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Specified the balanced equation, Na2SO4(aq) + BaCl2(aq) 2 NaCl(aq) + BaSO4(s), Explain how many moles of Na2SO4 are required to produce 0.45 g of BaSO4?
The net charge of a polypeptide at a particular pH can be determined by considering the pK value for each ionizable group in the protein
Calculate the empirical formula for each of the following natural flavors based on their elemental mass percent composition. Express your answer as a chemical formula.
An inexpensive hygrometer often used by cello players in Minnesota is based upon the color changes of cobalt(II)chloride as the relative humidity of the atmosphere changes.
A solution is made by mixing 40.0 mL of ethanol, C2H6O, and 60.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 °C
although even more strained than cyclopro-panone, is nevertheless quite stable and can even be distilled. Explain, taking the polarity of the carbonyl group into account.
Calculate kinetic energy of a 2 ton truck lumbering along at 60 mi/hr.
Draw the skeletal structure for trans-1-bromo-2-isopropylcyclopentane. Make sure the tapered end, i.e. the thin end, of the wedge bond is attached to the parent.
Explain why viruses, in physiologic conditions, are capable of packing extremely large amounts of DNA (negatively charged) into their tiny capsids.
capacity change if you add 0.2 M of benzoic acid to the buffer made of 0.3 M of acetic acid and 0.5 M of sodium acetate
Briefly discuss the theories and important experiments that led to the determination that light is both a wave and a particle. i will rate the responses later
(a) What is the pH of this buffer (b) What is the pH of the buffer after the addition of 0.48 mol of NaOH. (assume no volume change) (c) What is the pH of the original buffer after the addition of 0.23 mol of HI. (assume no volume change)
A 250.0ml sample of air at 100.0 K is warmed to 200.0 K at constant pressure.What is the volume of the air sample at the new temperature.
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