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Tartaric acid, H_2C_4H_4O_6, has two acidic hydrogens. The acid is often present in wines and precipitates from solution as the wine ages. A solution containing an unknown concentration of the acid
What is the molar mass of lysine if 750.0 mL of a solution containing 8.60 g of lysine has an osmotic pressure of 1.918 atm at 25°C?
What is the bond enthalpy for 1-fluorobutane? So how fast would its hydrolisis be?
In the decomposition of hydrogen peroxide, the percentage yield of oxygen is 93%. What is the actual yield in grams of oxygen if you start with 100 grams of H2O2? The reaction proceeds according to
.850 L of 0.410 M H2SO4 is mixed with .800L of .240 M KOH. what concentration of sulfuric acid remains after neutralization .
A pitchere containing 0.75L of water at 4C. is removed from the refrigerator. How may kilojoules are needed to warm the water to a room temperature of 27C.
What percentage (by moles) of the original N2O4(g) is dissociated at the new equilibrium position (total pressure = 1.00 atm)?
If ammonia gas reacts with sulfuric acid to produce ammonium sulfate, calculate how many liters of ammonia is needed to react with 150 kg of sulfuric acid at 20 degrees C and 25 atm?
At a given temperature, Kp for the reaction below is 0.24. In a given experiment, 0.10 atm of each product and 0.0020 atm of NOBr are intoduced into a container. In which direction will the reaction
How does the strength of an oxoacid is dependent on the elecronegativity and oxidation number of central atom?
A sample of calcium carbonate absorbs 45.5 J of heat upon which the temperature of the sample increases from 21.1 degrees celcius to 28.5 degrees celcius. If the specific heat of calcium carbonate i
If 0.500 mole of carbon disulfide reacts with oxygen completely accorind to the following reaction what would the total volume of the products be at 25 C and 4.23 atm?
A 12 gram sample of an organic compound was analyzed and the following results were obtained. What is the empirical formula of the compound?
A mixture of gases containing 21.0 g of N2, 106.5 g of Cl2, and 12.0 g of He at 14 oC is in a 50.0 L container. What is the partial pressure of N2?
What is known about the strength of quadruple bonds compared with the strength of the triple bond in acetylenes and N2?
The density of liquid oxygen at its boiling point is 1.14 {kg/L} , and its heat of vaporization is 213 {kJ/kg}. How much energy in joules would be absorbed by 4.0 L of liquid oxygen as it vaporized
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?
What will the pressure inside the container become if the piston is moved to the 1.80 mark while the temperature of the gas is kept constant?
The reaction: 2 C7H5N3O6-> 3 N2 + 5H2O + 7CO + 7c. if 2.9 ml of water was recovered, what volume of gas was produced? assume standard conditions and d= .998 g/ml-1
A mixture of 3.8 g H2 (gas) and 11.6 g He(gas) in a 5. L flask is maintained at 0 degrees C}.What is the partial pressure of each gas (in atm)?
Calculate the pH after .020 mol HCl is added to 1L of each of the 4 below. a mixture containing 0.112 M NONH2 and 0.112 M HONH3Cl
Three gases (8.00g of methane,CH_4, 18.0 g of ethane,C_2H_6, and an unknown amount of propane,(C_3H_8) were added to the same 10.0 L container. At 23.0 degrees C, the total pressure in the container
What volume of methanol is formed if 2.94×1011 of methane at standard atmospheric pressure and 25 is oxidized to methanol? The density of is 0.791 . Assume that the oxidation of methane to met
A 100. mL sample of 0.10 M HCl is mixed with 50. mL of 0.12 M NH3. What is the resulting pH?(kB FOR NH3= 1.8 x 10^-5)
A 774 mL gas sample at STP is compressed to a volume of 267 mL, and the temperature is increased to 32C. What is the new pressure of the gas in Pa?