Organic Chemistry Questions

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Match the percent s character with the atomic orbital Drag and drop options on the right hand side to reorder and match with items on the left Reordering may cause items on the right hand side to swap positions s orbital sp orbital sp orbital 33 50 100
Organic Chemistry
General organic chemistry
Match the percent s character with the atomic orbital Drag and drop options on the right hand side to reorder and match with items on the left Reordering may cause items on the right hand side to swap positions s orbital sp orbital sp orbital 33 50 100
Which of the following alkenes are electron poor and could be used as dienophiles Click all that apply A B C Select all that apply Compound a Compound b Compound c D Compound d CF3
Organic Chemistry
Hydrocarbons
Which of the following alkenes are electron poor and could be used as dienophiles Click all that apply A B C Select all that apply Compound a Compound b Compound c D Compound d CF3
Choose the correct structure of the major product for the following reaction A B C Compound a a Compound b Compound c D Compound d CI b HCI 40 C CI
Organic Chemistry
Hydrocarbons
Choose the correct structure of the major product for the following reaction A B C Compound a a Compound b Compound c D Compound d CI b HCI 40 C CI
12 What is the main function of a CMA a The report assists the seller in finding buyers interested in purchasing a home b The report assists the buyer or seller in determining the proper list price and fa just the buyer the proper offer price c The report shows the comparable prices of homes in a neighborhood d The report assists the buyer in finding homes available to purchase
Organic Chemistry
Practical Detection
12 What is the main function of a CMA a The report assists the seller in finding buyers interested in purchasing a home b The report assists the buyer or seller in determining the proper list price and fa just the buyer the proper offer price c The report shows the comparable prices of homes in a neighborhood d The report assists the buyer in finding homes available to purchase
Consider the two products formed Which product is more stable A B C D Compound 1 because it is a disubstituted alkene Compound 1 because it is a monosubstituted alkene Compound 2 because it is a disubstituted alkene Compound 2 because it is a monosubstituted alkene Br 1 2 addition 1 4 addition Br
Organic Chemistry
Hydrocarbons
Consider the two products formed Which product is more stable A B C D Compound 1 because it is a disubstituted alkene Compound 1 because it is a monosubstituted alkene Compound 2 because it is a disubstituted alkene Compound 2 because it is a monosubstituted alkene Br 1 2 addition 1 4 addition Br
Choose the major product formed in the following reaction A B C Compound a E Compound b Compound c D Compound d Compound e CO CH CO CH CO CH CO CH 150 C CO CH CO CH d CO CH CO CH
Organic Chemistry
Aldehydes & Ketones
Choose the major product formed in the following reaction A B C Compound a E Compound b Compound c D Compound d Compound e CO CH CO CH CO CH CO CH 150 C CO CH CO CH d CO CH CO CH
Rank the indicated C C bond lengths in the following molecule from longest to shortest longest at the top Drag and drop options into correct order and submit Bond 1 Bond 4 Bond 3 Bond 2 1 3 III
Organic Chemistry
General organic chemistry
Rank the indicated C C bond lengths in the following molecule from longest to shortest longest at the top Drag and drop options into correct order and submit Bond 1 Bond 4 Bond 3 Bond 2 1 3 III
Select the correct ranking of stability for the carbocations A D from lowest to highest Drag and drop options into correct order and submit Carbocation D Carbocation A Carbocation B Carbocation C
Organic Chemistry
General organic chemistry
Select the correct ranking of stability for the carbocations A D from lowest to highest Drag and drop options into correct order and submit Carbocation D Carbocation A Carbocation B Carbocation C
A student places 5 3 g of a solid substance into a test tube and heats it up After heating it and then letting it cool they weigh the substance again To their surprise the mass is now 3 6 g In a few sentences explain to the student which type of reaction this likely was and also explain how this relates to mass conservation Explain to the student why they experiences a decrease in mass
Organic Chemistry
Practical Detection
