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In our world today, aluminum is used for many items, including beach chairs and soda cans. This material was not chosen randomly but was carefully selected based on many variables. Think about where aluminum comes from, how we obtain/purify it and its chemical and physical properties (metal vs. plastic, weight, corrosive vs. non-corrosive). What are some factors that were probably considered before deciding to use aluminum to make beach chairs or soda cans?
An excess of water is reacted with 2.5g of cesium metal. Calculate the volume of dry hydrogen that is collected over water at 25 degrees C and a barometric pressure of 708 Torr. The vapor pressure of h2o at 25 degrees C is 23.8 Torr.
Consider the titration of 100.0 mL of 0.100 M H2NNH2 (Kb = 3.0 10-6) by 0.200 M HNO3. Calculate the pH of the resulting solution after 100.0 mL of HNO3 have been added.
Hydrogen iodide decomposes according to the equation: 2HI(g) H2(g) + I2(g) Kc = 0.0156 at 400°C. A 0.57 mol sample of HI was injected into a 2.0 L reaction vessel held at 400°C. Calculate the concentration of HI at equilibrium.
nitrogen and hydrogen form the compound NH3 how many hooks would dalton put on the nitrogen atom to explain this compound?
A 0.035L balloon is inflated to a pressure of 52.0kPa. What is the volume of the balloon if the pressure is decreased to 30.8kPa?
Write an equation for the formation of any precipitate.When i added the HCl, the solution became cloudy - write an equation for any changes observed.
At 46c a sample of ammonia gas exerts an pressure of 5.3 atm. What is the pressure when the volume of the gas is reduced to one fourth of the original value at the same experiment
Polonium metal crystallizes in a lattice which contains only one Po atom per cubic unit cell. The radius of polonium atom is 1.67 A. Calculate the density of the polonium metal
water vapor and nitrogen dioxide gas no2 are combined to manufacture ammonia. a byproduct of this reaction is oxygen
We place 1.32 mol PCl5 in a 1.0L flask and allow it to reach equilibrium at a given temperature. What is the final concentration of Cl2 in the flask? PCl5 = PCl3 + Cl2 K= .47
Calculate the standard cell potential of a CulCu2+(1.0 M) half cell connected to a standard hydrogen electrode (SHE). What is the pH if Ecell = 0.48 V.
determine if a redox reaction would occur if you were to mix them in a single solution. For those pairs of substances that would not react, calculate the EOCELL of the unfavored reaction between the two substances.
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