Chemistry
Chemical reactions, stoichiometry, molecular structures, and element properties.
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how many groups are in the periodic table? 12 14 16 18
D. 18
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how was your selected vocabulary different from your partners? turning …
1. To find the rhyme - scheme, one must identify the end - sounds of the lines in the stanzas and assign a letter to each unique sound. For example, if the end - sounds of the fir…
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question 3 (1 point) a yellow liquid is found to be corrosive. how are …
B. The yellow color of the liquid is a physical property., C. The corrosive nature of the liquid is a chemical property.
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question 1 (1 point) which of the following are typically studied in ch…
C. Atoms and molecules
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question 17 which of the following statements regarding erythrocytes is…
C. Bilirubin from worn out erythrocytes is recycled by the liver.
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question 1 (1 point) if a compound were to form between na and n a) na …
B. N would form a 3 - charged ion
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25. using the key on the top - row of the picture shown below, (1) list…
A. (1) 2 atoms of one element, 1 atom of another element; (2) \(A_2B\) B. (1) 3 atoms of one element; (2) \(A_3\) C. (1) 1 atom of one element, 2 atoms of another element; (2) \(A…
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3. carbon disulfide (cs2) reacts with oxygen to form carbon dioxide and…
80 g
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read these lines: that conqueredst alexandria by the right of arms, and…
C. abaaaba
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chemistry quiz #2 - physical and chemical pro... 0:09:07 elapsed combin…
False True False False False
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2. 1.00 x 10² g of aluminum and 1.50 x 10² g of oxygen are reacted acco…
i. Mass of product ($Al_{2}O_{3}$): 189 g ii. Mass of Al: 0 g, Mass of $O_{2}$: 10.96 g
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changing the size and shapes of pieces of wood would be a chemical chan…
False False True True False
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chemistry quiz #2 - physical and chemical pro... water reacts with sodi…
- Water reacts with sodium metal: 2. Chemical Change - A solid is crushed into a powder: 1. Physical Change - Mixing salt and pepper: 1. Physical Change - Two chemicals are mixed …
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names & formulas for ionic compounds give the name or formula for the f…
1) Sodium carbonate 2) Sodium hydroxide 3) Magnesium bromide 4) Potassium iodide 5) Iron(II) chloride 7) Zinc hydroxide 8) Beryllium sulfate 9) Chromium(II) fluoride 10) Aluminum …
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a physical change is when the chemical composition (such as h2o) does n…
Breaking glass, Chopping wood, Boiling water
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highest lattice energy csbr licl lowest lattice energy answer bank mgs …
Highest lattice energy: $MgS$ Lowest lattice energy: $CsBr$
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classify each of the compounds as a molecule or a salt. molecule: c₃h₈,…
Molecule: $C_3H_8$, $SO_3$, $CH_2O$ Salt: $K_2CO_3$, $CaBr_2$, $NaCl$
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95. urea (ch₄n₂o) is a common fertilizer that can be synthesized by the…
Limiting reactant: $NH_3$ Theoretical yield of urea: $240.71\ kg$ Percent yield: $70.0\ \%$
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for each chemical formula write the chemical name in the blank as use b…
| Chemical Formula | Chemical Name | | ---- | ---- | | $\text{Na}_3\text{P}$ | Sodium phosphide | | $\text{Al}_2\text{O}_3$ | Aluminum oxide | | $\text{Li}_2\text{S}$ | Lithium su…
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read these lines from \the monks tale.\ for hercules, a victor of sover…
D. abcd
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question 9 of 10 read this poem: roses are red, violets are blue, dodoe…
A. abba
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determine whether each statement is true or false. adhesion is an attra…
1. True 2. False 3. True 4. False 5. True
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adhesive forces between water molecules and glass molecules help water …
Water molecules are held together by hydrogen bonds as they rise in a capillary tube. Water rises farther in a narrow glass tube than in a wide glass tube.
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water can travel up a glass tube against the force of gravity! this is …
- Adhesive - Cohesive - Adhesive; gravitational
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a scoop - shaped concave meniscus forms when adhesive forces between a …
Oil: Adhesive and cohesive forces are equal. Water: Adhesive forces are greater than cohesive forces. Mercury: Cohesive forces are greater than adhesive forces.
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true or false: nacl is a molecule. 36/40
FALSE
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test your knowledge 3 label the image of the bomb calorimeter.
From left - to - right and top - to - bottom (assuming typical placement): 1. Stirrer (not in the list but often present for even heat distribution, if we must choose from the lis…
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in the reaction: c₄h₆o₄ + fad → c₄h₄o₄ + fadh₂, what type of reaction t…
C. Dehydrogenation
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fill in the blank question muscle fibers that have an abundant blood su…
slow
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fill in the blank question muscle fibers that have an abundant blood su…
slow
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which is a complete sentence? you must be going somewhere nice your out…
Two hydrogen atoms and one oxygen atom compose each molecule of water.
