Only 2.5 moles of CO2 can be produced since oxygen is the limiting reaction.
Steps4molCH4 x (1molCO2/1molCH4) =4 mol CO2
5 mol O2 x (1molCO2/2molO2) =2.5 molCO2
Only 2.5 moles of CO2 can be produced since oxygen is the limiting reaction.
Why is carbon dioxide important? What is it?One carbon atom and two oxygen atoms make up the molecules of carbon dioxide (CO2). An essential greenhouse gas that aids in keeping heat in our atmosphere is carbon dioxide. Our earth would be uninhabitable cold without it.What is carbon dioxide used for?
Co2 is used as a refrigerant, in extinguishers, to blow coal, foam rubber and plastics, inflate life rafts and life jackets, blast coal, promote plant growth in greenhouses, immobilise animals before slaughter, and in carbonated drinks.
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Carbon monoxide is formed in the blast furnace. This reduces the ore hematite, Fe2O3, to iron.
(i) Explain how carbon monoxide is formed in the blast furnace.
Answer:
At the high temperature at the bottom of the furnace,carbon to produce carbon monoxide
Explanation:
The coke (essentially impure carbon) burns in the blast of the hot air to form carbon dioxide - a strongly exothermic reaction. This reaction is the main source of heat in the furnace
Which 2 organelles make the protein needed for the cell?
Answer:
The endoplasmic reticulum
Explanation:
can either be smooth or rough, and in general its function is to produce proteins for the rest of the cell to function.
During science lab, some students added small pieces of magnesium (Mg) to hydrochloric acid (HCl). They noticed that bubbles formed, the test tube got hot, and the magnesium disappeared.
Which of the following is a sign that a chemical reaction has taken place in this experiment?
A) odor B) formation of gas C) decrease in temperature D) formation of a precipitate
Select the correct answer. which type of property can be observed only by changing a substance into a different substance? a. intensive property b. extensive property c. physical property d. chemical property
The correct option is D: Chemical property
Chemical properties can be observed only by changing a substance into a different substance.
When a substance or a material undergoes a chemical change then it becomes a completely different kind of substance.
In chemistry, chemical properties are the kind of properties that can be observed or measured as a result of a chemical change.
Examples of chemical changes are rusting of iron, combustion of a compound or fossil fuels, flammability, reactivity, acidity, and toxicity.
To put it simply, a chemical property brings a complete change to the identity of a matter.
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The periodic table of elements should really be called the periodic table of atoms. Use oxygen as an example to explain why?
The atomic number, which is equal to the number of protons in the nucleus, controls the electrons in the atoms, which in turn control the chemistry.
The periodic table is all about chemistry, for one simple reason. The atomic number, which is equal to the number of protons in the nucleus, controls the electrons in the atoms, which in turn control the chemistry.
The atomic number is what distinguishes an element.
Additionally, if we have two distinct isotopes of the same element, their atom types will differ.
As a result, there is significant power in using isotopic systems that only use one element, as demonstrated by the analysis of the three oxygen isotopes (16O, 17O, 18O), which have different properties, should be treated as different types of atoms in an atoms table.
As each isotope of an element is listed as a different species, the chart of the nuclides can be thought of as a "chart of atoms."
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calculate the number of coulombs of positive charge in 250cm 3 of (neutral) water. (hint: a hydrogen atom contains one proton; an oxygen atom contains eight protons.)
Number of coulombs of positive charge in 250cm^3 water is 1.3×10^7 C
The volume of 250 cm^3 corresponds to a mass of 250 g since the density of water is 1.0 g/cm^3
This mass corresponds to 250/18 = 14 moles since the molar mass of water is 18. There are ten proton (each with charge q = +e) in each molecule of [tex]H_{2}O[/tex] So,
Q = 14NA q =14(6.02×10^23)(10)(1.60×10^−19C) = 1.3×10^7 C.
Mass is the quantity of matter in a physical body. It is also a measure of the body's inertia, the resistance to acceleration when a net force is applied. An object's mass also determines the strength of its gravitational attraction to other bodies.
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In the electrolysis of aluminium ore, which is the positive ion? Give the name, not the symbol.
Positively charged aluminum ions gain electrons from the cathode and form molten aluminum. Electrolysis is used to perform the extraction. The aluminum oxide must let the ions to travel freely in order for electricity to flow through it.
