Global ocean conveyor belt circulation is driven by slight differences in seawater density as the density of seawater determines its tendency to move vertically. At what latitudes is water column instability great enough to result in the sinking of surface waters to thousands of meters of depth?

Based on factors affecting solution formation;

A solution is a substance formed when a substance known as solute dissolves in another substance know as solvent.

Factors that affect solution formation include:

Strong solvent-solute intermolecular forces favors solution formation.

Increase in entropy favours solution formation

Decrease in enthalpy favours solution formation.

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The allowable set of quantum numbers for an electron among the given options is n = 2, l = 1, ml = -1, and ms = +1/2

Here's a step-by-step explanation:
1. The principal quantum number (n) must be a positive integer (n = 1, 2, 3, ...).
2. The azimuthal quantum number (l) must be an integer ranging from 0 to n-1.
3. The magnetic quantum number (ml) must be an integer ranging from -l to +l.
4. The electron spin quantum number (ms) can be either +1/2 or -1/2.

In the given option, n = 2, l = 1 (which is in the range of 0 to n-1), ml = -1 (which is in the range of -l to +l), and ms = +1/2 (which is either +1/2 or -1/2). Thus, this set of quantum numbers is allowable for an electron.

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Answer:

The answer is option A.

They are isotopes of the same atom.

Hope this helps you

Answer:

2. the shape of the galaxy

Explanation:

There are four classifications of galaxies and these are: spirals, barred spirals, ellipticals and irregulars. It was Edwin Hubble, an American Astronomer who identified them. They were given such names owing to their shapes. For example, the spiral galaxy looks like it is rotating while the barred spiral galaxy also looks rotating yet it has a bar at the center. Elliptical galaxies have an elliptical shape, similar to that of an elongated circle or an egg. Irregular galaxies don't stick to a particular shape.

Answer:

b

Explanation:

When the reaction is balanced, the balanced equation is: Cr₂O₇²⁻(aq) + 6Sn²⁺(aq) + 14H⁺(aq) → 2Cr³⁺(aq) + 6Sn⁴⁺(aq) + 7H₂O(ℓ). The coefficient of Sn²⁺(aq) is 6.

A coefficient is a number placed in front of a chemical symbol or formula. It shows how many atoms or molecules of the substance are involved in the reaction. For example, two molecules of hydrogen would be written as 2 H2, and two molecules of water would be written 2 H2O. A coefficient is a number placed in front of a chemical symbol or formula. It shows how many atoms or molecules of the substance are involved in the reaction. For example, two molecules of hydrogen would be written as 2 H2, and two molecules of water would be written as 2 H2O.

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The work done by n moles of a van der Waals gas in an isothermal reversible expansion from Vi to Vf at T can be calculated using the following formula:: W = -nRTln(Vf/Vi) - n^2a/(Vf - b) + n^2a/(Vi - b), where R is the universal gas constant, a and b are the van der Waals constants, and ln is the natural logarithm.

In an isothermal process, the temperature T remains constant, so we can simplify the equation as follows:

W = -nRTln(Vf/Vi) - n^2a/(Vf - b) + n^2a/(Vi - b)

= -nRTln(Vf/Vi) + nRTln[(Vf-b)/(Vi-b)]

= -nRTln[(Vf(Vi-b))/(Vi(Vf-b))]

= -nRTln[(1-b/Vi)/(1-b/Vf)]

Therefore, the work done by n mole van der Waals gas in isothermal reversible expansion from Vi to Vf at T is given by:

W = -nRTln[(1-b/Vi)/(1-b/Vf)]

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Answer:

strawberries appear red.

Explanation:

In other words, because we know strawberries are supposed to be red, our brain perceives a blue filter over the image and corrects for it, making the strawberries appear red

Answer:

A

Explanation:

The reason it is distillation is due to the fact that we can use distillation to heat the ocean water. As water has a lower boiling point than the salt solution, it evaporates and the salt stays behind.

Large organic molecules are usually assembled by polymerization of a few kinds of simple subunits belonging to the same class of chemicals.  The following is an exception to this statement is:

c) Steroids

Large organic molecules, such as proteins, nucleic acids, and carbohydrates, are typically formed through the process of polymerization. Polymerization involves the repetitive bonding of smaller subunits, known as monomers, to form a long chain or polymer. These monomers usually belong to the same class of chemicals, meaning they have similar structures and functional groups.

In the case of DNA, the monomers are nucleotides, which consist of a sugar molecule, a phosphate group, and a nitrogenous base. The repetitive bonding of nucleotides creates a long chain of DNA.

Similarly, cellulose, a major component of plant cell walls, is composed of repeating units of glucose monomers. The polymerization of glucose molecules forms long cellulose chains.

Contractile proteins, such as actin and myosin found in muscle fibers, are also assembled through the polymerization of monomers. These monomers, called amino acids, are linked together by peptide bonds to form polypeptide chains, which then fold into the functional protein structure.

