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Choose the most reasonable substance that fits the description in each case:a) Element with higher first ionization energy: Ba or Bi b) Larger ion: Mg2+ or Sr2+ c) Shorter bond length: N2H2 or N2H4
What is the pH of an 85 mL solution containing .215 M NaHCO3 and .203 M Na2CO3?
Using kinetic molecular theiry of gases to explain each of the following: a) A container of nonstick cooking spray explodes when thrown into a fire; b) The air in a hot air balloon rise. c) You can smell the odor of cooking onions from far away.
Calculate the voltage difference between two points of corroding iron differing only in their partial pressure of oxygen: 0.20atm of oxygen at one point and 0.0010atm of oxygen at the other
what order is it? (b)rate constant? (c) calculate the concentration of sucrose at 39 minute, 80minutes, 140minutes, and 210minutes if the initial sucrose concentration was 0.316M and the reaction was zero order in sucrose.
If 4.12g of (NH4)2SO4 (all numbers are subscripts) is dissolved in enough water to form 220mL of solution, what is the molarity of the solution
given this equation 2C4H10+13O2 yield 8CO2+10H2O how many moles of carbon dioxide is porduced from 3.85 moles of butane?
Which molecule is polar? Which of the following is not an ionic compound? Which of the following is not an ionic compound?
Indicate the ionic species that predominates at pH 4, 8, and 11 for (a) ammonia and (b) phosphoric acid.
The vapor pressure of water at 45.0 degrees celcius is 71.93 mmHg. Calculate the vapor pressure of a solution of 1.50m K2CO3 at this temperature
write the balanced chemical equation and corresponding equilibrium expression for the each step in the ionization of phosphoric acid ( apolyprotic acid ) in water?
Calculate OH- of each aqueous solution using the following H3o+ A baking soda 1.0 X 10-8M B orange juice 2.0 X 10-4
Suppose you are given 150 mg of an unknown mixture that contains three compounds, and you are told to separate the compounds using column chromatography, using alumina as a stationary phase. How would you decide what solvent or solvent system to u..
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