Answers
Answer:
Explanation:
That's almost the exact definition of an ecosystem.
Hello!
I think an ecosystem because they are a biological community of interacting organisms and their physical environment. And that’s what an ecosystem is and it relates to your question.
I hope I answered in time!
Good luck!
~ Destiny ^_^
Related Questions
1. Including a full-wave rectifier in an AC circuit will yield a/an _______ current.
A. continuous alternating
B. continuous direct
C. intermittent alternating
D. intermittent direct
2. A transmission system at a radio station uses a/an _______ to convert a direct current into a high-frequency alternating current.
A. modulator
B. oscillator
C. demodulator
D. transmitting antenna
3. Combining which of the following substances with germanium will cause the germanium to emit free electrons?
A. Indium
B. Gallium
C. Bismuth
D. Aluminum
6. Which of the following does not affect the electrical resistance of a body?
A. Bodies directly surrounding the body
B. Length of the body
C. Temperature of the body
D. Material composing the body
8. Which of the following is an accurate description of the relationship demonstrated in Ohm's Law?
A. The resistance (ohms) divided by the current (amperes) equals the electric potential (volts).
B. The electric potential (volts) divided by the current (amperes) equals the resistance (ohms).
C. The electric potential (volts) multiplied by the resistance (ohms) equals the current (amperes).
D. The electric potential (amperes) divided by the resistance (ohms) equals the current (volts).
11. A series circuit contains a generator, two devices, and connecting wires. The resistances of the two devices are 15 ohms and 10 ohms. The voltage supplied by the generator is 75 V. What will be the voltage drop in the device with 10 ohms of resistance?
A. 3 V
B. 45 V
C. 25 V
D. 30 V
13. If a bar magnet's neutral region is broken in two, what will most likely occur?
A. Each of the two segments of the original bar magnet will have a north and south pole.
B. The segment that's longer will have a north and south pole.
C. One segment will have only a north pole, the other segment will have only a south pole.
D. Neither segment will have a north or south pole
16. Which of the following would decrease the resistance to the flow of an electric current through a body?
A. Using a conductor with a smaller cross section
B. Lengthening the conductor
C. Shortening the conductor
D. Heating the conductore
each question is worth 5 points I will give brainliest answer
Answers
1) B) continuous direct.
2) B) oscillator.
3) C) Bismuth.
6) I dont know this one sorry :/
8) B) The electric potential (volts) divided by the current (amperes) equals the resistance (ohms).
11) D) 30 V
13) A) Each of the two segments of the original bar magnet will have a north and south pole.
16) C) Shortening the conductor.
In a solution of water and table salt, what is the table salt?
Answers
the salt is the solute (and the water is the solvent) i hope this answers your question lol
In a water and table salt solution, table salt is the solute. Sodium chloride (NaCl) dissolves in water forming spheres of hydration, and its concentration in the solution can vary.
In a solution of water and table salt, table salt is referred to as the solute. The process of making a saline water solution involves dissolving sodium chloride (NaCl), commonly known as table salt, into water, which acts as the solvent. This leads to the formation of what are known as spheres of hydration around the ions. Sodium chloride is a compound composed of the elements sodium and chlorine, and it is vital for various bodily functions, such as nerve conduction and fluid balance. Ordinary table salt has a uniform and definite composition, making it a pure substance; however, the saline solution's composition can vary depending on the amount of salt dissolved in water, so it is not considered a pure substance.
HELP ASAP PLEASE!!!
Write the reaction between hydrochloric acid and sodium hydroxide. Identify the reactants and they products of the reaction.
Answers
HCl + NaOH -> NaCl + H2O
reactants: hydrochloric acid HCl
sodium hydroxide NaOh
products: sodium chloride (table salt) NaCl
dihydrogen monoxide (water)
H2O
The structure of the periodic table is based on the distribution of A- protons B- electrons in each element. The elements are arranged in horizontal A- periods B- groups Vertical A- periods B- groups
Answers
Answer: B- electrons, A- periods, B- groups
Answer: The correct answer is Option A, Option A and Option B.
