Chemistry, 08.07.2019 19:00, sasalinas2001

Which are most closely associated with an element on the periodic table? ? a.) those in the same state (i. e., solid, liquid, gas) b.) those in the same row c.) those in the same column

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Physics, 22.06.2019 18:30, Felici8617

4. now look at the green lines you created by connecting the three boiling point data points and the three melting point data points. for each of these lines, describe any trends you see. 5. locate the elements on your periodic table that you circled in green on your graph. what term or description would you use to identify these elements with respect to the periodic table? 7. using the room temperature line (orange line) and your periodic table, make lists that identify the state of matter (gas, liquid, or solid) in which each element you plotted exists at room temperature. explain your answers.

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Arts, 25.09.2019 19:10, Adolfosbaby

1.solve this problem using the appropriate law. (remember that ) what is the pressure of 1.9 mols of nitrogen gas in a 9.45 l tank and at a temperature of 228 k? 3.76 atm-answer 2. calculate the amount of heat required or released. you will need to use your periodic table, table b-3, table b-4, and table b-5 in your chemistry reference guide. how much heat is required to change 100 g of ice (h2o) at 253 k to vapor (steam) at 393 k? 309 kj-answer 3. calculate the amount of heat required or released. you will need to use your periodic table, table b-3, table b-4, and table b-5 in your crg. lead melts at 328 ℃. how much heat is required when 23.0 g of solid lead at 297 k condenses to a liquid at 702 k? 0.58 kj-answer 4.the amount of heat energy required to change one mole of a liquid to a gas at its boiling point and at a constant pressure is molar enthalpy of vaporization-answer 5. changing from a liquid to a solid is solidification-answer 6. during heating, once the temperature of a substance reaches the boiling point, the temperature will not rise again until additional heat called the has been added. specific heat-answer 7. what is the volume of 7.25 g of oxygen gas at stp? 5.08 l-answer 8.the temperature and pressure at which a substance can exist in equilibrium between its solid, liquid, and gaseous states is called its triple point-answer 9. which is not a postulate of the kinetic-molecular theory of matter? (read carefully! ) these particles are in constant motion, which is rapid and random.-answer 10. solve this problem using the appropriate law. use table b-6 from the crg. hydrogen gas was collected by water displacement. what was pressure of the h2 collected if the temperature was 24°c? 97 kpa-answer 11. a liquid changes state to a gas at or above its boiling point by vaporization-answer 12. solve this problem using the appropriate law. what is the pressure of 0.500 moles of carbon dioxide gas in a 2.5 l tank and at a temperature of 301 k? (r=0.0821 l·atm/mol·k) 4.94 atm-answer 13. is a change of state from a gas to a solid without first becoming a liquid. deposition-answer 14. solve this problem using the appropriate law. before it was launched, a helium-filled balloon had a pressure of 101 kpa at a temperature of 20°c. at an altitude of 15 000 m, the pressure had decreased to 11.7 kpa and the temperature had dropped to -56 °c. the volume of the balloon increased to 35. 4 m3. what is the original volume of the balloon? 43.0 m3-answer 15. solve this problem using the appropriate law. (use table b-6 from the crg.) nitrogen gas was collected by water displacement. what was the pressure of the n2 collected if the temperature was 50 ℃? 87.7 kpa-answer 16. the term is used for a substance whose particles are arranged in a random manner. amorphous solid-answer 17. changing from a vapor or a gas to a liquid is condensation-answer 18. is a change of state from a solid to a gas without first becoming a liquid. sublimation-answer 19. the ability of a substance to flow fluidity-answer 20. calculate the amount of heat required or released. you will need to use your periodic table, table b-3, table b-4, and table b-5 in your chemistry reference guide. mercury turns to a vapor at 629.88 k. how much heat is lost when 75.0 g of mercury vapor at 650 k condenses to a liquid at 297 k? -25.8 kj-answer 21. solve this problem using the appropriate law. before it was launched, a helium-filled balloon had a pressure of 201 kpa at a temperature of 27°c. at an altitude of 15,000 m, the pressure had decreased to 2.5 kpa and the temperature had dropped to -14 °c. the volume of the balloon increased to 59.3 m3. what is the original volume of the balloon? 13 m3-anwer 22. a liquid changes its state to a gas at temperatures and pressures below the boiling point by vaporization-answer 23. is the term used for an element that can exhibit more than one structural form in the same state-solid, liquid, or gas. allotropic-answer unit cell 24. calculate the amount of heat required or released. you will need to use your periodic table, table b-3, table b-4, and table b-5 in your crg. how much heat is lost when changing 65 g of water vapor (h2o) at 421 k to ice at 139 k? -219.4 kj-answer 25. solve this problem using the appropriate law. what is the volume of 84 g of bromine gas (br2) at stp? 11.77l-answer

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Chemistry, 22.10.2019 23:00, lilroach4

Using the room temperature line (orange line) and your periodic table, make lists that identify the state of matter (gas, liquid, or solid) in which each element you plotted exists at room temperature. explain your answers.

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