Due to its extremely high melting point (about 2000°C), aluminum oxide would be expensive to melt. Although it doesn't dissolve in water, aluminum oxide does in molten cryolite. The melting point of this aluminum compound is lower than that of aluminum oxide. Cryolite utilization lowers some of the energy expenses associated with aluminum extraction. Carbon dioxide bubbles off once the oxygen and carbon in the electrodes react. The positive electrodes must consequently be replaced regularly since they lose carbon over time. This raises the price of the procedure.
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the diameter of the nucleus of an atom is approximately 1 × 10-15 meters. if 1 nm is equal to 10 ångstroms, what is the diameter of the nucleus in ångstroms?
The diameter of the nucleus in angstrom, given the data is 1×10⁻⁵ angstrom
Conversion scale1 nm = 10 angstrom
Data obtained from the questionThe following data were obtained from the question:
Diameter (in meters) = 1×10⁻¹⁵ mDiameter (in angstrom) =?How to convert 1×10⁻¹⁵ m to nm1 m = 1×10⁹ nm
Therefore,
1×10⁻¹⁵ m = (1×10⁻¹⁵ m × 1×10⁹ nm) / 1 m
1×10⁻¹⁵ m = 1×10⁻⁶ nm
How to convert 1×10⁻⁶ nm to angstrom1 nm = 10 angstrom
Therefore,
1×10⁻⁶ nm = (1×10⁻⁶ nm × 10 angstrom) / 1 nm
1×10⁻⁶ nm = 1×10⁻⁵ angstrom
Thus, the diameter of the nucleus in angstrom is 1×10⁻⁵ angstrom
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vsepr theory predicts an identical shape for all of the following except: nh3 b. h3o c. bh3 d. ch3:- e. all have the same geometry
The following are all predicted to have an identical shape under the vsepr theory, with the exception of: BH 3
VSEPR theoryValence shell electron pair repulsion (VSEPR) is the name given to this idea. The total number of electron pairs (TEP) encircling the main atom of a species is calculated using the VSEPR theory. Bond pairs (BP) and lone pairs are the components of the TEP (LP). In this scenario, every pair of electrons will position themselves to reduce electrostatic attraction between them, just like a charge would. The covalent bonds' shapes around the main atom are determined by these repulsions.Except for BH 3, every molecule in the available possibilities has the same geometry. The reason for this is that the BH 3 compound doesn't have a lone pair.learn more about VSEPR theory here
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explain why a s bond formed by overlap of an s orbital with an sp3 orbital of carbon is stronger than a s bond formed by overlap of an s orbital with a p orbital of carbon.
Overlapping of an sp³ orbital (which has high electron density) with an s orbital forms a stronger bond than that formed by overlapping of an s orbital with p orbital.
What is Orbital Overlapping?
an orbital overlapping is a merging of Orbital on adjacent Atom .Overlapping of orbitals results in the formation of Bond.This hybridized orbital is stable. it has lower energy than the atomic orbital.They are in Minimum Energy state.Single bonds contain one sigma bond. Double bonds contain one σ and one π bond. triple bonds consist of one σ and two π bonds.Positive Overlapping of Atomic Orbital –When two interacting orbitals are in same phase, then the overlapping is positive and this lead in the formation of bond.
2. Negative Overlapping of Atomic Orbital –
When two interacting orbitals are in opposite phase, then the overlapping is positive and bond is not formed.
3. Zero Overlapping of Atomic Orbital
When orbitals do not overlap each other then the overlapping is known as Zero overlapping orbital.
Now,
Overlapping of an sp³ orbital (which has high electron density) with an s orbital forms a stronger bond than that formed by overlapping of an s orbital with p orbital.
From the above conclusion we can say that , Overlapping of an sp³ orbital (which has high electron density) with an s orbital forms a stronger bond than that formed by overlapping of an s orbital with p orbital.
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Using the dimensional Analysis
In the Above questions to convert 14,612 mL to DAL which of the following portrays to correct set up
The correct dimensional analysis for the conversion of 14,612 mL to daL is shown in option A.
What is unit conversion?Many times, it important to determine the value of measurement across different units. This is why we need to convert from on unit to another. Such a conversion is made possible by the use of a conversion factor.
Now we know that there is a conversion factor that could be used to convert mL to daL. This conversion factor has to be laid out in a way that is dimensionally correct so that the units could cancel out.
The correct dimensional analysis for the conversion of 14,612 mL to daL is shown in option A.