Explanation:
Elements in a periodic table are distributed in 7 Periods and 18 Groups.
The elements are distributed on the basis of increasing atomic numbers. Atomic number is defined as the number of protons that are present in an element.
Thus, the elements in the periodic table are distributed based on the distribution of protons.
The elements are arranged in vertical columns known as Groups and in horizontal rows known as Periods.
Hence, the correct answer is Option A, Option A and Option B.
Which of the following descriptions accurately describes Boyle’s law?
How well a gas dissolves in a liquid such as blood depends on both its partial pressure and its solubility.
The pressure of gas in your lungs is inversely proportional to the volume in your lungs.
The partial pressure of a gas in the air you breathe in is equal to the total atmospheric pressure
Answers
The pressure of gas in your lungs is inversely proportionate to the volume in your lungs.
The description that accurately describes Boyle's law is the pressure of gas in your lungs is inversely proportional to the volume in your lungs. Option C is correct.
Boyle's law states that at a constant temperature, the pressure of a gas is inversely proportional to its volume. This means that if the pressure of a gas increases, the volume of the gas will decrease, and vice versa.
In the lungs, the pressure of the air is determined by the amount of air that is in the lungs. When you breathe in, the volume of your lungs increases, which decreases the pressure of the air in your lungs. When you breathe out, the volume of your lungs decreases, which increases the pressure of the air in your lungs.
Boyle's law is an important principle in the study of gases and is used in many different applications, such as scuba diving and meteorology. Option C is correct.
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What type of intermolecular forces are present in liquid methanol?
Answers
Answer:
Hydrogen bonds
Explanation:
Hydrogen bonds are bonds formed in polar molecules in which an hydrogen atom is directly joined to a highly electronegative atom such as oxygen or nitrogen or fluorine.
A hydrogen bond is just an electrostatic attraction between a hydrogen atom of one molecule and the electronegative atom of a neighboring molecule.
Methanol has a formula of CH₃OH and the hydrogen bond is between the H and O.
Liquid methanol exhibits hydrogen bonding, dipole-dipole interactions, and dispersion forces. The primary intermolecular force is hydrogen bonding due to the -OH group present in methanol molecules. These forces contribute to methanol's relatively high boiling point.
Liquid methanol exhibits several types of intermolecular forces. The primary intermolecular force in methanol is hydrogen bonding.
Methanol molecules contain an -OH group, where the hydrogen atom is bonded to a highly electronegative oxygen atom.
This allows each methanol molecule to form hydrogen bonds with other methanol molecules. Additionally, methanol exhibits dipole-dipole interactions due to its polar nature.
Lastly, dispersion forces (also known as London dispersion forces) are present in all molecular substances, including methanol, although they are generally weaker compared to the other two types of forces.
Hydrogen Bonding: The hydrogen atom of one methanol molecule forms a hydrogen bond with the oxygen atom of a neighboring methanol molecule.Dipole-Dipole Interactions: Methanol's polar molecules align so that the positive end of one molecule is attracted to the negative end of another.Dispersion Forces: These are weak forces arising from temporary fluctuations in electron density.Understanding these intermolecular forces helps explain why methanol has a relatively high boiling point compared to non-polar substances of similar molecular weight.
In a chemical equation the arrow (indicating a reaction) points in which direction
Answers
How would the volume of helium in a balloon be affected if the balloon was placed in a room where air temperature is lower?
Answers
Answer:
The volume will decrease.
Explanation:
According to Charles' Law, the volume of a gas is directly proportional to its temperature.
V = kT
Thus, if T decreases, V decreases.
Explanation:
So,when balloon filled with helium gas was placed in lower temperature we will observe that the volume of the helium gas inside the helium will decrease due to which size of the balloon will also get decreased.
This is because volume is directly proportional to the temperature of the gas at constant pressure and number of moles. And this law is known as Charles law of
[tex]V\propto T[/tex] (At constant pressure and number of moles)
Binary molecular compounds are composed of two ______ elements
Answers
Answer:
Non-metal
Explanation:
Molecular compounds are formed through covalent bonds. Covalent bonds occur between non-metals only and they form what we call molecules, hence the name molecular compound.
