化学
化学反応、化学量論、分子構造、元素の性質。
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multiple choice 10 points what is the name of hbr? hydrogen bromine aci…
hydrobromic acid
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6 multiple choice 10 points what is the name of h₂so₄? sulfur acid sulf…
sulfuric acid
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5 multiple choice 10 points which of the following is the correct formu…
\(HC_2H_3O_2\) (the option \(HC_2H_3O_2\) is the correct one)
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multiple choice 10 points which of the following is the correct formula…
\(H_2S_2O_3\) (the third option)
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3 multiple choice 10 points which of the following is the correct formu…
\(H_{2}SO_{3}\)
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multiple choice 10 points which of the following is the correct formula…
\(HNO_{3}\) (the fourth option)
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multiple choice 10 points which of the following is the correct formula…
\(H_3AsO_3\) (first option)
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multiple choice 10 points what is the iupac name of the base csi? cesiu…
cesium iodide
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7 multiple choice 10 points what is the name for zns? zinc sulfate zinc…
Zinc Sulfide
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6 multiple choice 15 points what is the name for fe(no₂)₂? iron (iii) n…
iron (II) nitrite
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chemical digestion of proteins begins in the ___ with the aid of pepsin…
B. stomach B. similar to gastric bypass surgery in that it reduces the size of the stomach
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multiple choice 15 points what is the name for feo? iron oxide iron (i)…
Iron (II) oxide
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multiple choice 10 points what is the formula for the following compoun…
A. \(NH_4NO_3\)
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multiple choice 10 points what is the correct formula for the compound,…
\(Li_2O\) (the third option)
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multiple choice 15 points what is the formula for gold (iii) nitride? a…
C. AuN
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1 multiple choice 15 points what is the formula for mercury (i) phosphi…
\(Hg_3P\) (the first option)
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10 multiple choice 10 points what is the name for fe(no₂)₂? iron (iii) …
iron (II) nitrite
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9 multiple choice 10 points what is the name for hg(no₃)₂? mercury (i) …
mercury (II) nitrate
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8 multiple choice 10 points what is the name for pbbr₄? lead (iv) bromi…
lead (IV) bromide (the second option in the multiple - choice list)
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7 multiple choice 10 points what is the name for cuco₃? copper (i) carb…
copper (II) carbonate
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6 multiple choice 10 points what is the name for co₃n₂? cobalt (iii) ni…
cobalt (II) nitride
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5 multiple choice 10 points what is the formula for mercury (i) phosphi…
\(Hg_3P\) (the first option)
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4 multiple choice 10 points what is the formula for copper (ii) oxide? …
CuO
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3 multiple choice 10 points what is the formula for lead (iv) chloride?…
PbCl₄ (the fourth option)
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2 multiple choice 10 points what is the correct formula for manganese (…
MnPO₄
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what is the formula for chromium (iii) carbonate? cr₃(co₃)₂ cr₂co₃3 crc…
correct answer not given
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type 2 ionic exit ticket 1 multiple choice 10 points what is the formul…
correct answer not given
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10 multiple choice 10 points what is the name of the compound with the …
Strontium diiodide
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9 multiple choice 10 points what is the iupac name of the base mg(oh)₂?…
A. Magnesium hydroxide
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6. write lewis structures for the following. show all resonance structu…
a) $\text{NO}_2^-$: Central N bonded to two O (one double, one single); N has 1 lone pair, single-bonded O has 3 lone pairs, double-bonded O has 2 lone pairs. 2 resonance structur…
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5. write lewis structures for the following molecules or ions, which ha…
a) PF₅: Central P with 5 single bonds to F (each F has 3 lone pairs; P has 10 valence e⁻). b) XeF₆: Central Xe with 6 single bonds to F and 1 lone pair (each F has 3 lone pairs; X…
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fff: types of support use the information below to answer the question …
They can be used without any detrimental effect on the surface design.
