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Use principles recognized to arrange the following atoms in order of decreasing value of the first ionization energy: Sr Cs S F As
The unit celll of copper (Cu) is a face-centered cube that has an edge lenth of 3.62 A (note: 1A=1*10^-10 m). Determine the volume occupied by one mole of copper atoms, interms of mL/mol.
Using the de Broglie wave equation, calculate the speed, in m/s, at which an electron must travel to have a wavelength of 25.0 pm?
how many grams of ammonium sulfate can be dissolved in 0.0200 cacl2 without the formation of a solid?
Calculate the percent nickel in a compound for which a 11.6 mg sample required 1.38 mL of 0.010 M EDTA to reach the Murexide endpoint.
report the total heat needed and the heat needed for each individual step in the process.
mineral pyrolusite mno2 manganese oxide is a compound of manganese-55 and oxygen-16. determine the empirical formula of
A sample of nitrogen gas is collected over water at a temperature of 23.0 degrees Celcius. What is the pressure of the nitrogen gas if atmospheric pressure is 785 mm Hg?
a 62g piece of ice at 0 degree celsius is added to a sample of water at 9 degree celsius. all of the ice melts and the
What are the concentrations of all the solute species in a 1.0 M solution of hydrogen peroxide, H2O2. For H2O2 , Ka= 1.8 x 10-12:[H+], [HO2-], [H2O2], and pH of solution.
a liquid is heated in a vertical tube of constant diameter 15 m long. the flow is upward. at the entracnce the
liquid heptane c7h16 burns in oxygen gas to yield carbon dioxide and water. what mass of carbon dioxide is produced
What is the concentration, in ppm (m/m) , of a sodium chloride solution prepared by adding 37.5 micrograms of sodium chloride to 21.0Kg of water
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