An example of a molecular compound is carbon monoxide or CO. Carbon is a non-metal and oxygen is a non-metal, so you know that they form a covalent bond.
That's the difference with ionic compounds. Ionic bonds form ionic bonds and these bonds occur between a metal and a non-metal.
Binary molecular compounds are made of two nonmetallic elements and have specific naming conventions such as prefixes to denote the number of atoms.
Binary molecular compounds are composed of two nonmetallic elements. They are named using a specific nomenclature that includes prefixes to indicate the number of atoms of each element present in the compound. For example, carbon dioxide, CO₂, is a binary molecular compound consisting of one carbon atom and two oxygen atoms.
12. What element is this? How do you know?
For question #13, use the following picture:
Answers
Construct a three-step synthesis of 3-bromocyclopentene from cyclopentane. Drag the appropriate items into the bins. Note that each bin should hold only one item
Answers
Answer:
How about this?
Explanation:
(1) Halogenation of an alkane
Reaction with Br₂ in the presence of UV light to give bromocyclopentane.
(2) Dehydrohalogenation
Reaction with hot alcoholic KOH to give cyclopentene.
(3) Allylic bromination
Reaction with N-bromosuccinimide and a drop of HBr(aq) gives
3-bromocyclopentene.
A three-step synthesis of 3-bromocyclopentene from cyclopentane is as follows:
(1) Halogenation of an alkane
(2) Dehydrohalogenation
(3) Allylic bromination
What is a halogenation reaction?Generally, halogenation is the reaction of a halogen with an alkane in which the introduction of halogen atoms occurs into the organic molecule by an addition reaction or by a substitution reaction.
(1) Halogenation of an alkane
Halogenation of an alkane produces a hydrocarbon derivative in which one or more halogen atoms have been substituted for hydrogen atoms.Reaction with Br₂ in the presence of UV light to give bromocyclopentane.(2) Dehydrohalogenation
Dehydrohalogenation is an elimination reaction which removes a hydrogen halide from a substrate.Reaction with hot alcoholic KOH to give cyclopentene.(3) Allylic bromination
NBS reacts with trace amounts of HBr to produce a low enough concentration of bromine to facilitate the allylic bromination reaction.Reaction with N-bromosuccinimide and a drop of HBr(aq) gives 3-bromocyclopentene.Hence, the three steps are halogenation, dehydrohalogenation, and allylic bromination.
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Which of the following can produce the most energy?
A. Burning coal
B. fission
C. Fusion
D. Tannerite
Answers
Answer:
The answer is C. Fusion.
Answer:
c. Fusion
Explanation:
What is meant by the half-life of a radioactive substance
Answers
Answer:
The half-life of a radioactive substance is the time the substance takes to be reduced by half of its initial amount as a consequence of decay.
Explanation:
The half-life of a radioactive substance is the time the substance takes to be reduced by half of its initial amount as a consequence of decay.It is a characteristic constant.It is known that the decay of a radioactive isotope isotope obeys first order kinetics.Also, it is clear that in first order decay the half-life time is independent of the initial concentration.A student is performing an experiment to study thermodynamics. The student mixes citric acid and sodium bicarbonate in a calorimeter to determine the energy released in the chemical reaction. In one paragraph, identify the system, the surroundings, and the reasons for using calorimetry in this type of experiment.
Answers
Explanation :
In thermodynamics, a system is region or part of space which is being studied and observed while the surrounding is the region or space around the system which interacts with the system.
Here in the experiment ,system which is observed is reaction or changes when citric acid and sodium bicarbonate are mixed together. And the mixing is carried out in the calorimeter which serves as a surrounding around the system.
The reason behind the using the calorimeter is measure the energy change occurring during the reaction.
The changing of substances to other substances by the breaking of bonds in reactants and the formation of bonds in products.
Answers
Answer:
Definition of chemical change or reaction.Explanation:
The changing of substances to other substances by the breaking of bonds in reactants and the formation of bonds in products is the definition of chemical change or reaction.
