Química
Reacciones químicas, estequiometría, estructuras moleculares y propiedades.
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5 - using powerpoint and other presentation software learning objective…
A. A conference on trends in marketing
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formation of soil horizons soil forms as rock is broken down by and mix…
1. Weathering 2. Incorporation 3. Soil 4. Temperature 5. Precipitation 6. Mineral 7. Grain size
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greg finished his chemistry assignment in $\\frac{1}{3}$ hours. then he…
\(\frac{23}{24}\)
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sage means : aromatic fresh or dried gray - green leaves used as season…
aromatic fresh or dried gray - green leaves used as seasoning
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all about water worksheet part a-fill in the blanks word bank ▲ h2o ● p…
1. inorganic, hydrogen, oxygen, carbon 2. \(H_2O\) 3. covalent 4. polar 5. negative, positive 6. polarity, hydrogen
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ceecee and her mother prefer to take baths, whereas her father and brot…
C. schemas
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part b c4h10(g) + o2(g) → express your answer as a complete chemical eq…
\(2C_4H_{10}(g)+13O_2(g)\to8CO_2(g)+10H_2O(l)\)
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assess it! part 2 use the vocabulary words from ead it\ to complete the…
4. matter 5. atom 6. mixture 7. elements 8. compound
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kcw writing and balancing chemical equations me balancing chemical equa…
\(2C_{4}H_{10}(g)+13O_{2}(g) ightarrow8CO_{2}(g)+10H_{2}O(l)\)
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missed this? watch kcv: writing and balancing chemical equations iwe: b…
\(C(s)+O_2(g)\to CO_2(g)\)
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the partial pressure of a gas depends on the volume of the gas in a str…
volume of the gas in a structure
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put the words in the right order to describe the noun. experiment chemi…
the successful chemistry experiment
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warm up: what is the molar mass of kcl?
$74.55\ g/mol$
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what is the molar mass of h_{3}po_{4}?
\(97.994\space g/mol\)
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what is the wavelength, in nanometers, of light with an energy content …
247
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quantum numbers write the four quantum numbers (n,l,m,m) for each circl…
Electron A: \((2,0,0,-\frac{1}{2})\) Electron B: \((2,1,-1,-\frac{1}{2})\) Electron C: \((4,0,0,+\frac{1}{2})\) Electron D: \((3,2,+2,-\frac{1}{2})\) Electron E: \((4,1,-1,-\frac{…
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explain what a compound is and how you can tell one by looking at a che…
A compound is a substance made of two or more elements chemically combined. In a chemical formula, different element symbols (e.g., \(H_2O\) has \(H\) and \(O\)) show it's a compo…
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read the incomplete quatrain. the snowy hill calls to the sleeping chil…
Awake, sweet child! It’s time to come outside!
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read the incomplete quatrain. no one knows the dreams within my mind th…
My mind's a window with the curtains drawn
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read the incomplete quatrain. the train recedes; a lonely whistle blows…
And both the train and I emit a sigh
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unit 5 - challenge 5.2: creating effective presentations 3 - the dos an…
d. address and further your key point
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example 4 what is the total molar concentration of ions in a 0.350 m so…
$1.05\ M$
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important process with practical uses. for example, it can be used to m…
precipitate
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a sweetened iced tea beverage contains 43.0 g of sucrose (c₁₂h₂₂o₁₁) in…
\(0.355\space mol/L\)
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calculate the number of moles nacl in 1.69 x 10^{25} formula units nacl.
\(28.1\text{ mol}\)
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scarce, so mahdjoubi came up with an idea for reusing the flow. \id hi …
- "And because the reused water is already warm, it takes minimal energy to heat it back to the target temperature." (paragraph 12) - "The company has sold several thousand units,…
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2. an atom contains 20 protons, 20 neutrons, and 20 electrons. this ele…
- Question 2: B. \(2\) - Question 4: D. \(4\) - Question 6: C. \(O, S, Se\) - Question 8: B. \(As\)
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part 4: answer the following multiple choice questions. 1. the elements…
1. B. atomic number 3. C. 3 5. D. rubidium 7. A. gold
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5) what is the molar concentration of sodium ions in a 0.750 m na3po4 s…
D. \(2.25\ M\)
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3) what is the concentration of 1000. ml of 2.50 m kbr? a) 5.00 m b) 1.…
D. 2.50 M
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10. apply math models in a chemical compound, there are 3 parts zinc fo…
The amount of zinc in the chemical compound is \(60\) grams.
