Exercise 1 - Questions
1. Define physical and chemical properties and give at least 3 examples of each type of property.
2. Which substances in Data Table 1 have melting points below room temperature? Are these substances more likely to be ionic or molecular compounds based on melting point alone? Explain.
3. Which substances in Data Table 1 have melting points above room temperature? Are these substances more likely to be ionic or molecular compounds based on melting point alone? Explain.
Homework Answers
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Exercise 1 - Questions
1. Define physical and chemical properties and give at
least 3 examples...
In what physical state does chlorine exist at -65 °C? TABLE 4.1 Physical Properties of Chlorine,...
In what physical state does chlorine exist at -65 °C? TABLE 4.1 Physical Properties of Chlorine, Water, Sugar, and Acetic Acid Boiling point(℃) -34.6 Physical Melting Odor Substance Color Chlorine Yellowish-green Sharp Water Sugar Acetic acid Colorles Taste state point (°C) Sharp,Gas (20°C) -101.6 suffocating Odorless Odorless sour Colorless White Tasteless Liquid Sweet 100.0 Decomposes 0.0 Solid 170-186 118.0 Like vinegar Sour Liquid 16.7
Name Types and Strengths of Attractions Worksheet For each of the following pairs of chemical formulas; (1) identif...
Name Types and Strengths of Attractions Worksheet For each of the following pairs of chemical formulas; (1) identify what type of substance each represents, a. metallic elements b. nonmetallic elements c. ionic compounds d. network crystals e. polar molecular substances f. nonpolar molecular substances (2), identify the primary type of attraction that holds the particles of each in the liquid and solid form, a. metallic bonds, b.ionic bonds, c. covalent bonds, d. hydrogen bonds, e. dipole-dipole interactions, f. London forces...
Colortul Heading 1 Normal Subtitle Selected Chemical and Physical Propotis of Fatty Aeld Condenso...
please
help with 2 and 3 asap thank you!
Colortul Heading 1 Normal Subtitle Selected Chemical and Physical Propotis of Fatty Aeld Condensod structural formula Molecular f ofCC melt lmono- or formula carbon double point C) point(C) poly- atoms bonds unsaturated? C122402 1244 C14H2802 14 C16H3202 16 CI8H3602 18 C20E14002 22 C22H4402 24 C24H4802 2 auric acid CH3(CH2) i OOOOH saturated 56 65 saturated 71 78 Saturated 83 Saturated 86 myristic Saturated 70 75 78 84 CHy(CH2)22COOH Mono -0.1 CH...
1.Give examples of ionic, covalent and metallic bonds. Relate the bond type to regions of the...
1.Give examples of ionic, covalent and metallic bonds. Relate the bond type to regions of the periodic table. Describe some secondary bond types. 2. Draw the iron carbon phase diagram. Label all the phase regions. Indicate a eutectic reaction, a eutectoid reaction and a peritectic reaction. Indicate the structure of a steel containing 0.4%C at 950C, when cooled slowly to 800C, and finally cooled to 600C. Is this steel a hypo or hyper euectoid? 3. Draw a phase diagram from...
*Explanations should be brief. Draw a box around each final answer, if applicable.* 1. Consider intermolecular...
*Explanations should be brief. Draw a box around each final answer, if applicable.* 1. Consider intermolecular forces and kinetic energies with respect to a solid and a liquid. Explain why molecules in a liquid are free to move past each other, while molecules in a solid are held in fixed positions. 2. Use your knowledge of intermolecular forces to provide an explanation for why the boiling point of 2-hexanol is higher than the boiling point of 2,3-dimethyl-2-butanol. Be sure to...
