What is the cl- concentration
A stock solution is prepared by adding 25 mL of 2.2 M AlCl3 to enough water to make 75 mL. What is the Cl- concentration of 25 mL of the stock solution?
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A 1.000 g sample of a compound containing C, H and O is burned in excess oxygen, producing 1.783 g CO2 and 0.734 g H2O. Determine the empirical formula of the compound. A. B. C. D. E. C4H12O4 C3H6O2 C2H6O2 C3H8O3 C3H7O
The total molarity of acid and conjugate base in this buffer is 0.100 . A student adds 9.00 of a 0.250 solution to the beaker. How much will the pH change? The of acetic acid is 4.760.
Air at 101.3 kPa and 15°C enters and leaves an axial-flow compressor stage with a velocity of 150m/s without swirl. The stage has a tip radius of 56cm and a hub radius of 35cm and rotates at 8000 rpm.
Calculate the temp in degree celcius after thermoequillibrium is reached, assume no heat lost to the surroundings. The enthalpy of fusion of ice is molar heat = 6.007 kJ/mol, and the molar heat capacities of ice and water are 38 and 75 J/mol K res
A 265- flask contains pure helium at a pressure of 755 . A second flask with a volume of 465 contains pure argon at a pressure of 712 .If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial pressure of h
A solid sample containing some Fe+2 ion weighs 1.062g. It requires 24.12mL 0.01562 M KMnO4 to titrate the Fe+2 in the dissolved sample to a pink end point. How many grams of iron are there in the sample?
0.158g of a barium halide is completely precipitated out of H2SO4 and 0.124g of barium sulfate are produced. What is the true formula of the compound?
A small oxygen cylinder is being filled from a much larger tank. The initial temperature and pressure of the small cylinder are 300 k and 10 bar, respectively.
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With in-text citations and references, explain the key components necessary for the success of public health infrastructure.
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