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state the name given to the different structures that can be drawn to represent the covalent bonding in a molecule that has more than one position in the molecule for a multiple bond
Structures that can be drawn to represent the covalent bonding in a molecule that has more than one position in the molecule for a multiple bond are known as Position Isomers.
Position isomers are isomers with same chemical formula but the functional group is attached to different position of carbon in different structures.
Example-
Hex1-ene , Hex2-ene, Hex3-ene are position isomers with double bond on first, second and third carbon respectively as shown below-
[tex]CH_2= CH-CH_2-CH_2-CH_2-CH_3\\CH_3-CH=CH-CH_2-CH_2-CH_3\\CH_3-CH_2-CH=CH-CH_2-CH_3[/tex]
Other examples are pent1-yne and pent2-yne where triple bond is on first and second carbon respectively.
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Look at the clock and listen to the statement. Indicate whether the statement is cierto or falso. Questions 0:13 / 0:48 1. Cierto falso 2. Cierto falso 3
Answer:
Amigo esta es mi respuesta
Explanation:
No entiendo
Phosphoric acid can supply one, two, or three h3o ions in aqueous solution. Write balanced equations to show successive loss of hydrogen ions
Balanced equation for the first step of dissotiation:
H₃PO₄(aq) + H₂O(l) ⇄ H₂PO₄⁻(aq) + H₃O⁺(aq).
Balanced equations for the second step of dissotiation:
H₂PO₄⁻(aq) + H₂O(l) ⇄ HPO₄²⁻(aq) + H₃O⁺(aq).
Balanced equations for the third step of dissotiation:
HPO₄²⁻(aq) + H₂O(l) ⇄ PO₄³⁻(aq) + H₃O⁺(aq).
A phosphoric acid or orthophosphoric acid (H₃PO₄) is three protic acid, which means that in water it releases three hydrogen ions. A phosphoric acid ionizes in three steps in water.
Species that are present: H₃PO₄, H₂PO₄⁻, HPO₄²⁻, PO₄³⁻ and H₃O⁺.
Hydronium ion (H₃O⁺ ) is the type of oxonium ion produced by protonation of water.
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Conduct research to learn about the history
of atomic models and the scientists who developed the models. Identify any
experimental evidence and reasoning that supported each model
The atomic theory have been developed over the years by the works of many scientists.
What is the atomic theory?The atomic theory is the series of postulations that sought to explain the behavior of the atom. The study of the atom started as far back as the time of Democritus and Aristotle.
The first empirical study of the nature of the atom started with the work of John Dalton when he proposed the famous Dalton's theory. Further empirical work was carried out by J.J Thompson which gave rise to the plum pudding model of the atoms.
The work of Ernest Rutherford introduced the planetary model of the atom which was latter replaced by the Bohr model based on energy levels. Today, the work of Erwin Schrödinger has led us to the appreciation of the wave mechanical model of the atoms which is the mot accepted model for the atom today.
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Why do we need units of pressure?
Answer:Because there are so many units for energy.
Explanation:
How many atoms are there in 7.61 grams of arsenic?
Answer: 1.24 X 10-22 g. The atomic mass of arsenic is 74.92 amu, 1 mole of arsenic atom has 74.92g weight.
Explanation:
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 0.602×10²³ atoms are there in 7.61 grams of arsenic.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.
Mathematically,
mole =given mass ÷ molar mass
given mass of arsenic= 7.61 grams
Molar mass of 1 mole of arsenic= 74.92g/mol
substituting the given values, we get
number of mole of arsenic =7.61 ÷ 74.92g
=0.10moles
number of atoms of arsenic= number of moles of arsenic× Avogadro number
=0.10× 6.022×10²³
=0.602×10²³ atoms
Therefore, 0.602×10²³ atoms are there in 7.61 grams of arsenic.
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The structure of matter refers to its _____.
Select one:
a.
composition
b.
measurements
c.
behavior
d.
reactions
The structure of matter refers to its composition.
a. compositionwhich ionic bond is stronger: the ionic bond between calcium ions and chloride ions in crystalline calcium chloride , or the ionic bond between potassium ions and chloride ions in crystalline ? explain.
CaCl2 has a stronger ionic bond than KCl because Ca+2 is smaller than K+ in size.
What is the working of ionic bonds ?A stable link formed by the complete transfer of the valence electron is known as an ionic bond. This kind of interaction results in the formation of positive ions, also known as cations, and negative ions, also known as anions.
