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Why don't you see the effect of rotation on the vibrational frequencies of chromophores in a polyatomic molecule in the liquid phase
How much heat is released when 105 g of steam at 100 Co is cooled to ice at -15Co? the enthalpy of vaporization of water is 40.67 KJ/mol, the enthalpy of fusion for water is 6.01KJ/mol,
Given stock solutions of 0.02 M tris pH 7.4 and 4 M NaCl, how would you prepare 10.0 ml of a 0.5 M NaCl, 0.01 M tris pH 7.4 (how many ml of tris, how many ml of NaCl, how many ml of water)
Determine how many grams of Ammonia are needed to produce 130 grams of hydrogen flouride?
Anhydrous CaCl2 has a molecular weight of 110.1 g/mol. A hydrate of CaCl2 has a molecular weight of 219.1 g/mol. What is the formula of the hydrate
What is the total pressure of a gaseous mixyure that contains 3 gases with a partial pressure of 1.2atm oxygen, 0.35 atm carbon dioxide
To determine the enthalpy change for this reaction, 0.158 g of Mg metal is combined with enough HCl to make 100.0 mL of solution in a coffee-cup calorimeter of negligible heat capacity.
Calculate the heat evolved when 75.0 mL of a 2.00M HCl solution reacts with 37.5 mL of a 4.00M NaOH solution if the temperature rises from 20.0 degree C to 37.9 degree
How might there still have been a chemical reaction even though they could not see anything happen?
a 93-l sample of dry air cools from 145 degrees celicus to -22 degrees celicus while the pressure is maintained at 2.85
the resulting acid dichloride is reacted with 20mL butyl amine (density=0.74 g/mL). After work up and recrystallization, 12.5 g of N,N'-dibutyl adipamide is obtained. What is the limiting reagent and percent yield
What is the length (in cm) of an edge of a cube of lead (density = 11.3 g/mL) which has a mass of 20.87 lb
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.
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