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A solution that contains 55.0 g of ascorbic acid (Vitamin C) in 250. g of water freezes at -2.34°C. Calculate the molar mass (in units of g/mol) of the solute. Kf of water is 1.86°C/m.
Write the net-ionic equation that represents the reaction that occurs when the C2H5NH2 solution is mixed with the HCl solution.
Chemists often use molarity ,M in Moles/liter , to measure the concentration of solutions. Molarity is a common unit of concentration because the volume of a liquid is very easy to measure
Identify the strongest attractive forces between molecules of each of the following: a) O2; b) SiH4; c) CH3Cl; d) H2O2; e) Ne
"If the crystal field splitting (Δo) is 3.44×10-19 J for a cobalt compound, what wavelength of light (in nm) is absorbed when an electron from a lower energy d orbital is promoted to a higher energy d orbital? What color will the cobalt compound a..
A system obtains the amount of heat equal to q > 0 from the surroundings at constant volume. Will the internal energy of the system increase, decrease, or remain constant? Will the temperature of the system increase or decrease
How many mL of 36 % (g/g) HCl should be diluted to 1.0 L to make a 6.0 M HCl solution? The density of 36% HCl is 1.18 g/mL.
What is the value of Kc for this reaction, In glycolysis, the hydrolysis of ATP to ADP is used to drive the phosphorylation of glucose: Glucose + ATP ADP + glucose - 6 - phosphate
V is the volume, and n is a number that can be 1, 2, 3, ... . Assume that A=1. Determine the work done by the piston. Propose a physical meaning to the term "n" in the above equation.
How many moles of H3O+ must be added to one liter of a solution to adjust the pH from 7.90 to 6.16? Use E notation and 3 significant figures.
Which statement is correct concerning the resulting titration curve when a weak acid is titrated with a strong base
Draw a planar structure for the following compound using dashed or solid wedges to show the stereochemistry of the substituent groups. To be graded properly
The last step in the uranium decay series is Po-210 going to Pb-206 plus the emission of an alpha particle. Listed are the masses of the involved items: Po-210: 209.9829 AMU Pb-206: 205.9745 AMU alpha: 4.00260 AMU Find the energy in Joules release..
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