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A sample of 0.250 g of a pure radionuclide with a mass number of 244 was pragmatic to have an absolute activity of 4.45 micro curies. Determine the half-life of this radionuclide.
Consider the following system at 100°C: N2O4(g) ?2NO2(g) Kc = 0.36 Predict the direction in which the system will move to reach equilibrium if we start with 0.20 mole of N2O4
An unopened soda can has an aqueous CO2 concentration of 0.0506 m at 20 celcius. What is the pressure of CO2 gas in the can
considering the given reaction 2s3o2rarr2so3 in which elemental s reacts with oxygen to produce so3 then find out how
write and balance the given chemical equation.1.write balanced chemical equations for the following reactions.nbspwhen
Chloral hydrate, a sedative, contains C 14.52%, H 1.83%, Cl 64.30%, and O 19.35%. If it has a molar mass of 165.42 g, what is the molecular formula of chloral hydrate?
compound has been analyzed and found to contain the following masses of elements: Carbon 0.2990g, hydrogen 0.05489g, nitrogen 0.2318g, and oxyen 0.1328g. calculate the tmpirical formula of the compound.
the molar heat capacity of carbon dioxide at constant pressure isnbsp 29.14 j mol 1 knbsp . what is the heat capacity
Pd has a FCC lattice in which hydrogen atoms occupy octahedral holes. If 70% of the holes are filled by hydrogen atoms and the lattice does not expand upon hydrogenation, how many grams of hydrogen will be contained in one cubic centimeter of the ..
A chemist is commissioned to produce 50,000 liters of .550M aqueous phosphoric acid. The chemist can purchase solid, 98.64% pure, phosphoric acid to dissolve in water. How many grams of this reagent are required
What proportion of 3-phosphoglycerate will carry 14C after five enzymatic turnovers (five equivalents of CO2 are fixed) if purified active
A bottle of wine contains 13.5% ethanol by volume. The density of ethanol (C2H5OH) is 0.789 g/cm3. Calculate the concentration of ethanol in wine in terms of mass percent and molality.
Bond length is the distance between the centers of two bonded atoms. On the potential energy curve, the bond length is the internuclear distance between the two atoms when the potential energy of the system reaches its lowest value.
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