Chemistry
Chemical reactions, stoichiometry, molecular structures, and element properties.
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the three particles that make up atoms are o positives, negatives, and …
protons, neutrons, and electrons.
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the sweet slice pie shop sells organic pies with locally - sourced ingr…
\(\frac{1}{2}\)
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write the names for the following covalent compounds: 9) p4s5 10) o2 11…
9) Tetraphosphorus pentasulfide 10) Oxygen 11) Selenium hexafluoride 12) Disilicon hexabromide 13) Sulfur tetrachloride 14) Carbon tetrahydride (or Methane) 15) Diboron silicide 1…
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what is the value of the azimuthal quantum number (l) for an electron i…
3
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perform the following calculation. make sure to pay attention to signif…
$1.63\times10^{-2}$
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what is the principal quantum number that designates the principal elec…
\( n \)
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neutrons electrons protons spinning around the nucleus of an atom are
electrons
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naming covalent compounds worksheet write the formulas for the followin…
1) $\text{SbBr}_3$ 2) $\text{B}_6\text{Si}$ 3) $\text{ClO}_2$ 4) $\text{HI}$ 5) $\text{IF}_5$ 6) $\text{N}_2\text{O}_3$ 7) $\text{NH}_3$ 8) $\text{PI}_3$
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what is the value of the azimuthal quantum number (l) for an electron i…
0
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give the n and i values for the following orbitals: 4p
\( n = 4, l = 1 \)
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how many protons does carbon have?*
6
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12 question (1 point) open ebook section 1.7 perform the following calc…
$1.50e - 5$
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how many electrons can the d sublevel hold? 14 10 2
10
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according to the pauli exclusion principle, what is the maximum number …
2
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give the n and i values for the following orbitals: 6s n = 6, l = 1 n =…
\(n = 6\), \(l=0\) (the third option \(n = 6,l = 0\))
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according to the aufbau principle, in what order do electrons occupy or…
Lowest energy first
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which of the following makes up a molecule of water? one atom of hydrog…
two atoms of hydrogen and one atom of oxygen
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name the orbitals described by the following quantum numbers: n = 3, l …
\(3d\)
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which of the following makes up a molecule of water? o one atom of hydr…
One atom of oxygen and two atoms of hydrogen make up a water molecule. So the answer is "two atoms of hydrogen and one atom of oxygen".
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what is the value of the magnetic quantum number (ml) for an electron i…
All of the values $- 1$, $0$, and $1$ are possible for the magnetic quantum number ($m_l$) of an electron in the $3p$ orbital.
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which quantum number describes the shape of a given orbital? ml n l
The quantum number that describes the shape of a given orbital is \( l \) (the angular momentum quantum number).
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multiple choice 1 point what property of water makes it an excellent so…
4. Its polarity and ability to form hydrogen bonds 5. The polar bonds are arranged symmetrically, so dipoles cancel
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1 multiple choice 1 point which factor primarily determines whether a b…
1. The difference in electronegativity between bonded atoms 2. Larger atoms have valence electrons farther from the nucleus, which can reduce bond strength and affect polarity 3. …
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according to the aufbau principle, which orbital is filled after 4s? 4d…
\(4p\)
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following the aufbau principle, which orbital is filled after 3p? 3d 4p…
\(4s\)
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write the 4 quantum numbers of the last electron added of the following…
\(n = 2\), \(l = 1\), \(m_{l}=1\), \(m_{s}=-\frac{1}{2}\) which corresponds to \(2,1,1,-\frac{1}{2}\) (the second option in the given choices)
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ice floats on water because o of cohesion. o ice has a lower density th…
ice has a lower density than water.
