Chemistry
Chemical reactions, stoichiometry, molecular structures, and element properties.
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question #12 sodium chloride 1. white to colorless crystals 2. reacts w…
A. Observations 1, 3, and 4 only
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exit ticket 4.2 - world wars: wwi technology & the battlefront source: …
3) increased military casualties in battles fought during the war ### Question 2
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12. question 8 points what is the recommended initial treatment for a c…
B. Rinse the eye under lukewarm water for at least 20 minutes.
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using the periodic table and your knowledge of periodic trends, answer …
Bi ### Question 1b: Largest Electronegativity
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read the poem skimming the bottom in the company of toes, i observe the…
abcb
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read this excerpt from sea fever by john masefield. and the wheels kick…
The fixed meter and predictable rhyme scheme create an upbeat rhythm.
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trends in the periodic table worksheet use your knowledge of the period…
1. Fluorine has a smaller atomic radius than iodine (same group, F is above I). Smaller radius means electrons are closer to the nucleus, so more energy is needed to remove an ele…
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complete the rhyme scheme. a a b b c d halted against the shade of a la…
A (for "hill"), B (for "ease"), B (for "knees"), C (for "still"), D (for "ridge"), D (for "world")
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complete the rhyme scheme. c b b c a \who planted this old apple tree?\…
C, B, B, C, A
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ap chemistry name: shyja shant id: w076 chemistry u3l13 02 ct module da…
1. A. Cl 2. A. Cs 3. A. Cs 4. D. Atomic radius 5. B. Al
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pd: ______ chemistry u3l14_q2 ct module day 3 hw ** 18. | element | n |…
18. C 19. C 20. C 21. A 22. D
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the mass spectrum of element x is presented in the diagram above. based…
None of the options are correct based on the provided spectrum. However, if forced to choose from the given options, there is no valid answer. But assuming a possible misalignment…
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name: ______________ pd: ____ chemistry u3l14_q3 ct module day 3 hw ** …
14. B. Protons:55, Neutrons:79, Electrons:55 15. C. $K^+$, D. $Cl^-$
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name: _______________ pd: ______ chemistry u3l14_q2 ct module day 3 hw …
9. B. $1s^22s^22p^6$ 10. D. $1s^2 2s^22p^6 3s^1$ 11. A. 0 12. D. $1s^22s^22p^63s^13p^1$ 13. C. (1s: ↑↓, 2s: ↑↓, 2p: ↑↓, ↑, ↑)
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name: _______________ pd: ______ chemistry u3l14_q2 ct module day 3 hw …
4. C) an increase in the average distance of the outermost electrons from the nucleus 5. C) The atomic radius of F is smaller than that of O because F has a greater effective nucl…
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name: ______ pd: ______ chemistry u3l14 q2 ct module day 5 note: annota…
(B) Sr²⁺
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which of the following are part of kinetic-molecular theory? check all …
- The particles in a liquid are moving past one another constantly. - The particles in gas move freely in all directions. - The particles in a solid vibrate in a fixed position. -…
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read the excerpts from samuel johnson’s preface to a dictionary of the …
strives to emphasize the effort his dictionary required.
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question 37 of 40 write the empirical formula corresponding to b₃n₃h₆
\(BNH_2\)
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write the empirical formula corresponding to $\\ce{c6h4cl2}$
\(C_3H_2Cl\)
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determine the mass in grams that are in 1 molecule of i₂?