Chemical reactions or cahnges are the transformation of pure substances, compounds or elements, into other substances by the breaking of some bonds adn the formation of other bonds.
The chemical reactions are represented by chemical equations with the reactants in the left side and the products in the right side, connected by the use of arrows.
For example, the chemical equation CH₄ (g) + O₂(g) → CO₂(g) + H₂O(g) represents the combustion reaction (chemical change) of methane (CH₄) with oxygen (O₂).
The products of the reaction are carbon dioxide (CO₂) and water (H₂O) which are the new substances formed by breaking the chemical bonds in CH₄ and O₂ and the formation of the bonds in the new molecules (CO₂ and H₂O).
Chemical equation: CH₄ (g) + O₂(g) → CO₂(g) + H₂O(g)
↑ ↑ ↑ ↑
-- reactants -- --- products --
The bonds in CH₄ and O₂ are brokenThe bonds in CO₂ H₂O are formedThe reactants have been transformed into different chemical compounds, so this is a chemical changle.
Chemical reactions involve the changing of substances through the breaking and formation of bonds. Reactants are the starting substances, while products are the resulting substances. The direction of the reaction is indicated by an arrow.
Explanation:Chemical reactions occur when two or more atoms bond together to form molecules or when bonded atoms are broken apart. The substances used in a chemical reaction are called the reactants (usually found on the left side of a chemical equation), and the substances produced by the reaction are known as the products (usually found on the right side of a chemical equation). An arrow is typically drawn between the reactants and products to indicate the direction of the chemical reaction; this direction is not always a 'one-way street.'
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In order to synthesize proteins, carbohydrates, lipids, and nucleic acids, cells require _____.
disaccharides
energy
an adenosine group
a sugar group
Answers
Answer:
Energy
Explanation:
A sugar group would be used for carbohydrates or nucleic acids. An adenosine group would be used in ATP formation if I recall correct. And disaccharides are just two monosaccharides linked together, so that would also be for carbohydrates. Therefore, energy is the answer.
What amounts do you compare when measuring concentration
Answers
Answer:
When measuring concentration you compare the amount of solute to the amount of solvent or solution.Explanation:
The concentration is a measure of how much solute is present in certain amount of solvent or solution. There are many quantitative expressions for the concentration. Some of those expressions are: percentage, molarity, molality, molar fraction, among others.
This table shows the expressions for some concentration measures, showing the amounts compared.
Concentration amounts compared in form of ratio
Percentage, mass/mass (mass of solute / mass of solution) × 100
Percentage, vol./vol. (vol. of solue / vol. of solution) × 100
Molarity (moles of solute / liters of solution)
Molality (moles of solute / Kg of solvent)
The molar concentration of sucrose in a can of soda is 0.375 M. How much sucrose would be found in a 2 liter bottle of soda of the same concentration?
A)
0.075 mol
B)
0.19 mol
C)
0.75 mol
D)
1.9 mol
Answers
Answer:
C) 0.75 mol.
Explanation:
Molarity is defined as the no. of moles of solute dissolved in 1.0 L of the solution.So, The molar concentration of sucrose in a can of soda is 0.375 M means that: every 1.0 L of sucrose contains 0.375 mol of sucrose.
∴ 2 liter bottle of soda of the same concentration contains (2 * 0.375 mol = 0.75 mol) of sucrose.
Thus, the right choice is: C) 0.75 mol.
I NEED HELP ASAP!!! THIS IS A 30 POINT QUESTION!!!
Which statement best describes the steps leading up to protein synthesis?
( 1 )The translation of DNA to RNA occurs in the cytoplasm; then, the transcription of RNA occurs in the nucleus.
( 2 )The transcription of DNA to RNA occurs in the cytoplasm; then, the translation of RNA occurs in the nucleus.
( 3 )The translation of DNA to RNA occurs in the nucleus; then, the transcription of RNA occurs in the cytoplasm.
( 4 ) The transcription of DNA to RNA occurs in the nucleus; then, the translation of RNA occurs in the cytoplasm.
