Chemie
Chemische Reaktionen, Stöchiometrie, Molekülstrukturen und Elementeigenschaften.
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which of the following is classified incorrectly based upon the descrip…
All are classified correctly.
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which of the following lists the types of mixtures in order of increasi…
solution < colloid < suspension
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oxygen is acting as an oxidizing agent in all of the following reaction…
C. $\ce{2 F2(g) + O2(g) → 2 OF2(g)}$
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oxygen is acting as an oxidizing agent in all of the following reaction…
C. $2 \text{F}_2(\text{g}) + \text{O}_2(\text{g}) ightarrow 2 \text{OF}_2(\text{g})$
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according to the solubility principle of \like dissolves like,\ which p…
a nonpolar molecule and a nonpolar molecule
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the extra terrestrials who banished the imperial unit system also got a…
3
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which is not an example of a solution? ○ a dental filling ○ chicken noo…
○ a dental filling
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the extra terrestrials who banished the imperial unit system also got a…
5
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the extra terrestrials who banished the imperial unit system also got a…
1
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how many 5s electrons does cr²⁺ have?
0
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part 3 of 3 in a can of a carbonated beverage such as soda, ____ would …
water
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in a can of a carbonated beverage such as soda, ___ would be considered…
$\text{CO}_2$
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oxygen is acting as an oxidizing agent in all of the following reaction…
C. $2\ \text{F}_2(\text{g}) + \text{O}_2(\text{g}) \to 2\ \text{OF}_2(\text{g})$
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determine the enthalpy of the reaction of $ce{hcl(g) + nano_{2}(s) -> h…
$\Delta H^\circ = +471.5\ \text{kJ/mol}$ (rounded to one decimal place, or $+471.55\ \text{kJ/mol}$ for precise value)
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oxygen is acting as an oxidizing agent in all of the following reaction…
# Explanation: ## Step1: Define oxidizing agent role An oxidizing agent gains electrons, so its oxidation number decreases. ## Step2: Find O oxidation number in reactants In $\tex…
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oxygen is acting as an oxidizing agent in all of the following reaction…
C. $2 \text{F}_2(\text{g}) + \text{O}_2(\text{g}) ightarrow 2 \text{OF}_2(\text{g})$
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you can resize the interactive by slowly dragging the dashed lines to t…
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁴
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you can resize the interactive by slowly dragging the dashed lines to t…
1s² 2s² 2p⁴
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you can resize the interactive by slowly dragging the dashed lines to t…
1s² 2s² 2p¹ (the third option)
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k shorthand: $1s^22s^22p^63s^23p^64s^2$ si shorthand: mn shorthand: zr …
- K: $[Ar]4s^1$ - Si: $[Ne]3s^23p^2$ - Mn: $[Ar]4s^23d^5$ - Zr: $[Kr]5s^24d^2$
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k shorthand: $1s^22s^22p^63s^23p^64s^1$ si shorthand: mn shorthand: zr …
- Sn Shorthand: $[\text{Kr}] 4d^{10} 5s^2 5p^2$ - Mn Shorthand: $[\text{Ar}] 3d^5 4s^2$ - Zr Shorthand: $[\text{Kr}] 4d^2 5s^2$
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ts elementary : building elements chapter pages tool: interactive perio…
1. Drag all orbitals (1s, 2s, 2p$_x$, 2p$_y$, 2p$_z$, 3s, 3p$_x$, 3p$_y$, 3p$_z$) to the "Drag objects here" area. 2. Assign electrons as follows: - Row 1 (1s): Fill the box with …
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electron configuration practice due date: chemistry e. in the space bel…
1) $1s^22s^22p^63s^1$ 2) $1s^22s^22p^63s^23p^64s^23d^6$ 3) $1s^22s^22p^63s^23p^64s^23d^{10}4p^5$ 4) $1s^22s^22p^63s^23p^64s^23d^{10}4p^65s^24d^{10}5p^66s^2$ 5) $1s^22s^22p^63s^2$ …
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a certain reaction is first order in $ce{n_{2}}$ and second order in $c…
