Chemistry
Chemical reactions, stoichiometry, molecular structures, and element properties.
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write formulas of the given monatomic ions. you must include the positi…
lithium ion: $Li^{+}$ nitride: $N^{3 - }$ strontium ion: $Sr^{2+}$ iodide: $I^{-}$ zinc ion: $Zn^{2+}$ silver ion: $Ag^{+}$ cadmium ion: $Cd^{2+}$ calcium ion: $Ca^{2+}$ bromide: …
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3 - d assessment: chemical bonding (lms graded) these three figures sho…
F
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exit ticket: covalent naming/formulas which of the following formulas i…
P₄S
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the atom and atomic theory test study guide 1) explain in detail the ac…
16. $\approx3.075\times10^{14}\text{Hz}$ 17. $\approx0.356\text{m}$ 18. $\approx5.99584\times10^{14}\text{Hz}$ 19. $\approx6.99\times10^{-6}\text{m}$
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exit ticket: covalent naming/formulas which of the following is the cor…
D. Diphosphorus pentoxide
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chemistry i experimental design hw name: shaudee benner hr. 3rd indepen…
Independent Variable: Amount of salt added to 100mL of water (0g, 5g, 10g) Dependent Variable(s): Time to boil, Boiling temperature of water Constants: Volume of water (100mL), he…
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chemistry i st sci8itis1 9 chemistry i si (lms) 3 - d assessment: chemi…
It depends on the details of Figure B. If both sides in the tug - of - war in Figure B have equal strength and the rope is not pulled more towards one side, then the statement is …
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these three figures show that in a game of tug - of - war, the knot in …
It depends on what Figure B shows. If it shows a balanced tug - of - war with equal pull from both sides, the statement is correct; otherwise, it is incorrect.
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covalent naming/formulas c₈s₆ is the correct formula for octacarbon hex…
True
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covalent naming/formulas electrons are within covalent compounds. trans…
shared
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which of the following statements is true? choose 1 answer: a magnesium…
C. Magnesium has an atomic mass of 24.31 amu and manganese has an atomic mass of 54.94 amu.
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covalent naming/formulas a covalent bond is usually formed between meta…
two nonmetals
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which of the following atoms would have approximately half the mass of …
B. Ruthenium (atomic number 44)
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these three figures show that in a game of tug - of - war, the knot in …
The figure where the players on both sides appear to be of equal strength and the knot in the rope is in the middle best represents two bonded atoms with electronegativity differe…
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which of the following elements likely has similar properties to chlori…
C. Iodine (atomic number 53)
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chemistry i s1: sci6111s1 9 chemistry i s1 (lms) 3 - d assessment: chem…
A. The resulting sodium cation has a stable octet in its valence shell. B. The resulting chlorine anion has a stable octet in its valence shell. E. The electrostatic attraction be…
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chemistry i st: sci6111s1 9 chemistry i s1 (lms) 3 - d assessment: chem…
A sodium atom has 1 valence electron(s). A chlorine atom has 7 valence electron(s).
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chemistry i si scibi1ms1 9 chemistry i si (lms) 3 - d assessment: chemi…
B. The compounds in which bromine bonds with a metal have higher melting points than the compounds in which bromine bonds with a nonmetal. D. The compound with the lowest melting …
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chemistry i si: sci8ti1s1 9 chemistry i si (lms) 3 - d assessment: chem…
B. The compounds in which bromine bonds with a metal have higher melting points than the compounds in which bromine bonds with a nonmetal; C. The compound with the highest melting…
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the symbol for cadmium is cd, and it’s found in group 12 on the periodi…
B. 112.41
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use naming rules to explain why the following statement is not correct.…
The correct name should be lead(IV) chloride because lead is a transition - metal and its oxidation state (+4 in this case) must be indicated with Roman numerals in the compound's…
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periodic table which of the molecules has the highest boiling point? en…
4
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chemistry i si sci8tis1 9 chemistry i si (lms) 3 - d assessment: chemic…
Beaker IV, Beaker III, Beaker II, Beaker I
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chemistry i sci101ms1 9 chemistry i si (lms) 3 - d assessment: chemical…
Correct Lewis Structures for Carbon Dioxide: I, III Incorrect Lewis Structures for Carbon Dioxide: II, IV
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7 which best describes the transformation of energy of a rollercoaster?…
The potential energy of the rollercoaster is converted into kinetic energy when it is moving.
