass, what is the predicted freezing ..
Explain how many grams of the excess reactant are left over according to the reaction under given that you start with 10.0 g of Al and 19.0 grams of O2
What is the concentration of Ethanol (CH3CO2H) in (PPM)m that is 1 microgram ethanol per liter of water
a mixture containing only agcl and agbr weighs 2.00 g. it isquantitatively reduced to silver metal which weighs 1.30
What is the average mass(in grams) of a flourine atom if Flourine has an atomic weight of 18.998 amu
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