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the famous hope diamond at the smithsonian national museum of natural h…
Part 1: \(0.758\) moles Part 2: \(4.57\times 10^{23}\) atoms
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2. write the names for the following compounds. (a) cf₄ (b) nh₃ (c) pbr…
(a) Carbon tetrafluoride (b) Ammonia (c) Phosphorus tribromide (d) Ozone (e) Fluorine gas (f) Carbon disulfide (g) Dinitrogen tetroxide (h) Hydrogen peroxide (i) Carbon monoxide (…
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which of the following gases diffuse more slowly than oxygen? c₂h₂ no n…
First question: \(N_2O\) Second question: \(70.9\space g/mol\) Third question: \(Cl_2\)
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determine the oxidation number (o.n.) of each element in these compound…
a) \(Ca:+2\), \(O:-2\) b) \(K:+1\), \(N:+5\), \(O:-2\) c) \(H:+1\), \(S:+6\), \(O:-2\) d) \(Ca:+2\), \(C:+4\), \(O:-2\) e) \(N:0\) f) \(H:+1\), \(O:-2\) g) \(N:+5\), \(O:-2\)
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06 question (3 points) open ebook section 2.6 the common pain relievers…
1. \(4.18\times10^{20}\) 2. \(4.98\times10^{20}\) 3. \(2.98\times10^{20}\)
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05 question (1 point) a 1.00 ml sample of seawater is determined to con…
\(4.92\times 10^{-9}\)
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fill in the statements below that describe how kinetic molecular theory…
- **Boyle's Law**: decreases; increases; increase - **Dalton's Law**: independence; sum of the partial pressures of each gas - **Gay - Lusacs Law**: increase; more; increasing - *…
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what is the principal quantum number that designates the principal elec…
\( n \)
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what is the value of the azimuthal quantum number (l) for an election i…
\(3\)
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1. magnesiums atomic number is 12 and its mass number is 24. magnesium …
C. number of valence electrons
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1. magnesiums atomic number is 12 and its mass number is 24. magnesium …
Protons: 12, Electrons: 12, Neutrons: 12
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what is the value of the magnetic quantum number (ml) for an electron i…
\(-1,0,1\)
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02 question (4 points) how many atoms of iron are there in 2.01 moles o…
- Part 1: \(1.21\times 10^{24}\) atoms Fe - Part 2: \(1.21\times 10^{24}\) atoms Fe - Part 3: \(3.63\times 10^{24}\) atoms Fe - Part 4: \(2.42\times 10^{24}\) atoms Fe
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what is the value of the magnetic quantum number (ml) for an electron i…
\(-1\), \(0\), \(1\)
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how many electrons can the d sublevel hold? 14 10 6 2
10
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give the n and i values for the following orbitals: 6s
$n = 6$, $l=0$ (the fourth option: $n = 6, l = 0$)
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according to the aufbau principle, which orbital is filled after 4s?
\(4p\)
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according to the aufbau principle, which orbital is filled after 4s?
\(4p\)
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write the 4 quantum numbers of the last electron added of the following…
\(2,1,1,-\frac{1}{2}\)
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what is the maximum number of electrons that can occupy the 3d sublevel…
10 (the third option)
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according to the pauli exclusion principle, what is the maximum number …
2
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what is the value of the azimuthal quantum number (l) for an electron i…
\(0\)
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according to the aufbau principle, in what order do electrons occupy or…
Lowest energy first
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give the n and i values for the following orbitals: 4p
\(n = 4\) and \(l = 1\) (the fourth option \(n = 4,l=1\) is correct)
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name: gabriel bait surname: idk balancing chemical equations (worksheet…
a) Chemical equation b) Reactants c) Products d) Arrow ($ ightarrow$)
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following the aufbau principle, which orbital is filled after 3p?
\(4s\)
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19. which fbi is the most deadly? a. botulism b. rotavirus c. hepatitis…
19. a. Botulism 20. c. Trichinosis 21. a. Salmonellosis 22. a. True 23. c. Food
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q.5. balance the following chemical equations. a) __alcl₃ + __h₂o → __a…
a) \(1\ AlCl_3 + 3\ H_2O ightarrow 1\ Al(OH)_3 + 3\ HCl\) b) \(1\ C_3H_8 + 5\ O_2 ightarrow 3\ CO_2 + 4\ H_2O\) c) \(2\ Al + 3\ FeO ightarrow 1\ Al_2O_3 + 3\ Fe\) d) \(1\ S_8 + 12…
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question 3 (1 point) what is the role of ninhydrin in this lab? a) to h…
C. To react with the amino acids to produce a colored spot
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question 2 (1 point) the larger the rf, the more soluble the amino acid…
True
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question 1 (1 point) when you are finished with the chromatogram, the s…
B. False
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name: date: worksheet #2 - calculating protons, electrons, and neutrons…
| Element Symbol | Atomic Number | Atomic Mass | Protons | Electrons | Neutrons | |---|---|---|---|---|---| | \(H\) | \(1\) | \(1\) | \(1\) | \(1\) | \(0\) | | \(He\) | \(2\) | \(…
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you see a faint mist hovering above a work area. could this be a visual…
Yes
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a safety data sheet (sds) includes information on the properties of a c…
Physical and health hazards
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as an employee, who is supposed to provide training on the chemicals yo…
Employer
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directions: circle the letter in front of the word or words that best c…
1. d. by comparing their spectra with known spectra here, on Earth. 2. d. wire. 3. c. yellow. 4. d. violet. 5. b. eliminate the yellow light.
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4. maya and jordan measured the total mass before and after mixing the …
D. The total mass stayed the same, showing the Law of Conservation of Mass.
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protons, neutrons, and electrons practice worksheet calculating the num…
| Name of Element | Element Symbol | Mass Number | Atomic Number | Protons | Neutrons | Electrons | |---|---|---|---|---|---|---| | Boron | B | 11 | 5 | 5 | 6 | 5 | | Sodium | Na …
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identifying purposes of speeches read the descriptions of speeches and …
- an explanation of why more windmills should be built: persuade - a live comedy routine: entertain - a lecture about chemical reactions: inform - a TV show that explains how to c…
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if the law of conservation says that matter (stuff) is conserved (prote…
10
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multiple - choice question are chemical changes reversible? yes they ca…
Yes they can be reversed with another chemical change.
