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Assume complete dissociation of the compound. What will be the boiling point of a solution of 4 moles of potassium phosphate (K3PO4) dissolved in 4 kg? Use the following values:
How many grams of sodium lactate must be added to a 1.00L solution of .400M lactic acid to make a buffer with a pH of 3.7 ?
The atomic weight of a newly discovered element is 98.225 amu. It has two naturally occuring isotopes. One isotope has a mass of 96.780 amu. The second isotope has a percent abundance of 41.7%. Wha
Describe (that means you have to write in detail) how to prepare an aqueous 5.0 F solution of acetic acid, CH3COOH. You can start with crystals of the acid and deionised distilled water. Please des
Which of the alkyl chlorides listed below undergoes dehydrohalogenation (elimination) in the presence of strong base to give 2-pentene as the ONLY alkene product?
The normal boiling point of ethanol is 78 degrees celsius. If the vapor pressure of ethanol is 13.3 kPa at 34.9 degrees celsius. Calculate the enthalpy of vaporization of ethanol?
When carbon is burned in the presence on oxygen, the carbon and oxygen combine to produce carbon dioxide. If you start with 6 grams of carbon and 16 grams of oxygen and they react completely, how ma
A 35.0-mL sample of 0.20 M LiOH is titrated with 0.25 M HCl. What is the pH of the solution after 23.0 mL of HCl have been added to the base?
Calculate the molarity of a solution of glycerol made by dissolving 69.000 mL glycerol at 15 degrees C in enough water to make 260.00 mL of solution
In the barium chloride laboratory activity, what change occurred in the physical appearance of the barium chloride during the heating process?
The cup is a volume widely used by cooks in the U.S. One cup is equivalent to 237 cm^3. If 1 cup of olive oil has mass of 216 g, what is the density of olive oil in g/cm^3?
Sodium fluoride (NaF) melts at 993C, whereas sodium chloride fluoride melts (NaCl) at 801C. Explain why this is the case in terms of the strength of the ionic bonds formed in both compounds.
What is the Lewis Dot Structure of C2H5Cl
Atomic Masses. (6 pts) An element has two naturally occurring isotopes: Isotope A has a mass of 120.9038 amu and a relative abundance of 57.4%; isotope B has a mass of 122.9042 amu.
The label on a popular brand of margarine states it is made from "partially hydrogenated" corn oil. Which statement is false?
A 1L flask is filled with 1.00 g of argon at 25 C . A sample of ethane vapor is added to the same flask until the total pressure is 1.20 atm. What is partial pressure of Argon and ethane in the fla
Ozonolysis of A followed by dimethyl sulfide reduction produces a single optically active compound C, C5H8O2. Reduction of C with ethereal LiAlH4 affords optically active compound D (C5H12O2) of the (
A student calculates the density of iron as 5.72 g/cm3 by using lab data for mass and volume. A handbook reveals that the correct value is 7.86 g/cm3. What is the percentage error?
A 93-L sample of dry air cools from 145 degrees celicus to -22 degrees celicus while the pressure is maintained at 2.85 atm. What is the final volume?
Cu2+ + Ag D) CH4 + O2 CO2 + H2O E) both A and B 23. Draw a Lewis structure for H3C--NO2. Both oxygen atoms are directly attached to the nitrogen atom.
A graduated cylinder contains 18.5 of water. What is the new water level after 32.0 of silver metal with a density of 10.5 is submerged in the water?
Aluminum has a face-centered cubic unit cell. If the atomic radius of aluminum is 125 pm, what is the edge length of the unit cell? A) 177 pm B) 354 pm C) 217 pm D) 500 pm E) 250 pm 3.
All of the ice melts and the temperature of the water decreases to 0.0 degrees celsius. How many kilograms of water were in the sample?
You have 100 mL graduated cylinder containing 50 mL of water. you drop a 154 g piece of brass (d= 8.56 g/cm3) into the water. how high does the water rise in the graduated cylinder?