Which of the following statements is NOT true? 1. The density of liquids changes with changes...
Which of the following statements is NOT true?
1. The density of liquids changes with changes in temperature, but only a little.
2. The density of a material does not depend on the total amount of material you have.
3. Gases have lower densities than liquids because the atoms/molecules are much further apart.
4. Compressing a given amount of fluid to half its original volume leaves the density unchanged because only the ratio of mass and volume matters.
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Which of the following statements is NOT true?
1. The density of liquids changes with changes...
1. Which of the following statements is not consistent with the kinetic-molecular theory of gas? a....
1. Which of the following statements is not consistent with the kinetic-molecular theory of gas? a. The volume occupied by the gas molecules only becomes significant at very low pressures b. A given volume of gas is mostly empty space except near the condensing point c. Except near condensing point, the attractive forces between gas molecules are very small d. The attractive forces between the molecules only becomes significant at very low temperatures 2. Which of the following statements does...
9-16 When liquids freeze the density changes, which means that the volume changes as well. Water...
9-16 When liquids freeze the density changes, which means that the volume changes as well. Water is one of the few liquids that expand when frozen. That is why it is a bad idea to put water in the freezer in a sealed container. Pete decides to test this idea. He sticks an unopened soft drink can in the freezer. Given: In liquid form the soft drink has a density of 1.11 x 103 kg/m3, more dense than water because...
h of the following statements is NOT true? London dispersion forces are present in all substances but are the only significant intermolecular forces in nonpolar substances. ) The density of the l...
h of the following statements is NOT true? London dispersion forces are present in all substances but are the only significant intermolecular forces in nonpolar substances. ) The density of the liquid state of a substance is greater than the density of its gaseous state. The thermal energy in a liquid allows the atoms within molecules to completely overcome the attractions between them so they flow. Most liquids can be converted to a gas by reducing pressure and/or heating. The...
QUESTION 1 Which of the following is a property of both gases and liquids? a. Indefinite...
QUESTION 1 Which of the following is a property of both gases and liquids? a. Indefinite volume b. Definite shape c. Definite volume d. Indefinite shape QUESTION 2 In which of the following pairs of chemical formulas do the two members of the pair contain the same number of elements as well as the same number of atoms? a. CoBry and COBr2 b. Cs and CS c. CoCl2 and CoCl3 d. NH4Brand NISO4 QUESTION 3 Which of the following statements...
3. Which of the following statements best explains why nitrogen gas at STP is less dense...
3. Which of the following statements best explains why nitrogen gas at STP is less dense than Xe Has at STP? a) Because Xe is a noble gas, there is less tendency for the Xe atoms to repel one another, so they pack more densely in the gas state. b) Xe atoms have a higher mass than N2 molecules, Because both gases at STP have the same number of molecules per unit volume, the Xe gas must be denser, c)...
Lab Exercise: Liquids and Gases Answer Key LAB EXERCISE: LIQUIDS AND GASES Part 1: Buoyancy Fill...
Lab Exercise: Liquids and Gases Answer Key
LAB EXERCISE: LIQUIDS AND GASES Part 1: Buoyancy Fill a large glass half full of water. 1. Carefully place a raw egg in the glass of water. 2. Does the egg sink or float? 3. 4. Based on the results, which do you think is the most dense? The egg or the water? 5. Gradually add salt to the water, stirring after each addition to dissolve it. Careful! Don't break the egg! Keep...
5) Consider the phase diagram for carbon dioxide(10). Supercritical fluid Solid Liquid Pressure (atm) -78.5 -56.4...
5) Consider the phase diagram for carbon dioxide(10). Supercritical fluid Solid Liquid Pressure (atm) -78.5 -56.4 Temperature (°C)— a) What is the critical temperature for carbon dioxide? b) What is the critical pressure for carbon dioxide? c) What phase(s) is/are present at -10°C and 30 atm. d) What phase(s) is/are present at -60°C and 10 atm. - e) What phase(s) is/are present at-78.5°C and 1 atm. f) What phase(s) is/are present at-56.4°C and 5.11 atm. g) What is the normal...
Chapter 5 HW 1. Determine whether the following statements are true or false A) Gasses have...
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compressibility and In comparing gases with liquids, gases have A) greater; smaller D) smaller; greater density....
compressibility and In comparing gases with liquids, gases have A) greater; smaller D) smaller; greater density. C) Smaller; smaller B) greater; greater E) none of the above Which process is exothermic? A) solidgas D) gas B) liquidgas E) none of the above Csolid liquid liquid Which pair of molecules has hydrogen bond interactions? ) NH3 and CH4 ) CO2 and CO2 B NH3 and C2H5OHC) CH4 and CH4 E) CO2 and CH4 hich combination of characteristics is most likely to...
