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Select the smaller ion in each of the following pairs. using the format [Ca]2+ for Ca2+.)
(a) Cu+ or Cu2+
(b) K+ or Li+
(c) F - or Cl -
A heliox deep-sea diving mixture contains 6.0% oxygen and 94.0% helium.What is the partial pressure of oxygen when this mixture is delivered at a total pressure of 9.0
Assume that the wet limestone process requires 1 metric ton of CaCO3 to remove 90% of the sulfer from 4 metric tons of coel containing 2% S. Assume that the sulfur product is CaSO4. Calculate the percentage of the limestone converted to calcium su..
If 2 new elements have been discovered and one is R, a new element from the family with 3 valence electrons and Z, a new element from the family with 6 valence electrons. Write the formula for the binary compound between element R and element Z.
explain how to identify a molecular compound based on a: chemical formula and on a systematic name
Calculate the density and radius of the ball bearing (volume of a sphere of radius r is 4/3pi r^3).
All of the following are factors that affect reaction rate EXCEPT a. density of reactants b. presence of a catalyst
What is the initial concentration (in M) when 17.8 mL of a iron(lll) chloride solution was diluted with 15.3 mL of solvent to a final concentration of 0.725 M? Assume the volumes are additive.
Calculate concentrations of H30+ and the pH of each acidic solution. Since HCl is a monoprotic acid, the H30+ concentrations are equivalent to HCl. First do equation: (M con)(V con)=(M dil)(V dil)
The rate of disappearance of HBr in the gas phase reaction is 0.103 Ms-1 at 150 deg Celsius. what is the rate of reaction.
A 35.8-g sample of cadmium metal was melted by an electric heater providing 4.66 J/s of heat. If it took 6.92 min from the time the metal began to melt until it was completely melted, what is the heat of fusion per mole of cadmium?
Calculate the energy of an ultraviolet photon of wavelength 106nm and that of an infrared photon with a wavelength
By what factor (how many times) will the rate constant increase when the temperature is raised from 10°C to 28°C?
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