One student made the incomplete diagram shown below to represent the relationship between sediment, igneous rocks, and metamorphic rocks:


three ovals, labeled from left to right, metamorphic rock, sediment, and igneous rocks respectively.


Which of these is the correct next step to complete the diagram?


Put an arrow labeled heat and melt, pointing from igneous rocks to sediment.


Put an arrow labeled deposition and lithification, pointing from metamorphic rock to sediment.

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Put an arrow labeled cools and crystallizes, pointing from igneous rocks to sediments.


Put an arrow labeled heat and pressure, pointing from sediment to metamorphic rock.

Answer:

A) The solubility of NH3 increases, and the

solubility of KCl increases.

Explanation:

The solubility of ammonia and potassium chloride increases with decrease in temperature from 40°C to 20°C.

Solubility is defined as the ability of a substance which is basically solute to form a solution with another substance. There is an extent to which a substance is soluble in a particular solvent. This is generally measured as the concentration of a solute present in a saturated solution.

The solubility mainly depends on the composition of solute and solvent ,its pH and presence of other dissolved substance. It is also dependent on temperature and pressure which is maintained.Concept of solubility is not valid for chemical reactions which are irreversible. The dependency of solubility on various factors is due to interactions between the particles, molecule or ions.

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Answer:0.233333333

Explanation: Let me be!

Answer:

yea what that guy said is correct I'm pretty sure

The complete lewis structure is shown in the below figure by adding lone pairs and formal charges.

Assign the valence electrons to each atom as dictated by the periodic table placing one electron at each compass direction and then pairing them only after the first four until you have place all of the atom’s valence electrons. (See the Roman numeral above the group/column it is in.)

Arrange the remaining atoms around the central atom and join them to the central atom by a single bond. The more electronegative atoms are typically farther away from the center and attaching hydrogen last is advised.

Lone electrons (not lone pairs) indicate an ability to form more covalent bonds, resulting in either double or triple bonds. Their presence or the lack of a full octet on any atom indicates there is a better Lewis structure.

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Answer:

Formula for density:

D = Mass / Volume

Mass = 5.03g

Volume = 3.24ml

Formula in our case:

D = 5.03 / 3.24

D = 0.31 g/m3

Hope this helped you :D

Answer: In a mixture, substances are generally just mixed and are not completely dissolved. In a solution, substances are dissolved completely and they cannot be filtered out.

Explanation:

Answer:

The amount of sugar please trust me on this one it is NOT the temerature of water!! good luck

Explanation:

If the hydrogen gas is combusted and produces 645L of water vapor at 400 kelvin and 1.75 atm, 2796.96 g mass of the zinc is produced .

Using the ideal gas law equation:

PV = nRT

n = (PV) / (RT)

= (1.75 atm * 645 L) / (0.0821 atm·L/(mol·K) * 400 K)

= 42.71 moles

the balanced equation for the reaction between zinc and hydrochloric acid:

Zn + 2HCl -> \(ZnCl_{2}\)  + \(H_{2}\)

1 mole of zinc produces 1 mole of hydrogen gas. Therefore, the moles of zinc are also 42.71.

The molar mass of zinc is 65.38 g/mol.

Mass of zinc = moles of zinc * molar mass of zinc

= 42.71 moles * 65.38 g/mol

= 2796.96 g

Therefore, the mass of the zinc is 2796.96 grams.

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0.55 g of hydrogen gas (rounded to two significant figures) is produced when 12.4 g of sodium and 27.9 g of water react.

The given unbalanced chemical equation is:

Na + H2O → NaOH + H2

To balance the equation, we need to place a coefficient of 2 in front of NaOH and H2:

2Na + 2H2O → 2NaOH + H2

The balanced equation shows that 2 moles of Na react with 2 moles of H2O to produce 1 mole of H2 gas. Therefore, we need to determine the limiting reactant to determine the amount of H2 gas produced.

First, we need to calculate the number of moles of Na and H2O:

Number of moles of Na = 12.4 g / 23.0 g/mol = 0.539 moles

Number of moles of H2O = 27.9 g / 18.0 g/mol = 1.55 moles

The ratio of moles of Na to H2O is 2:2 or 1:1. Therefore, Na is the limiting reactant because it produces the smallest amount of product.