A student places 5 3 g of a solid substance into a test tube and heats it up After heating it and then letting it cool they weigh the substance again To their surprise the mass is now 3 6 g In a few sentences explain to the student which type of reaction this likely was and also explain how this relates to mass conservation Explain to the student why they experiences a decrease in mass
Label the following reaction as either a cycloaddition sigmatropic rearrangement or an electrocyclic reaction A Cycloaddition B Sigmatropic rearrangement C Electrocyclic reaction
Organic Chemistry
Hydrocarbons
Label the following reaction as either a cycloaddition sigmatropic rearrangement or an electrocyclic reaction A Cycloaddition B Sigmatropic rearrangement C Electrocyclic reaction
32p has a half life of 14 3 days The original sample of 32P has a mass of 1 88 g Approximately what mass of P 32 will remain after 6 half lives 0 188 g O 0 0294 g O None of the answers are correct 0 0588 g 0 352 g 0 101 g
Organic Chemistry
Practical Detection
32p has a half life of 14 3 days The original sample of 32P has a mass of 1 88 g Approximately what mass of P 32 will remain after 6 half lives 0 188 g O 0 0294 g O None of the answers are correct 0 0588 g 0 352 g 0 101 g
How many grams of aluminum metal does it take to react completely with 2 5 grams of nitrogen gas 5 0 3
Organic Chemistry
General organic chemistry
How many grams of aluminum metal does it take to react completely with 2 5 grams of nitrogen gas 5 0 3
The two resonance structures of an allylic carbocation intermediate is given below If you consider these two resonance structures as isolated compounds which structure would be more stable A B Compound 1 because the charge is on a secondary carbon Compound 2 because the charge is on a primary carbon 1 2
Organic Chemistry
General organic chemistry
The two resonance structures of an allylic carbocation intermediate is given below If you consider these two resonance structures as isolated compounds which structure would be more stable A B Compound 1 because the charge is on a secondary carbon Compound 2 because the charge is on a primary carbon 1 2
Consider the initial conditions of a gas Variable T V P Variable T Initial Value V 400 K Determine the missing value for the final pressure given the other final condit 250 L 3 30 atm Final Value 1170 K 130 L
Organic Chemistry
General organic chemistry
Consider the initial conditions of a gas Variable T V P Variable T Initial Value V 400 K Determine the missing value for the final pressure given the other final condit 250 L 3 30 atm Final Value 1170 K 130 L
low many asymmetric carbons are present in the compound below N O H I OH
Organic Chemistry
Hydrocarbons
low many asymmetric carbons are present in the compound below N O H I OH
Protonation of isoprene can occur in two different locations to form two different resonance stabilized allylic cations Which is more stable A B C D 1 2 Compound 1 because the positive charge is on primary and secondary allylic carbocations Compound 1 because the positive charge is on a primary and a tertiary carbon Compound 2 because the positive charge is on a primary and a secondary carbon Compound 2 because the positive charge is on a secondary carbon isoprene H A H A and a tertiary A A
Organic Chemistry
General organic chemistry
Protonation of isoprene can occur in two different locations to form two different resonance stabilized allylic cations Which is more stable A B C D 1 2 Compound 1 because the positive charge is on primary and secondary allylic carbocations Compound 1 because the positive charge is on a primary and a tertiary carbon Compound 2 because the positive charge is on a primary and a secondary carbon Compound 2 because the positive charge is on a secondary carbon isoprene H A H A and a tertiary A A
For the following equation H SO4 2NaOH 2H2 O Na SO4 Identify the limiting reactant when 9 65 g H SO4 reacts with 6 10 g of NaOH
Organic Chemistry
General organic chemistry
For the following equation H SO4 2NaOH 2H2 O Na SO4 Identify the limiting reactant when 9 65 g H SO4 reacts with 6 10 g of NaOH
15 Trina is a sales agent comparing properties for a client who wants to sell his property Where would Trina look for comparable properties a a home in another county b a home 20 miles away c a home in close proximity d a home in another city
Organic Chemistry
Chemistry in Daily Life