1. Some solids can be converted directly to the vapor phase by heating. The process is...
1. Some solids can be converted directly to the vapor phase by heating. The process is called: a) Fusion b) sublimation c) vaporization d) condensation e) distillation 2. Which one of the following substances is INCORRECTLY matched with the kind of solid it forms? Substance Kind of Solid a) Sulfur dioxide molecular b) Graphite covalent c) Calcium bromide ionic d) Lithium ionic e) Methane molecular 3. Arrange the following in order of increasing melting points: KCl, He, H2O, HF. a)...
please help with filling out this table and answering 8 questions Data Table Br H CH2CH3OH...
please help with filling out this table and answering 8
questions
Data Table Br H CH2CH3OH N-H Bry Chemicals H (E)-Stilbene Ethanol Pyridinium tribromide CsH.Br3N Stilbene Dibromide C14H12Br2 Molecular Formula C14H12 CHO Molecular Weight 180.25 g/mol 46.07 g/mol 319.82 g/mol 340.06 g/mol Physical Properties White solid Clear liquid White solid White solid Melting Point 122-124 °C N/A 127-133 °C 241-243 °C Amount needed 0.25 g 10 mL 0.5 g Mole needed 1.39 mmol 1.56 mmol Amount Used Moles Used Amount...
given the data, what are the ir spectra of? correct me if wrong Basic Solid primary...
given the data, what are the ir spectra of? correct me if
wrong
Basic Solid primary amine Transmittance 70 | NH2 Stretch p-acetvianiline 60 El cq HG NO N Aromatching stretches н Н TILLLLLLLL LLLLLLL 3600 3200 2800 2400 2000 1800 1600 Wavenumber cm-1 1400 1200 1000 300 600 Neutral Solid OL Primary amine (Aniline) 3403cm - NE Transmittances 60 Presence 3258 cm Stretch Ctretches stratar NH2 aromatic NO2 ring 2-nitroaniline K LILI 3600 3200 2800 2400 2000 1800 1600...
help with identifiying each unknown in extraction and washing experiment. the ir spectra are given below,...
help with identifiying each unknown in extraction and washing
experiment. the ir spectra are given below, along with data, and
the lab sheet is attached.
Neutral Solid Primary amine (Aniline) 3403cm - NE presence Transmittance 60 3258cm 1 streren NOUD Streich 50 Ctretcher strator NH2 aromatto 11 NO2 aring 2-nitroaniline K LILI 3600 3200 2800 2400 2000 1800 1600 Wavenumber cm-1 1400 1200 1000 800 600 Basic Solid primary amine Transmittance I NH2 Stretch p-acetvianiline 70 60 CS HG NO...
please I need help with the data sheet INTRODUCTION The chemical and physical properties of substances...
please I need help with the data sheet
INTRODUCTION The chemical and physical properties of substances are influenced by the way in which valence electrons are distributed and by the three-dimensional shape of the molecule or ion. X- ray and neutron diffraction, infrared, Raman and microwave absorption spectroscopy, as well as dipole moment measurements are used to ascertain the three-dimensional structure of a substance. Thus, techniques are available which can identify the geometry of substances. Results of these measurements generally...
In what physical state does chlorine exist at -65 °C? TABLE 4.1 Physical Properties of Chlorine, Water, Sugar, and Acetic Acid Boiling point(℃) -34.6 Physical Melting Odor Substance Color Chlorine Yellowish-green Sharp Water Sugar Acetic acid Colorles Taste state point (°C) Sharp,Gas (20°C) -101.6 suffocating Odorless Odorless sour Colorless White Tasteless Liquid Sweet 100.0 Decomposes 0.0 Solid 170-186 118.0 Like vinegar Sour Liquid 16.7
Name Types and Strengths of Attractions Worksheet For each of the following pairs of chemical formulas; (1) identify what type of substance each represents, a. metallic elements b. nonmetallic elements c. ionic compounds d. network crystals e. polar molecular substances f. nonpolar molecular substances (2), identify the primary type of attraction that holds the particles of each in the liquid and solid form, a. metallic bonds, b.ionic bonds, c. covalent bonds, d. hydrogen bonds, e. dipole-dipole interactions, f. London forces...
please
help with 2 and 3 asap thank you!