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fill in the blank question muscle fibers that have an abundant blood su…
slow
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match the principal shell number to the maximum number of electrons tha…
$n = 1$: 2 $n = 2$: 8 $n = 3$: 18 $n = 4$: 32 $n = 5$: 50
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state whether the statement about the relative potential energies of th…
1. True 2. False 3. False 4. True 5. False
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43. write balanced complete ionic and net ionic equations for each reac…
Complete ionic equation: $H^+(aq)+Cl^-(aq)+Li^+(aq)+OH^-(aq) ightarrow H_2O(l)+Li^+(aq)+Cl^-(aq)$ Net ionic equation: $H^+(aq)+OH^-(aq) ightarrow H_2O(l)$
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which one of the following is the correct dissociation equation for alb…
C. $AlBr_{3}(s) ightarrow Al^{3 +}(aq)+3Br^{-}(aq)$
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which of the following are considered advantages of chrome os? select a…
B. Boots quickly, D. Easy remote management
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complete the balanced dissociation equation for the compound below in a…
$Mg(OH)_2(s) ightleftharpoons Mg^{2 + }(aq)+2OH^-(aq)$
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multiple choice question in smooth muscle fibers, the thick filaments d…
dense bodies
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write the balanced dissociation equation for solid aluminum sulfide in …
$Al_2S_3(s) ightarrow2Al^{3 + }(aq)+3S^{2 - }(aq)$
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write the balanced dissociation equation for solid sodium acetate in aq…
$NaC_2H_3O_2(s) ightarrow Na^+(aq)+C_2H_3O_2^-(aq)$
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complete the balanced dissociation equation for the compound below in a…
$Hg_2SO_4(s) ightarrow Hg_2^{2 + }(aq)+SO_4^{2 - }(aq)$
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39. complete and balance each equation. if no reaction occurs, write no…
NO REACTION
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the ions formed when ch₃oh dissociates in water are answer: a ch₃⁺ and …
E. No ions form, as $CH_3OH$ does not dissociate.
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the following picture of an aqueous solution best represents answer: a …
B. a weak electrolyte
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complete the balanced dissociation equation for the compound below in a…
$HNO_3(aq) ightarrow H^+(aq)+NO_3^-(aq)$
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write the balanced dissociation equation for solid iron(iii) hydroxide …
$Fe(OH)_3(s) ightleftharpoons Fe^{3 + }(aq)+3OH^-(aq)$
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which one of the following is a strong base? a mg(oh)₂ b ca(oh)₂ c nh₃ …
B. $Ca(OH)_2$
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complete the balanced dissociation equation for the compound below in a…
LiCl(s) $ ightarrow$ Li⁺(aq) + Cl⁻(aq)
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complete the balanced dissociation equation for the compound below in a…
LiCl(s) $ ightarrow$ Li$^+$(aq) + Cl$^-$(aq)
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complete the balanced dissociation equation for the compound below in a…
$HClO_4(aq) ightarrow H^+(aq)+ClO_4^-(aq)$
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complete the balanced dissociation equation for the compound below in a…
$CaBr_2(s) ightarrow Ca^{2+}(aq)+ 2Br^-(aq)$
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write the balanced dissociation equation for solid nickel(ii) iodide in…
$NiI_2(s) ightarrow Ni^{2 + }(aq)+2I^{-}(aq)$
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which one of the following can be classified as a strong electrolyte? a…
C. $NH_{4}NO_{3}$
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the work of minimalist artists is generally created from natural materi…
False
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write the balanced dissociation equation for solid iron(iii) nitrate in…
$Fe(NO_3)_3(s)\to Fe^{3+}(aq)+3NO_3^-(aq)$
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the reaction of glucose, c₆h₁₂o₆, with oxygen produces carbon dioxide a…
First question: 19 Second question: 13
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given the unbalanced equation: al + cuso₄ → al₂(so₄)₃ + cu. when proper…
Question 1: 9 Question 2: 5
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question 5 6 pts the following reaction: h₂ + i₂ → 2hi, is an example o…
Question 5: combination. Question 6: single - replacement.
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question 3 6 pts the following reaction: c + o₂ → co₂, is an example of…
Question 3: combination. Question 4: single - replacement.
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write the balanced dissociation equation for solid cesium phosphate in …
$Cs_3PO_4(s) ightarrow 3Cs^+(aq)+PO_4^{3 - }(aq)$
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the ions formed when sr(c₂h₃o₂)₂ dissociates in water are answer: a sr²…
C. $Sr^{2 + }$ and $C_2H_3O_2^-$
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question 1 6 pts the following reaction: mg + feo → mgo + fe, is an exa…
Question 1: C. single - replacement Question 2: C. single - replacement
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complete the balanced dissociation equation for the compound below in a…
NaCl(s) $ ightarrow$ Na⁺(aq) + Cl⁻(aq)
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which of the following phosphate salts are insoluble in water? a (nh₄)₃…
E. $Ca_3(PO_4)_2$
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write the balanced dissociation equation for solid rubidium hydroxide i…
$RbOH(s) ightarrow Rb^+(aq)+OH^-(aq)$
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write the balanced dissociation equation for solid copper(ii) sulfide i…
CuS(s) $ ightleftharpoons$ Cu$^{2 + }$(aq) + S$^{2 - }$(aq)
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the precipitate formed when ni(no₃)₂ is mixed with li₂s is answer: a. n…
B. NiS
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what is the oxidation number of each vanadium atom in v₂o₅?