15 Trina is a sales agent comparing properties for a client who wants to sell his property Where would Trina look for comparable properties a a home in another county b a home 20 miles away c a home in close proximity d a home in another city
Which molecule should have the larger heat of hydrogenation 1 3 or 1 4 pentadiene A A 1 3 pentadiene B 1 4 pentadiene B
Organic Chemistry
Hydrocarbons
Which molecule should have the larger heat of hydrogenation 1 3 or 1 4 pentadiene A A 1 3 pentadiene B 1 4 pentadiene B
quati how pure silver Ag is extracted from ores of AgK CN 2 potassium argentocyanide which is mined from the earth Zinc is a reactant in the equation and it is needed in order to extract the silver from the potassium argentocyanide ore 2AgK CN 2 aq Zn s 2 Ag s Zn CN 2 aq 2KCN aq 2004 T IN GOD WE TRUST https en wikipedia org wiki Silver media File American Silver Eagle obverse 2004 jpg How many atoms of pure zinc Zn are needed in the production process to create a pure silver coin of mass 34 01 grams Answer Zn atoms Format scientific notation using e for example 5 84x1016 is entered as 5 84e16
Organic Chemistry
General organic chemistry
quati how pure silver Ag is extracted from ores of AgK CN 2 potassium argentocyanide which is mined from the earth Zinc is a reactant in the equation and it is needed in order to extract the silver from the potassium argentocyanide ore 2AgK CN 2 aq Zn s 2 Ag s Zn CN 2 aq 2KCN aq 2004 T IN GOD WE TRUST https en wikipedia org wiki Silver media File American Silver Eagle obverse 2004 jpg How many atoms of pure zinc Zn are needed in the production process to create a pure silver coin of mass 34 01 grams Answer Zn atoms Format scientific notation using e for example 5 84x1016 is entered as 5 84e16
8 C H4 3 0 2 CO2 2H O 9 2 KClO3 2 KCl 3 02 10 Pb NO3 2 2 NaCl 2 NaNO3 PbCl2 Type of Reaction Type of Reaction Type of Reaction Oxygen 11 What type of reaction is shown to the left Carbon 8 8 80 12 Using the key provided write the complete chemical formula shown in the box above 13 Now balance the equation above so that both sides of the reaction are equal 27 W 28 29
Organic Chemistry
Chemistry in Daily Life
8 C H4 3 0 2 CO2 2H O 9 2 KClO3 2 KCl 3 02 10 Pb NO3 2 2 NaCl 2 NaNO3 PbCl2 Type of Reaction Type of Reaction Type of Reaction Oxygen 11 What type of reaction is shown to the left Carbon 8 8 80 12 Using the key provided write the complete chemical formula shown in the box above 13 Now balance the equation above so that both sides of the reaction are equal 27 W 28 29
What is the particle behavior of Formaldehyde like O C
Organic Chemistry
Aldehydes & Ketones
What is the particle behavior of Formaldehyde like O C
20 The group of prospects who can be considered potential buyers is called what a scarious b buyer demographic c buyer pool d potential buyers
Organic Chemistry
Practical Detection
20 The group of prospects who can be considered potential buyers is called what a scarious b buyer demographic c buyer pool d potential buyers
Select one A chemist mixed Liquid A and Liquid B together A solid formed in the bottom of the container The chemist dried the solid material and weighed it The data table shows all of the material masses Mixing Experiment O Substance Liquid A Liquid B O Solid Based on this data how much liquid C was in the container with the solid after the materials were mixed 100 grams O 0 grams 200 grams Mass O 300 grams 100 grams 100 grams 100 grams LIQUID ALIQUID B SOLID LIQUID C
Organic Chemistry
Practical Detection
Select one A chemist mixed Liquid A and Liquid B together A solid formed in the bottom of the container The chemist dried the solid material and weighed it The data table shows all of the material masses Mixing Experiment O Substance Liquid A Liquid B O Solid Based on this data how much liquid C was in the container with the solid after the materials were mixed 100 grams O 0 grams 200 grams Mass O 300 grams 100 grams 100 grams 100 grams LIQUID ALIQUID B SOLID LIQUID C
a Conservation of Mass Question 6 Fe O Fe O3 Select one a What should the coefficient for the diatomic oxygen O be when this equation is correctly balanced 1 O
Organic Chemistry
General organic chemistry
a Conservation of Mass Question 6 Fe O Fe O3 Select one a What should the coefficient for the diatomic oxygen O be when this equation is correctly balanced 1 O