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2 choose the best answer using the periodic table. what is the name of …
magnesium phosphide
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scih4u structure and properties of matter assignment name: saadia moham…
| e⁻ | Principle (n) | Orbital Shape (l) | Magnetic (mₗ) | Spin (mₛ) | |-----|----------------|--------------------|----------------|------------| | 1 | 3 | 0 | 0 | -1/2 | | 2 | 3…
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reference the conversion below to determine how many liter are in 10.0 …
D. 9.46 L
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proposed lewis structure is the proposed lewis structure reasonable? ye…
Yes. ### Second Lewis Structure (N - O - Cl)
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concept check which of the following is false when ethanol (c₂h₅oh) dis…
D. The formation of the solution occurs step - by - step
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fat molecules with longer chains of carbon atoms tend to be transported…
A. True
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an alpha particle has a mass of 2 amu. a mass of 4 amu. a charge of -1.…
For the alpha particle question: a mass of 4 amu. For Question 8 (beta particle): a charge of -1.
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dalton, a chemist, has a table of the melting points and boiling points…
1500
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austin, a chemist, has a table of the melting points and boiling points…
900
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fff: types of support use the information below to answer the question.…
dissolvable and standard
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what is the difference between heat and temperature? match the words in…
Temperature is a measure of the kinetic energy of molecular motion. Heat is the energy transferred from one object to another.
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match the molecular shapes with the lewis structures. choices 11 bent l…
- First Lewis structure (CH₄): tetrahedral - Second Lewis structure (NH₃): trigonal pyramidal - Third Lewis structure (BCl₃): trigonal planar
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1. choose the best answer based on the lewis structure. what is the cen…
oxygen
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drag and drop the molecular shapes with the lewis structures. choices t…
- \( \text{PF}_3 \): trigonal pyramidal - \( \text{BeF}_2 \): linear - \( \text{CCl}_4 \): tetrahedral - \( \text{GeF}_2 \): bent - \( \text{BF}_3 \): trigonal planar
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6) drag and drop the molecular shapes with the images. choices tetrahed…
1. linear 2. trigonal planar 3. bent 4. tetrahedral 5. trigonal pyramidal
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7) choose the best answer. which of these represents a correctly drawn …
The second structure (the one with lone pairs on all oxygen atoms and the correct total electron count) is the correct Lewis structure for \(NO_{3}^{-}\).
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6) choose the best answer. what is the central atom in this lewis struc…
nitrogen
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5) choose the best answer. how many lone pairs of electrons are present…
2
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what are three methods of food preservation that you could do to preven…
1. drying, canning and salting 2. Smoking
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question 27 (3 points) rank these compounds in order of increasing boil…
Propane ($\text{CH}_3\text{CH}_2\text{CH}_3$) < methoxymethane ($\text{CH}_3\text{OCH}_3$) < ethanol ($\text{CH}_3\text{CH}_2\text{OH}$)
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you can use this periodic table during the quiz. however, as stated in …
$(n, l, m_l, m_s) = (3, 1, +1, +\frac{1}{2})$ or $(3, 1, +1, -\frac{1}{2})$
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question 25 (3 points) predict whether the xeo₃ molecule is polar or no…
The XeO₃ molecule is polar. Its trigonal pyramidal geometry (from Lewis structure with 1 lone pair on Xe) leads to unbalanced bond dipoles, creating a net dipole moment.
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question 21 (1 point) the number of nonbonding domains in the co₂ molec…
4 # Question 22
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question 20 (1 point) a molecule exhibits the trigonal planar shape. ho…
Three
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question 18 (1 point) for which of the following compounds is hydrogen …
\(CH_3NH_3\) ### Question 19
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question 17 (1 point) for each of the following pairs of molecules, det…
\(C_{2}H_{5}OH, CH_{3}OCH_{3}, CF_{4}, H_{2}O\)
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question 16 (1 point) the strong intermolecular forces between molecule…
hydrogen bonding
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question 15 (1 point) which of the following diatomic molecules has the…
\(Br_2\)
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question 14 (1 point) the 3p subshell in the ground state of atomic iod…
6
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question 13 (1 point) the second shell in the ground state of atomic su…
8
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question 24 (6 points) for hso4 ion a) draw the lewis structure diagram…
a) Lewis structure: S at center, double bonds to 2 O, single bonds to 1 O-H and 1 O⁻ (lone pairs on all O atoms) b) Tetrahedral c) Polar d) AX₄ e) ~109.5° f) Ion-dipole force (or …
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question 12 (1 point) how many orbitals in the n = 3 energy level? 25 1…
9
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question 11 (1 point) which of the following has the greatest number of…
\(ClF_3\)
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question 10 (1 point) the molecules in the following set do not include…
trigonal pyramidal
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question 9 (1 point) why do ionic formula units usually have higher mel…
The intermolecular forces in covalent compounds are weaker than those in ionic formula units.
