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Europium crystallizes in a body-centered cubic lattice (the Eu atoms occupy only the lattice points).The density of Eu is 5.26 g/cm3. Calculate the unit cell edge length in pm.
Compute the mass of salt required to bring the freezing point of 200 mL of H 2 O from 0 degrees C to -5 degrees C.
Determine how many grams of Oxygen(O2) would be used when 10.82 Litres Nitric oxide (NO(g) is formed at the temperature of 19.82 degree Celsius and pressure of 1.092 atm?
Elements cannot be decomposed by chemical means, but can be decomposed by physical means.
Determine how much heat is released when 14.8 kilo grams of Ethylene forms and The Hydrogen gas is collected over H2O(water) at a temperature of twenty five degree celsius and a total pressure =762 mmHg. (The ideal gas law constant R = 0.0821L*atm/..
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 .
Using the given reduction potential determine what is the voltage for these given electrochemical cell
Compute the quantity of work(W) that is associated with a 9.5 Litre expansion of a gas against the given pressure of 755mm Hg
Consider a 53.5 g sample of H2O(g) at 117°C. What phase or phases are present when 134 kJ of energy is removed from this sample.
Using a sample of water with a mass of 46.0 grams at a temperature of -58. Degree Celsius calculates how many Joules of energy (E) are necessary to heat the ice to 0 degree Celsius. Specific heat of ice= 2.1 J/g C).
The analysis of a hydrocarbon revealed that it was 85.6281% C and 14.3719% H by mass. When 2.55 g of the gas was stored in a 2.5 L flask at 127.276 C.
A sediment sample of clay was equilibrated with ammonium ion (NH4+). The ammonium ion was then displaced with Na+. The total amount of ammonium that had been adsorbed.
A quantity of 7.031 g of an organic compound is dissolved in water to make 282.0 mL of solution. The solution has an osmotic pressure of 1.43 atm at 27°C.
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