Select one De a De H O2 2H O Which statement correctly supports the argument that the illustrated chemical equation shown violates the law of conservation of matter 12 O There are more hydrogen atoms on the right side of the arrow then on the left side O There are more hydrogen atoms on the left side of the arrow then on the right side O There are more oxygen atoms on the left side of the arrow then on the right side O There are more oxygen atoms on the right side of the arrow then on the left side
Organic Chemistry
General organic chemistry
Select one De a De H O2 2H O Which statement correctly supports the argument that the illustrated chemical equation shown violates the law of conservation of matter 12 O There are more hydrogen atoms on the right side of the arrow then on the left side O There are more hydrogen atoms on the left side of the arrow then on the right side O There are more oxygen atoms on the left side of the arrow then on the right side O There are more oxygen atoms on the right side of the arrow then on the left side
102 81 The following unbalanced equation shows how hydrogen and oxygen combine to form water Select one 18 2H O H O When the equation is balanced the coefficient for water H O will be O4 O 0 O2 O 1
Organic Chemistry
General organic chemistry
102 81 The following unbalanced equation shows how hydrogen and oxygen combine to form water Select one 18 2H O H O When the equation is balanced the coefficient for water H O will be O4 O 0 O2 O 1
Conservation of Mass Question 5 The following unbalanced equation shows how hydrogen and oxygen combine to form water 2H O H O When the equation is balanced the coefficient for water H O will be Select one 1 A
Organic Chemistry
General organic chemistry
Conservation of Mass Question 5 The following unbalanced equation shows how hydrogen and oxygen combine to form water 2H O H O When the equation is balanced the coefficient for water H O will be Select one 1 A
Conservation of Mass Question 7 How many water H O molecules will be in the beaker after the reaction Select one a O 2 a 811 50 Chemical Chemical Reaction 10 8 030 Reactants 8 8 88 bob 18 8 Container Q Bebe Reaction Chemical Products Conta Min Reaction
Organic Chemistry
General organic chemistry
Conservation of Mass Question 7 How many water H O molecules will be in the beaker after the reaction Select one a O 2 a 811 50 Chemical Chemical Reaction 10 8 030 Reactants 8 8 88 bob 18 8 Container Q Bebe Reaction Chemical Products Conta Min Reaction
Choose all that apply 8 When a chemical equation is correctly balanced 81 0 all coefficients are in their lowest possible ratio each side of the equation has the same number of atoms of each element there must be a coefficient in front of each chemical formula
Organic Chemistry
General organic chemistry
Choose all that apply 8 When a chemical equation is correctly balanced 81 0 all coefficients are in their lowest possible ratio each side of the equation has the same number of atoms of each element there must be a coefficient in front of each chemical formula
question 10 Which of the following is a correctly written chemical equation that demonstrates the conservation of mass Select one OH O H O O Mg HCI H MgCl OKCIO KC1 0 O H C H CO
Organic Chemistry
General organic chemistry
question 10 Which of the following is a correctly written chemical equation that demonstrates the conservation of mass Select one OH O H O O Mg HCI H MgCl OKCIO KC1 0 O H C H CO
culate the molar mass for each of the following 7 2 a MgCO3 magnesium carbonate used in antacids b Au OH 3 gold III hydroxide used in gold plating c C18H34O2 oleic acid from olive oil d C21H26O5 prednisone anti
Organic Chemistry
General organic chemistry
culate the molar mass for each of the following 7 2 a MgCO3 magnesium carbonate used in antacids b Au OH 3 gold III hydroxide used in gold plating c C18H34O2 oleic acid from olive oil d C21H26O5 prednisone anti
7 38 Balance each of the following chemical equations a Ca s Br2 1 CaBr2 s b P4 s O g P4O10 s c Sb S3 s HCl aq SbCl3 aq H S 9 d Fe O3 s C s Fe s CO g
Organic Chemistry
Chemistry in Daily Life
7 38 Balance each of the following chemical equations a Ca s Br2 1 CaBr2 s b P4 s O g P4O10 s c Sb S3 s HCl aq SbCl3 aq H S 9 d Fe O3 s C s Fe s CO g
Select one Dimensional Analysis 1 Unit Conversions Question 9 One way to represent an oxygen molecule is with a sketch like the one below The black arrow represents the average molecular speed at room temperature of 480 meters per second m s That unit of speed might be difficult to relate to You decide to convert it to miles per hour Which of the following choices shows how to convert this speed to miles per hour 18 O miles 480 1609m hr 1074 miles hr 480 1609 miles 1074 miles x hr 480 1609 3500 960 miles none of these conversions are correct OO oxygen gas 480 m s
