The parent rock or protolith is key in identifying metamorphic rocks because it helps explain the mineral composition and textural changes that occur through the metamorphic process due to heat and pressure. This direct link between metamorphic rocks and their parent rock is not found in igneous or sedimentary rocks, making the parent rock a unique identifier for metamorphic types.
Explanation:The concept of the parent rock, or protolith, is crucial in understanding metamorphic rocks because it represents the original, unmetamorphosed rock from which a metamorphic rock was formed. Unlike igneous or sedimentary rocks, metamorphic rocks undergo physical and sometimes chemical changes due to heat and pressure without melting, and these changes often result in patterns or orientations in the minerals, such as foliation.
The composition and texture of a metamorphic rock directly relate to its parent rock, providing clues to the conditions under which it formed. This unique relationship between metamorphic rocks and their parent rock allows geologists to determine the past conditions of the Earth's crust and understand the geological history more completely.
Overall, the identification of the parent rock is essential for classifying metamorphic rocks because it helps to understand the metamorphic processes that the rock has undergone and explains its current mineral composition and texture.
In an unconformity between two layers of rock, how is the upper layer usually described?
much younger than the lower layer
the same age as the lower layer
a little older than the lower layer
much older than the lower layer
correct answer is much younger than the lower layer
/the first one is the right one :)
hope i helped
The upper layer is usually described as much younger than the lower layer. Therefore, option (A) is correct.
What is an unconformity?An unconformity can be described as a break in the geologic rock and fossil record. Rock layers are deposited continuously over geologic time and give information about the past events that have happened on earth.
Certain events can cause rocks to be eroded and results in an interruption in the geologic record. The surface between two rock layers of different ages is a break in an unconformity and the geologic record.
There are three kinds of geologic unconformities which are nonconformities, disconformities, and angular unconformities. Nonconformity can be described as a surface between two layers of sedimentary rock, where the upper layer is much younger than the lower layer.
All the layers that are above and below the unconformable surface are known as sedimentary rocks. A disconformity can be described as a surface that divides young sedimentary rocks from much older, underlying metamorphic rocks.
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How many atoms are present in 0.35 mol of carbon dioxide?
Answer : The number of atoms present are, [tex]6.3\times 10^{23}[/tex]
Explanation : Given,
Moles of [tex]CO_2[/tex] = 0.35 mole
As we know that, 1 mole of substance contains [tex]6.022\times 10^{23}[/tex] number of atoms.
In [tex]CO_2[/tex], there 1 atom of carbon and 2 atoms of oxygen. So, the total number of atoms in [tex]CO_2[/tex] are, 3.
As, 1 mole of [tex]CO_2[/tex] contains [tex]3\times 6.022\times 10^{23}[/tex] number of atoms.
So, 0.35 mole of [tex]CO_2[/tex] contains [tex]0.35\times 3\times 6.022\times 10^{23}=6.3\times 10^{23}[/tex] number of atoms.
Therefore, the number of atoms present are, [tex]6.3\times 10^{23}[/tex]
Is it possible to have carbon atoms with different numbers of protons?
An atom’s chemical behavior is determined mostly by its _______. A. number of protons B. number of neutrons C. number of electrons D. number of valence electrons E. None of the Above
The chemical behaviour of an atom is primarily determined by the number of its valence electrons, which are the ones that participate in chemical reactions.
Explanation:An atom’s chemical behaviour is determined mostly by its number of valence electrons. Option D is correct. The valence electrons, which are the electrons in the outermost shell of an atom, are the ones primarily involved in chemical reactions.
These electrons can be shared, lost, or gained in a chemical reaction, thereby determining the atom’s chemical behaviour. For example, Hydrogen has one valence electron, and it forms bonds with other atoms by sharing or losing that electron.
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Study this equation carefully. What classification should this reaction have?
Cu + 2AgNO 3 Cu(NO 3 ) 2 + 2Ag
synthesis
decomposition
single replacement
double displacement
neutralization
What happen once intercellular signals reach the inside of the cell using some type of receptor
A. The signal stops
B. The signal produces a protein
C. The signal is transferred to the cytoplasm
D. Intercellular communication takes over
Correct option is B.
B. The signal produces a protein
Explanation:There are many kinds of signals that reach the inside of cell. Every signal carry some important message regarding the functioning of cell or any other part of body. Normally signals that penetrate in the cell translate a protein to carry out their function. So, signals actually stimulate the machinery of the cell and make it to produce the protein of its own desire.
Once intercellular signals reaches inside of the cell by the receptor then it helps in the intercellular communication among each other.