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periodic table which of the following statements about covalent bonds a…
B. Covalent bonds hold the atoms together in discrete molecules. C. Covalent bonds form when atoms of nonmetals are close enough to each other for their orbitals to overlap. D. Co…
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a team of scientists have synthesized a new element. theyd like to name…
A. Fg
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a team of scientists have synthesized a new element. theyd like to name…
A. Fg
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periodic table which of the following statements about metals are true?…
A. Metals can be drawn into wires C. Metals can be hammered into different shapes D. Metals in solid form have specific crystal structures F. The sea of electrons holds metal anio…
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periodic table which of the following lewis structures correctly repres…
A. :Cl:⁻ Ca²⁺ :Cl:⁻
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periodic table. fill in the blanks to complete the sentences. the octet…
valence
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get it? classify which techniques for separating mixtures depend on pha…
Techniques like distillation and evaporation - condensation depend on phase changes. Distillation uses liquid - to - gas (vaporization) and gas - to - liquid (condensation) change…
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periodic table fill in the blanks to complete the sentences the octet r…
First blank: electrons; Second blank: outermost
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8. describe btb. 9. name three conditions where changes in proton conce…
BTB is a pH - indicator. Three conditions are acidic, neutral, and basic. Table filled as above.
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part c matching match each description in column b to the correct term …
15. d. measure of the space occupied by an object 16. i. the amount of matter that an object contains 17. c. matter that has a uniform and definite composition 18. a. a quality or…
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get it? compare and contrast the mobile phase with the stationary phase…
The mobile phase moves and carries the sample, while the stationary phase is fixed and interacts with the sample for separation.
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6. explain why measurement is essential in chemistry.
Measurement is essential in chemistry for accurate determination of substances' amounts, reaction - conditions, and material properties, which aids in equation - formulation, stoi…
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4 mixtures of matter (continued) get it? predict the result of trying t…
The spices will be retained on the filter paper while the oil and vinegar will pass through the filter paper.
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drag the correct answer to the box. which counter - claim would help ba…
Herbicides quickly kill weed roots while preserving grass, making them efficient and easy gardening tools.
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name: match the letter with the color answer a. atomic # 17, used to ki…
A. Chlorine Green B. Bromide Brown C. Carbon Red D. Helium Brown E. Nitrogen Blue F. Sodium Blue G. Hydrogen Blue H. Mercury Brown J. Aluminum Brown N. Calcium Yellow O. Magnesium…
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people properties of matter class activity per: 1 date ____ chemistry a…
for Part B: 11. AT; Matter is defined as anything that has mass and occupies space. 12. NT; Liquids take the shape of their container and do not have a definite shape on their own…
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question 5 1 pts which option correctly matches the characteristics of …
B. Ionic bonds occur between metals and non - metals; atoms gain or lose electrons. Covalent bonds occur between non - metals; atoms share electrons.
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graphing periodic properties the periodic table relies on patterns and …
1. There is no simple linear relationship between atomic numbers and melting points. Trends vary among different groups. For some groups, melting - point may increase with atomic …
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when we draw pictures of molecules we often use a single solid line to …
C. N≡N
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covalent bonding is typically explained as a bond that forms when atoms…
Atoms are both trying to attract the same electrons, causing a situation where both atoms are pulled together.
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in order to build an ionic compound that sticks together you need atoms…
1. Opposite charges 2. Ionic bonds form between metals and nonmetals because metals form positive ions and non - metals form negative ions.
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identify five techniques that take advantage of different physical prop…
Technique 1: Filtration How it is done: Use a filter paper. Liquid passes through, solid is retained. Technique 2: Evaporation How it is done: Heat the mixture, liquid evaporates,…
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12. oxygen reacts with iron to produce rust and with hydrogen to produc…
A. New molecules are formed but the same elements are found
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11. a scientist studies the following chemical equation for the product…
mass of oxygen decreases
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sodium sulfate and barium chloride react with each other to form sodium…
The mass of the reactants is the same as the mass of the products.
