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Which of the following statements is true? a. The critical temperature must be reached to change liquid to gas. b. To melt a solid at constant pressure, the temperature must be above the triple point. c. CHF3 can be expected to have a higher boiling point than CHCl3 because CHF3 has hydrogen bonding. d. One metal crystallizes in a body-centered cubic cell and another in a face-centered cubic cell of the same volume. The two atomic radii are related by the factor (1.5)^1/2
If the average human body discharges 925.0g CO2 per day, how many moles of NaOHare needed each day for each person in the spacecraft?( 42.04 mol NaOH)
A sample of glucose, C6H12O6, contains 1.265 x 1021 carbon atoms. (a) How many atoms of hydrogen does it contain?
The catalytic converter on your automobile contains small amounts of a precious metal catalyst. Which of the following components would you expect to be decreased in your tailpipe emissions.
a 5.00 gram sample of potassium chlorate/potassium chloride mixture was heated in a test tube. A total of 1.00 L of oxygen gas was collected over water at 25 degrees c and 741 torr. determine the percentage of potassium chlorate in the mixture.
A gaseous mixture of O2 and N2 contains 40.8% nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 405mmhg
we then titrated both the aqueous and organic layer. for organic layer, we used 0.1M (S2O3)2- for aqueous layer, we used 0.01M (S203)2- find concentration [I]2 (subscript 2) for aqueous and organic layer
How much heat (in kJ) is evolved in converting 1.00 of steam at 150.0 to ice at -55.0? The heat capacity of steam is 2.01 and of ice is 2.09.
Molecules can be as small as a few atoms or as large as thousands of atoms. In 1962, Max F. Perutz and John C. Kendrew were awarded the Nobel Prize for their discovery of the structure of hemoglobin
construct an energy level diagram (molecular orbital) for the molecule SO. We are then asked to comment on the ionic species of SO - bond order, bond distance etc. So far so good.
Draw the Lewis structure of nitramide with a single bond between the two nitrogen atoms and include formal charges. Are there any resonance structures? If so, please draw these too. Describe the hybridization of the nitrogen atoms.
If the volume of ocean water is 5.4*10^20 contains 4.1 percent sodium chloride ("salt") by mass and the density of the water is 1.86 g/mL.
When 157mg of dipentylamine was added to 122mg of benzoic acid and 2 mL of water, a completey homogenous solution was formed. Draw the structures of the species present in water.
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