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Calculate the mass of C2H6O2 that must be added to 1.00 kg of ethanol, C2H5OH,to reduce its vapor pressure by 13.2 torr at 35 degree celsius. The vapor pressure of pure ethanol at 35 degree celsius is 100 torr.
An antacid tablet containing magnesium hydroxide instead of calcium carbonate was dissolved in 10 mL of 0.2893 M HCL. 10 mL of this solutions was tritated to endpoint with 25.20 mL of 0.1007 M NaOH. How much magnesium hydroxide was in the antacid ..
If 100g of iron were reacted with 100g of oxygen according to the reaction below, the maximum yield in grams of Fe2O3 would be. 4 Fe(s) + 3 O2(g) >> 2 Fe2O3(s)
Calculate kc for the reversible reaction and determine what is the activation energy
Metalloids conduct electricity better than nonmetals but not as well as metals
A sample containing both enantiomers is found to have an observed rotation of +0.87 degrees in a one dm tube at a concentration of 0.025 g/mL. What is the optical purity of the sample? What is the % of the dominant enantiomer in this sample?
An Ice cube tray holds 325 grams of water. If the water initially has a temperature of 25 C, how many kilojoules of heat must be removed to cool and freeze the water 0 C?
What are the pH, pOH, hydroxide ion concentration, and hydronium ion concentration of a 0.014-M diprotic acid solution?
Write the cell notation for a voltaic cell with the following half-reactions.
How do I express quantities using significant figures to imply errors. An example question is 1.989 +/- 0.0003
A sample of nitrogen gas kept in a container of volume 2.9 L and at a temperature of 39°C exerts a pressure of 4.7 atm. Calculate the number of moles of gas present
What is the wavelengths associated with an electron moving at 1.5x10^8 cm/s and a 60g tennis ball moving 1500 cm/s. Which particle has a longer wavelength
What are the quantum numbers associated with the last electron[highest energy] in ground state Zn. please be very explicit as to the process and confer all of your internal dialog as you perform the exercise.
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