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when we change a phase of matter into another phase, we can change it b…
True
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if the law of conservation says that matter (stuff) is conserved (prote…
10
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i. testing concepts directions: in the blank at the left, write the let…
1. a. Kinetic 2. d. Work 3. b. Potential 4. a. less 5. b. chemical potential energy 6. d. gravitational potential energy 7. c. simple machines 8. a. Joules 9. d. Mechanical advant…
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do now: the periodic table (11th grade chemistry) name: madison clarke …
1. The number of protons in the nucleus of an atom of that element. 2. The number of protons determines the element's identity (each element has a unique number of protons). 3. At…
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where did the oxygen molecules come form that combined with the iron to…
the air around us
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what is the chemical formula for this compound? fe₃o fe₂o₃ fe₃o₂ feo₂ r…
\(Fe_2O_3\)
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what are the differences between an atom and a molecule? molecules are …
Molecules are bigger than atoms, Molecules are formed by atoms.
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what is a reactant in the the chemical reaction that caused the teacher…
Iron
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what are the new substances that are formed after a chemical reaction? …
Products
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what do the bubbles and the color change in this demonstration indicate…
There is a chemical change occurring.
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what are reactants? the chemicals that you have at the start of a recti…
The chemicals that you have at the start of a reaction.
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calculate the volume of 50 grams of gold. (hint: the density of gold is…
The volume of 50 grams of gold is approximately $2.59$ cm³.
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what is the mass of a liquid that has a density of 3.2 g/ml and a volum…
The mass of the liquid is \(80\space g\).
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1. both mixtures and compounds are made of two or more different substa…
c. A mixture is two or more substances mixed physically but not chemically. ### Question 2
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what is the density of a box that has a mass of 35g and a volume of 17c…
\(D\approx2.1g/cm^{3}\) (the value \(2.06\) is approximated to \(2.1\) as in the options provided in the original problem setup)
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is when one relates similar objects to schemas one is already familiar …
D. Assimilation
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drag each tile to the correct box. match each of the four barriers of i…
- Changes in pH and temperature → Physiological barrier. - Signaling to macrophages → Inflammatory barrier. - Secretion of sweat, saliva, and tears → Anatomical barrier. - Secreti…
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identifying reaction types & balancing equations step 1: name the type …
1. \(1\text{ N}_2 + 3\text{ H}_2 ightarrow2\text{ NH}_3\) 2. \(2\text{ KClO}_3 ightarrow2\text{ KCl}+3\text{ O}_2\) 3. \(2\text{ NaCl}+\text{F}_2 ightarrow2\text{ NaF}+\text{ Cl}_…
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a student is conducting an experiment to observe how different climates…
Rocks near the equator weather rapidly because of high temperatures and frequent rainfall, which enhance chemical weathering.
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a geologist is studying the process of soil formation in a region with …
High levels of volcanic ash deposition.
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13. the renaissance saw a revival of interest in which of the following…
A. Symmetry and mathematical principles in art
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part iii: matching vocabulary match each of the following terms to the …
1. h. Enzyme 2. a. Adhesion 3. f. Covalent 4. b. Atom 5. d. Cohesion 6. g. Element 7. e. Compound 8. h. Enzyme
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1a. halfway through milas run, when the music stopped playing, was ther…
Mia's phone started playing music again when plugged into the battery pack because the battery pack supplied additional electrical - chemical energy. The phone had some residual e…
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hydrogen bonds are intermolecular forces in which a hydrogen covalently…
Hydrogen bonding is present between hydrogen fluoride (HF) molecules.
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the diameter of a hydrogen atom is about 1.04x10^-10 meters. a protein …
\(2.08\times 10^{-7}\) meters
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chemistry a scientist tested how fast a chemical reaction occurred at d…
linear
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each layer of earth has different physical and chemical properties. thi…
Composition of the layers.
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predict what type of van der waals interactions occur between molecules…
- \(O_2\): London dispersion forces. - \(SCl_2\): Dipole - dipole interactions and London dispersion forces. - \(CH_4\): London dispersion forces.
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a. carbon: 1. atomic number = 2. atomic mass number = 3. number of prot…
- **Carbon**: 1. \(6\) 2. \(12\) 3. \(6\) 4. \(6\) 5. \(6\) 6. \(4\) 7. \(0\) - **Chlorine**: 1. \(17\) 2. \(35\) 3. \(17\) 4. \(18\) 5. \(17\) 6. \(7\) 7. \(-1\) - **Chemical For…
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a reaction that produces carbon dioxide gas is that between an acid and…
The vapor - pressure of \(CO_2\) is \(719.8\) torr. The mass of \(CaCO_3\) is \(2.12\space g\)
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a 5.73 - l flask at 25°c contains 0.0388 mol of n₂, 0.147 mol of co, an…
For the first problem: \(P_{N_2}\approx0.166\space atm\) \(P_{CO}\approx0.631\space atm\) \(P_{H_2}\approx0.345\space atm\) \(P_{total}\approx1.14\space atm\) For the second probl…
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what is the molar mass of a gas if 0.0494 g of the gas occupies a volum…
\(30.0\ g/mol\) ### Second Question