Chimie
Réactions chimiques, stœchiométrie, structures moléculaires et propriétés.
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a certain drug is made from only two ingredients: compound a and compou…
142 milliliters
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this photograph was taken in during the progressive era. what was the r…
C. The ratification of the Nineteenth Amendment
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chemistry: ions in chemical compounds name: micah carter hour: 7 date: …
| Ions | Chloride $Cl^{-}$ | Hydroxide $OH^{-}$ | Nitrate $NO_{3}^{-}$ | Sulfate $SO_{4}^{2 - }$ | Sulfide $S^{2 - }$ | Carbonate $CO_{3}^{2 - }$ | Phosphate $PO_{4}^{3 - }$ | | -…
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name symbol atomic number number of protons number of valence electrons…
| Name | Symbol | Atomic Number | Number of Protons | Number of Valence Electrons | | ---- | ---- | ---- | ---- | ---- | | hydrogen | H | 1 | 1 | 1 | | lithium | Li | 3 | 3 | 1 | …
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write the chemical formula for each of the following compounds. 6. carb…
16. CO 17. FeO 18. $P_{2}O_{5}$ 19. $H_{2}SO_{4}$ 20. $SO_{2}$
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an atom has 13 electrons. how many protons does it have?
13
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names and formulas of compounds write name for each of the following co…
1. sodium sulfide 2. ammonium chloride 3. copper(I) fluoride 4. copper(II) fluoride 5. lead(II) sulfate 16. CO 17. FeO 18. P₂O₅ 19. H₂SO₄ 20. SO₂
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quiz: first 20 elements, atomic structure, and periodic write the eleme…
1. Calcium 2. K 3. Argon 4. Cl 5. S 6. P 7. Silicon 8. Aluminum 9. Mg 10. Sodium 11. Neon 12. F 13. Beryllium 14. He 15. Carbon 16. Period 17. Group 18. Valence 19. Protons 20. 38…
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what determines the vast majority of an atoms properties?
The electron configuration of the atom.
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assuming 50 tons of pressure, at which temperatures is benzene a solid,…
A. It is a solid at 7 degrees, a liquid at 10 and 16 degrees, and a gas at 32 degrees celsius. D. It is a solid at 5 degrees, a liquid at 7 and 10 degrees, and a gas at 16 degrees…
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question 10 what of the following best describes soil liquefaction? a w…
A. when saturated soil behaves like a liquid
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12. what volume of distilled water must be added to 105 ml of 0.600 - m…
52.5 mL
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12. what volume of distilled water must be added to 105 ml of 0.600 - m…
$52.5\ mL$
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about mass numbers and atomic numbers to complete the table. name atomi…
| Name | Atomic Number | Number of Protons | Number of Neutrons | Mass Number | | ---- | ---- | ---- | ---- | ---- | | helium | 2 | 2 | 2 | 4 | | carbon | 6 | 6 | 6 | 12 | | oxyge…
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the atomic number and the mass number of atoms relate to their numbers …
| Name | Atomic Number | Number of Protons | Number of Neutrons | Mass Number | | ---- | ---- | ---- | ---- | ---- | | helium | 2 | 2 | 2 | 4 | | carbon | 6 | 6 | 6 | 12 | | oxyge…
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the formula for the sulfate ion is so₄²⁻. based on this information, wh…
A. $MgSO_{4}$, D. $K_{2}SO_{4}$
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strontium chloride is an ionic compound. it is used in fireworks to pro…
D. $[\ddot{Cl}:]^{-}[Sr]^{2 +}[\ddot{Cl}:]^{-}$
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garnets are a class of minerals which exist in many colors. theyre ofte…
$Ca^{2 + }$ and $SiO_{4}^{4 - }$: Ionic $Al^{3+}$ and $SiO_{4}^{4 - }$: Ionic $Si$ and $O$: Covalent
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group 17 elements are called halogens. halogen means \salt former,\ der…
To produce stable ions, halogens gain 1 electron(s) to form ions with a - 1 charge.