Answers
Answer:
4
Explanation:
Protein synthesis involves two major steps:
Transcription of the DNA to mRNA (a form of RNA)Translation of the mRNA molecule into a protein.Transcription involves the formation of a nucleotide sequence complementary to the DNA molecule, with the pairing of a different base, Uracil, with Guanine instead of the usual Thymine base. This occurs in the nucleus of the cell, and the resulting molecule is known as the mRNA.
This mRNA is transported into the cytoplasm through the nuclear pore for the next step, translation. This is primarily accomplished by ribosomes and tRNA molecules which are present in the cytoplasm of the cell. The result of this step is the generation of a protein molecule.
Hope this helpsAnswer:
its A, C and E (1, 3, 5)
i did this on edgenuiti and it was correct =)
mark as brainliest i really need it bc if not i'll never level up i have 797/500 points
A sample of a compound analyzed in a chemistry laboratory consists of 5.34 g of carbon, 0.42 g of hydrogen, and 47.08 g of chlorine. What is the percent composition of this compound?
Answers
Answer:
10.1 % Carbon, 0.8 % Hydrogen and 89.1 % Chlorine.
Explanation:
The total mass of the compound is 5.34 + 0.42 + 47.08 = 52.84 g.
The percentage of carbon is: [tex]\frac{5.34}{52.84}[/tex] × 100 = 10.1 %
The percentage of hydrogen is: [tex]\frac{0.42}{52.84}[/tex] × 100 = 0.8 %
The percentage if chlorine is: [tex]\frac{47.08}{52.84}[/tex] × 100 = 89.1 %
The percent composition of the compound is approximately 10.10% carbon, 0.797% hydrogen, and 89.10% chlorine.
To determine the percent composition of the compound, one must calculate the mass percentage of each element present in the sample. The mass percentage of an element is calculated by dividing the mass of that element by the total mass of the compound and then multiplying by 100%.
First, we need to find the total mass of the compound by summing the mass of all the elements present:
Total mass = Mass of carbon + Mass of hydrogen + Mass of chlorine
Total mass = 5.34 g + 0.42 g + 47.08 g
Total mass = 52.84 g
Now, we can calculate the mass percentage of each element:
Percent composition of carbon:
[tex]\( \frac{\text{Mass of carbon}}{\text{Total mass}} \times 100\% = \frac{5.34 \text{ g}}{52.84 \text{ g}} \times 100\% \approx 10.10\% \)[/tex]
Percent composition of hydrogen:
[tex]\( \frac{\text{Mass of hydrogen}}{\text{Total mass}} \times 100\% = \frac{0.42 \text{ g}}{52.84 \text{ g}} \times 100\% \approx 0.797\% \)[/tex]
Percent composition of chlorine:
[tex]\( \frac{\text{Mass of chlorine}}{\text{Total mass}} \times 100\% = \frac{47.08 \text{ g}}{52.84 \text{ g}} \times 100\% \approx 89.10\% \)[/tex]
Therefore, the percent composition of the compound is approximately 10.10% carbon, 0.797% hydrogen, and 89.10% chlorine.
What type of reaction takes place when fluorine reacts with sodium bromide?
Answers
This is a single replacement reaction involving halogens
A 0.100 M solution of K2SO4 would contain the same total ion concentration as which of the following solutions?0.0800 M Na2CO3 0.100 M NaCl 0.0750 M Na3PO4 0.0500 M NaOH
Answers
Answer:
The third chice: 0.0750 M Na₂SO₄Explanation:
Assume 100% ionization:
1) 0.100 M solution K₂SO₄
K₂SO4 (aq) → 2K⁺ (aq) + SO₄²⁻ (aq)Mole ratios: 1 mol K₂SO4 : 2 mol K⁺ + 1 mol SO₄²⁻ (aq) : 3 mol ions. This is 1 : 3At constant volume, the mole ratios are equal to the concentration ratios (M).1 M K₂SO₄: 3 M ions = 0.100 M K₂SO₄ / x ⇒ x = 0.300 M ionsThis means, that you have to find which of the choices is a solution that contains the same 0.300 M ion concentration.
