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How much energy is required to vaprorize 150 ml of c6h6 at 25 c? the density of c6h6 is 0.87 g/ml and the enthalpy of vaporization is 30.8 kj/mol
Carboxylic acids have higher than expected boiling points due to dimeric associations involving hydrogen bonding. The structure of 3-methylbutyric acid is shown below. Draw a second molecule of 3-methylbutyric acid
Calculate the minimum volume of water that is needed to decompose all the excess ethanoic anhydride. Recall: 1.0 g of H2O = 1.0 mL of water, for this purpose
How many grams of CO2 were used during the month? molar mass of CO2 is 44.00995 g/mol.
How much energy (in kilojoules) is required to convert 270 mL of diethyl ether at its boiling point from liquid to vapor if its density is 0.7138 g/mL?
What is the mole fraction of solute and the molal concentration for an aqueous solution that is 19.0% NaOH by mass?
Calculate the pH of a solution formed by mixing 250.0 mL of 0.15 M NH4Cl with 200.0 mL of 0.12 M NH3. The Kb for NH3 is 1.8 x 10-5.
Use Le Chatelier's principle to explain the different colors found in the equilibra in Methyl orange
capacity change if you add 0.2 M of benzoic acid to the buffer made of 0.3 M of acetic acid and 0.5 M of sodium acetate
What is the change in pH when 0.005 moles of HCl is added to 0.100 L of a buffer solution that is 0.100 M in CH3CO2H and 0.100 M NaCH3CO2? The Ka for acetic acid is 1.8 x 10-5.
Explain why it takes longer time when anyone cook an egg in boiling water while camping at in elevation of 0.5km in the mountain than it does it home.
Determine the osmotic pressure of a solution that contains 0.042 g of a hydrocarbon solute (molar mass = 340 g/mol) dissolved in benzene to make a 350-mL solution. The temperature is 20.0°C.
A 25.0g sample of nitrogen (N2) has a volume of 50.0L and a pressure of 630.0 mmHg. What is the temperature of the gas.
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