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chemical substances were originally named based on their properties, di…
Celestite (strontium sulfate): $SrSO_{4}$ Arcanite (potassium sulfate): $K_{2}SO_{4}$ Gypsum (calcium sulfate): $CaSO_{4}$
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question select the correct answer from each drop - down menu. complete…
First drop - down: 6 Second drop - down: 6 Third drop - down: 2 Fourth drop - down: 4
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move the cards to match the name with the correct chemical formula. che…
SrS - strontium sulfide $Na_2SO_4$ - sodium sulfate $Na_2S$ - sodium sulfide $SrSO_4$ - strontium sulfate $SrSe$ - strontium selenide $Na_2Se$ - sodium selenide
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a common chemical reaction involves two ionic compounds that exchange i…
For reactants: C. $AlBr_{3}+Na_{3}PO_{4}$ For products: B. $NaBr + AlPO_{4}$
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fill in the table by selecting the correct iupac name for each formula.…
RbCl: Rubidium chloride BeS: Beryllium sulfide Ba(C₂H₃O₂)₂: Barium acetate CsClO₃: Cesium chlorate
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originally, chemical substances were named based on their origins or pr…
Quicklime: $CaO$ Limestone: $CaCO_{3}$ Fluorite: $CaF_{2}$
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the formula for the sulfate ion is so₄²⁻. based on this information, wh…
A. $MgSO_{4}$, D. $K_{2}SO_{4}$
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hypobromite is a polyatomic ion with formula bro⁻. it is produced by th…
43 protons 44 electrons
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sodium hydroxide, also called lye, is an ingredient in many soaps. it i…
A. NaOH
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hydroxyapatite is composed of calcium ions (ca²⁺), phosphate ions (po₄³…
$Ca^{2 + }$ and $PO_{4}^{3 - }$: Ionic $P$ and $O$: Covalent $O$ and $H$: Covalent $PO_{4}^{3 - }$ and $OH^-$: Ionic $Ca^{2 + }$ and $OH^-$: Ionic
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44. water is known as the universal because it is able to dissolve more…
44. Solvent 45. Solvent; Solute 46. Polar; Positive; Negative 47. Specific - heat capacity; Heat; Temperature 48. does not 49. Cools 50. Dense; Float; Liquid 51. Neutral; 7; Equal…
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what was rutherfords atomic model called? * planetary model plum puddin…
1. Nuclear Model 2. Alkali Metals
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how many electrons does this ion have? * 10 points 34 16 s - 2 18 how m…
How many electrons does this ion have? 18 How many neutrons does this atom have? 18
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lesson 5 assignment: concentration ii part 1 1. a 180 - ml disinfectant…
1. Approximately 47.2% 2. 12% 3. Approximately 0.017% 4. Approximately 3260.9 ppm 5. 912 mL
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if you were to add a proton to a neutral atom what would change? (check…
1. E. All of the above 2. C. Atomic Mass
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which of the element(s) below have similar properties as calcium? (chec…
Radium, Magnesium
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33. what type of chemical bonding is shown in the picture below? k⁺ ··b…
(33) Ionic bonding (34) Covalent bonding (35) Oxygen; hydrogen (36) Polar (37) Hydrogen (38) 4 (39) Cohesion (40) Surface - tension (41) Adhesion (42) Capillary action (43) Cohesi…
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how many valence electrons does this atom have? * p: 33 n: 42
5
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what is the period number of this atom? * p: 33 n: 42
4
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what is the group number of this atom? * what is the period number of t…
15
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what is the atomic number of this atom? * p: 33 n: 42 33
33
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investigation 4 physical properties of materials the peak of mount ever…
1. Ice: Lower density (floats), melting point of 0°C due to open - lattice hydrogen - bonded structure. Water: Higher density, liquid at room temperature, high surface tension due…
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what is the atomic mass number of this atom? * your answer! this is a r…
75
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13. name some properties of the noble gases group.
Unreactive, colorless, odorless, tasteless gases at standard conditions, full outer - electron shell.
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31. use the diagram below to identify a and b and either covalent bondi…
(31) A: Covalent bonding; B: Hydrogen bonding (32) | Property | Description/Definition | Example in the Real World | |--|--|--| | Cohesion | The attraction between molecules of th…
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6. the solubility of oxygen gas is 0.007 g/100 ml at stp conditions. ho…
a. 0.007 g b. 0.007 g c. 0.021 g
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a chemical engineer is studying the rate of this reaction. 2so₃(g)→2so₂…
1. **Half - life**: - From the graph, if the initial concentration of $\text{SO}_3$ is around $0.10\ M$, the time when it reaches $0.05\ M$ is approximately $t_{1/2}=0.69\ s$ (rou…
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20. where are the most reactive elements? a. groups 1a and 2a b. groups…
(20) b. Groups 1A and 7A (21) d. the noble gases (22) d. hydrogen (23) c. 1000 (24) covalent (25) positive (26) negative (27) negative (28) ionic (29) b. polar (30) c. metal and a…
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this statue of leshan giant buddha in sichuan, china, is carved directl…
B. rainfall and chemical reaction
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suppose y = f(x) graphed in the figure below represents the cost of man…
(a) $(0,0)$ and $(4,f(4))$ (b) $<$
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use the drop - down menus to describe the behavior of elements in group…
First drop - down: gain 1; Second drop - down: lose 2
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drag the correct label to each event. each label can be used more than …
1. chemical weathering 2. mechanical weathering 3. chemical weathering 4. chemical weathering
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which is the correct formation of potassium chloride?