2) 0.0800 M Na₂CO₃
Na₂CO₃ (aq) → 2 Na⁺ + CO₃⁻1 M Na₂CO₃ / 3 M ions = 0.0800M / x ⇒ x = 0.0267 M ionsThis is not equal to 0.300 M, so this solution would not contain the same total concentration as a 0.100 M solution of K₂SO₄, and is not the right answer.
3) 0.100 M NaCl
NaCl → Na⁺ + Cl⁻1 M NaCl / 2 M ions = 0.100 M NaCl / x ⇒ x = 0.200 M ionsThis is not equal to 0.300 M ion, so not a correct option.
4) 0.0750 M Na₃PO₄
Na₃PO₄ → 3Na⁺ + PO₄³⁻1 M Na₃PO₄ / 4 M ions = 0.0750 M Na₃PO₄ / x ⇒ x = 0.300 M ionsHence, this ion concentration is equal to the ion concentration of a 0.100 M solution of K₂SO₄, and is the correct choice.
5) 0.0500 M NaOH
NaOH → Na⁺ + OH⁻1 M NaOH / 2 mol ions = 0.0500 M NaOH / x ⇒ x = 0.100 M ionsNot equal to 0.300 M, so wrong choice.
A 0.100 M solution of K₂SO₄ has the same total ion concentration as a 0.0750 M solution of Na₃PO₄, both resulting in 0.300 M of ions.
K₂SO₄ dissociates into 2K⁺ and (SO₄)²⁻. Thus, a 0.100 M solution of K₂SO₄ produces 0.200 M K⁺ (2 x 0.100 M) and 0.100 M (SO₄)₂⁻, resulting in a total ion concentration of 0.300 M.
Let’s analyze the other solutions:
0.0800 M Na₂CO₃: Dissociates into 2 Na⁺ and (CO₃)²⁻, producing 0.160 M Na⁺ and 0.080 M (CO₃)²⁻. Total: 0.240 M ions.0.100 M NaCl: Dissociates into Na⁺ and Cl⁻, producing 0.100 M Na⁺ and 0.100 M Cl⁻. Total: 0.200 M ions.0.0750 M Na₃PO₄: Dissociates into 3 Na⁺ and (PO₄)³⁻, producing 0.225 M Na⁺ and 0.075 M (PO₄)³⁻. Total: 0.300 M ions.0.0500 M NaOH: Dissociates into Na⁺ and OH⁻, producing 0.050 M Na⁺ and 0.050 M OH⁻. Total: 0.100 M ions.The correct answer is 0.0750 M Na₃PO₄, as it also produces a total ion concentration of 0.300 M.
Express this as a chemical equation: Hydrogen gas bubbled through a solution of silver nitrate?
Answers
Answer:
H₂ (g) + 2AgNO₃ (aq) → 2HNO₃ (aq) + 2Ag (s)Explanation:
1) Word equation:
Hydrogen gas + silver nitrate → nitric acid + silver2) Chemical (skeleton) equation:
Include phases but do not balance it (yet). The symbology used is:
(g) for gas(aq) for aqueous solution(s) for solidH₂ (g) + AgNO₃(aq) → HNO₃ (aq) + Ag (s)3) Balanced chemical equation:
Add the needed coefficients to make the number of atoms of each kind equal on both sides:
H₂ (g) + 2AgNO₃ (aq) → 2HNO₃ (aq) + 2Ag (s) ← answerThe chemical equation that represents hydrogen gas being bubbled through a solution of silver nitrate is: 2AgNO3(aq) + H2(g) -> 2Ag(s) + 2HNO3(aq). This is a redox reaction where silver is reduced and hydrogen is oxidized.
Explanation:When hydrogen gas is bubbled through a solution of silver nitrate, a chemical reaction occurs. This can be written as a chemical equation:
2AgNO3(aq) + H2(g) -> 2Ag(s) + 2HNO3(aq)
In this equation, hydrogen gas (H2) reacts with silver nitrate (AgNO3) in the solution to form solid silver (Ag) and nitric acid (HNO3). This is a redox reaction, where silver is reduced (gains electrons) and hydrogen is oxidized (loses electrons).
