The answer option which best explains the age of oceanic crust and ocean-floor features is: A. Seafloor spreading.
Earth crust refers to the outermost layer (thin shell) which makes up the Earth such as igneous, metamorphic, and sedimentary rocks.
Generally, the two (2) main types of Earth crust include:
Continental crust.Oceanic crust.An oceanic crust has a thickness ranging from 5 kilometers to 10 kilometers and it comprises denser rocks such as gabbro, diabase, and basalt.
Seafloor spreading can be defined as a process which involves the formation of new oceanic crust due to volcanic activity and an upwelling of magma at mid-ocean ridges, as well as a subsequent outward movement from the ridge.
Basically, the theory of seafloor spreading can be used to explain in details how a new oceanic crust is created or formed at mid-ocean ridges.
Hence, seafloor spreading best explains the age of oceanic crust and ocean-floor features.
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What is the mole to mole ratio of oxygen to water for the equation below?
C7H16 + 11 O2 -> 7 CO2 + 8 H2O
a. 11:8
b. 8:11
c. 1:11
d. 11:1
Answer:
A
Explanation:
because
O2 : H2O
11 : 8
hope this helps:)
The mole to mole ratio of oxygen to water for the chemical equation given is 11:8.
What is a mole?Mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.
It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.
It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons. Molar mass has units of gram per mole . In case of molecules, where molar mass in grams present in one mole of atoms is its atomic mass.
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When there is an increase in temperature of a gas in an
enclosed container, the pressure will also increase due to the:
Answer:increase In kinetic energy of molecules
Explanation:increase in kinetic energy of molecules
When there is an increase in temperature of a gas in an enclosed container, the pressure will also increase due to the increase in the kinetic energy.
What is the relation between temperature and pressure?Temperature and pressure of gas is directly proportional to each other.
When the temperature of the gas increases, then the kinetic energy of the gas molecules are also increases. Due to increase in the velocity of gas molecules they will collide with each other as a result of which pressure of the gas is aslo increases.
Hence due to increase in kinetic energy, pressure increases.
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What is the number of first and last vertical column?
Answer:
Modern periodic table has eighteen (18) vertical columns. These are called groups
A student wants to reclaim the iron from an 18.0 gram sample of iron (III) oxide, which occurs according to the reaction below: how many grams of iron can be reclaimed.
Answer:
12.6 g
Explanation:
Step 1: Write the balanced decomposition reaction
2 Fe₂O₃ ⇒ 4 Fe + 3 O₂
Step 2: Calculate the moles corresponding to 18.0 g of Fe₂O₃
The molar mass of Fe₂O₃ is 159.69 g/mol.
18.0 g × 1 mol/159.69 g = 0.113 mol
Step 3: Calculate the moles of Fe formed from 0.113 moles of Fe₂O₃
The molar ratio of Fe₂O₃ to Fe is 2:4. The moles of Fe formed are 4/2 × 0.113 mol = 0.226 mol
Step 4: Calculate the mass corresponding to 0.226 moles of Fe
The molar mass of Fe is 55.85 g/mol.
0.226 mol × 55.85 g/mol = 12.6 g
Percent yield is the quantity of product actually produced compared to the quantity _______.
a. the limiting reactant
b. volatile materials
c. of expected product
d. the excess reactant
Answer:
Of expected product
Explanation:
Percent yield is the quantity of product actually produced compared to the quantity of expected product and the correct option is option C.
What is the percent yield?Percent yield is the ratio of actual yield divided by theoretical yield multiplied by 100. It gives information regarding the percentage of products formed in the reaction.
Percentage yield = Actual yield / Theoretical yield × 100
Percent yield is very important in the manufacture of products.
Percent yields are understandably less than 100%, however, percent yields greater than 100% are possible if the measured product of the reaction contains impurities that cause its mass to be greater than it actually would be if the product was pure.
Theoretical yield is the expected amount of products formed in the reaction.
Therefore, percent yield is the quantity of product actually produced compared to the quantity of expected product and the correct option is option C.
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What makes lava flow in the manner that it does
Answer:
Lava flows are streams of molten rock that pour or ooze from an erupting vent. Lava is erupted during either nonexplosive activity or explosive lava fountains. ... But when basalt lava flows are confined within a channel or lava tube on a steep slope, the main body of the flow can reach velocities >30 km/h (19 mph).
Explanation:
Which procedure is an attempt to correct a genetic disorder by replacing a mutated gene with a normal allele?
O selective breeding
• cloning
O artificial selection
•
gene therapy
gene therapy
Explanation:
Gene therapy, also called gene transfer therapy, the introduction of a normal gene into an individual's order to repair a mutation that causes a genetic disease.
Answer:
C artificial selection
Explanation:
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Why is it appropriate to describe the Sun and its orbiting celestial bodies as a system?
As the bodies present in the gravitational force of sun, so it is appropriate to describe the sun and its celestial bodies as system.
What are celestial bodied?Celestial bodies are those objects which are present in the space not in the land.
In the space all the planets are present in their orbitals under the gravitational force of the sun and do the motion around the sun, because of that force planets are present in the orderly arrangement. Because of the revolution of the earth around the sun, seasons will change on the earth.