Organic Chemistry
Isomerism
Select one Dimensional Analysis 1 Unit Conversions Question 9 One way to represent an oxygen molecule is with a sketch like the one below The black arrow represents the average molecular speed at room temperature of 480 meters per second m s That unit of speed might be difficult to relate to You decide to convert it to miles per hour Which of the following choices shows how to convert this speed to miles per hour 18 O miles 480 1609m hr 1074 miles hr 480 1609 miles 1074 miles x hr 480 1609 3500 960 miles none of these conversions are correct OO oxygen gas 480 m s
These equations represent the results of dissolving different substances in water Identify each substance as a strong electrolyte weak electrolyte or nonelectrolyte NH4 SO4 s 2NH4 aq SO4 aq CuSO4 s Cu aq SO4 aq HF g H O H3O aq F aq C3H6O C3H6O aq DONE
Organic Chemistry
Practical Detection
These equations represent the results of dissolving different substances in water Identify each substance as a strong electrolyte weak electrolyte or nonelectrolyte NH4 SO4 s 2NH4 aq SO4 aq CuSO4 s Cu aq SO4 aq HF g H O H3O aq F aq C3H6O C3H6O aq DONE
stions 9 and 10 refer to the following A sample of seawater is analyzed The table below gives the concentration of some ions in the sample Concentration of Some lons in a Seawater Sample Ion Concentration M CI Na Mg2 SO4 Ca K 0 545 0 468 0 054 0 028 0 010 0 010 Determine the number of moles of the SO42 ion shown in the table in a 1 400 liter sample of the seawater S 0 4
Organic Chemistry
General organic chemistry
stions 9 and 10 refer to the following A sample of seawater is analyzed The table below gives the concentration of some ions in the sample Concentration of Some lons in a Seawater Sample Ion Concentration M CI Na Mg2 SO4 Ca K 0 545 0 468 0 054 0 028 0 010 0 010 Determine the number of moles of the SO42 ion shown in the table in a 1 400 liter sample of the seawater S 0 4
Which one s of the following are examples of a chemical change 1 A copper roof developing a green patina over time 2 A match burning 3 Ethanol evaporating 4 Both A and B are examples of chemical changes 5 A B and C are all examples of chemical changes
Organic Chemistry
Practical Detection
Which one s of the following are examples of a chemical change 1 A copper roof developing a green patina over time 2 A match burning 3 Ethanol evaporating 4 Both A and B are examples of chemical changes 5 A B and C are all examples of chemical changes
Helium s boiling point is 4 222 K Calculate helium s boiling point in degrees Fahrenheit 1 467 3 F 2 167 2 F 3 452 1 F 4 452 1 F 5 467 3 F
Organic Chemistry
Practical Detection
Helium s boiling point is 4 222 K Calculate helium s boiling point in degrees Fahrenheit 1 467 3 F 2 167 2 F 3 452 1 F 4 452 1 F 5 467 3 F
a Select one De De Conservation of Mass Question 1 Which set of coefficients will balance this chemical equation De O O C2H4 g O2 g 1 2 1 3 O 2 5 O 2 3 O2 g 2CO2 g 2H O g
Organic Chemistry
General organic chemistry
a Select one De De Conservation of Mass Question 1 Which set of coefficients will balance this chemical equation De O O C2H4 g O2 g 1 2 1 3 O 2 5 O 2 3 O2 g 2CO2 g 2H O g
12 Calorimeters are used to measure bond energy by providing O A an open system where matter and heat can be exchanged with the surroundings O B A closed system where heat can be exchanged with the surroundings but not matter O C An isolated system where neither heat nor matter can be exchanged with the surroundings D A combined system where heat and matter can periodically be exchanged with the surroundings
Organic Chemistry
General organic chemistry
12 Calorimeters are used to measure bond energy by providing O A an open system where matter and heat can be exchanged with the surroundings O B A closed system where heat can be exchanged with the surroundings but not matter O C An isolated system where neither heat nor matter can be exchanged with the surroundings D A combined system where heat and matter can periodically be exchanged with the surroundings
Mechanisms Provide a complete stepwise mechanism to explain each of the following transformations Be certain to include ALL intermediate structures and electron shift arrows that clearly indicate the electron transitions and bond changes that convert one structure to the next a b Br HO OH H O EtOAc H SO4 H O at
Organic Chemistry