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in the late 1700s, antoine lavoisier performed a series of experiments …
B. conservation of mass
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q 8. the equation below shows a chemical reaction. according to the law…
$7.32$ grams
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q7. the table below shows the data collected on four substances that we…
Substance 1
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q: a solution with a ph of 2 can be increased to a ph above 7 by adding…
a base
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1. **carbon dioxide has a formula of co₂. use this knowledge to represe…
# Explanation: ## Step1: Understand carbon - dioxide phase changes Carbon dioxide can undergo sublimation (solid to gas) without passing through the liquid phase under normal atmo…
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5. if an aqueous solution has a slippery feel, which type of solution w…
a basic solution
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a type of juice has a sour taste and turns a piece of litmus paper red.…
Acidic
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unsweetened chocolate has a very bitter taste. what does this taste ind…
They are basic
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what is one of the characteristics of an acidic compound? sour taste un…
sour taste
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1. calcium carbonate is used to treat acid reflux, which is sometimes c…
Calcium carbonate neutralizes acid in the stomach.
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q1 calcium carbonate is used to treat acid reflux, which is sometimes c…
It reacts with hydrochloric acid in the stomach to form calcium chloride, water, and carbon - dioxide gas.
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section 3: predicting the products of chemical reactions predict the pr…
1. No reaction, No reaction 2. No reaction, No reaction 3. 2H₂O, Synthesis reaction 4. Mn(NO₃)₂ + 2H₂O, Acid - base (neutralization) reaction 5. No reaction, No reaction 6. Cu(CN)…
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9) brass is an alloy of copper (cu) and zinc (zn). if 8.32 g of copper …
A. $1.10\times 10^{23}$ metal atoms
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4 mixtures of matter (continued) get it? summarize the different types …
Matter includes pure substances (elements and compounds) and mixtures. Elements are the simplest, compounds are formed from elements chemically, and mixtures are physical combinat…
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question 3. complete the table for the following elements. element: chl…
| Element | Atomic Number | Mass Number | Number of Protons | Number of Electrons | Number of Neutrons | |---|---|---|---|---|---| | Chlorine | 17 | 35 | 17 | 17 | 18 | | Potassiu…
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question 2. consider the nuclear notation below. 23 11 na what is the n…
11 protons, 12 neutrons, 11 electrons
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question 1. which of the following statements are true about an atom wi…
It has 15 protons. It has 15 electrons if it is neutral. It has 16 neutrons.
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26. graph create a graph that illustrates the law of multiple proportio…
The graph will have the mass of one element on the x - axis and the mass of the other element that combines with it on the y - axis. Data points for different compounds formed by …
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1. physical change: 2. distillation: 3. chemical property: 4. chemical …
1. A mixture is a combination of substances not chemically combined, e.g., sand - water, salad. A solution is a homogeneous mixture with solute dissolved in solvent, e.g., salt - …
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3 elements and compounds (continued) discuss elements and compounds by …
There are more than 90 naturally occurring elements. Seventy - five percent of the universe is hydrogen. The Earth's crust and the human body are made of different elements. But o…
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item 30: acid base titration curve analysis titration of 0.100 mol/l h₂…
1. a. The sample is $0.100\ mol/L\ H_{2}SO_{3(aq)}$. b. The titrant is $0.750\ mol/L\ NaOH_{(aq)}$. 2. a. Region A is a buffer region. b. Other buffer - like zones are regions wit…
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part 3 - moon facts: scroll through the page and look for the following…
1. The Moon is moving further away from Earth. It moves approximately 3.8 centimeters per year. 2. We always see the same side of the Moon because the Moon's rotation period (the …
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question 21 (1 point) how does alcohol affect the brain a developmental…
Question 21: c. All of the above Question 22: a. All of the above Question 23: a. Releases toxic chemicals, b. Increased stomach acid Question 24: b. 0.08%
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which of these is an example of a physical change? - a banana ripening …
Liquid water turning into vapor
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2. describe the property of water that is indicated by the data. how is…
One property of water could be high specific - heat capacity. The data might show a slow increase in temperature over time when heat is applied, indicating that water can absorb a…
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which element would most likely lose electrons to form positive ions wh…
rubidium (Rb)
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a. organization of the periodic table 1. why do elements in the same gr…
1. They have the same number of valence electrons. 2. Metals, Non - Metals, Metalloids 3. Good conductors of heat, good conductors of electricity, malleable, ductile, shiny luster…
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how does an atom change if all of its electrons are removed? the atoms …
The atom becomes positively charged.