Hence, it is appropriate to describe the sun and its celestial bodies as system.
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Which description is true of earth’s four layers?
Answer:
The astenosphere is located below the lithosphere
The mantle is composed of silicate material
Explanation:
The Earth has several different layers, and they can be presented in two different manners, depending on their chemical composition and their physical properties. According to the chemical composition the Earth has three layers, crust, mantle, and core, while in accordance to the physical properties it has five, lithosphere, astenosphere, mesosphere, outer core, and inner core.
The astenosphere is the second layer from the top, and it lies just below the lithosphere. It is also the upper part of the mantle. The mantle is a layer that is largely composed of silicate material, mostly silicate molten rock. It can easily be seen from the volcanic activities that this layer is composed of silicate material because the magma is rich in it, and the magma comes from this layer.
Why is carbon dioxide a covalent bond?
Explanation:
One atom of carbon (2.4) combines with two atoms of oxygen (2.6) to form the compound carbon dioxide CO2 (only the outer shell of carbon's electrons are shown). ... The carbon dioxide molecule is held together by the strong C=O. carbon–oxygen double covalent bonds by sharing electrons.
What does renewable energy resource mean?
Answer:
Renewable energy is energy from sources that are naturally replenishing but flow-limited; renewable resources are virtually inexhaustible in duration but limited in the amount of energy that is available per unit of time. The major types of renewable energy sources are. Biomass. Wood and wood waste.
Explanation:
Answer:
A renewable resource is one that can be used repeatedly and does not run out because it is naturally replaced.
Explanation:
The lower temperature of the air is there more water vapor can hold True or false. Help!!!!!
Answer:
true
Explanation:
What are the consequences of NOT wearing a mask?
The kinetic molecule theory assumes that the particles of an ideal gas
Explanation:
It is assumed that the particles of an ideal gas have no such attractive forces. The motion of each particle is completely independent of the motion of all other particles. The average kinetic energy of gas particles is dependent upon the temperature of the gas.
calculate the volume occupied by 6.4g of oxygen, 02 at stp?,
Answer:
4.9 L O₂
General Formulas and Concepts:
Atomic Structure
Reading a Periodic TableMolesSTP (Standard Conditions for Temperature and Pressure) = 22.4 L per mole at 1 atm, 273 KStoichiometry
Using Dimensional AnalysisExplanation:
Step 1: Define
Identify variables
[Given] 6.4 g O₂ at STP
[Solve] L O₂
Step 2: Identify Conversions
[STP] 1 mol = 22.4 L
[PT] Molar Mass of O: 16.00 g/mol
Molar Mass of O₂: 2(16.00) = 32.00 g/mol
Step 3: Convert
[DA] Set up: [tex]\displaystyle 6.4 \ g \ O_2(\frac{1 \ mol \ O_2}{32.00 \ g \ O_2})(\frac{22.4 \ L \ O_2}{1 \ mol \ O_2})[/tex][DA] Divide/Multiply [Cancel out units]: [tex]\displaystyle 4.48 \ L \ O_2[/tex]Step 4: Check
Follow sig fig rules and round. We are given 2 sig figs.
4.48 L O₂ ≈ 4.9 L O₂
Why are substances such as coal and gasoline used as fuel sources?
A.They have high kinetic energy, which can be converted into electrical or mechanical
energy
B.They have large amounts of energy stored in the chemical bonds which can be
converted into kinetic energy when combusted
C.They are able to easily make endothermic reactions, which can be harnessed and
converted into mechanical energy
D. None of the above statements are true
Answer:
A.They have high kinetic energy, which can be converted into electrical or mechanical energy
Explanation:
The kinetic energy of the fast-moving water turns turbines, which drive generators that produce electricity. The energy in fossil fuels (coal, oil, gas) is Chemical Potential Energy.
Gold can undergo transmutation. Superscript 185 Subscript 79 Baseline Upper A u right arrow Superscript 181 Subscript 77 Baseline Upper I r + Superscript 4 Subscript 2 Baseline Upper H e This type of nuclear decay is called .
Answer:
Alpha Decay
Explanation:
Answer:
The answer for this would be Alpha Decay
Explanation:
If this is a late answer I apologize but I hope others may find this helpful :)
Which example in the video is a physical change?
A) Burning steel wool
B) Mixing chemicals
C) Rusting nail
D) Melting ice cream
D melting ice cream because if u know what a physical change is its a change that you can reverse chimical change are changes you cant reverse so u can freeze back ice cream so :D
The pH of a solution is 8. Some hydrochloric acid is added to the solution. Suggest the pH of the solution after mixing. pH=.......??
Answer:
Probably around 6 because the ph of hydrochloric acid is 3
Explanation:
Hey fill in the missing temperatures in this chart zoom in if you can’t see it take a screenshot or sum : Please help me will mark brainliest and be geniune .
WHO KNOWS HOW TO DO THISSS NEED HELP RN PLS
Li PO4 + AlF →
Explanation:
Your chemical equation should look like this:
Li3PO4 + AlF3 --> 3LiF + AlPO4
This is the balanced equation for a double-displacement reaction
State the trend in chemical reactivity as we go down the group for Group I elements Account for
this trend using the electronic structures of the elements.
