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What volume of O2 at 988 mmHG and 33 degree celsius is required to synthesize 12.5 mol of NO
Combustion reactions are exothermic. The heat of reaction for the combustion of butane, C4H10, is 687.8 kcal/mol. What is the heat of combustion for butane in kcal/gram?
The temperature of a sample of water increases from 21.9°C to 45.3°C as it absorbs 5669 J of heat. What is the mass of the sample.
Constant pressure molar heat capacity of a compound is found to vary with temp, according to molar cp= 15.25 +.138* T--2.21*10^4/T^2 Calculate the enthalpy change when 1 mole of this compound
A muon is an elementary particle with a negative charge equal to the charge of an electron and a mass approximately 200 times that of the mass of an electron.
The sudden opening of the epiglottis and vocal cords releases this air explosively. Just prior to this release, what is the approximate pressure of the gas inside the lungs?
Compound Z has a solubility limit of 32.5 g/L in diethyl ether. Compund Z has a solubility limit od 2.5 g/L in water. You are given a 100 mL aqueous solution that contains 200 mL of compund Z. If you do three 33.3 mL extractions of Z using diethyl..
what is the pOH of a solution prepared by adding 2.88 g of sodium nitrite, NaNo2, to 135mL of water? ka of HNO2 is 4.5x10^-4.
what is the entropy of a mixture made of 2.4 moles of O2 and 9.2 moles of N2 at the same temperature and pressure?
what is the density of a sample of ammonia gas if the pressure is 705 mmHg and the temperature is 63.0 degrees C
The specific heat capacity of silver is 0.24 J/°C · g. (a) Calculate the energy required to raise the temperature of 160.0 g Ag from 273 K to 295 K.
propane is burned in excess oxygen, 886 kj of heat is evolved. What is the delta Hrxn of this reaction?
a sample of Ringer's solution contains the following concentractions (mEq/L) of cations: Na 147, K 4 and Ca2 4. If CI- is the only anion in the solution
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