Further Explanation:
The receptors are usually the proteinaceous structure that resides over the surface of the cell as well as present inside it. It receives signals in various forms. These signals may only interact with the receptor on the outer surface of the cell or it may reach inside the cell and interact with the receptor molecule. The interaction may result in the manipulation in the transcription process as some of the genes will be stimulated to transcribe into the protein or some may get inhibited.
There can by different types of signal molecule. They are:
1. Autocrine: These signals are produced by the cell type to which the signaling molecule get attached. Therefore they acts over self-cell. This kind of signaling happens in the early development of an organism.
2. Paracrine: These signals produced by the signaling cell acts locally on the cell that lies closer to them.They generally produces faster response.
3. Endocrine: These signals travels to the longer distance and acts over the cells residing over there. They generally produces slower response.
Learn more:
1. Learn more about receptor https://brainly.com/question/7178431
2. Learn more about cell https://brainly.com/question/5923583
3. Learn more about cell cycle https://brainly.com/question/1600165
Answer Details:
Grade: College Biology
Subject: Biology
Chapter: Signal transduction
Keywords:
Intercellular signals, receptor, intercellular communication, transcription, autocrine, cell, organism, paracrine, endocrine.
What will the ratio of ions be in any compound formed from a group 1a and a group 7a nonmetals?
According to the electronic configuration and valency, ratio of ions in compound formed of group 1 and group 17 is 1:1 as they both have charges +1 and-1 respectively.
What is electronic configuration?Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.
Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.
Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.
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As the block slides down the ramp, what type of energy conversion is occurring?
A student dissolves some solid sodium hydroxide in a beaker of water. Which are the solute and the solvent?
Choose all answers that are correct.
A. solvent: sodium hydroxide
B. solute: water
C. solvent: water
D. solute: sodium hydroxide
Answer:
sodium hydroxide is solute and water is solvent
Explanation:
Solutes are minor component of a solution which remain dissolved into solvent.Solvents are major component of a solution which remain present in excess amount in solution.As small amount of solid sodium hydroxide is added into a large excess of water in beaker therefore sodium hydroxide is solute and water is solvent.Option (C) and option (D) are correct.Choose three scientists that were involved in developing atomic theory
What is the mass of 1.50 mol of sodium, na?
To get the answer, you must know first the formula:
We know that moles = mass divided by molecular weight
So to get the mass, we need to alter the original formula, so
mass of sodium = 1.5 moles x atomic weight of Na
so what is the atomic weight of Sodium? It is 22.989769 u.
so the mass of sodium = 1.5 moles x 22.989769 u = 34.4846535
Is dimethyl amine and triethylamine more soluble in water?
Final answer:
Dimethylamine is more water soluble than triethylamine due to its smaller size and ability to form hydrogen bonds more easily, making it dissolve better in water.
Explanation:
The question asks which compound, dimethylamine or triethylamine, is more soluble in water. Water solubility in amines is influenced by the length of the carbon chain and the molecule's ability to form hydrogen bonds. Smaller amines with fewer carbon atoms, such as dimethylamine, are typically more soluble in water compared to larger amines with more carbon atoms, like triethylamine. Molecules like dimethylamine that can form hydrogen bonds easily dissolve in water, whereas triethylamine, which is bulkier and less able to engage in hydrogen bonding, is less soluble. Therefore, dimethylamine would have a higher solubility in water than triethylamine. The basicity of amines also affects their water solubility as they can dissolve in dilute mineral acid solutions, which is useful for the separation of amines from non-polar solvents.
Why is it important to know the properties of baking ingredients?
How many moles of ca atoms are in 534.0 g ca?
When reacting with a chlorine atom, a sodium atom reacts by losing an electron to form the na+ ion, which is _________________________________________?
The melting point of h2o is 0 degrees celsius. this is the same as its:
Final answer:
The melting point of H₂O at 0°C is the same as its freezing point, allowing solid and liquid water to coexist at this temperature due to the unique properties of how water molecules arrange themselves.
Explanation:
The melting point of H₂O, or water, is 0 degrees Celsius (0°C), which is crucially the temperature where both the solid and liquid forms of water can coexist in equilibrium. This means that at 0°C, water can either freeze or melt without a change in temperature.
Understanding this concept is important because it highlights the uniqueness of water and many of its properties, including its density. Ice, being the solid form of H₂O, is actually less dense than liquid water due to the way hydrogen bonds expand the molecular structure when freezing.
This property of water is essential for the environment and plays a pivotal role in the Earth's climate and helps sustain life.
Read the measurement. how many milliliters are shown? 34 ml 38 ml 39 ml 40 ml
Answer:
B
Explanation:
What element on the periodic table has a mass number of 50.9?
