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A neutral atom as the electron arrangement, 2, 8, 8, 1. How many additional electrons can be placed in the first, second, third and fourth shells of this atom, respectively?
Problem- Calculate the PH of the buffer that results from mixing 60.0ml of 0.250M HCHO2 and 15ml of 0.500M NACHO2
aqueous HF and treated with nitron solution to precipitate a mixture of nitron tetrfluoroborate and nitron nitrate weighing 1.322 g. Find the weight percent of Mg in the original mixture.
Problem- In an experiment that takes 9 minutes and 10 seconds to complete at a current of 0.8 amperes, a volume of 32.3 mL of hydrogen gas is produced. Calculate z for the electrolysis of water. ROUND to the nearest whole number.
Nitric acid is a component of acid rain that forms when gaseous nitrogen dioxide pollutant reacts with gaseous oxygen and liquid water to form aqueous nitric acid.
Compound A had IR peaks at 3060, 3000-2850, 2750, 1715 cm^-1. It reacted with BH4- then H+ to form Compound B which had 1H NMR peaks of 7.2 to 7.4 (garbage, 5), 3.65(doublet, 2), 2.9 (sextet,1), 1.7 (singlet, 1) and 1.22 (doublet, 3). What are com..
A compound that is composed of only phosphorous and sulfur has a molecular weight of 222.27 g/mol. If the compound is 72.13% sulfur by mass, what is the name of the compound.
consider the analysis of manganese in flour by atomic absorption. a 0.1015g sample of flour digested with h2so4 and
The equlibrium constant (Kc) for the following reaction is 6.7 *10^-10 at 630 C N2(s)+O2(g)>2NO (g). What is the equlibrium constant for (Kc) the reaction 1/2 N2(g)+1/2O2(g)>NO(g)
Using A flow diagram, show the separation of a mixture containing p-bromoacetanilide, N-cyclopentyl-N-methyl-N-propylamine (N means the group is attached to the nitrogen of the amine) and m-nitrophenol.
Boyle's apprentice observes that the air trapped in air tube occupies 24.8 cm3 at 1.12 atm.by adding mercury to the tube increases the pressure on the trapped air to 2.64atm. assuming constant temperature, determine the new volume of air?
Problem- Under standard conditions, the Gibbs free energy of the reactants G, std(reactants) in a redox reaction in aqueous solution is 360.02 kJ and the Gibbs free energy of the products G, std(products) is 124.52 kJ. The number of moles, n, of e..
The element Na has bcc packing with a body-centered cubic unit cell. The density of sodium is 966 kg/m3. Calculate the volume (m3) of the unit cell of sodium.
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