The number of moles of H2 gas produced is:

Number of moles of H2 = 0.539 moles Na × (1 mole H2 / 2 moles Na) = 0.270 moles H2

Finally, we can convert the number of moles of H2 to grams using the molar mass of H2:

Molar mass of H2 = 2.02 g/mol

Mass of H2 gas produced = 0.270 moles H2 × 2.02 g/mol = 0.5454 g

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Answer:

Sulphur oxide

Explanation:

All of the above oxides with the exception of sulphur oxide are basic oxides and so will not turn blue litmus paper red when dissolved in water. Sulphur oxide, SO2 on the other hand, is an acid anhydride (a non-metallic oxide which dissolves in water to produce acid) rendering it the ability of turning blue litmus paper red when dissolved in water.

Answer:sulpher oxide

Explanation:

All of the compounds except sulpher dioxide are metallic oxide which means basic oxide and base change red litmus paper to blue while acid change blue to red so the answer is the acidic oxide or sulpher dioxide

HIO₃ is a strong acid, it will release a higher concentration of H⁺ ions, leading to a greater concentration of hydroxide ions compared to the other species listed. Hence, option C is correct.

The species that will produce the greatest concentration of hydroxide ions in solution is option C: HIO₃.

HIO₃ is an acid called iodic acid. When it dissolves in water, it will dissociate to release H⁺ ions and IO₃⁻ ions. The H⁺ ions can react with water molecules to form hydronium ions (H₃O⁺), while the IO₃⁻ ions do not directly produce hydroxide ions.

However, in the presence of excess water, the hydronium ions can react with water in a reversible reaction to generate hydroxide ions (OH⁻). This reaction is known as the autoionization of water:

2H₃O⁺ (hydronium ions) ⇌ H₂O + H₃O⁺ + OH⁻

As a result, the concentration of hydroxide ions (OH⁻) increases in the solution. Since HIO₃ is a strong acid, it will release a higher concentration of H⁺ ions, leading to a greater concentration of hydroxide ions compared to the other species listed.

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Answer: D

Explanation:

To draw the Lewis structure for sulfate (SO₄²⁻) with minimized formal charges and determine the total likely resonance structures, follow these steps:

1. Identify the central atom: Sulfur (S) is the central atom in the sulfate ion.
2. Count the total number of valence electrons: Sulfur has 6, each oxygen has 6, and there are 2 extra electrons due to the 2- charge. So, the total number of valence electrons is 6 + 4(6) + 2 = 32.
3. Connect the central atom to the surrounding atoms with single bonds: Connect the sulfur atom to each of the four oxygen atoms using single bonds. This uses up 8 valence electrons (2 for each bond).
4. Distribute the remaining valence electrons to complete the octets of the surrounding atoms: 32 - 8 = 24 valence electrons are left. Distribute them to the four oxygen atoms to complete their octets (6 electrons for each oxygen atom).
5. Check for the need for multiple bonds to satisfy the octet rule for the central atom: Sulfur has 8 electrons around it (1 from each single bond), so the octet rule is satisfied.

Now, the Lewis structure is complete with minimized formal charges. However, there are multiple resonance structures for SO₄²⁻. Since sulfur can form double bonds with any of the four oxygen atoms, there are a total of 4 likely resonance structures for SO₄²⁻, with one double bond in each resonance structure and the remaining oxygen atoms having single bonds.

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pCO2 is an important factor that affects various aspects of water chemistry and the impacts of ocean acidification. When pCO2 increases, the concentration of total CO2 dissolved in water also increases. This leads to changes in pH, which decreases due to increasing atmospheric CO2 concentration.

When pCO2 rises, the concentration of only CO2 dissolved in water increases. The dissolved CO2 forms carbonic acid, which contributes to the acidification of the ocean. This increase in CO2 affects the equilibrium between CO2, HCO3-, and CO3^2-, shifting it towards higher levels of dissolved CO2 and H+ ions, resulting in a lower pH.

In terms of the impacts of ocean acidification on different organisms, the effects can vary depending on their specific needs. An organism that requires CO2 is likely to fare better under ocean acidification since the increase in dissolved CO2 can provide them with a favorable environment. However, organisms that rely on HCO3- or CO3^2- may fare worse under ocean acidification, as the lower pH interferes with the availability of these carbonate ions, which are essential for shell formation and calcification in some marine organisms.

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Answer:  \(CaCO_3(s)\rightarrow CaO(s)+CO_2(g)\) , 0.533 L

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

\(CaCO_3(s)\rightarrow CaO(s)+CO_2(g)\)

According to avogadro's law, 1 mole of every substance occupies 22.4 L of volume at STP.

