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An aqueous solution is 5.80% methanol (CH3OH) by mass with d= 0.988 g/ml. What is the molarity of CH3OH in this solution
Methyl orange is an indicator that changes color over a range from pH = 3.1 to pH = 4.4 . What is Ka of methyl orange
Determine the room temperature heat capacities at constant pressure for the following materials: aluminum, silver, tungston and 70Cu-30Zn brass
The normal freezing point of water H2O is 0.00 oC and its Kf value is 1.86 oC/m. Assuming complete dissociation of the electrolyte,
Define dipole moment. Distinguish between polar and nonpolar bonds.Give an example of each
In 1.00 atm of pure oxygen, the solubility of O2(g) in water is 1.26 x 10^-3 M at 25.0 degree C. The mole fraction of oxygen in air is 0.210. If the atmospheric pressure is 0.979 atm, what is the solubility of oxygen in air at 25.0 degree C?
What observed rotation is expected when a (7.91x10^-1) M solution of (R)-2-butanol (mw = 74.12 g/mol) is mixed with an equal volume of a 0.740 M solution of racemic 2-butanol, and the resulting solution is analyzed in a sample container that is 1 ..
A 32.0-g sample of water at 260. K is mixed with 47.0 g water at 300. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
The compound MgSO4 is called Epsom salts. How many grams will you need to prepare a bath containing 5.80 moles of Epsom salts? Express your answer using three significant figures.
Suppose a buffer solution is made from formic and (HCHO2) and sodium formate (NaCHO2). What is the net ionic equation for the reaction that occurs when a small amount of hydrochloric acid is added to the buffer?
consider a flask at 298 K with an air pressure of 738 mmHg to which some n-butanol is added. If the measured pressure after the addition is 745 mmHg, what is the vapor pressure of n-butanol at 298 K?
A buffer solution contains 0.1 mole ch3cooh and 0.1 M sodium acetate (that is it has .2 m total buffering components of acetic acid + acetate) calculate the pH after addition of 4 ml of 0.025
Thermal equilibrium, 10.0g of Fe(s) at 98.0 degrees Celsius is placed in 50.0mL of H2O(l) at 20 degrees Celsius
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