5
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question 1 1. an essential characteristic of effective learning is the …
B. metacognition
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a 50.0 ml solution of ca(oh)₂ with an unknown concentration was titrate…
$0.0966$
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a 50.0 ml solution of ca(oh)₂ with an unknown concentration was titrate…
$0.00483$
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a 50.0 ml solution of ca(oh)₂ with an unknown concentration was titrate…
$9.656\times10^{-3}$
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a 50.0 ml solution of ca(oh)₂ with an unknown concentration was titrate…
$Ca(OH)_2(aq)+2HNO_3(aq) ightarrow Ca(NO_3)_2(aq) + 2H_2O(l)$
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a theme of this story is that nature and animals are beautiful. how doe…
Lily and her mom decide not to use chemicals to remove the moths from her vine.
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write a balanced chemical equation based on the following description: …
$2HNO_3(aq)+MgCO_3(s) ightarrow Mg(NO_3)_2(aq)+H_2O(l)+CO_2(g)$
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write the balanced net ionic equation for the reaction when licl and na…
$3Li^{+}(aq)+PO_{4}^{3 - }(aq) ightarrow Li_{3}PO_{4}(s)$
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write a balanced chemical equation based on the following description: …
$2C_6H_{14}(g)+19O_2(g) ightarrow 12CO_2(g)+14H_2O(g)$
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the following reaction takes place in aqueous solution. hcl (aq) + koh(…
$H^{+}(aq)+OH^{-}(aq) ightarrow H_{2}O(l)$
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write the balanced net ionic equation for the reaction when alcl₃ and n…
$Al^{3+}(aq)+3OH^{-}(aq) ightarrow Al(OH)_3(s)$
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which choice correctly identifies the oxidation number (o.n.) for the g…
D. $Se^{2 - }, O.N.=-2$
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classify the type of reaction is represented by the following equation:…
A. acid - base
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5 formula 1 punto determine the pressure, in atm, when a constant - vol…
$1.2$ ### 6.
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4. what kinds of materials or conditions help preserve fossils? 5. what…
4. Sediments like clay, silt, sand and low - oxygen environments. 5. Fossilized wood where organic material is replaced by minerals; forms when wood is buried and minerals seep in…
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1. respuestas múltiples 1 punto which phase(s) of matter has variable s…
Gas ### 2.
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in the following chemical reaction, which element is the reducing agent…
B. Ag
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what solid would form when phosphoric acid (h₃po₄) is added to milk of …
B. $Mg_3(PO_4)_2$
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complete the balanced neutralization equation for the reaction below. b…
$HClO_4(aq)+CsOH(aq) ightarrow CsClO_4(aq)+H_2O(l)$
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complete the balanced molecular chemical equation for the reaction belo…
$2NH_4Br(aq)+Pb(NO_3)_2(aq) ightarrow PbBr_2(s) + 2NH_4NO_3(aq)$
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which of the following design elements characterize baroque art and arc…
D. Diagonal movement, curving forms, and dramatic light and shadow
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write a balanced chemical equation based on the following description: …
$N_2(g)+3H_2(g) ightarrow 2NH_3(g)$
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in the following chemical reaction, which element is the oxidizing agen…
A. Sn
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question 3 of 19 complete the balanced molecular chemical equation for …
$\text{Pb(NO}_3)_2(aq)+2\text{LiCl}(aq) ightarrow\text{PbCl}_2(s)+2\text{LiNO}_3(aq)$
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write a balanced chemical equation based on the following description: …
$2KOH(aq)+(NH_4)_2SO_4(aq) ightarrow K_2SO_4(aq)+2H_2O(l)+2NH_3(g)$
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which of the following reactions is an acid - base reaction? answer: a …
B. $NH_3(aq)+HF(aq) ightarrow NH_4^+(aq) + F^-(aq)$
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select the lewis structure that most accurately represents sulfur diflu…
The second structure from the top (where S is the central atom, single - bonded to two F atoms and has 2 lone - pairs on S and 3 lone - pairs on each F) is the correct Lewis struc…
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select the lewis structure that most accurately represents methane (ch₄…
The structure with a carbon atom in the center and single bonds to four hydrogen atoms (the first and third structures shown in the image if they are correct representations of si…
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part 2: physical vs. chemical properties review notes • physical proper…
1. P. Gold is yellow and shiny. 2. C. Iron reacts with oxygen to form rust. 3. P. Water boils at 100°C. 4. C. Baking soda reacts with vinegar to produce carbon dioxide gas. 5. P. …
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write the balanced dissociation equation for solid copper(ii) sulfide i…
$CuS(s) ightarrow Cu^{2+}(aq)+S^{2 - }(aq)$
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write the balanced dissociation equation for solid copper(ii) sulfide i…
CuS(s) $ ightleftharpoons$ Cu$^{2 + }$(aq)+S$^{2 - }$(aq)