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The mass of an electron is 9.11times 10^{-31}~rm kg. If the de Broglie wavelength for an electron in a hydrogen atom is 3.31times 10^{-10}~rm m, how fast is the electron moving relative to the speed of light? The speed of light is 3.00times10^8 ~rm m/s.
How many moles of NaCl2 can be formed in the reaction of 5.00 molof Ni and 10.0 mol of HCl
calculate the mass of Cl2 consumed if the battery delivers a constant current of 853 A for 28.0 min.
The molar volume of the liquid at this temperature and pressure is 163.3 cm^3/mol. At 100 atm the melting temp changes to 351.26 K. Calculate the enthalpy and entropy of fusion of the solid.
the partial pressure of oxygen in air at sea level is 0.21 atm. using the data in table 13.2, together with henry's law, calculate the molar concentration of oxygen, in the surface water of a mountain lake saturated with air at 20 degrees celcius ..
Explain the effect of pH on the aqueous solubility of dissolved organic matter (use the 13C NMR spectra on the International Humic Substances Society as your primary reference). Speculate on how DOM fractionation would change crossing a riverine (..
Determine the minimum concentration of KOH Potassium hydroxide is used to precipitate each of the cations from their respective solution.
Show the amounts in NIKE's accounting equation by calculating thevalue of NIKE's total assets, total liabilities and total shareholder's equity
Catalyzes the synthesis of ATP when protons flow down their electrochemical gradient 4. Utilizes ATP hydrolysis to pump protons down their electrochemical gradient I picked 1/3/4, because 2 uses protons and not electrons.
Three colorless solution in test tubesm whit no labels arein a test rack on the laboratory bench. lying beside the test tubesare three labels, potassium iodide, KI, silver nitrate, AgNO3 andsolution sulfide Na2S
What is the molar mass of butane, C4H10? Express your answer to four significant figures and include the appropriate units. Value and units
The total precipitate was dissolved in HCl + HNO3. When the solution thus formed was treated with excess NaOH followed by H2O2, a colorless solution and a reddish brown precipitate were formed. The precipitate was found to be soluble in HCl, H2SO4..
50.50 mL of 0.116 M HF is titrated with 0.1200 M NaOH. What is the pH after 50.50 mL of base have been added? The Ka for HF is 6.8 x 10-4
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