This kind of interaction is exemplified by the ionic bond in sodium chloride, a salt. The sodium valence electron is transferred to the outer electron shell of chloride. Ionic molecules form the basis of ionic compounds.The three types of bonds that frequently develop are covalent bonds between nonmetals, ionic bonds between metals and nonmetals, and metallic connections between metals.Learn more about Ionic bond here:
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What are the products of the acid-base reaction between hclo3 and lioh? liclo4 h2o lih liclo3 hclo4
The products of the acid-base reaction between chloric acid [tex](HClO_{3})[/tex], and lithium hydroxide [tex](LiOH)[/tex], are water [tex](H_{2}O)[/tex] and lithium chlorate [tex](LiClO_{3} )[/tex]
An acid-base reaction is a chemical reaction that occurs between an acid and a base producing salt and water. It is a double-replacement reaction where ions exchange their positions.
The general equation of an acid-base reaction is as follows.
Acid + Base → Salt + Water
The H(+) cation of the acid combines with the OH(-) anion of the base to form water. The compound formed by the cation of the base and the anion of the acid is called a salt.
For the reaction between chloric acid [tex](HClO_{3})[/tex], and lithium hydroxide [tex](LiOH)[/tex], the H(+) cation of the acid [tex](HClO_{3})[/tex] combines with the OH(-) anion of the base [tex](LiOH)[/tex] to form water. The compound formed by the cation of the base [tex](LiOH)[/tex] and the anion of the acid [tex](HClO_{3})[/tex] is lithium chlorate.
[tex]H^{+}+ ClO_{3}^{-} +Li^{+} +OH^{-} = LiClO_{3} + H_{2}O[/tex]
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Which best explains why a crystal is incompressible?
A.Its molecules remain in position without vibrating.
B.The molecules of a crystal behave like those of a gas.
C.There is little, if any, space left between its adjacent molecules.
D.Its molecules switch positions when they are compressed.
Answer:
its molecule remain in position without vibrating
Answer:
The Answer is C; There is little, if any, space left between its adjacent molecules.
Explanation:
Because it is so compact, it cannot be compressed any further. Imagine trying to press down on a piece of bread versus a brick. The bread would flatten because it is full of air, but the brick would not because it is compact.
I hope this helps, have a nice day! :)
How many valence electrons does Sodium (atomic #11) have? (1 pt)
*
1 point
1
7
8
11
How do I solve this?
The mass percentage of each compound in the mixture is as follows:
mass percentage of Lithium chloride, LiCl = 14.11%
mass percentage of Lithium carbonate, Li₂CO₃ = 42.82%
mass percentage of lithium nitrate, LiNO₃ = 43.09%
What is the mass percentage of each compound in the mixture?The mass percentage of each compound in the mixture is calculated as follows:
Assuming the mixture consists of 1 mole of each of lithium chloride, LiCl, lithium carbonate, Li₂CO₃, and lithium nitrate, LiNO₃
Total mole of lithium = 4 moles
Total moles of oxygen = 6 moles
Total moles of Chloride = 1 mole
Total moles of Nitrogen = 1 mole
Li = 14.19 %
CI = 10.56%
C = 6.198 %
O = 59.06%
N = 10.01%
The mass percentage of each compound in the mixture will be:
mass percentage of Lithium chloride, LiCl = 14.19%/4 + 10.56% = 14.11%
mass percentage of Lithium carbonate, Li₂CO₃ = 2 * (14.19 %/4) + 6.198 % + 3 * (59.06%/6) = 42.82%
mass percentage of lithium nitrate, LiNO₃ = 14.19 %/4 + 10.01% + 3 * (59.06%/6) = 43.09%
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. Apply Concepts Are there more tissues or more organs in your body
Explain your reasoning.
Answer:
Explanation:
Organs are more complex units than tissues. An organ is an organization of several different kinds of tissues so arranged that together they can perform a special function.
There are more tissues in our body. Tissues are collections of comparable cells that collaborate to carry out particular functions.
Thus, cells are of the same type or different types, they work together to complete a certain mission.
Epithelial tissue, which lines the skin and organs, muscle tissue, which enables movement, and nerve tissue, which transmits electrical signals are a few examples of tissues.
Organs are structures consisting of two or more distinct tissue types that cooperate to carry out a certain function or group of functions in the body. Organs have certain shapes and purposes. Heart is one instance of an organ.