\(4.214\times 10^{-22}\space g\)
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which one of the following contains the most moles of hydrogen atoms? a…
B. \(10\space mol\space CH_3OH\)
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4. match the name of the reaction to the equation. 4c₅h₉o + 27o₂ → 20co…
Combustion Reaction (matches the equation \(4\text{C}_5\text{H}_9\text{O} + 27\text{O}_2 ightarrow 20\text{CO}_2 + 18\text{H}_2\text{O}\) as it is a reaction of an organic compoun…
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3. choose the best answer. which conversion factor in the train track s…
$\frac{0.029\ \text{L}}{1\ \text{oz}}$ (the second option, $\boldsymbol{\frac{0.029\ \text{L}}{1\ \text{oz}}}$)
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25. choose the best answer. ammonium nitrate, nh₄no₃, is a popular fert…
D. \(N_2(g) + O_2(g) + H_2O(g)\) (assuming the options are labeled A, B, C, D in order, with the last option being D)
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21. match the name of the reaction to the equation. $2\\ce{na_{2}o} \ i…
(Question 22): A. acid-base (the option with "acid-base") For Question 21, the reaction \( 2\text{Na}_2\text{O} ightarrow 4\text{Na} + \text{O}_2 \) is a decomposition reaction (a…
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18. match the name of the reaction to the equation. 4c₅h₉o + 27o₂ → 20c…
The reaction is a **Combustion Reaction** (matches the equation as it is the burning of \( C_5H_9O \) in \( O_2 \) to form \( CO_2 \) and \( H_2O \)). ### Question 19 (Choose best…
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16. choose the best answer. which chemical equation demonstrates the la…
\(4\ce{NH3} + 5\ce{O2} \to 4\ce{NO} + 6\ce{H2O}\) (the fourth option) ### Question 17
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14. choose the best answer. ______ reactions involve the transfer of el…
A. Redox ### Question 15
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12. choose the best answer. when a(n) ______ agent oxidizes, it causes …
B. reducing ### Question 13
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10. choose the best answer. _____ is the process in which an atom or io…
C. Oxidation ### Question 11
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determine the molar mass of $\\ce{cr3(po4)2}$. provide an answer to two…
\(345.93\space g/mol\)
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an iron - containing compound is 20.1% fe, 11.5% s, 63.3% o, and 5.1% h…
D. \(FeSO_{11}H_{14}\)
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7. match the name of the reaction to the equation. $2nh_3 + h_2so_4 \ i…
The reaction is an acid - base neutralization (or synthesis) reaction. If we consider the common naming, it can be called a "synthesis (combination)" reaction or "neutralization" …
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what is the empirical formula of a compound that contains only iron and…
\(FeO\)
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5. choose the best answer. bubbles are formed to indicate this type of …
B. gas ### Question 6
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3. choose the best answer. which type of reaction is this? co₂(g) + h₂(…
A. redox ### Question 4
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1. choose the best answer. when a(n) ____ agent reduces, it causes oxid…
B. oxidizing ### Question 2
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19. choose the best answer. _____ reactions involve the formation of an…
B. Precipitation ### Question 20
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a particular vitamins chemical formula has one cobalt atom. what is the…
\(1358\ g/mol\)
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17. match the correct term to complete the sentence. a(n) ___________ r…
endothermic ### Question 18
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15. choose the best answer. when a(n) ______ agent oxidizes, it causes …
A. reducing
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a particular protein sample is found to have one atom of iron in its ch…
The molar mass of the protein is approximately \(16924\space g/mol\)
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13. choose the best answer. _____ reactions involve the transfer of pro…
B. Acid - base ### Question 14
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11. choose the best answer. which type of reaction is this? $\\ce{cl_{2…
A. redox ### Question 12
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9. choose the best answer. ____ is the process in which an atom or ion …
A. Reduction (assuming the first option is labeled A, but as per the options given: Reduction) ### Question 10
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what is the mass percentage of c in morphine, c₁₇h₁₉no₃? provide an ans…
\(71.56\)
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7. match the correct term to complete the sentence. a(n) __________ inc…
catalyst ### Question 8
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5. choose the best answer. when a(n) ______ agent reduces, it causes ox…
B. oxidizing (assuming the options are labeled as A. reducing, B. oxidizing, C. conserving, D. equating) ### Question 6
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determine the quantity in moles of ag that are in 58.9 grams of ag₂o.
\(0.508\ mol\)
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calculate the number of atoms of o in 88.9 moles of cr₃(po₄)₂.