Second row initial rate: $\boldsymbol{7.68 \times 10^4\ M/s}$ Third row initial rate: $\boldsymbol{2.63 \times 10^5\ M/s}$
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a certain reaction is first order in $ce{h_2}$ and first order in $ce{i…
Row 2 initial rate: $0.930\ \text{M/s}$ Row 3 initial rate: $0.689\ \text{M/s}$
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name type here date type here writing chemical formula & balancing chem…
1, 4, 1, 5
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name type here date type here writing chemical formula & balancing chem…
1, 2, 1, 1
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name type here date type here writing chemical formula & balancing chem…
1, 2, 1, 1
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name type here date type here writing chemical formula & balancing chem…
2, 6, 2, 3
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writing chemical formula & balancing chemical equations - slide 13 writ…
1. For $\boldsymbol{HCl + NH_3 ightarrow NH_4Cl}$: Coefficients: 1 (HCl), 1 (NH₃), 1 (NH₄Cl) Missing names: Hydrochloric acid (HCl), Ammonium chloride (NH₄Cl) 2. For $\boldsymbol{…
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name type here date type here writing chemical formula & balancing chem…
Coefficients (left to right): $1$, $2$, $1$, $1$ Missing names: - HCI: Hydrochloric Acid - $\text{FeCl}_2$: Iron(II) Chloride Balanced equation: $\text{Fe} + 2\text{HCl} ightarrow…
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name type here date type here writing chemical formula & balancing chem…
### First Equation: Coefficients: 1 (for $\text{N}_2$), 1 (for $\text{O}_2$), 2 (for $\text{NO}$) Missing names: Nitrogen (under $\text{N}_2$), Nitrogen monoxide (under $\text{NO}…
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a(n) ______ is an accurate representation of visible light. a. eye b. r…
C. electromagnetic spectrum
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a. write balanced molecular (not ionic) equations for each of the follo…
## Part a (Balanced Molecular Equations): A. $\text{HNO}_3 + \text{KC}_2\text{H}_3\text{O}_2 ightarrow \text{KNO}_3 + \text{HC}_2\text{H}_3\text{O}_2$ B. $3\text{Mg(ClO}_3\text{)}…
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question 10 1 pts in a wet cell battery what is the electrolyte? zinc c…
liquid acid
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experiment 6 ions in solution: electrolyte strength and electrical cond…
1. A. $\text{BaCl}_2$: Ionic B. $\text{SO}_2$: Covalent C. $\text{HBr}$: Covalent D. $\text{KNO}_3$: Ionic and Covalent E. $\text{PbI}_2$: Covalent F. $\text{H}_2\text{C}_2\text{O…
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question 7 1 pts gas particles moving through a pinhole refers to what …
Question 7: Effusion Question 8: Increasing the temperature
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match each of the equations with their reaction type. $2\\text{nabr} + …
- $2\text{NaBr} + \text{CaF}_2 ightarrow 2\text{NaF} + \text{CaBr}_2$: double replacement - $\text{SnO}_2 + 2\text{H}_2 ightarrow \text{Sn} + 2\text{H}_2\text{O}$: single replacem…
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which chemical symbols will complete the equation for this decompositio…
First blank: $\text{K}$, Second blank: $\text{I}$
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synthesis na + cl₂ decomposition 2nacl single replacement 2na + 2h₂o do…
- Synthesis $\ce{Na + Cl2}$ → $\boldsymbol{2NaCl}$ - Decomposition $\ce{2NaCl}$ → $\boldsymbol{2Na + Cl2}$ - Single Replacement $\ce{2Na + 2H2O}$ → $\boldsymbol{2NaOH + H2}$ - Dou…
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what are the products from a combustion reaction always water only carb…
Carbon dioxide and water only
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9) a granite batholith is exposed at the surface, and over thousands of…
9) D. Unloading 14) C. It increases the rate of both mechanical and chemical weathering. 7) (Correct option not shown in the image, but the process is differential weathering)
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4) mechanical weathering changes the chemical composition of the parent…
4) False 11) True 6) The water carries weathered material downstream, where it is primarily deposited, building up features like deltas.