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analyzing data patterns in electron configurations as described by the …
| Atomic number | Element | 1s | 2s | $2p_{x}$ | $2p_{y}$ | $2p_{z}$ | 3s | Electron configuration | |---|---|---|---|---|---|---|---|---| | 1 | H | $\uparrow$ | | | | | | $1s^{1}…
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you do: 1) consider the image provided what state of matter is represen…
1. c) Gas; d) Condensation 2. b) Melting
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question 16 (multiple choice worth 5 points) (82 0611 mc) which of the …
D. Na has a larger radius than Na⁺, because Na⁺ has lost its outermost energy shell.
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question 10 multiple choice worth 5 points (02 02r lc) is a nonmetal in…
C. Sulfur
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the table shows the charge on three unknown subatomic particles. charge…
B. Only particle Z
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13) a 500.0 ml acid solution is 0.100 mol l⁻¹ in hcl and 0.400 mol l⁻¹ …
C. 1.67 L
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sulfur (s) has an atomic number of 16. what is the ground - state elect…
1s²2s²2p⁶3s²3p⁴
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which locations are likely to have subatomic particles with the least m…
1 and 4
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which of the following groups of elements are likely to have substances…
D. Group 14
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what is the general trend for electron affinity values going across a p…
The values become more negative.
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excerpt from society and solitude by ralph waldo emerson the necessity …
Every individual has private motivations.
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a neutral oxygen atom has ______ electrons. 7 8 9 10
B. 8
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12) calculate the $delta_fh^{circ}$ for $so_3(g)$, given the following …
B. $-396\ kJ\ mol^{-1}$
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match the vocabulary word to its definition: 1. subatomic particles 2. …
For the isotope table: see above - filled table. For question 7: The atom is carbon. Explanation: The number of protons in the nucleus is 6, and the atomic number of carbon is 6, …
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6. what is meant by half - life? give an example of how half - life is …
6. The half - life is the time required for half of the atoms of a radioactive substance to decay. Example: Carbon - dating uses the 5730 - year half - life of carbon - 14 to dete…
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complete the following as best as you can based on your prior knowledge…
1. - Liquid to Gas: - Name: Vaporization - Energy is: Absorbed - Example: Water boiling to steam - Liquid to Solid: - Name: Freezing - Energy is: Released - Example: Water turning…
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match the terms review. 1. cohesion a. tendency to stick to other subst…
1. e. tendency to stick to other water molecules 2. g. tendency to climb up due to cohesion and adhesion properties of water 3. a. tendency to stick to other substances 4. f. unev…
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1 what is chemistry? (continued) 7. identify three models that scientis…
- Physical models: Visualize structure. - Mathematical models: Predict behavior. - Conceptual models: Explain phenomena. ### 8.
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1 which property shows an increasing trend in the elements, from group …
1. A. ability to form anions 2. D. The attraction between the positive ions and the 'sea of electrons' is stronger in lithium than in sodium. 3. A. 1, 2 and 3 4. D. Y and Z
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recall from yesterday that there are 4 subblocks (s, p, d, and f) that …
2. 1s²2s²2p⁴ 3. 1s²2s²2p⁶3s² 4. 1s²2s²2p⁶3s²3p⁵ 5. 1s²2s²2p⁶3s²3p⁶4s² 6. 1s²2s²2p⁶3s²3p⁶4s²3d⁶
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on virtue mending wall by robert frost something there is that doesnt l…
# Breve explicación: "On Virtue" de Wheatley utiliza un lenguaje más formal y poético con metáforas como "O thou bright jewel in my aim I strive", mientras que "Mending Wall" de F…
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on virtue by phillis wheatley o thou bright jewel in my aim i strive to…
"On Virtue" uses metaphor, while "Mending Wall" does not.