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using the vsepr theory, predict that the shape of the carbonate ion, co…
triangular planar
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question 8 (1 point) the dominant type of intermolecular force in a sam…
B. dipole
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the strongest type of intermolecular force in a sample of ch₃oh is ____…
hydrogen bonding
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which of the molecules, co₂, nh₃ and bcl₃ will be polar? co₂, nh₃ and b…
$\text{NH}_3$
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question 7 (1 point) place the following compounds in order of decreasi…
HF > NBr₃ > H₂ (the last option)
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question 6 (1 point) which of the molecules, co₂, nh₃ and bcl₃ will be …
\(NH_3\)
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the dominant type of intermolecular force in a sample of ncl₃ is ______…
B. dipole
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question 23 (2 points) write a complete electron configuration for an i…
$1s^22s^22p^63s^23p^64s^23d^{10}4p^65s^24d^{10}5p^66s^24f^{14}5d^{10}$
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question 6 (1 point) which of the molecules, co₂, nh₃ and bcl₃ will be …
\(NH_3\) ### Question 7
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which of the following has the greatest number of unshared electrons ar…
C. $\text{ClF}_3$
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test #1- unit 1 1:26:42 remaining none of the above question 5 (1 point…
triangular planar
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question 3 (1 point) the strongest type of intermolecular force in a sa…
Question 3: hydrogen bonding Question 4: dipole - dipole
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place the following compounds in order of decreasing strength of interm…
HF > NBr₃ > H₂
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question 2 (1 point) based on the vsepr theory, which one of the follow…
B. \(HCN\)
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why do ionic formula units usually have higher melting and boiling poin…
The intermolecular forces in covalent compounds are weaker than those in ionic formula units
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what is the strongest type of intermolecular force present in ch₃f? ion…
dipole-dipole
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the molecules in the following set do not include which of the followin…
tetrahedral
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based on the vsepr theory, which one of the following molecules is line…
B. HCN
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the 3p subshell in the ground state of atomic iodine contains ---------…
6 (Note: The duplicate 6 option is likely a typo; the correct choice is 6.)
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for which of the following compounds is hydrogen bonding the main inter…
CH₃NH₃
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the boiling point of ch4 is much lower than that of nh3. this is becaus…
hydrogen bonding exist between $\text{NH}_3$ molecules
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which of the following would indicate the strongest intermolecular forc…
a high melting point
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the number of electron domains exists in the valence shell of the boron…
3
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a molecule exhibits the trigonal planar shape. how many electron domain…
B. Three
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which of the following is not a valid set of four quantum numbers? (n, …
1, 1, 0, +1/2
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how many orbitals in the n = 3 energy level? 25 16 9 4 1
9
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the lowest energy level that contains f orbitals is n = 5 3 2 4 1
4
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unit 2 study guide instructions answer the following questions. introdu…
1. atomic mass and similar chemical properties 2. ~1.975 moles 3. 36 grams 4. 6.022 × 10²³ particles 5. the mass of a carbon-12 atom (taken as 12 atomic mass units)
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what is the total number of moles contained in 115 grams of c₂h₅oh? a. …
D. 2.50
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21. given the reaction. ___k₂cr₂o₇ + ___hcl → ___kcl + ___crcl₃ + ___cl…
C. 3
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when amanda poured some of the liquid in a test tube, she noticed that …
1. Adhesion 2. Cohesion 3. Solvent property 4. Polar covalent 5. Neutral 6. Water
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which one of the following molecules has dipole - dipole forces as its …
D. \(H_2S\)
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example 6 - 14: which one of the liquids, ho - ch₂ch₂ - oh or ch₃ch₂oh,…
\(CH_3CH_2OH\) has the highest vapour pressure at room temperature.