\(4.283\times 10^{26}\) O atoms
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which of the following contains the most moles of atoms? answer: a 1 g …
A. 1 g of helium
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3. choose the best answer. what is the balanced equation for the follow…
\( 2\text{C}_4\text{H}_{10} + 13\text{O}_2 ightarrow 8\text{CO}_2 + 10\text{H}_2\text{O} \) (the first option) ### Question 4
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determine the number of moles in $5.82 \\times 10^{23}$ formula units o…
\(0.966\)
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1. match the correct term to complete the sentence. a(n) __________ rea…
exothermic ### Sub - Question 2
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| | redox reaction | acid-base reaction | precipitation reaction $2\\ce…
The table is filled as per the above analysis (checkmarks in respective columns for each reaction/description).
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8) look at the oxidation numbers in this reaction. then choose whether …
yes ### Question 9
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1) choose the best answer. what is likely a reactant in a combustion re…
B. \( \text{C}_2\text{H}_4 \) ### Question 2
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3) balance the chemical equation for the combustion reaction by typing …
s: ### Question 3: \( \boldsymbol{2} \) \( \text{C}_4\text{H}_{10} + \boldsymbol{13} \text{O}_2 ightarrow \boldsymbol{8} \text{CO}_2 + \boldsymbol{10} \text{H}_2\text{O} \) ### Qu…
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6) drag and drop the terms with the descriptions. when new bonds are fo…
- when new bonds are formed, which means energy is released in the process: exergonic reaction - the release of heat into the surroundings during a chemical reaction: exothermic r…
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7) choose the best answer. what does this reaction indicate? $\\ce{ch_{…
It is an exergonic reaction. ### Question 8
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11) drag and drop the terms with the statements. this decreases the nee…
1. catalyst - This decreases the need for energy in a reaction and increases the reaction rate. 2. concentration - If the amount of reactant is increased, then the reaction rate w…
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20. choose the best answer. which of the following equations represents…
\( \text{MgCO}_3(s) ightarrow \text{MgO}(s) + \text{CO}_2(s) \) (the second option)
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18. choose the best answer. a reaction in which heat is required is cal…
C. thermal decomposition ### Question 19
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16. choose the best answer. when an ionic compound is dissolved in wate…
A. a dissociation ### Question 17
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14. choose the best answer. a reaction in which an electric current is …
D. electrolysis ### Question 15
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12. choose the product that best provide evidence of chemical change wi…
gas (the option with "gas" as text) ### Question 13
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oxygen + carbon \\stackrel{\\text{reactants}}{\\longrightarrow} carbon …
No, because the product is not breaking down into reactants.
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ammonium nitrate, nh₄no₃, is a popular fertilizer because it decomposes…
B. $\ce{N2(g) + O2(g) + H2O(g)}$ (assuming the options are labeled A, B, C, D with B being the second option as per the list) ### Second Question (Identify Two Cations)
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9. choose the best answer. what likely formed in this reaction? image o…
D. precipitate (assuming the options are labeled with letters, if not, just "precipitate" as the correct option from the given choices: light, gas, heat, precipitate)
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7. choose the best answer. another name for combination reaction is a _…
A. synthesis ### Question 8
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5. choose the best answer. which type of reaction occurs when elemental…
A. synthesis ### Question 6
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the following chemical equation shows the formation of silver chloride.…
A. \(Fe(NO_{3})_{3}(aq)\) ### Second Sub - Question (Evidence of Product Formation)
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1. choose the best answer. what type of single replacement reaction is …
the replacement of hydrogen in an acid by a metal ### Question 2
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7) balance the double replacement equation by typing the numbers in the…
1, 1, 1, 2 ### Question 8:
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6) choose the best answer. the yellow substance in the test tube shown …
A. precipitate
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5) choose the best answer. which of these is not a double replacement r…
The reaction \(2\ce{HCl}+\ce{CaCO3} ightarrow\ce{CaCl2}+\ce{H2O}+\ce{CO2}\) (the second option) is NOT a double replacement reaction.