The correct formation is $[K]^+[Cl:]^-$ (the first option shown in the image).
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11. the horizontal rows of the periodic table are called a. groups c. f…
(11) b. Periods (12) c. the number of electron orbitals/shells (13) a. Groups (14) d. the number of valence electrons in the group (15) Cannot be determined without element - key …
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11. the text says \the periodic table is read like a book\. why is a bo…
Because both are read in a left - to - right and top - to - bottom order which helps in understanding patterns and sequences, in the case of a book for the story or information fl…
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question 8 (4 points) balance the following reaction in a basic solutio…
$4Ag(s)+O_{2}(g)+2H_{2}O(l)\to 2Ag_{2}O(s)+4OH^{-}(aq)$
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54) when an atom gains electrons, it is a) reduced b) oxidized c) ionic…
A. reduced
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5. for each of the following, determine whether the statement is true o…
a. False. A saturated solution of NaCl(s) cannot be filtered to remove the dissolved solute. b. True c. False. Pressure is a major factor only in the solubility of gases in water,…
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10. where on the periodic table would you look to find the group number?
At the top of each vertical column.
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a chemist is using 361 milliliters of a solution of acid and water. if …
$52.3$
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56) which of the following is not true about the unique properties of w…
B. It has a low specific heat.
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10) krypton (kr) 11) zinc (zn) 12) oxygen (o)
10) Electron Configuration: 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶ Noble Gas Configuration: [Ar]4s²3d¹⁰4p⁶ 11) Electron Configuration: 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰ Noble Gas Configuration: [Ar]4s²3d…
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the chemical equation for burning paper, or cellulose, is c₆h₁₀o₅ + 6o₂…
The reactants ($C_6H_{10}O_5$ and $O_2$) have more potential energy stored in their bonds than the products ($CO_2$ and $H_2O$) because the reaction is exothermic and the products…
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7) germanium (ge) electron configuration: noble gas configuration: 8) s…
7) Germanium (Ge): - Electron Configuration: $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^{2}$ - Noble Gas Configuration: $[Ar]4s^{2}3d^{10}4p^{2}$ 8) Sulfur (S): - Electron Con…
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questions 1. lets say that you have two bottles on the shelf. both labe…
1. Use silver nitrate solution. $NaCl(aq)+AgNO_3(aq) ightarrow AgCl(s)+NaNO_3(aq)$ (white precipitate), $NaI(aq)+AgNO_3(aq) ightarrow AgI(s)+NaNO_3(aq)$ (yellow precipitate). 2. A…
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what mass of helium (in g) does the balloon contain? 11.45 a 1.007 g sa…
The molar mass of the gas is approximately $56.9\text{ g/mol}$
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4) titanium (ti) electron configuration: ____________ noble gas configu…
4) Electron Configuration: 1s²2s²2p⁶3s²3p⁶4s²3d² Noble Gas Configuration: [Ar]4s²3d² 5) Electron Configuration: 1s²2s²2p⁶3s²3p³ Noble Gas Configuration: [Ne]3s²3p³ 6) Electron Con…
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physical properties of materials the peak of mount everest is 8,848 met…
1. Ice: Lower density (floats) due to hexagonal lattice structure; hard and brittle. Water: Liquid at room - temp, high surface tension due to hydrogen - bonding. 2. Identify cand…
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9. how do you determine the number of valance electrons that an element…
For main - group elements, use the group number. For transition metals, it's more complex involving s and some d electrons.
