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Liquid octane CH3CH26CH3 will react with gaseous oxygen O2 to produce gaseous carbon dioxide CO2 and gaseous water H2O. Suppose 90. g of octane is mixed with 145. g of oxygen. Calculate the maximum mass of water that could be produced by the chemical reaction. Be sure your answer has the correct number of significant digits.
Determine the molarity of a NaOH solution when each of the following amounts of acid neutralizes 25.0 mL of the NaOH solution.
5.00 mL of 0.250 M HNO3
The explosion of nitroglycerin, CHS (NO3)3 , is chemically speaking an instantaneous decomposition of a fairly complex compound into several gases, including nitrogen and water vapor. How many grams of nitrogen will result from the explosion of 2900 grams of nitroglycerine ? this equation is already balanced for you! The molar mass of nitro is 227 grams/1 mol
4C3H5(NO3)----12CO2+6N2+O2+10H2O
Analytical Chemistry
Calculate the molarity of a 30.0% hydrogen peroxide solution. The reported density of 30% hydrogen peroxide is 1.135 g/cm3. (H2O2 = 34.0147 g/mol)
A chemist heats a 215-g sample of iron from 25°C to 90°C. How much heat (q) did the iron absorb? The specific heat capacity of iron is 0.45 J/g°C. Use q = mcΔT
A sample of drinking water has a nitrate concentration 2.3 ppm (a level that is safe to drink). Calculate the mass, in grams, of nitrate ions in a 250 mL glass of this water.
A solution of salt solution is made by mixing 6.75 g of NaCl(s) in enough water to make exactly 750 mL of solution. What is the W/V percentage concentration of the solution?
A lab technician uses a 0.25-mol/L sodium carbonate stock solution, Na2CO3(aq), to prepare 250 mL of 0.010-mol/L solution. How much of the stock solution should be used?
Silver + Lead oxide
If 4.25 g CO2 were produced, what is the percent yield of this reaction?