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3) choose the best answer. look at the products of this equation. what …
A. gas ### Question 4
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1) drag and drop the words with the descriptions. two aqueous compounds…
1. double replacement reaction - two aqueous compounds exchange ions to produce two new compounds 2. gas - bubbles are formed to indicate this type of product has formed 3. dissoc…
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use the equation to answer the question. \\ce{_{92}^{238}u -> _{90}^{23…
alpha decay
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4) drag and drop the equations with the descriptions. $2\\text{al}(s) +…
- \( 2\text{Al}(s) + 3\text{CuCl}_2(aq) ightarrow 2\text{AlCl}_3(aq) + 3\text{Cu}(g) \): the replacement of a metal cation by another metal - \( 2\text{Li}(s) + 2\text{H}_2\text{O…
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3) drag and drop the letters to the correct locations. complete the gen…
Reactant gray box: \( B \); First product gray box: \( B \); Second product gray box: \( A \) (So filling the blanks: left reactant blank: \( B \), first product blank: \( B \), s…
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1) choose the best answer. a list of elements that are ranked in decrea…
B. activity series ### Sub - Question 2
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6. what is the mathematical ratio of the volume of oxygen created to th…
1:2 (the option with "1:2") ### Question 7
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radium nucleus radon nucleus which process does the image illustrate? (…
transmutation
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3. true or false, this is the correct reverse equation of the burning o…
False ### Question 4
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1. for every unit of oxygen collected, how many units of hydrogen gas w…
A. 2 ### Question 2
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11) choose all that apply. which two products complete the unbalanced d…
$\ce{H_2}$ (the option with $\ce{H_2}$), $\ce{N_2}$ (the option with $\ce{N_2}$)
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which two products complete the unbalanced decomposition reactions? $ce…
For $\ce{Fe2O3 \xrightarrow{elect} }$: $\ce{O2}$, $\ce{Fe}$ For $\ce{NaCl(s) \xrightarrow{elect} }$: $\ce{Na}$, $\ce{Cl2}$ (In boxed form for selection: First reaction: $\boldsymb…
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8) drag and drop the words with the descriptions. reaction in which hea…
- reaction in which heat is required: thermal decomposition - reaction in which an electric current is required: electrolysis - reaction that requires a catalyst: catalytic decomp…
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6) choose the best answer. which of the following reactions shows that …
$\boldsymbol{\ce{H_{2}O_{2} \xrightarrow{\text{Pd}} H_{2} + O_{2}}}$ (the second option: $\ce{H_{2}O_{2} \xrightarrow{\text{Pd}} H_{2} + O_{2}}$) ### Question 7
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5) choose the best answer. which of the following reactions shows that …
$\boldsymbol{\ce{Fe + 2S ->[\Delta] FeS_{2}}}$ (the third option: $\boldsymbol{\ce{Fe + 2S \xrightarrow{\Delta} FeS_{2}}}$)
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6. based on periodic trends of electronegativity, what statement regard…
Fluorine has the strongest tendency to attract electrons.
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3) choose the best answer. which of these reactions does not represent …
\( 2KCl(s) ightarrow 2K(s) + Cl_2(g) \) (the third option) ### Question 4
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unit 5 quiz 1 miller, z. chemistry a_section 1_fall 25/26 / unit 5 - ch…
2 ### Second Question (K₂SO₄ Coefficient)
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unit 5 quiz 1 miller, z. chemistry a_section 1_fall 25/26 / unit 5 - ch…
2Mg(s) + O₂(g) → 2MgO(s) (the third option) ### Second Question (Coefficient for O₂ in C₃H₈ Combustion)
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!miller, z. chemistry a_section 1_fall 25/26 / unit 5 - chemical reacti…
B. \( \text{Mass}_{\text{reactants}} = \text{Mass}_{\text{products}} \) (assuming the option with this is labeled as such, e.g., if the second option is B, then "B. \( \text{Mass}…
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9. choose the best answer. according to le chatelier’s principle, what …
The reaction will shift toward the products. ### Question 10
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8. drag and drop the names to the reactions. ______ $2\\ce{nh_{3}} + \\…
1. \(2\text{NH}_3 + \text{H}_2\text{SO}_4 ightarrow (\text{NH}_4)_2\text{SO}_4\): synthesis 2. \(4\text{C}_5\text{H}_9\text{O} + 27\text{O}_2 ightarrow 20\text{CO}_2 + 18\text{H}_…
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7. choose the best answer. when the following equation is balanced, wha…
3