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A solution contains 100.0 g of water,10.0 g NaCl,and 15.0 g methanol. what is the weight(mass) percent of methanol in the solution?
A 1.000-mL aliquot of a solution containing Cu2 and Ni2 is treated with 25.00 mL of a 0.04068 M EDTA solution. The solution is then back titrated with 0.02053 M Zn2 solution at a pH of 5
How many grams of sodium lactate should be added to 1.00 L of 0.150 M lactic acid to form a buffer solution with pH= 4.00? Assume that no volume change occurs when the sodium lactate is added.
Ethanol melts at -114 C and boils at 78 C. The enthalpy of fusion of ethanol is 5.02 kJ/mol, and its enthalpy of vaporization is 38.56 kJ/mol. The specific heats of solid and liquid ethanol are 0.97 J/g.K and 2.3 J/g.K, respectively.
a laboratory analysis showed the following resultsnbspnbspnbspnbspnbspnbspnbspnbspnbspnbspnbsp cec 20
A local radio station can be tuned in by dialing your radio to a frequency of 101.5 MHz. Calculate the energy of the wave.
A 3.00 L helium balloon, initially at STP, floats up to an altitude of 10 km, where the pressure is 200.0 torr and the temperature is -45°C. What is the balloon's new volume?
How many stereogenic centers are there in 1,1,2,3-tetramethylcyclohexane? a) 1 b) 2 c) 3 d) 4
Complete the following potential energy diagrams for the formation of B and C by sketching the energy curve for each product. The diagrams are
What amount of energy is required to completely ionize 29.9 grams of carbon atoms in the gas phase (C(g)) if the ionization energy of C(g) is 1086 kJ/mole.
Calculate the amount of C6H12O6 (glucose) you would need to measure out on a balance in order to have 1.504 x 10^23 molecules of C6H12O6 (glucose)
Calculate the activity for CS2 at mole fraction CS2=.722 for a Raoult's Law standard state using the following data: PCS2=446.9 Torr, and P*CS2=512.3 Torr
Methanol undergoes combustion in oxygen to make Carbon Dioxide Gas & Liquid Water. Find Standard Enthalpy of Reaction?
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