Colortul Heading 1 Normal Subtitle Selected Chemical and Physical Propotis of Fatty Aeld Condensod structural formula Molecular f ofCC melt lmono- or formula carbon double point C) point(C) poly- atoms bonds unsaturated? C122402 1244 C14H2802 14 C16H3202 16 CI8H3602 18 C20E14002 22 C22H4402 24 C24H4802 2 auric acid CH3(CH2) i OOOOH saturated 56 65 saturated 71 78 Saturated 83 Saturated 86 myristic Saturated 70 75 78 84 CHy(CH2)22COOH Mono -0.1 CH...
*Explanations should be brief. Draw a box around each final answer, if applicable.* 1. Consider intermolecular forces and kinetic energies with respect to a solid and a liquid. Explain why molecules in a liquid are free to move past each other, while molecules in a solid are held in fixed positions. 2. Use your knowledge of intermolecular forces to provide an explanation for why the boiling point of 2-hexanol is higher than the boiling point of 2,3-dimethyl-2-butanol. Be sure to...
1. Some solids can be converted directly to the vapor phase by heating. The process is called: a) Fusion b) sublimation c) vaporization d) condensation e) distillation 2. Which one of the following substances is INCORRECTLY matched with the kind of solid it forms? Substance Kind of Solid a) Sulfur dioxide molecular b) Graphite covalent c) Calcium bromide ionic d) Lithium ionic e) Methane molecular 3. Arrange the following in order of increasing melting points: KCl, He, H2O, HF. a)...
please help with filling out this table and answering 8
questions
Data Table Br H CH2CH3OH N-H Bry Chemicals H (E)-Stilbene Ethanol Pyridinium tribromide CsH.Br3N Stilbene Dibromide C14H12Br2 Molecular Formula C14H12 CHO Molecular Weight 180.25 g/mol 46.07 g/mol 319.82 g/mol 340.06 g/mol Physical Properties White solid Clear liquid White solid White solid Melting Point 122-124 °C N/A 127-133 °C 241-243 °C Amount needed 0.25 g 10 mL 0.5 g Mole needed 1.39 mmol 1.56 mmol Amount Used Moles Used Amount...
given the data, what are the ir spectra of? correct me if
wrong
Basic Solid primary amine Transmittance 70 | NH2 Stretch p-acetvianiline 60 El cq HG NO N Aromatching stretches н Н TILLLLLLLL LLLLLLL 3600 3200 2800 2400 2000 1800 1600 Wavenumber cm-1 1400 1200 1000 300 600 Neutral Solid OL Primary amine (Aniline) 3403cm - NE Transmittances 60 Presence 3258 cm Stretch Ctretches stratar NH2 aromatic NO2 ring 2-nitroaniline K LILI 3600 3200 2800 2400 2000 1800 1600...
help with identifiying each unknown in extraction and washing
experiment. the ir spectra are given below, along with data, and
the lab sheet is attached.
Neutral Solid Primary amine (Aniline) 3403cm - NE presence Transmittance 60 3258cm 1 streren NOUD Streich 50 Ctretcher strator NH2 aromatto 11 NO2 aring 2-nitroaniline K LILI 3600 3200 2800 2400 2000 1800 1600 Wavenumber cm-1 1400 1200 1000 800 600 Basic Solid primary amine Transmittance I NH2 Stretch p-acetvianiline 70 60 CS HG NO...
please I need help with the data sheet
INTRODUCTION The chemical and physical properties of substances are influenced by the way in which valence electrons are distributed and by the three-dimensional shape of the molecule or ion. X- ray and neutron diffraction, infrared, Raman and microwave absorption spectroscopy, as well as dipole moment measurements are used to ascertain the three-dimensional structure of a substance. Thus, techniques are available which can identify the geometry of substances. Results of these measurements generally...
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