List 5 special properties that may help identify certain minerals
PLEASE HELP!!!!!!! :C :C :C
The mixture you separated was a mixture of iron filings, sand, and salt. Based on your understanding of matter, is this mixture a homogenous mixture or heterogenous mixture? How do you know?
A.)homogenous mixture-the parts are uniformly mixed
B.)homogenous mixture-the parts are not uniformly mixed
C.)heterogenous mixture-the parts are uniformly mixed
D.)heterogenous mixture-the parts are not uniformly mixed
Hey Friend, I think the answer is C give me Brainlist If correct thanks
what is the resulting formula unit when magnesium and nitrogen bond
Magnesium (Mg) belongs to group II A in the periodic table with atomic number = 12
Mg Electron configuration = 1s²2S²2p⁶3s²
Nitrogen (N) belongs to group V A in the periodic table with atomic number = 7
N electron configuration= 1s²2s²2p³
Valence electrons for Mg = 2
Valence electrons for N = 5
Mg loses 2 electrons and N gains 3 electrons to complete its octet
Thus, the Formula unit when Mg and N bond is Mg₃N₂
What is the name of PbO?
lead oxide
lead (I) oxide
lead (II) oxide
lead (IV) oxide
Answer:
The answer is lead (II) oxide.
Hope this helps you
What can be removed from an atom if ionization energy is supplied?
an electron
a proton
an ion
a neutron
Identify the limiting reagent in the reaction mixture shown below (red = a2, blue = b2). the balanced reaction is a2+2b2→2ab2
Final answer:
The limiting reagent is the reactant that is completely consumed and determines the amount of product formed in a chemical reaction.
Explanation:
The limiting reagent in a chemical reaction is the reactant that is completely consumed and determines the amount of product that can be formed. In the given equation a2+2b2→2ab2, we need to determine the limiting reagent. To do this, we compare the number of moles of each reactant to the coefficients in the balanced equation. The reactant that has fewer moles than required by the stoichiometry is the limiting reagent.
For example, if we have 2 moles of a2 and 3 moles of b2, we can see that a2 is in excess because it has more moles than required (2 moles versus 1 mole in the balanced equation). Therefore, b2 is the limiting reagent.
How much of a 100.0 g sample of 198au is left after 8.10 days ifi its half life is 2.70 days?
Answer:
The answer is 12
Explanation:
How much water must be evaporated from 240 gallons of a 3 salt solution?
The greater the resistance, the less current there is for a given voltage. True or False
Write a net ionic equation to show that quinoline, c9h7n, behaves as a bronsted-lowry base in water.
Macon is 50 miles from Atlanta. If the time of the trip increases, what happens to the speed? Question 8 options: A:It stays the same because the distance stays the same B: It decreases C: It averages out to the same speed. D: It increase
Given information:
Distance (d) = 50 miles
To determine:
The effect on speed as time increases
Explanation:
Speed can be defined as the ratio of the distance (d) traveled to the time (t) taken to cover that distance
Speed = distance/time -----(1)
In the given example since the distance is fixed an increase in the time of the trip will increase the denominator in equation(1) thereby decreasing the speed.
Ans (B) It decreases
How does the reaction of hydrogen and oxygen to produce energy in a fuel cell differ from their interaction during the direct combustion of hydrogen and oxygen?
In a fuel cell, hydrogen and oxygen produce electrical energy through an electrochemical reaction, with high efficiency and low pollution. Direct combustion of hydrogen and oxygen, on the other hand, yields thermal energy with significant energy loss due to thermodynamic limitations.
Explanation:The reaction of hydrogen and oxygen to produce energy in a fuel cell differs substantially from their interaction during the direct combustion of hydrogen and oxygen. In a fuel cell, hydrogen is oxidized at the anode, and oxygen is reduced at the cathode, which results in water as a byproduct and the production of electrical energy directly via an electrochemical reaction. This process is efficient, producing electricity with up to 50%-75% energy efficiency.
In contrast, the direct combustion of hydrogen and oxygen is a much less efficient process, as it generates energy in the form of heat through a combustion reaction. The energy released in direct combustion, when used to power a heat engine, succumbs to second-law thermodynamics constraints, resulting in at least half of the energy being "wasted" to the surroundings with only about 20%-25% energy efficiency.
Moreover, fuel cells are nonpolluting, significantly reduce greenhouse gas emissions, and contribute to less dependence on fossil fuels. However, challenges like economic viability and dependence on natural gas for hydrogen production still hinder the wide adoption of fuel cell technology for applications like fuel-cell vehicles (FCVs).