Number of moles =\(\frac{\text {given mass}}{\text {Molar mass}}\)

moles of calcium carbonate = \(\frac{2.38g}{100g/mol}=0.0238mol\)

As 1 mole of calcium carbonate produces = 22.4 L of carbon dioxide at STP

Thus 0.0238 moles of calcium carbonate produces =\(\frac{22.4 L}{1}\times 0.0238=0.533L\) of carbon dioxide at STP

The balanced equation is \(CaCO_3(s) \rightarrow CaO(s) + CO_2(g)\)

The number of liters of carbon dioxide that should be produced is 0.533L

As per this law, the mass could neither be developed nor be destroyed. So, the mass of products should be equivalent to the mass of reactants. The number of atoms of every element has to be the similar on reactant and product sides. Due to this, the chemical equations are balanced.

\(CaCO_3(s) \rightarrow CaO(s) + CO_2(g)\)

As per this law,  1 mole of every substance occupies 22.4 L of volume at STP.

So,

We know that

Number of moles = \(given\ mass \div molar\ mass\)

Now the moles of calcium carbonate is \(= 2.38 \div 100\) = 0.0238 mol

Since 1 mole of calcium carbonate generated = 22.4 L of carbon dioxide at STP

So, 0.0238 moles of calcium carbonate generated

\(= 22.4 \div 1 \times 0.0238 \\\\= 0.533L\)

 of carbon dioxide at STP

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The major difference between the aldol condensation and the Claisen condensation reactions is the nature of the reactants involved. It's important to note that the reactions mentioned here are simplified representations.  

In the aldol condensation, one of the reactants is an aldehyde or a ketone, which contains a carbonyl group. The other reactant is usually a compound containing an enol or an enolate group. The reaction occurs through a nucleophilic addition of the enol/enolate to the carbonyl carbon, followed by elimination of water. This leads to the formation of a β-hydroxy carbonyl compound.

To summarize:
- In the aldol condensation, one reactant is an aldehyde or a ketone, while the other reactant is an enol/enolate compound.
- In the Claisen condensation, both reactants are esters or ester-like compounds.
- The aldol condensation leads to the formation of a β-hydroxy carbonyl compound, while the Claisen condensation results in a β-keto ester compound.

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There are three primary ways that the animal cell membrane keeps things in balance: enabling the membrane to flow fluidly, controlling the process by which water moves from a high concentration to a low concentration, and maintaining particular ion concentrations.

Negative feedback loops keep homeostasis in check. Positive feedback loops may be necessary for life to exist even when they actually push the organism further away from homeostasis. The neural and endocrine systems of mammals regulate homeostasis.

For instance, an animal must use the thermoregulation mechanism to control body temperature. Cold-adapted organisms, like the polar bear, have physical characteristics that enable them to survive extreme cold and retain body heat. Fur, feathers, blubber, and fat have structures that help with this kind of insulation.

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The molar heat of fusion of iron is 2,747.7 cal/mol. Thus, option A is correct.

Molar heat of fusion is the amount of heat required to convert 1 gram of substance from liquid to solid.

The molar heat of fusion is given as:

\(q=\dfrac{m}{molar\;mass} \;\times \Delta H\)

The given sample has mass, m 200 g.

The molar mass of iron is 55.845 g/mol

The amount of heat released, q is  9,840 cal

The molar heat of fusion (\(\Delta H\)) is given by substituting the values as:

\(\rm 9,840\;cal= \dfrac{200\;g}{55.845 \;g/mol} \times\;\Delta H\\\\\Delta H=\dfrac{9,840\;cal\;\times\;55.845 \;g/mol}{200\;g} \\\\\Delta H=2,747.7 \;cal/mol\)

The molar heat of fusion of iron is 2,747.7 cal/mol. Thus, option A is correct.

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Answer:

he molar heat of fusion of iron is 2,747.7 cal/mol.

Explanation:

Methicillin-resistant Staphylococcus aureus (MRSA) is a bacterium that appears as cocci, which are spherical or round in shape.

Staphylococcus aureus is a Gram-positive bacterium that typically forms clusters of spherical cells. MRSA is a strain of Staphylococcus aureus that has developed resistance to the antibiotic methicillin and other beta-lactam antibiotics. As a bacterium, MRSA exists as individual cells, and each cell has a spherical shape, resembling a coccus.

The shape of methicillin-resistant Staphylococcus aureus (MRSA) is cocci, which refers to a spherical or round shape.

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Answer:

As the plates travel horizontally past one other, no crust is formed nor destroyed.

Explanation: tectonic plates

Answer:

(b) that is hydrophobic

Explanation:

e.g, alanine

Cause, Alanine possess hydrophobic side chain and the most appropriate answer is (d) part......

Alanine is an aliphatic amino acid, because the side-chain connected to the α-carbon atom is a methyl group (-CH3), alanine is the simplest α-amino acid after glycine. The methyl side-chain of alanine is non-reactive and is therefore hardly ever directly involved in protein function..