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2) what is the concentration of hcl in the final solution when 65 ml of…
C. \(2.6\space M\)
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name: 9. explain the differences between a suspension, a solution, and …
A suspension is a heterogeneous mixture with large - settling particles. A solution is a homogeneous mixture with molecular/ionic - level dispersion. A mixture is a general combin…
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label the models (dalton, thomson, rutherford, bohr, or quantum mechani…
1. Thomson 2. Bohr 3. Dalton 4. Rutherford 5. Quantum Mechanical model
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label the models (dalton, thomson, rutherford, bohr, or quantum mechani…
Top - left: Thomson; Top - right: Dalton; Middle - left: Quantum Mechanical; Middle - right: Rutherford; Bottom - right: Bohr.
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explain how a plant can cause a rock to weather
Plants cause rock weathering through physical (root - pressure) and chemical (acid - mineral reaction) processes.
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c. make a list of 6 forces that can weather a rock physically or chemic…
1. Water (physical - freeze - thaw), 2. Wind (physical - abrasion), 3. Temperature changes (physical - expansion/contraction), 4. Plants (physical - root growth), 5. Animals (phys…
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which pair of elements has the same valence electronic configuration of…
B. Ge and Pb
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what is the maximum number of electrons that can have the quantum numbe…
\(2\)
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of the following, which sublevel is filled last? answer: a 3d b 4s c 4p…
D. \(4d\)
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the ground state electron configuration of a neutral k atom is answer: …
E. \(1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{1}\)
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what is the correct name for the molecule in the image? n₂s₄ nitrogen t…
Dinitrogen tetrasulfide
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how many electrons can be assigned to orbitals designated by the quantu…
\( 6 \)
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what is the correct name for the molecule so? monosulfur monoxide sulfu…
Sulfur monoxide
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what is the correct name for the molecule hbr? hydrogen monobromide mon…
Hydrogen bromide
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which pair of elements is most likely to form a molecule? sulfur and br…
Sulfur and bromine
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question 8 (1 point) saved listen what is the possible reason for a yie…
The collected copper was not completely dry in the oven. # Question 9
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which of the lewis structures in the image is correct?
C.
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question 8 (1 point) what is the possible reason for a yield percent gr…
The collected copper was not completely dry in the oven.
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question 7 (1 point) at the end of the experiment, your sample will nee…
Discard the aluminum in the appropriate solid waste container, which is separate from the liquid waste.
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the reaction of iron ore with carbon follows the equation: 2fe2o3 + 3c …
80%
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given 5.0 moles of koh and 2.0 moles of h₃po₄, how many moles of k₃po₄ …
1.7 moles
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question 4 (1 point) for the reaction 3 h₂ (g) + n₂ (g) → 2 nh₃ (g), 3 …
34 g
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solid copper is formed as a result of an oxidation - reduction reaction…
A transfer of electrons between two reacting species.
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question 1 (1 point) which of the following is not an example of system…
Recording measurements for multiple reaction trials with the exact same time length for each reaction trial.
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electron configuration practice worksheet in the space below, write the…
1. \(1s^{2}2s^{2}2p^{6}3s^{1}\) 2. \(1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{6}\) 3. \(1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^{5}\) 4. \(1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2…
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in this performance task, you will answer 4 questions. the united natio…
have seven shells of electrons
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review the lab report conclusion and then answer the question. based on…
to record an experiment and demonstrate learning
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missed this? watch kcv limiting reactant, theoretical yield, and percen…
\(Mg\)
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which statement primarily appeals to ethos to support the position that…
Having worked as a high - school chemistry teacher for more than fifteen years, I have seen the positive influence that elective courses have had on my students.
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which statement primarily appeals to pathos, or emotion, to support the…
"I grew up in a farming family, and I learned that the best way to preserve your land's soil and water is to farm organically."
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question 5 (1 point) how many carbon atoms are in 3 - methyl - 4,4 - di…
C. 18
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metals are used in many products because of the characteristic properti…
mirrors
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read the passage and use the diagram to answer the next two questions. …
Cl, O, Ar
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use the text to compare and contrast white chocolate and dark chocolate…
- Contains cocoa powder: White chocolate - no, Dark chocolate - yes. - Semi - sweet, bitter flavor: White chocolate - no, Dark chocolate - yes. - Offers health benefits: White cho…
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question 1 (1 point) which of these is an unsaturated hydrocarbon? a) c…
B. \(C_5H_{10}\)
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question 9 (1 point) organic compounds contain very few elements, where…
e) Germanium
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water can form drops on a surface, like on a leaf. drops form because w…
Hydrogen bonds between water molecules are cohesive forces. Cohesion describes interactions between molecules of the same kind.
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polar water molecules form hydrogen bonds with each other. in liquid wa…
A slightly positive hydrogen atom in a water molecule forms a hydrogen bond with a slightly negative oxygen atom in another water molecule.
