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Sodium has a density of 0.968g/cm3 and crystallizes with the body-centered cubic unit cell. Calculate the radius of a sodium atom. and what is the edge length of the cell in picometers?
What salt is produced in each of the following neutralization reactions?
The production of iron and carbon dioxide from Iron (3) oxide and carbon monoxide is an exothermic reaction? how many kj of heat are produced when 3.40 mol Fe2O3 reacts with excess of CO.
how would you synthesize 2-ethyl-1,3-hexanediol in the lab setting? starting from simple organic compounds such as benzene
LiI has a lattice E of -7.3x10^2 kJ/mol and a heat of hydration of -793kJ/mol. Heat of solution is -60kJ/mol. Determine how much heat is evolved
a 1.628 gram sample of a hydrate of magnesium iodide is heated until all of the water is removed. its mass is now 1.072 grams. what is the formula of the hydrate?
Find out the concentration of this solution 1) in m (molality), 2) XHX (mole fraction of HX), 3)% w/w (percent by mass) if solvent in this solution is H 2 O. ?
A sample of gas with a mass of 1.58 occupies a volume of 941 at a pressure of 753 and a temperature of 16. What is the molar mass of the gas.
How many liters of N2 gas result at 25.0oC and 1.10 atm pressure when 125 grams of NaN3 react
The standard molar heat of fusion of ice is 6020 J/mol. Calculate q, w, and E for melting 1.00 mol of ice at 0C and 1.00 atm pressure.
A bottle of 6 M acid has 34.3 mL remaining in it. If the acid is diluted to 770 mL, what is the new concentration of the acid.
A hot tub is filled with 470 gallons of water, which has a density of 1.0. How many kilocalories are needed to heat the water from 67 to 109?
Calculate the enthalpy change associated with the conversion of 25.0 grams of ice at -4.00°C to water vapor at 110.0°C. The specific heats of ice, water, and steam are 2.09 J/g-K, 4.18 J/g-K, and 1.84 J/g-K, respectively. For H2O, Hfus = 6.01 kJ/m..
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