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calculate the volume of hydrogen produced at 1.50 atm and 19 degress celsius by the reaction of 26.5 g of zince with excess hydrochloric acid according to the balanced equation
A chemist burns 160 g of aluminum in oxygen to produce aluminum oxide. She produces 260 g of aluminum oxide. Write a balanced equation and calculate the theoretical yield and percent yield.
Why is the production of sodium azide and nitrogen gas in an airbag so rapid compared to the production of sodium bicarbonate and acetic acid?
A stock solution of perchloric acid is 70.5% by mass HClO4 and 29.5% by mass water. The density of the solution is 1.67 g·mL-1 at 20 C. Calculate the molarity of the solution.
Express your answer in terms of the initial temperature of water, T. I got T = T (final - 2.6) but the possible answers given don't make sense
Silver nitrate reacts with ferric chloride to give silver chloride a ferric nitrate. In a particular expriment, it was planned to mix a solution containing 25.0 g of silver nitrate with another solu
How much energy is required to heat an iron nail with a mass of 7g from 25 degrees celcius until it becomes red hot at 750 degrees celcius?
It takes 580. J of energy to raise the temperature of 124.5 g mercury from 20.0°C to 53.5°C. Calculate the specific heat capacity and the molar heat capacity of mercury.
How much heat (in ) is required to warm 10.0 of ice, initially at -11.0, to steam at 111.0? The heat capacity of ice is 2.09 and that of steam is 2.01 .
What graphical method will determine the appropriate overall reaction order for this reaction?
At Equilibrium, the concentrations of NOBr = 0.10M and Br2 = 0.0050M . What is the Equilibrium constant for this reaction?
12 grams of hydrogen is combined with 104 grams of oxygen as an explosive reaction that forms water as its sole product. All the hydrogen reacts but 8 grams of oxygen remain. How many grams of wate
At 4.0 degrees Celsius, pure water has a density of 1.00g/mL. At 60.0 degrees Celsius, the density is 0.98g/mL. Calculate the volume in mL of 1,00g of water at each temperature and then calculate th
What is the activation energy for a reaction which proceeds 50 times as fast at 400 K as it does at 300 K?
Calculate the number of grams of sulfuric acid in 0.500 L of battery acid if the solution has a density of 1.28g/mL and is 38.1% sulfuric acid by mass.
An unknown metal of density 7.65 g/cm^3 occurs in a face centered cubic unit cell. The radius of the atom is 126 pm. What is the metal's atomic mass and what is the metal?
Calculate the amount of N2 gas released (in liters at 37oC and 1 atm) when the diver returns to the surface of the water, where the partial pressure of N2 is 0.80 atm.
Write the equation for the reaction of acetone and methyl magnesium bromide.
The molar enthalpy of vaporization of water at 373 K and 1.00 atm is 40.7 kJ/mol. What fraction of this energy is used to change the internal energy of the water?
The density of diamond is 3.51 g/cm3. The international (but non-SI) unit for weighing diamonds is the "carat" (1 carat = 200 mg exactly.) What is volume of a 0.47 carat diamond?
Ropes 3 m and 5 m in length are fastened to a holiday decoration that is suspended over a town square. Find the tension in 3 m rope.
Mom made the kids 2 L of Kool-Aid by mixing 5.0 g sugar (C12H22O11), 10.2 mg of Kool-Aid powder (a proprietary mixture of ingredients), and water. What is the concentration of sugar in the Kool-Aid
Calculate the solubility of the compound in your choice of solvent as g/100 mL.
A 1.0 ounce piece of chocolate contains 15 of caffeine, and a 6.0 ounce cup of regular coffee contains 105 of caffeine.
How many grams of Cl2 can be prepared from the reaction of 15.0g of MnO2 and 30.0g of HCl according to MnO2 + 4HCl ->> MnCl2 + Cl2 + 2H2O