Answer: The reactivity of group 1 elements increases as you go down the group because: the atoms become larger. the outer electron becomes further from the nucleus. the force of attraction between the nucleus and the outer electron decreases.
why is mn2+ more stable than mn3+
Answer:
See Explanation
Explanation:
Let us closely consider the electronic configuration of manganese atom, Manganese II ion and manganese III ion. This will give a clue of the answer.
Manganese: [Ar] 3d5 4s2
Manganese II: [Ar] 3d5
Manganese III: [Ar] 3d4
Now, let us remember that the d orbital contains a maximum of ten electrons. Hence, the electronic configuration of Mn^2+, [Ar] 3d5 reflects a half filled d- orbital which is known to be unusually stable(half-filled orbitals are known to possess unusual stability just as fully filled orbitals do).
The same can not be said about Mn^3+. Hence, Mn^2+ is more stable than Mn^3+.
in your notebook,write the appropriate tempo for the following actions.Then demostrate the actions then,demostrate the action in front of your parents,guardian
Answer:
cell :—
•They lack a well-defined nucleus, have a nucleoid instead.
•Usually have double-stranded, circular DNA.
•Do not have mitochondria.
Eukaryotic cell :—
•Have a well-defined nucleus enclosed in the nuclear membrane.
•Have a linear double-stranded nucleus.
•Mitochondria are present.
Steel wool turns from a gray color to a reddish color after it gets wet and then sits on a counter. Is this a sign of a chemical or physical change? PLEASE ANSWER ASAP!
Answer: Steel wool turns from a gray color to a reddish color after it gets wet and then sits on a counter is a sign of chemical change.
Explanation:
A change that brings change in chemical composition of a substance is called a chemical change.
For example, Steel wool turns from a gray color to a reddish color after it gets wet and then sits on a counter is a chemical change.
This is because steel wool is mostly made up of iron and when iron becomes wet then in the presence of air it gets oxidized and therefore, it gets corroded.
This corrosion appears as reddish color of steel wool and it represents a chemical change has occurred in the steel wool.
Thus, we can conclude that steel wool turns from a gray color to a reddish color after it gets wet and then sits on a counter is a sign of chemical change.
A container of oxygen with a volume of 60 L is heated from 300 K to 400 k, What is the new volume?
Answer:
80L
Explanation:
V1/T1 = V2/T2
V2 = V1 T2/T1
T1 = 300K
V1 = 60L
T2 = 400K
V2 = ?
V2 = V1 T2/T1
V2 = (60L)(400K) / (300K)
V2 = 80L
balance the equation xcl2(aq)+agno3(aq)=x(no3)2(aq)+agcl(s)
Explanation:
[tex]XCl _{2(aq)} + 2AgNO _{3(aq)}→X(NO _{3}) _{2(aq)} +2 AgCl _{(s)}[/tex]
Answer:
[tex]XCl2(aq) + 2AgNO3(aq) --------> X(NO3)2(aq) + 2AgCl(s)[/tex]
Explanation:
The rule guiding he balancing of reaction equations is that the number of atoms of each element on both sides of the reaction equation must be the same.
In order to balance this equation, this rule must be applied. The balanced reaction equation therefore becomes;
XCl2(aq) + 2AgNO3(aq) --------> X(NO3)2(aq) + 2AgCl(s)
We can see by conducting an atom count that the number of atoms of each element on both sides of reaction equation is the same hence the equation is balanced.
Consider this reaction and answer the questions:
Upper K upper C l upper O subscript 3 right arrow upper K upper C l plus upper O subscript 2.
What is the oxidation number of chlorine in the reactant state?
What is the oxidation number of oxygen in the reactant state?
What is the oxidation number of potassium in the reactant state?
What is the oxidation number of chlorine in the product state?
What is the oxidation number of oxygen in the product state?
What is the oxidation number of potassium in the product state?
Balanced chemical reaction: 2KClO₃ → 2KCl + 3O₂.
Potassium is metal from first group of Periodic table of elements, it has always oxidation number in compound +1.
Chlorine in the reactant state has oxidation number +5 (+1 + x + 3 · (-2) = 0) and it is reduced to -1 (+1 + x = 0) in the product state.
Oxygen in the reactant state has oxidation number -2 (+1 + 5 + 3 · x = 0) and it is oxidized to 0 (in molecule of oxygen) in the product state.
Consider this reaction and answer the questions:
Upper K upper C l upper O subscript 3 right arrow upper K upper C l plus upper O subscript 2.
What is the oxidation number of chlorine in the reactant state?
+5
What is the oxidation number of oxygen in the reactant state?
-2
What is the oxidation number of potassium in the reactant state?
+1
What is the oxidation number of chlorine in the product state?
-1
What is the oxidation number of oxygen in the product state?
0
What is the oxidation number of potassium in the product state?
+1
Which wave is used to identify the heat given off by distant objects in space
What do you measure in an experiment to determine reaction rate?
Group of answer choices
A. Amount of reactants
B. Amount of products
C. Temperature
D. Time