Thus, There are more tissues in our body. Tissues are collections of comparable cells that collaborate to carry out particular functions.
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8. What are the bold faced words in the text?
This style of boldface writing has a few authorized applications. In general, style manuals advise against using it to emphasize. Italics and sentence structure are used for this. It is preferable to utilize boldface text sparingly because it might be aesthetically obtrusive.
Often boldfaced and larger than the surrounding text, titles, headers, and subheadings are used. For instance, the heading "Titles and headings" in this section is bold. This is typical for web publishing.
Boldface is frequently used in textbooks, manuals, and various types of web writing to draw attention to the first occurrence of a crucial keyword that is crucial to the topic of a chapter or article. For instance, in our article on the distinction between program and programme, we boldfaced the text to draw attention to the first occurrence of each keyword (i.e., program and programme). Later, the words do not appear in boldface.
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a pure substance has the blank composition in all of the sample
A pure substance has definite composition and constant properties in all of the sample
A pure substance is a form of matter that has a constant composition and properties that are constant throughout the sample, ex: elements and compoundsElement: A substance that cant be broken down into chemically simpler components, ex: Aluminum , gold etcCompound : A substance that can be broken down into chemically simpler components, ex : water is compound composed of the elements hydrogen and oxygen.All pure substances have definite set of properties but they can vary in their physical states, chemical compositions and color.Characteristics and Properties Of Pure Substances
Pure substances are homogeneous in nature containing only one type of atom or molecule.These substances have a constant or uniform composition throughout.These substances have fixed boiling and melting points.Pure substance usually participates in a chemical reaction to form products.Thus we can conclude that a pure substance has definite composition in all of the sample
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Can someone give me about 10 sentences about climate change pls i give the person 100
Explanation:
carbon dioxide is a green house gas among many others, human activities Increase the amount of co2 being released. Co2 acts as a global insulator, when the sun rays enter the atmosphere and then bounces back off the earth, the co2 creates a blanket that traps the sun rays. this therein causes the surface of the earth to "heat up" and cause global warming. the increased temperatures triggers another series of events; ice caps begin to melt and in already hot areas there are chances of forest fires etc. the melting of the ice then causes a rise in sea level and the potential release of diseases and other unknown material that was trapped in the ice from different ages ago. the rise in sea level can cause land area to decrease and small islands to be submerged. many habitats would be affected as the ice above the water acts as Insulation that keeps the water below at optimum conditions for sea creatures. on another note, the forest fires destroy habitats and property, this leads to many species becoming endangered and the environment to become inhabitable as the air is not breathable due to thick smoke etc. the fires also contribute back to the global warming and it will just get increasingly worse over a period of time if without interference. the seasons in many place will change to more rapid and serious conditions....
(hope this helps, I just went off lol)
Describe what happens when a lithium atom reacts with a chlorine atom.
Answer in terms of electrons.
A student is using a microscope to observe samples taken from pondwater. The student notices something
that she thinks may be a living thing. Which evidence would BEST support that the unknown sample is a
living thing?
A The sample is made of cells and is using energy.
B The sample is responding to stimulus and is breathing oxygen.
C The sample is producing bubbles and is growing larger.
D The sample is green and is moving.
The evidence that would best support that the unknown sample is a living thing is that the sample is made of cells and is using energy (option A).
What are living things?Living things are classes of things that contains life in them.
According to this question, a student is using a microscope to observe samples taken from pond water. The student notices something that she thinks may be a living thing.
In order to confirm if this unknown sample is a living thing, it must conform to the cell theory, which states that all living things are made up of one or more cells.
Therefore, the evidence that would best support that the unknown sample is a living thing is that the sample is made of cells and is using energy.
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How much energy is required to raise the temperature of 2kg of iron from 20 c to 23 c?
20.7 kJ energy is required to raise the temperature of 2kg of iron from 20 c to 23 c.
Specific heat capacity refers to the amount of heat required to raise the temperature of a substance. Specific heat capacity is denoted by c.
The formula is Q = mcΔT
Given:
Mass = 2.00kgc = 449 J/ kg°CΔT = 23°CSolution:
Put the values in the formula given below
Q = mcΔT
Q = (2.00 kg) (449 J/ kg°C) ( 23°C)
Q = 20654 J or Q = 20.7 KJ
Approximately 20.7 kJ heat is required to raise the temperature of 2kg of iron from 20°C to 23°C.
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