Hope it will help you☺☺☺☺☺

Answer:

(b) that is hydrophobic

Explanation:

e.g, alanine

Cause, Alanine possess hydrophobic side chain and the most appropriate answer is (d) part......

Alanine is an aliphatic amino acid, because the side-chain connected to the a-carbon atom is a methyl group (-CH3), alanine is the simplest a-amino acid after glycine. The methyl side-chain of alanine is non-reactive and is therefore hardly ever directly involved in protein function...

Hope it helps....

Answer:

Okay so I think its surface area, rock composition (what makes up the rock), and location influence (like is the rock near a river or some location that may cause whethering)

**I learned this in elementary so I dont remeber that much hope I helped

Answer:

ice, water wind

Explanation:

Answer:

B. The reactants form additional unexpected products.

Explanation:

The variable that represents thermal energy in the equation Q = mcΔT is Q. Here c is  specific heat capacity.

In the equation Q = mcΔT,

Q represents the thermal energy transferred between two objects or systems.

The letter m represents the mass of the object, c represents the specific heat capacity of the object, and ΔT represents the change in temperature of the object.

The equation Q = mcΔT is a common formula used in thermodynamics to calculate the amount of thermal energy transferred between two objects or systems. Q, which is measured in joules (J), represents the amount of energy transferred as heat. The letter m represents the mass of the object in kilograms (kg), and c represents the specific heat capacity of the object in joules per kilogram Kelvin (J/kgK). The value of ΔT, which is measured in Kelvin (K) or Celsius (°C), represents the change in temperature of the object.

To use this equation, you need to know the mass of the object, the specific heat capacity of the object, and the change in temperature of the object. Once you have these values, you can calculate the amount of thermal energy transferred using the equation Q = mcΔT.

In conclusion, Q is the variable that represents thermal energy in the equation Q = mcΔT. This equation is useful for calculating the amount of energy transferred as heat between two objects or systems.

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Answer:

Ba

Explanation:

Atomic radius increases going right to left, and up to down.

So the closest element to the bottom left corner is Ba.

Answer:

To ensure the most accurate mass reading when using a properly stabilized balance, you should:

Answer:

The pH and pOH of a 2.2*10⁻³ HBr solution is 2.66 and 11.34  respectively.

Explanation:

pH - short for hydrogen potential - is a measure of the acidity or alkalinity of a solution. So the pH is a parameter that indicates the concentration of hydrogen ions [H]⁺ that exist in a solution.

The pH is expressed as the negative base 10 logarithm of the hydrogen ion concentration. This is represented by:

pH= - log [H⁺]

pH is measured on a scale of 0 to 14. On this scale, a pH value of 7 is neutral, which means that the substance or solution is neither acidic nor alkaline. A pH value of less than 7 means that it is more acidic, and a pH value of more than 7 means that it is more alkaline.

HBr is a strong acid. Then, in aqueous solution it will be  totally dissociated. So the proton concentration is equal to the initial concentration of  acid:

[H⁺]= [HBr]= 2.2*10⁻³ M

So:

pH= - log (2.2*10⁻³)

pH= 2.66

On the other hand, pOH is a measure of the concentration of hydroxyl ions in a solution. The sum of pH and pOH equals 14:

pH + pOH= 14

2.66 + pOH= 14

pOH= 14 - 2.66

pOH= 11.34

The pH and pOH of a 2.2*10⁻³ HBr solution is 2.66 and 11.34  respectively.

Heat energy is released into the environment as the rock's temperature rises as a result of conduction, creating an air bubble that is warmer than the surrounding air. This air bubble ascends into the upper atmosphere.

Heat transfer through conduction is not feasible since there is no medium separating the surface of the Earth from the Sun. The method of heat transfer that takes place without the aid of a medium is called radiation. So, we can say that radiation is how the heat from the Sun reaches the Earth.

Convection causes temperature disparities by forcing portions of a liquid or gas to heat up or cool down faster than their surrounds.

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The percentage of volume of ethanol is 9.5%.

Volume/volume percentage (v/v% or percent v/v) is a unit used to express how much of a material is present in a solution. It is defined as the volume of the solute divided by the sum of the volumes of the solution, multiplied by one hundred. Examples: The average alcohol concentration (v/v%) of wine is 12 percent.

The formula used to get the volume of ethanol in percentages is

Percent of volume of ethanol = (volume of solute / total volume) *  100

Percent volume of Ethanol = (volume of ethanol  / total volume)  * 100

                                            =  95mL  / 1000mL  *  100

                                            = 9.5%

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