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A 6.20 g sample of phosphorus was reacted with oxygen to form an oxide with a mass of 14.20 g. Calculate the percent composition of the compound.
What is the mole fraction of Kr if the partial pressure of Xe and Ar are 1.60 atm and 2.8 atm, respectively?
What is the pOH of a Ba(OH)2 solution made by dissolving 0.081 grams of Ba(OH)2 in enough water to make 286 mL of solution
Please consider the reaction of 0.22M 2-iodopropane with tetramethylammonium fluoride (TMAF) in DMSO to give propylene. The reaction rate in the presence of 0.1M TMAF is 0.002 M/s, but it is 0.0058 M/s in the presence of 1.2M TMAF.
A steel tank has a volume of 438 L and is filled with 0.885 kg of O2 at 21°C. What is the pressure within the tank?
A gas sample has a volume of 4250 ml at 15 degree celsius and 749mmHg. What is the new temperature (degree celsius) after the sample is transferred to a new container with a volume of 2.50 L and a pressure of 1.20 atm
Draw the structure of the product that is formed when but-1-yne is treated with the following reagents:1) disiamylborane; 2) H2O2, KOH; 3) LiAlH4. Disiamylborane = [(i-Pr)(CH3)CH]2BH, a hindered derivative of BH3.
Hospital X-ray generators emit X-rays with wavelength of about 15.0 nanometers (\rm nm), where 1\;{\rm nm}= 10^{-9}\;{\rm m}. What is the energy of the X-rays
in a certain experiement 4.6 g al is reacted with excess oxygen and 6.8 g of product is obtained according to this
1.a sample of hydrogen gas h2 is in a 2.98 l container at 708 torr and 19 oc. express the pressure of hydrogen in atm
A cylindrical glass tube 13.3 cm in length is filled with mercury ( density= 13.6 g/mL ). the mass of mercury needed to fill the tube is 107.5 g. calculate the inner diameter of the tube.
A 140.0-\,mL solution contains 2.00g of sodium benzoate and 2.53g of benzoic acid. Calculate the \rm pH of the solution.
Write a balanced chemical equation showing the formation of the salt, Na3PO4, from the reaction of the appropriate strong acid and strong base, and name each compound in the equation.
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