Question 1 (Calculation) Convert the following units (a) 33"c 273 1333 K 0.967 (b) 735 tor o00 Pa L () 0.15 m2s...
Question 1 (Calculation) Convert the following units (a) 33"c 273 1333 K 0.967 (b) 735 tor o00 Pa L () 0.15 m2s 710 t Why? Deaing with unts nolding converting rits·isome to geting the science rigt Not omdy accounting for units can lead to costy mistakes- ike NASA crashing a billion-dollar spaceship into a planet because of a mistake with units of feetmetres Question 2 (Crtical Thinking) Kinetic model of gases: Understand trends and interpret the density, pm/ deal gas...
9-16 When liquids freeze the density changes, which means that the volume changes as well. Water is one of the few liquids that expand when frozen. That is why it is a bad idea to put water in the freezer in a sealed container. Pete decides to test this idea. He sticks an unopened soft drink can in the freezer. Given: In liquid form the soft drink has a density of 1.11 x 103 kg/m3, more dense than water because...
h of the following statements is NOT true? London dispersion forces are present in all substances but are the only significant intermolecular forces in nonpolar substances. ) The density of the liquid state of a substance is greater than the density of its gaseous state. The thermal energy in a liquid allows the atoms within molecules to completely overcome the attractions between them so they flow. Most liquids can be converted to a gas by reducing pressure and/or heating. The...
QUESTION 1 Which of the following is a property of both gases and liquids? a. Indefinite volume b. Definite shape c. Definite volume d. Indefinite shape QUESTION 2 In which of the following pairs of chemical formulas do the two members of the pair contain the same number of elements as well as the same number of atoms? a. CoBry and COBr2 b. Cs and CS c. CoCl2 and CoCl3 d. NH4Brand NISO4 QUESTION 3 Which of the following statements...
3. Which of the following statements best explains why nitrogen gas at STP is less dense than Xe Has at STP? a) Because Xe is a noble gas, there is less tendency for the Xe atoms to repel one another, so they pack more densely in the gas state. b) Xe atoms have a higher mass than N2 molecules, Because both gases at STP have the same number of molecules per unit volume, the Xe gas must be denser, c)...
Lab Exercise: Liquids and Gases Answer Key
LAB EXERCISE: LIQUIDS AND GASES Part 1: Buoyancy Fill a large glass half full of water. 1. Carefully place a raw egg in the glass of water. 2. Does the egg sink or float? 3. 4. Based on the results, which do you think is the most dense? The egg or the water? 5. Gradually add salt to the water, stirring after each addition to dissolve it. Careful! Don't break the egg! Keep...
5) Consider the phase diagram for carbon dioxide(10). Supercritical fluid Solid Liquid Pressure (atm) -78.5 -56.4 Temperature (°C)— a) What is the critical temperature for carbon dioxide? b) What is the critical pressure for carbon dioxide? c) What phase(s) is/are present at -10°C and 30 atm. d) What phase(s) is/are present at -60°C and 10 atm. - e) What phase(s) is/are present at-78.5°C and 1 atm. f) What phase(s) is/are present at-56.4°C and 5.11 atm. g) What is the normal...
Chapter 5 HW 1. Determine whether the following statements are true or false A) Gasses have a high density B) Neon diffuses faster than argon C) Gas pressure is the result of particles of a gas colliding with each other D) Increased temperature of a gas result in increased gas pressure because particles move faster, collide more often and harder with the wall E) Gases are mostly empty space. F) When the temperature of a gas increases, the volume of...
compressibility and In comparing gases with liquids, gases have A) greater; smaller D) smaller; greater density. C) Smaller; smaller B) greater; greater E) none of the above Which process is exothermic? A) solidgas D) gas B) liquidgas E) none of the above Csolid liquid liquid Which pair of molecules has hydrogen bond interactions? ) NH3 and CH4 ) CO2 and CO2 B NH3 and C2H5OHC) CH4 and CH4 E) CO2 and CH4 hich combination of characteristics is most likely to...
Question 1 (Calculation) Convert the following units (a) 33"c 273 1333 K 0.967 (b) 735 tor o00 Pa L () 0.15 m2s 710 t Why? Deaing with unts nolding converting rits·isome to geting the science rigt Not omdy accounting for units can lead to costy mistakes- ike NASA crashing a billion-dollar spaceship into a planet because of a mistake with units of feetmetres Question 2 (Crtical Thinking) Kinetic model of gases: Understand trends and interpret the density, pm/ deal gas...
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