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Aluminum oxide is formed from the reaction of metallic aluminum with oxygen gas. How many moles of Aluminum are needed to form 3.4 moles of Aluminum oxide. This is a simple ratio problem. Just use the molar ratio from the balanced equation. This was covered in 5.09. Mass is not involved.
How much heat (in kf ) is evolved in converting 1.00 mol of steam at 150.0 C to ice at -45.0 C? The heat capacity of steam is 2.01 j/g*C and of ice is 2.09 j/g*C .
what is the mass of the zinc sulfide product. Express your answer with the appropriate units.
When 1.00 L of water from the surface of the Dead Sea is evaporated, 179 g of MgCl2 is recovered. What is the molarity of MgCl2 in the original sample
A microwave oven operates at 2.00GHz . What is the wavelength of the radiation produced by this appliance. Express the wavelength numerically in nanometers.
find the reaction conditions eg tempreatures,conditions, Pressuresetc for the process. I also would appreciate any information regarding the disposal of the waste products or recycling of them.
A 2.914-g sample of gypsum, a hydrated salt of calcium sulfate, CaSO4, is heated at a temperature greater than 170 Celsius in a crucible until a constant mass is reached.
What volume (V) of 2.20 M NaOH solution must you add in order to prepare an acetate buffer of pH = 4.26? (The pKa of acetic acid is 4.76.)
Some solid remained in the beaker after stirring with HCl. You washed the filter paper with ketone, which caught on fire and the filter paper was scorched
If you pipetted 50.00 mL of an unknown brine and titrated it with 37.64 mL of 0.1024 M silver nitrate solution. Calculate the ppm salt (NaCl) in the sample.
Calculate the mass of oxygen (in mg) 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 to be 0.21
what is the final volume of the air saturated with water vapor if the total pressure is maintained at 1 bar? what are the mole fractions of N2, O2, and H20 in the moist air? Assume all gases are ideal
rhodium has a density of 12.45 gcm3. this metal crystallizes in a face-centered cubic unit cell. calculate the diameter
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