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the model shows the trend of electronegativity in the periodic table. u…
Fluorine; highest electronegativity
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11) which of the following is not a molecule? a) o₃ b) o₂ c) c d) dna e…
C. C
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the relationship among atoms, elements, and compounds is most like the …
A. bricks, brick houses, and large brick buildings
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drag and drop the elements to order them from largest atomic radius to …
Iodine, Bromine, Chlorine, Fluorine
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8) ____ is an example of something that has a basic ph. a) tomato juice…
B. Ammonia
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27. adding an acid to a solution a) increases, neutralize b) increases,…
B. Increases, decreases
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1) beryllium (be) electron configuration: noble gas configuration: 2) s…
1) Electron Configuration: $1s^{2}2s^{2}$; Noble Gas Configuration: $[He]2s^{2}$ 2) Electron Configuration: $1s^{2}2s^{2}2p^{6}3s^{2}3p^{2}$; Noble Gas Configuration: $[Ne]3s^{2}3…
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anchoring phenomenon inquiry launch preparing and cooking foods involve…
- What is the freshness level of each ingredient? - What is the ideal cooking temperature for this meat? - How long should I cook this vegetable to retain nutrients? - How large s…
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8. what are valance electrons?
Valence electrons are the electrons in the outermost shell of an atom and are involved in chemical bonding.
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electron configuration and orbital notation instructions: complete the …
Nitrogen: Electron Configuration: $1s^{2}2s^{2}2p^{3}$ Noble Gas Configuration: $[He]2s^{2}2p^{3}$ Fluorine: Electron Configuration: $1s^{2}2s^{2}2p^{5}$ Noble Gas Configuration: …
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electron configuration and orbital notation instructions: complete the …
**For Nitrogen**: Electron Configuration: 1s²2s²2p³ Electron Configuration (abbreviated): 1s²2s²2p³ Noble Gas Configuration (abbreviated): [He]2s²2p³ **For Fluorine**: Electron Co…
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which of the following is true of iron? a. it has the highest electrica…
B. It can exist in many alloys, usually with a carbon base.
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unit 2 atoms and the periodic table study guide vocabulary to know for …
1. d. protons 2. b. electrons 3. c. neutrons 4. a. Protons and electrons 5. The number of protons is equal to the atomic number of the element on the periodic table. 6. In a neutr…
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7. what do the elements found in the same group have in common?
Elements in the same group have the same number of valence electrons and similar chemical properties.
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question 7 (4 points) balance the following half - reaction in an acidi…
$HNO_2(aq)+H_2O(l)\to NO_3^-(aq)+3H^+(aq)+2e^-$
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6. where on the periodic table is a group found?
Groups are found as the vertical columns on the periodic table.
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question 6 (1 point) assign oxidation numbers to ch₃oh. c - h - o -
C -2, H +1, O -2
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question 5 (1 point) assign oxidation numbers to so₂. s - o -
S - +4, O - -2
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question 4 (1 point) assign oxidation numbers to agno₃. ag - n - o -
Ag - +1, N - +5, O - -2
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question 3 (1 point) why is a voltaic cell created in two separate beak…
To separate oxidation and reduction half - reactions and enable electron flow through an external circuit to generate electric current.
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3. where on the periodic table is a period found? a period is found as …
A period is found as a horizontal row on the periodic table.
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general knowledge matching match each of the items in the left column t…
1. L. Upper chambers of the heart 2. C. Blood vessels that supply blood to the myocardium 3. O. Electrical impulses slow here to allow blood to move from the atria to the ventricl…
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question 2 (1 point) if an atom gains electrons, why is it called a red…
When an atom gains electrons, its oxidation number decreases, which is why it is called a reduction.
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the correct name for h2so4 is a hydrosulfuric acid b sulfuric acid c hy…
B. sulfuric acid
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cardiovascular emergencies general knowledge matching match each of the…
1. L 2. C 3. O 4. G 5. N 6. K 7. H 8. M 9. B 10. D 11. F 12. I 13. J 14. A 15. E 16. P 17. G 18. E 19. F 20. C 21. A 22. D 23. B
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based on our discussion in class, at the molecular level, why is salt w…
Salt water contains dissolved salt ions that add mass to the same volume of water, increasing its density compared to fresh water.
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show all work!! (unit 4l frq) (3 points per question) 1. which element …
1. Lithium (Li) 2. Neon (Ne) 3. $1s^{2}2s^{2}2p^{6}3s^{2}3p^{3}$ 4. 5 5. Draw 5 dots around the symbol 'P'
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17. if a bottle of liquor is 80 proof, what % of alcohol does it contai…
17. B. 40% 18. C. Antibiotics
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an element that loses an electron, would have a ______ charge. positive…
A. positive
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what is the name for s²⁻? a sulfur b sulfide ion c sodium ion d sulfur …
B. sulfide ion
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1. ____ is the growing of crops for money on large farms with many mach…
1. C. Agribusiness 2. B. Brazil 3. D. cars 4. C. Chile 5. A. drugs
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the correct name for h₂so₄ is a sulfuric acid b hydrogen sulfate c hydr…
A. sulfuric acid