Valuable ore deposits and gem crystals are often associated with _____.
a. oceans
b.oil deposits
c. thin crustal areas
d. igneous intrusions
Which of the following shows a possible sequence that leads to the formation of sedimentary rocks?
a. squeezing, heating, bending, folding
b. rising, weathering, erosion
c. weathering deposition, compaction, cementation
d. melting, cooling, crystallization
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Answers
Valuable ore deposits and gem crystals are often associated with igneous intrusions. So for this question the correct option is option “d”. An example like the Pegmatite’s, which are a form of igneous intrusions, is responsible for the creation of variety of gems like topaz and tourmaline.
For the second question:
For this specific question, option “c” seems to be the correct option. Weathering, deposition, compaction, cementation are the possible sequence that leads to the formation of sedimentary rocks.
Valuable ore deposits and gem crystals are often associated with igneous intrusions and The possible sequence that leads to the formation of sedimentary rocks is weathering, deposition, compaction, cementation. Thus, the correct options are option D and C.
Sedimentary rocks are types of rocks that are formed through the accumulation and lithification (compaction and cementation) of sediment particles. Sediments can include fragments of rocks, minerals, organic material, and other debris that are transported and deposited by water, wind, ice, or gravity.
Over time, these sediments undergo compaction and cementation processes, where the particles are pressed together and bound by minerals, creating solid rock formations. Sedimentary rocks often exhibit distinct layers or stratification, and they can contain fossils and provide valuable information about Earth's history and past environments.
Examples of sedimentary rocks include sandstone, limestone, shale, and conglomerate.
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Related Questions
Please help!! I’ll mark u brainly What type of reaction occurs during photosynthesis?OA. Oxidation-reductionOB. DecompositionOC. CombustionOD. Double-displacement
Can someone please help me?
What type of lava/magma is in Galeras volcano
1.The ___________ energy in a mechanical system is determined by adding the potential and kinetic energy together.total massive 2.The initial ___________ energy is equal to zero because the starting point is set at zero height to make things easier.kinetic potential 3.In the example, the final kinetic energy is determined to be ___________ because at the peak height, the ball instantaneously stops.positive zero negative 4.In this system, potential and kinetic energy are ________________ proportional.inversely directly
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Answers
The most comprehensive story of ancient environment is traced by type of Sedimentary rocks. The different ancient environment forms different kinds of sedimentary rocks in terms of shape, size, pattern of sorting etc.
For example:
an ancient environment of lake will have laminated sedimentary rocks while a deserted one will have cross beds or granules.
Not only this we can also have an idea about the kind of flora and fauna of ancient environment based on the fossils. which may be in the form of architectural features.
So they reveal both kind of life / living organism and the kind of earth like river, desert, lake, swamp, lagoon etc.
Answer:
Landscape changes over time.
Explanation:
If there is a picture, this is the correct answer.
What is the number of moles of electrons gained by 3.0 moles of lead ions?
(1) 5.0 mol (3)3.0 mol
(2) 2.0 mol (4) 6.0mol
Answers
Answer : The correct option is, (4) 6.0 mol
Explanation :
The given balanced ionic equation is,
In this reaction, lead undergoes reduction and chromium undergoes oxidation.
- Oxidation reaction : It is the reaction in which a substance looses its electrons. In this oxidation state increases.
- Reduction reaction : It is the reaction in which a substance gains electrons. In this oxidation state decreases.
Half reactions of oxidation and reduction are :
Oxidation :
Reduction :
From the reduction reaction, we conclude that 6 moles of electrons gained by the 3 moles of lead ions.
Hence, the correct option is, (4) 6.0 mole
Answers
The total mass in a reaction is always conserved . Thus the total mass of reactants will be equal to the total mass of products. Hence f the total mass of the products of a reaction is 250 g, the total mass of the reactants is also 250g.
What is law of conservation of mass ?
Mass conservation law is same as that of law of conservation of energy. That is, mass can neither be created nor be destroyed. Therefore, total mass of the system is conserved or it is a constant.
For any type of changes occurring for a substance, let it be a chemical change or physical change the total mass of the initial or original substance is gaines after the change from the new product or new state of the same substance.
Thus, no atoms created or lost in a reaction but they are regrouped to form new products. The new products are formed by bond making or bond breaking in the reactants their weight is completely transferred to the products.
Therefore, if a reaction is having total mass of 250 g in product side then it 250 g was the total mass in reactant side.
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Answer: 250 g
3
8
16
36
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Answer:
36
Explanation:
Hope this helps
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Answer:
36
Explanation:
This is a simple answer, but I assure you that it is 100% correct.
Hope this helps you.
Answers
Final answer:
Ionic compounds are electrically neutral because they consist of positive and negative ions that combine to balance out the charges, resulting in a neutral overall charge. An example is Sodium Chloride(NaCl), where Sodium (Na+) and Chlorine (Cl-) ions combine to form a neutral compound.
Explanation:
Ionic compounds are electrically neutral because of the way they are structured. They consist of positive and negative ions that combine in a way that the total positive charge from the cations (positive ions) is equal to the total negative charge from the anions (negative ions). This balance of charges ensures that the overall charge of the compound is neutral.
For instance, in the case of Sodium Chloride (NaCl), sodium (Na) gives one electron to chlorine (Cl) creating Na+ (a cation) and Cl- (an anion). Since they have opposite charges, they attract each other and form an ionic bond, resulting in an overall neutral compound as the charges balance out.
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Final answer:
Ionic compounds are electrically neutral because the total number of positive charges of the cations equals the total number of negative charges of the anions. The formula of an ionic compound represents the simplest ratio of the numbers of ions necessary to give identical numbers of positive and negative charges.
Explanation:
In every ionic compound, the total number of positive charges of the cations equals the total number of negative charges of the anions. Thus, ionic compounds are electrically neutral overall, even though they contain positive and negative ions. We can use this observation to help us write the formula of an ionic compound. The formula of an ionic compound must have a ratio of ions such that the numbers of positive and negative charges are equal.
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