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Problem- The freezing point depression constant of water is -1.86 degrees C/m. If 7.50 g NaCl is dissolved in 45.0 g H2O, the freezing point is changed by -9.71 degrees C. Calculate the van't Hoff factor for NaCl.
Please explain how you came up with answer I really want to understand how to calculate this
Not all Friedel-Crafts reacts require a strong Lewis acid catalysts to generate the electrophile for the substitution reaction. Show, using curved arrows, how the electrophile is generated from t-butanol in the presence of H2SO4
What is the correct name and molecular formula for the alcohol deemed "safe" for consumption?
To prepare a solution of NaCl, you weigh out 2.634(±.002)g and dissolve it in a volumetric flask whose volume is 100.00(±0.08)ml. Express the molarity of the solution, along with its uncertainty, with an appropriate number of digit.
How many total moles of ions are released when the following sample dissolves completely in water? 7.24x 10^20 formula units of NiCl2.
how many photons will travel through the pinhole per second. Assume that the light intensity is equally distributed throughout the entire crosssectional area of the beam. (1 W= 1 J/s)
What will the volume of the gas be when dried and measured at STP ( vapor pressure of water at 32 degree Celsius=35.7 torr)
Indicate for each carbon in the following molecules the hybridization, geometric shape, and bond angles: a) CH3CH3
What is the equilibrium constant expression for the following reaction- Pb2+(aq) + 2I?(aq)?PbI2(s) Choose from the list below and enter the letters alphabetical order.
The total volume of seawater is 1.5X10^21 L. Assume that seawater contains 3.1 percent sodium chloride by mass that its density 1s 1.03 g/mL. Calculate the total mass of sodium chloride.
The total precipitate was dissolved in HCl + HNO3. When the solution thus formed was treated with excess NaOH followed by H2O2, a colorless solution and a reddish brown precipitate were formed. The precipitate was found to be soluble in HCl, H2SO4..
Assuming constant pressure, rank these reactions from most energy released by the system to most energy absorbed by the system, based on the following descriptions
Using the abbreviated noble gas notation write the ground state electron configuration of the following ion
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