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Analyze the IR spectra below and identify the compound associated with each spectra by pointing out the main peaks in each spectra
We irridate an unknown atomic system, in the gas phase, with monochromatic UV radiation of wavelength 0.605x10^-7m and observe a sharp absorption line. All other absorption lines have higher wavelength.
What weight of A would be removed from a solution of 10g of A in 100mL of water by a single extraction with 100 mL of hexanes? What weight of A would be removed by four successive extraction with 25-mL portions of hexanes?
Compute the number of moles - As we know many volatile substances are present in Earth's atmosphere in trace amounts.
What is the pH of a 0.5901 M solution of NaA. Note: HA is a weak acid with Ka = 6.144x10-8.
Concentration of NADH was found by using beer's law using 6.22 mM cm-1 as extinction coefficient. Concentration of NADH = .0212 mM. Moles of NADH that are present in 1.02 mL sample was found by : .0212 mM x 1.02 mL = .021624 mM/mL
Ammonia and preheated air are mixed to form a gas containing 15.0 mol% NH3 at 500°C. If ammonia enters the mixing unit at 30°C at a rate of 600 kg/h and heat is lost from the mixer to its surroundings at a rate of 12.00 kW, determine the temperatu..
when 0.981 g of tartaric acid is dissolved in 11.23g of water the solution freezes at -1.26 c. find the empirical and
What is the wavelength (in meters) of photons with the following energies. In what region of the electromagnetic spectrum does each appear.
If 13.1 grams of hydrate were completely heated, all the water of hydration can be driven off. If the anhydrous sample weighs 11.8 grams. what was the percent of water in the hydrate.
waste streams from various processes in a complex chemical facility are combined and burned for heat because the cost
What is the molarity of the HCl solution if 310mL of the HCl solution reacts with magnesium to produce 5.40L of H2 gas measured at STP
How much heat in kilojoules is evolved in converting 2.00 mol of steam at 150 to ice at -35.0? The heat capacity of steam is 1.84 and that of ice is 2.09 .
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