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Which of the following graphs has a slope that indicates an object that is steadily slowing down?
then it has a picture
Answers
The correct graph should start at the top left of the plane. It should look like a diagonal line heading down towards the bottom right.
Whenever you have a graph moving at a steady rate, it will be linear (or straight/diagonal). Depending on how the graph is changing will determine which corner you start and end on.
Answer:
the graph should look like this
Explanation:
Atom having a valence of one is ____
Answers
Answer:
monovalent or univalent
Explanation:
Atoms with a valency of 1 are said to be monovalent or univalent atoms. The valency of an atom is the number of electrons in its outermost shell.
Elements with a valency of 1 would readily and easily lose one electron in order to achieve a stable configuration which would resemble those of the noble gases or group O elements.
On the periodic table, elements in group one are all monovalent i.e they all have one electron in their outermost shell.
Which redox equation is correctly balanced?
(1) Cr3+ + Mg -> Cr + Mg2+
(2) Al3+ + K -> Al + K+
(3) Sn4+ + H2 -> Sn + 2H+
(4) Br2 + Hg -> Hg2+ + 2Br
Answers
The answer is 4), see the picture
The redox equation which is correctly balanced is: 4. [tex]Br_2 + Hg \rightarrow Hg^{2+} + 2Br[/tex]
What is a redox reaction?A redox reaction is also referred to as oxidation-reduction reaction and it can be defined as a type of chemical reaction in which the oxidation number of an atom of participating chemical species are changed.
In this scenario, the oxidation number of an atom of hydrogen is change from one to two. Thus, the redox equation which is correctly balanced is given by [tex]Br_2 + Hg \rightarrow Hg^{2+} + 2Br[/tex]
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A molecule of an unsaturated hydrocarbon must have
1) at least one single carbon-carbon bond
2) at least one multiple carbon-carbon bond
3) two or more single carbon-carbon bonds
4) two or more multiple carbon-carbon bonds
Answers
Answer:
2) at least one multiple carbon-carbon bond.
Explanation:
An unsaturated hydrocarbon must have a double or triple C-C bond which is unsaturated bond that means it is not saturated with atoms.Saturated hydrocarbon is the hydrocarbon in which all C-C bonds are single.So, A molecule of an unsaturated hydrocarbon must have 2) at least one multiple carbon-carbon bond.
CH4 + 2O2 ? CO2 + 2H2O In the chemical reaction, if 10 moles of H2O are produced, moles of CO2 are also produced.
Answers
Answer:
5 moles
Explanation:
This reaction (in the question) is a combustion reaction.
A combustion reaction is a reaction in which a substance (in this case an organic compound) is burnt in excess oxygen to produce carbon dioxide and water.
From the equation in the question, it can be deduced that the moles of the products are in the ratio 1:2 for CO₂ and H₂O respectively. Hence, when 10 moles of H₂O is produced, 5 moles of CO₂ will be produced.
1:2 (from the equation)
5:10 (for the answer) ⇔ which is still the same as 1:2
Practice 11: Balance this redox reaction using the oxidation-number change method and describe each step you used:
HCl (aq) + Zn (s) → ZnCl2 (s) + H2 (g)
Answers
Answer:
2 HCl(aq) + Zn(s) = ZnCl2(s) + H2(g)
Single Replacement Reaction
A sodium atom has an electron configuration of 1s22s22p63s1.if the sodium atom becomes ionized, its new electron configuration will be the same as which element? select one:a. neonb. magnesiumc. lithiumd. potassium
Answers
Answer:
Neon
Explanation:
1s² 2s² 2p⁶ 3s¹ or [Ne] 3s¹
The outer most shell is the 3s¹.
For this atom to achieve stability, if it loses the electron in the 3s shell, it would resemble an inert element with a complete octet configuration. Therefore, the atom would be like:
1s² 2s² 2p⁶ which is the configuration of Ne