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12) granite, which is primarily composed of quartz and feldspar, genera…
12) True 5) Transported soil 3) Bedrock
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15) which factor has the most direct impact on increasing the rate of c…
C. High temperatures and abundant moisture
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13) which of the following landforms is created primarily through the p…
13) C. A river valley or canyon cut by moving water 2) Hydrolysis
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question 1 1 pts which of the following is not a principle of kmt? part…
Question 1: Particles are soft, squishy spheres. Question 2: Helium
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question 7 1 pts two firms, a and b, each currently dump 60 tons of che…
5000
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inquizitive chapter 2. methods 2.1 define key terms essential to sociol…
After seeing her dog eat chocolate and later get sick, a child tells a playmate that chocolate is bad for dogs. - inductive reasoning A dog, having gotten a bite of chocolate cake…
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select the dependent clause. frozen foods may lose water molecules and …
unless they are wrapped tightly
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of a chemical reaction. 32. list several reasons why the actual yield f…
32. - Side reactions form unwanted products - Reactants may not fully react - Product is lost during collection/purification - Starting materials contain impurities 33. Percent yi…
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8. which change can be reversed by physical means? a. burning wood b. r…
c. Dissolving sugar
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reacts with hcl. 29. zinc reacts with iodine in a synthesis reaction: $…
a. $610.3\ \text{g}$ (rounded to 4 significant figures) b. $84.5\%$ (rounded to 3 significant figures) --- ### Problem 30
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which proportion could you use to convert 7 liters to milliliters?$\fra…
Valid proportion: $\frac{1,000 \text{ milliliters}}{1 \text{ liter}} = \frac{? \text{ milliliters}}{7 \text{ liters}}$ 7 liters = 7000 milliliters
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name_____ period_____ date_____chapter 7 review worksheetcalculate the …
1. $98\ \text{g/mol}$ 2. $98\ \text{g/mol}$ 3. $111\ \text{g/mol}$ 4. $100\ \text{g/mol}$ 5. $160\ \text{g/mol}$ 6. $\approx 2.39\ \text{mol}$ 7. $\approx 0.48\ \text{mol}$ 8. $\a…
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23. the equilibrium constant, $k_c$, is 54.3 at 430 $^circ$c for the re…
A. 0.107 M --- ### Question 24
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chemical-emitting gases or solids from interior products and materials …
that have low levels of volatile organic compounds (VOCs)
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name: jackson alexander report: empirical formula data + calculations m…
Empirical formula of hydrate: $\text{CuCl}_2 \cdot 7\text{H}_2\text{O}$
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bend and stretch = structure and function of designed materials student…
Evidence: The C-F bond (485 kJ/mole) has higher bond energy than the C-H bond (413 kJ/mole). Reasoning: Stronger C-F bonds in PTFE require more energy to break, so PTFE is stable …
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jocelyn and her friends put some raisins, hazelnuts, almonds, and peanu…
a mixture
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part 1. complete each question using your bag of candy. show all work t…
1. 12 2. (Completed Table 1 below) 3. (Completed Table 1 below) 4. Orange, $\ce{^{7.01}O}$ (Orange-7.01) 5. 41% (highest percentage abundance) 6. ~5.78 (predicted average atomic m…
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a student selects two identical glasses, labels them p and q, and fills…
Sugar dissolves completely in glass P, and sand settles at the bottom of glass Q.
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packing peanuts are commonly used as shipping material. some are manufa…
☑ Cornstarch Evidence: Cornstarch has polar -OH groups in its molecular structure that form hydrogen bonds with water, making it water-soluble and biodegradable, so it does not co…
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three students are mixing the same type of solute in 500 ml of water. j…
Hunter → Jessica → Larry
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oil and water placed in a jar will separate. even when shaken and mixed…
Oil and water have a low solubility because they have separate chemical properties.
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naomi has increased the pressure on a solution of liquid and gas in a c…
increase the amount
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four solutes are added to a solvent. all solutes have the same mass and…
10 mm²
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ntinued)organize the information on atomic mass to complete the outline…
1. Protons (positively charged, ~1 amu mass) 2. Neutrons (neutral, ~1 amu mass) 3. Accounts for 99.9% of total atomic mass
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ii. prelab questions (answer questions in your notebook): 1. what is th…
1. $2\text{Mg} + \text{O}_2 ightarrow 2\text{MgO}$ 2. Limiting reactant: $\text{Mg}$; Excess reactant: $\text{O}_2$. Explanation: Atmospheric oxygen is infinitely abundant compare…
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maureen adds a spoonful of salt to a glass of cold water. which of the …
stirring the mixture
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read the list below: 1. sugar 2. pepper 3. lemon juice 4. carbon dioxid…
2 and 6 only
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explain to the people of westfield how the rust in their water formed.
Rust in your water forms through a chemical reaction involving the iron in your water pipes, oxygen, and water: 1. Iron from pipes reacts with dissolved oxygen and water to form i…
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3. a new childrens toy company is designing its logo. select the respon…
○ They should consider colors that are red and yellow to set the mood of energy, excitement, and youth.
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phosphorus atomic number atomic mass number of protons number of electr…
### Phosphorus | Category | Value | |------------------------|-------| | Atomic Number | 15 | | Atomic Mass | 31 | | Number of Protons | 15 | | Number of Electrons | 15 | | Number…
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boron atomic number atomic mass number of protons number of electrons n…
### Boron Table: | Category | Value | |------------------------|-------| | Atomic Number | 5 | | Atomic Mass | 11 | | Number of Protons | 5 | | Number of Electrons | 5 | | Number …
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question 1 of 15 which sentence describes a villanelle? a. it has 14 li…
C. It uses three-line stanzas and often repeats lines.
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questions to address in your conclusion: 1. what is the expected mole r…
The expected mole ratio of chlorine to magnesium is $\frac{2}{1}$ (or 2:1).
