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In order to make a pot of water for boiling pasta, a small amount of salt is added to the water to mixture. After the addition of the salt, pasta is added to the pot. Using terms from Lesson 3, describe the mixture of salt in water and then describe the mixture of the pasta in the water. Explain how you know if each of these is homogeneous or heterogeneous. (Lesson 3)
Carbon-12 and carbon-14 are two isotopes of carbon. How are individual atoms of these two isotopes the same? How are they different? Another isotope of carbon is carbon-13. Why is carbon's atomic mass reported on the periodic table as 12.01 when this is not the mass of any of the isotopes? Be sure to use the terms discussed in Lesson 4 in your explanation. (Lesson 4)
What is the dissociation constant, Kd, of a ligand with a percent occupancy (or fractional saturation) of 50% when [ligand] = 10-7 M
a mixture of caco3 and cao weighing 0.665 g was heated to produce gaseous co2. after heating the remaining solid
a bicycle tire is filled with air to a pressure of 100 psi at a temperature of 100 degrees C. Riding the bike on asphalt on a hot day increases the temperature of the tire to 58 degrees C. the volume of the tire is increased by 4%. what is the new..
(the freezing point constant is 1.86 C/m). On the basis of these data, one can conclude that the nonelectrolyte has a molecular weight of?
0.40 moles of an unknown acid (HA)is added to 600 ml of pure water. The pH of the resulting solution is 3.00. What is concentration of A- in the solution. What is the Pka of the acid
the balanced chemeical equation for the reaction of magnesium metal in oxygen gas and for the rection of magnesium metal in nitrogen gas
An ideal solution is made from 5.0 mol of benzene and 3.25 mol of toluene. At 298 K the vapor pressure of pure benzene and toluene is 96.4 Torr and 28.9 Torr respectively. Explain what is the vapor pressure of the mixture. Express your answer in u..
how will the volume of a gas sample change if its temperature is increased? explain without using the ideal gas law
Use net ion equations to show how ammonium chloride (NH4Cl) is acidic and sodium acetate
What is the final concentration of (in M) 15.7 mL potassium hydroxide solution with an initial concentration of 1.553 M which is diluted with 15.6 mL of solvent? Assume the volumes are additive.
What types of intermolecular forces would you expect to exist among molecules of 1-butanol?
In the coordination compound K2[Co(en)Cl4] the coordination number (C.N.) and oxidation number (O.N.) of Cobalt are C.N. = 6; O.N. = +2. C.N. = 6; O.N. = +3. C.N. = 5; O.N. = +2. C.N. = 5; O.N. = +4. C.N. = 4; O.N. = +3.
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