Alcohols and Phenols
Mechanisms Provide a complete stepwise mechanism to explain each of the following transformations Be certain to include ALL intermediate structures and electron shift arrows that clearly indicate the electron transitions and bond changes that convert one structure to the next a b Br HO OH H O EtOAc H SO4 H O at
Conservation of Mass Question 3 In a chemical reaction you begin with 18 atoms When the reaction is over you would expect to have atoms remaining Select one 8 O O There is not enough information to determine this more than 18 O 18 less than 18
Organic Chemistry
General organic chemistry
Conservation of Mass Question 3 In a chemical reaction you begin with 18 atoms When the reaction is over you would expect to have atoms remaining Select one 8 O O There is not enough information to determine this more than 18 O 18 less than 18
6 In 1828 Friedrich W hler produced urea when he heated a solution of ammonium cyanate This reaction is represented by the balanced equation below H XK H N H C N O N C N Ammonium cyanate Determine the gram formula mass of the product in the given equation Urea
Organic Chemistry
General organic chemistry
6 In 1828 Friedrich W hler produced urea when he heated a solution of ammonium cyanate This reaction is represented by the balanced equation below H XK H N H C N O N C N Ammonium cyanate Determine the gram formula mass of the product in the given equation Urea
A sloth is the slowest moving mammal and travels at a top speed of 0 15 mph If a sloth traveled for 37 minutes without stopping how many inches total will the sloth have moved total Use the following conversion factors to help guide you 3 ft 1 yd 60 min 1 hr 12 in 1 ft 1 mi 1760 1 158 4 in 2 0 0053 in 3 5860 8 in 4 1953 6 in 5 5 55 in
Organic Chemistry
Practical Detection
A sloth is the slowest moving mammal and travels at a top speed of 0 15 mph If a sloth traveled for 37 minutes without stopping how many inches total will the sloth have moved total Use the following conversion factors to help guide you 3 ft 1 yd 60 min 1 hr 12 in 1 ft 1 mi 1760 1 158 4 in 2 0 0053 in 3 5860 8 in 4 1953 6 in 5 5 55 in
In a cup there is orange juice containing pulp and a few ice cubes Which choice best describes the contents of the cup 1 element O2 compound 3 heterogeneous mixture 04 homogeneous mixture 5 pure substance
Organic Chemistry
General organic chemistry
In a cup there is orange juice containing pulp and a few ice cubes Which choice best describes the contents of the cup 1 element O2 compound 3 heterogeneous mixture 04 homogeneous mixture 5 pure substance
ch two atoms have the same number of neutrons 34 16 S 32S 35Cl 38 Ar S 16 17 18 34 32 a S and S 16 16 b C 34 16 38 S and A Ar 35 34 S and C 16 17 d 35 Cl and 38 18 Ar
Organic Chemistry
Practical Detection
ch two atoms have the same number of neutrons 34 16 S 32S 35Cl 38 Ar S 16 17 18 34 32 a S and S 16 16 b C 34 16 38 S and A Ar 35 34 S and C 16 17 d 35 Cl and 38 18 Ar
The density of mercury is 13 534 g mL What volume in L does 680 g occupy 1 50 L 2 0 050 L 3 9203 L 4 0 02 L 5 0 0002 L
Organic Chemistry
Practical Detection
The density of mercury is 13 534 g mL What volume in L does 680 g occupy 1 50 L 2 0 050 L 3 9203 L 4 0 02 L 5 0 0002 L
Select the correct sequence of events in the scientific method 1 thesis observation experiment theory scientific law 2 theory observation scientific law 3 observation hypothesis experiment theory scientific law 4 hypothesis experiment theory scientific law 5 observation hypothesis experiment theory
Organic Chemistry
Practical Detection
Select the correct sequence of events in the scientific method 1 thesis observation experiment theory scientific law 2 theory observation scientific law 3 observation hypothesis experiment theory scientific law 4 hypothesis experiment theory scientific law 5 observation hypothesis experiment theory
Select one What should the coefficient for the aluminum Al be when this equation is correctly balanced a O 1 1 02 4 AIC13 O 3
Organic Chemistry
General organic chemistry
Select one What should the coefficient for the aluminum Al be when this equation is correctly balanced a O 1 1 02 4 AIC13 O 3
A pure substance composed of two or more different elements is 1 an ion 2 a homogeneous mixture O 3 a chemical compound 4 a solid O 5 5 an atom
Organic Chemistry
Practical Detection
A pure substance composed of two or more different elements is 1 an ion 2 a homogeneous mixture O 3 a chemical compound 4 a solid O 5 5 an atom