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lab #4 – empirical formula of a compound repo. name: anarec sasmiento l…
Average ratio of moles of chlorine to moles of magnesium: $18.9$ Empirical formula of magnesium chloride: $\text{MgCl}_{19}$ (Note: This non-standard result suggests possible expe…
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date trial 1 trial 2 mass of evaporating dish 46.0618g 45.5867g mass of…
Trial 1: 18.84 Trial 2: 18.96
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which statement best explains how the aswan high dam contributes to pol…
The dam affects the soil, which causes farmers to use fertilizers that create pollution.
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what is the ph for a solution with $oh^- = 8.9 \\times 10^{-9}$ m? resp…
$5.9\text{E}0$
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question 13 mark as: none calculate $\\text{h}_3\\text{o}^+$ for a solu…
For Question 13: $5\text{E-5}$ For Question 14: $5\text{E-6}$
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question 7 mark as: none match each compound from the premise column wi…
- $\text{H}_2\text{O}$ = both amphiprotic and amphoteric - $\text{MnO}_2$ = amphoteric only - $\text{SnO}$ = amphoteric only - $\text{HS}^-$ = both amphiprotic and amphoteric
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question 6 mark as. none calculate the hydroxide ion concentration for …
3.6E-10
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method 1: convert $oh^-$ to $h_3o^+$ first, then insert $h_3o^+$ direct…
Question 15.16: $6.0\text{E}0$ Question 15.17: $6.0\text{E}0$
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in precision from two to four decimal places (figure 15.9) the fact tha…
Question 15.14: $5\text{E-5}$ Question 15.15: $5\text{E-6}$
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match each solution with its correct ph description. drag and drop opti…
soap = basic tea = acidic toilet bowl cleaner = acidic orange juice = acidic drain clog remover = basic
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question 15.9 mark as: none rank the following acids by the amount of $…
1. 1.6 M HCl 2. 1.2 M HBr 3. 1.2 M HF
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7. valence electrons are important because they help determine an eleme…
B. chemical behavior
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according to the reading, this law made it illegal to obstruct the draf…
First question: a. The Espionage Act Second question: d. The discovery of the Zimmerman telegrams
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question 15.8 mark as: none match each compound from the premise column…
- $\text{H}_2\text{O}$ = both amphiprotic and amphoteric - $\text{MnO}_2$ = amphoteric only - $\text{SnO}$ = amphoteric only - $\text{HS}^-$ = both amphiprotic and amphoteric
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calculate the hydroxide ion concentration for a solution with $h_3o^+_{…
3.6E-10
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compound: p₄c mass of compound: 67.20g molar mass: \tconvert mass to mo…
| Compound | Molar Mass (g/mol) | Moles | |----------|---------------------|-------| | $\text{P}_4\text{C}$ | $135.89$ | $0.495$ | | $\text{Mg}_3(\text{PO}_4)_2$ | $262.87$ | $0.1…
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question 15.1 mark as: none what is the name of the compound present in…
Water (or $\text{H}_2\text{O}$)
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measuring moles lab you will visit 8 weighing stations. make note of ea…
1. **Carbon** - Molar Mass: $12.01\ \text{g/mol}$ - Moles: $10.86\ \text{mol}$ 2. **Silicon** - Molar Mass: $28.09\ \text{g/mol}$ - Moles: $0.728\ \text{mol}$ 3. **NaCl** - Molar …
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15) ___ag + ___f₂ → ___agf 16) ___k₂s + ___sr(clo₃)₂ → ___kclo₃ + ___sr…
15) $2\text{Ag} + \text{F}_2 ightarrow 2\text{AgF}$ 16) $\text{K}_2\text{S} + \text{Sr(ClO}_3\text{)}_2 ightarrow 2\text{KClO}_3 + \text{SrS}$ 17) $2\text{Na} + \text{ZnCO}_3 ight…
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heat transfer in earths systems understanding heat movement the sun pow…
1. Radiation 2. Conduction
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which item is not used by lady macbeth as a symbol in lines 58-67? sele…
1. b. flower 2. b. She wants to be in charge of tonight's major scheme.
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Question was provided via image upload.
11) $2\text{Li} + 2\text{H}_2\text{O} ightarrow 2\text{LiOH} + \text{H}_2$ 12) $2\text{HgO} ightarrow 2\text{Hg} + \text{O}_2$ 13) $3\text{Ca(NO}_2\text{)}_2 + 2\text{H}_3\text{PO…
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5. biomass energy is derived from what? nuclear waste byproducts. organ…
Organic materials like plants.