How many aluminum atoms would have to be laid side by side
The radius of a aluminum atom is 143 pm. How many aluminum atoms would have to be laid side by side to span a distance of 4.82 mm?
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What is the lewis structure for xenon tetrabromide?
A 64g piece of ice at 0 degrees celsius is added to a sample of water at 7 degrees celsius. All of the ice melts and the temperature of the water decreases to 0 degrees celsius How many grams of water were in the sample.
A reaction has Horxn = -120. KJ/mol and a forward activation energy, Ea = 80. kJ/mol. What is the activation energy for the reverse reaction? Describe the reaction as endothermic or exothermic, and reversible or irreversible.
Jose is thinking about purchasing a soft drink machine and placing it in a business office. He knows that there is a 11 percent probability that someone who walks by the machine will make a purchase from the machine, and he knows that the profit o
An auto mechanic spills 90. mL of 2.6 M H2SO4 solution from a rebuilt auto battery. How many milliliters of 2.5 M NaHCO3 must be poured on the spill to react completely with the sulfuric acid.
A 75.0 L steel tank at 20.0C contains acetylene gas (C2H2) at a pressure of 1.39 atm. Assuming ideal gas behavior, how many grams of acetylene are in the tank?
Calculate the molarity of an NH3 solution made up of 37.5 g of NH3 in 70.0 g of water. The density of the solution is 0.982 g/mL
When sodium is heated, a yellow spectral line whose energy is 3.37x10^19 J/photon is produced. What is the frequency and wavelength of this light?
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