Concept explainers
(a)
Interpretation:
The physical state of air in the room is to be determined.
Concept introduction:
Anything that has mass and volume is defined as a matter. The matter is classified as solids, liquids, and gases on the basis of a state that depends on the physical form of matter.
In solids, the atoms and molecules have fixed positions and are closely packed to each other. The atoms and molecules in the solid state only vibrate and do not move over each other. Therefore, a solid has a rigid shape and fixed volume. The examples of matter that are solid are ice and diamond.
In liquids, atoms and molecules are also closely packed to each other but they can move over each other. Thus, liquids have fixed volume but they do not have a fixed shape. Liquids occupy the shape of the container. The examples of matter that are liquid are water and alcohol.
In gases, the atoms and molecules have space between them and can easily move over each other hence gases are compressible. Gases neither have fixed shape nor volume. It occupies the shape and volume of the container. The examples of matter that are gases are nitrogen and carbon dioxide.
(b)
Interpretation:
The physical state of tablets in a bottle of vitamins is to be determined.
Concept introduction:
Anything that has mass and volume is defined as a matter. The matter is classified as solids, liquids, and gases on the basis of a state that depends on the physical form of matter.
In solids, the atoms and molecules have fixed positions and are closely packed to each other. The atoms and molecules in the solid state only vibrate and do not move over each other. Therefore, a solid has a rigid shape and fixed volume. The examples of matter that are solid are ice and diamond.
In liquids, atoms and molecules are also closely packed to each other but they can move over each other. Thus, liquids have fixed volume but they do not have a fixed shape. Liquids occupy the shape of the container. The examples of matter that are liquid are water and alcohol.
In gases, the atoms and molecules have space between them and can easily move over each other hence gases are compressible. Gases neither have fixed shape nor volume. It occupies the shape and volume of the container. The examples of matter that are gases are nitrogen and carbon dioxide.
(c)
Interpretation:
The physical state of sugar in a packet is to be determined.
Concept introduction:
Anything that has mass and volume is defined as a matter. The matter is classified as solids, liquids, and gases on the basis of a state that depends on the physical form of matter.
In solids, the atoms and molecules have fixed positions and are closely packed to each other. The atoms and molecules in the solid state only vibrate and do not move over each other. Therefore, a solid has a rigid shape and fixed volume. The examples of matter that are solid are ice and diamond.
In liquids, atoms and molecules are also closely packed to each other but they can move over each other. Thus, liquids have fixed volume but they do not have a fixed shape. Liquids occupy the shape of the container. The examples of matter that are liquid are water and alcohol.
In gases, the atoms and molecules have space between them and can easily move over each other hence gases are compressible. Gases neither have fixed shape nor volume. It occupies the shape and volume of the container. The examples of matter that are gases are nitrogen and carbon dioxide.
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Chapter 1 Solutions
CHEMISTRY: MOLECULAR...(LL) W/ALEKS
- Nonearrow_forward(9 Pts) In one of the two Rare Earth element rows of the periodic table, identify an exception to the general ionization energy (IE) trend. For the two elements involved, answer the following questions. Be sure to cite sources for all physical data that you use. a. (2 pts) Identify the two elements and write their electronic configurations. b. (2 pts) Based on their configurations, propose a reason for the IE trend exception. c. (5 pts) Calculate effective nuclear charges for the last electron in each element and the Allred-Rochow electronegativity values for the two elements. Can any of these values explain the IE trend exception? Explain how (not) - include a description of how IE relates to electronegativity.arrow_forwardPlease explain thoroughly and provide steps to draw.arrow_forward
- As you can see in the picture, the instrument uses a Xe source. Given that the instrument is capable of measuring from 200-800nm, if Xe was not used, what other source(s) could be used? Refer to figure 7-3. How many monochrometers does this instrument have? Why? Trace the light as it goes from the Xenon lamp all the way to the circle just slightly to the right and a little bit down from S4. What do you think that circle is? In class we talked about many types of these, which kind do you think this one is for a fluorimeter? Why? Explain. What is/are some strategy(ies) that this instrument has for dealing with noise that you see present in the optics diagram? Why does a fluorescence cuvette have to be clear on four sides?arrow_forwardProvide steps and thoroughly solve.arrow_forwardNonearrow_forward
- Devise a synthesis to prepare 4-tert-butyl-2-nitrotoluene from toluene. Complete the following reaction scheme. Part 1 of 4 Step 1 Step 2 A B Draw the structure for compound B, 4-tert-butyl-2-nitrotoluene. Click and drag to start drawing a structure. 'O Х ப:arrow_forwardWhat is N hybridized? sp3 or sp2? whyarrow_forwardDate Unknown o Hydrated Salt Lab Sec. Name Trial I Trial 2 1. Mass of fired crucible and lid (g) 2. Mass of fired crucible, lid, and hydrated sah (g) 3. Instructor's approval of flame and apparatus 4. Mass of crucible, lid, and anhydrous salt Ist mass measurement (g) 2nd mass measurement (g) 3rd mass measurement (g). Desk No. Trial 3 48.833 46.808 213.692 51.507 9.359 46,615 50.296 48.211 45.351 50.142 48.146 45.1911 50.103 48.132 45.186 5. Final mass of crucible, lid, and anhydrous salt (g) 50.180 4.13 45.243 Calculations 1. Mass of hydrated salt (g) 2. Mass of anhydrous salt (g) 2.674 2.491 2.9239 1.3479 1.2959 1.5519 3. Mass of water lost (g) 1.32791969 1.322g 4. Percent by mass of volatile water in hydrated salt (%) 49.6% 48% 216.9% 5. Average percent HO in bydrated salt (%H,O) 5. Standard deviation of %H,O Relative standard deviation of %H,O in hydrated salt (RSD) how calculations on next page. 48.17% Data Analysis, B Data Analysis, C Data Analysis, D Experiment 5 89arrow_forward
- Considering the irregular electronic configurations we discussed for certain transitionmetals, think about the possibility of silicon (Si) having a [Ne]3s 2 3p 2 configuration vs.[Ne]3s 1 3p 3. Discuss the pros and cons of both configurations. Which one does Si actuallyadopt and why?arrow_forward(5 Pts) Currently, the last element in the periodic table is number 118, oganesson (Og). Channel your inner Dimitri Mendeleev and predict element 119’s electronic configuration, atomic mass, density, and either melting or boiling point. Justify your answers.arrow_forwardDon't used hand raiting and don't used Ai solutionarrow_forward
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