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nitrogen dioxide is a gas commonly found in polluted air. it is produce…
| Chemical element | Number of atoms in the reaction | |--|--| | N | 12 | | O | 24 | Number of \(NO_2\) molecules: 12
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ms. jameson is using \sonnet 18\ by william shakespeare to teach her st…
aa
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a single electron in an orbital has quantum numbers ( n = 2, l = 0, m_l…
B. \(n = 2,\ l = 0,\ m_l = 0,\ m_s=-\frac{1}{2}\)
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which of the following electronic transitions represents an increase in…
A. \(4s ightarrow3d\)
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what element is designated by the orbital diagram below? answer: a n b …
A. N
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balance the chemical equation by selecting the appropriate coefficient …
\(4FeS(s)+7O_2(g)\to2Fe_2O_3(s)+4SO_2(g)\) So the coefficients are: \(FeS = 4\), \(O_2=7\), \(Fe_2O_3 = 2\), \(SO_2=4\)
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balance the chemical equation by selecting the appropriate coefficient …
ZnS: 2, O₂: 3, ZnO: 2, SO₂: 2
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j. n₂h₄(g) + n₂o₄(g) → n₂(g) + h₂o(g) 1. 1 2. 2 3. 3 4. 4 5. 5 6. 6 7. …
The coefficients are \(2\) for \(N_{2}H_{4}\), \(1\) for \(N_{2}O_{4}\), \(3\) for \(N_{2}\), and \(4\) for \(H_{2}O\)
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balance the chemical equation by selecting the appropriate coefficient …
\(Al_2(SO_4)_3\): \(1\), \(BaCl_2\): \(3\), \(BaSO_4\): \(3\), \(AlCl_3\): \(2\)
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balance the chemical equation by selecting the appropriate coefficient …
\(2\) \(Al\), \(2\) \(H_3PO_4\), \(2\) \(AlPO_4\), \(3\) \(H_2\)
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balance the chemical equation by selecting the appropriate coefficient …
The balanced chemical equation is \(2Fe(s)+6HCl(aq)\to2FeCl_3(aq)+3H_2(g)\). So the coefficients are \(Fe = 2\), \(HCl=6\), \(FeCl_3 = 2\), \(H_2=3\)
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what is the correct name for the molecule in the image? n₂s₄ dinitrogen…
Dinitrogen tetrasulfide
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what is the correct name for the molecule hbr? hydrogen bromide hydroge…
Hydrogen bromide
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balance the chemical equation by selecting the appropriate coefficient …
\(2C_2H_6(g)+7O_2(g)\to4CO_2(g)+6H_2O(g)\) So the coefficients are \(2\) (\(C_2H_6\)), \(7\) (\(O_2\)), \(4\) (\(CO_2\)), \(6\) (\(H_2O\))
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which of the lewis structures in the image is correct?
D.
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balance the chemical equation by selecting the appropriate coefficient …
\(2Sb(s)+3Cl_2(g)\to2SbCl_3(s)\)
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6 what is the main idea of the text? a scientists have a very difficult…
D. Man - made satellites are machines that come in all shapes and sizes for different purposes, including collecting data and images about Earth and space, and creating better com…
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how many electrons are represented by a single dash between two nonmeta…
Two are represented.
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which pair of elements is most likely to form a molecule? calcium and o…
Sulfur and bromine
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what is the correct name for the molecule so? sulfur monoxygen sulfur m…
Sulfur monoxide
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three containers each hold the same substance but in different states: …
C. The gas container
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a teacher sprays air freshener in one corner of the classroom. within a…
B. Gas particles move rapidly and spread out to fill the entire space.
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what is a molecule? all of these a compound formed when atoms share ele…
ALL of these
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2 how does the passage compare satellites to instruments like telescope…
B. Satellites see larger areas of Earth at one time and can see into space better than telescopes.
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give the chemical symbol for the element with the ground - state electr…
For \(3p\): - \(n = 3\) - \(\ell=1\) - The possible values of \(m_{\ell}\) for the \(3p\) subshell are \(-1,0,+1\)
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what is a covalent bond? when a metal and a nonmetal share electrons to…
When two nonmetals share electrons to achieve a full valence shell.
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give the chemical symbol for the element with the ground - state electr…
For \(3s\): - \(n = 3\) - \(\ell=0\) - \(m_{\ell}=0\)
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select the correct answer. iron (fe) reacts with copper sulfate (cuso₄)…
C. Cu undergoes reduction
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select the correct answer. what type of reaction is depicted by this eq…
C. combination
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select the correct answer. when magnesium combines with sulfur to form …
B. It involves loss of electrons.
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select the correct answer. aluminum can react with oxygen gas to produc…
B. synthesis