However, steroids, including molecules like cholesterol, estrogen, and testosterone, are an exception to this general pattern of polymerization. Steroids have a distinct structure consisting of four fused carbon rings. They are not formed through repetitive bonding of identical subunits like proteins or nucleic acids. Instead, steroids are synthesized through specific biosynthetic pathways in living organisms.

While steroids play crucial roles in various physiological processes, they do not follow the typical pattern of polymerization seen in other organic polymers.

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The complete question is:

Large organic molecules are usually assembled by polymerization of a few kinds of simple subunits belonging to the same class of chemicals. which of the following is an exception to this statement?

a) DNA

b) cellulose

c) steroids

d) a contractile protein

Here is a picture that might help :)

Answer:

A. carrots look better when given more water

Answer:

physical

Explanation:

The change is physical.

A physical change involves a reversible change to the physical properties of substances, whereas a chemical change involves an irreversible change to the chemical properties of substances through a chemical reaction.

The dissolution of common salt is a physical change because the common salt can be retrieved by evaporating off the water. This is what was manifested by the deposition of common salt crystals on the wick.

Answer:

C) protons and neutrons

Explanation:

im pretty sure it is c

Phosphorus trihydride, PH₃, gas is produced when phosphorus, P₄, is reacted with hydrogen gas. if 23.89 grams of hydrogen,  H₂, is reacted with excess phosphorus gas, the pressure of the PH₃ gas produced is 28.9 atm.

To calculate the pressure of PH₃ gas produced when 23.89 grams of H₂ reacts with excess P₄ gas, we need to first balance the chemical equation, then calculate the moles of PH₃ produced, and finally use the ideal gas law to find the pressure. The balanced chemical equation is:

P₄ + 6H₂ -> 4PH₃

From the balanced equation, we see that 6 moles of H₂ react with 1 mole of P₄ to produce 4 moles of PH₃. So, the number of moles of PH₃ produced can be calculated as follows:

moles of PH₃ = (23.89 g H2) / (2.016 g/mol H₂) x (1 mol PH₃ / 6 mol H₂) = 0.986 mol PH₃

Using the ideal gas law, we can find the pressure of the PH₃ gas produced:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin.

First, we convert the temperature from Celsius to Kelvin:

T = 75.0 + 273.15 = 348.15 K

Plugging in the values, we get:

P = nRT / V = (0.986 mol) x (0.0821 L·atm/mol·K) x (348.15 K) / (3.15 L) = 28.9 atm

Therefore, the pressure of the PH₃ gas produced is 28.9 atm.

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Answer:

The cell potential is 0.0296V

Explanation:

Please see the attachment below

By using a sensitive mass balance, it is indeed possible to track the progress of a reaction that generates a gas, so it is True. This is due to the principle of conservation of mass, which states that mass is neither created nor destroyed during a chemical reaction.

A sensitive mass balance can accurately measure even small changes in mass. By continuously monitoring the mass of the reaction vessel, any increase in mass can be attributed to the production of the gas. This provides a quantitative measurement of the reaction's progress over time.

The sensitivity of the mass balance is crucial in this context, as it allows for the detection of minute changes in mass. The precision of the instrument ensures that the measurements are reliable and can be used to follow the kinetics of the reaction.

This method is particularly useful for reactions that generate gases as one of the products, such as the decomposition of certain compounds or the release of carbon dioxide during fermentation processes.

In conclusion, a sensitive mass balance can be followed to track the progress of a gas-producing reaction by measuring the increasing mass of the reaction vessel, which reflects the production of gas over time.

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C3H8(g) plus 5O2(g) plus 3 CO 2 (g) plus 4 H 2 O(l)

The difference between the moles of gaseous products and gaseous reactants is known as n.

Δn=(3)−(1+5)=−3

ΔH=ΔE+ΔnRT

ΔH−ΔE=ΔnRT

H is equal to 3RT C 3 H 8 (g) + 5O 2 (g) + 3CO 2 (g) + 4H 2 O.(l).

The difference between the moles of gaseous products and gaseous reactants is known as n.

Δn=(3)−(1+5)=−3

ΔH=ΔE+ΔnRT

ΔH−ΔE=ΔnRT

ΔH−ΔE=−3RT

The total enthalpy of a chemical reaction is equal to the sum of the enthalpy changes for each of the reaction's steps, according to Hess's Law, also known as "Hess's Law of Constant Heat Summation". By dissecting a reaction into its individual steps, each of which has a known enthalpy value, you can determine the enthalpy change.

If you want CO2 as a product, leave Equation 1 alone. If you want to cancel 2S and also want 2SO2 on the product side, multiply Equation 2 by 2.

The equation reads: C(s) + O2(g) = CO2(g).

the three updated equations together. 2S and C both cancel.

For the complete response, add the three enthalpies.

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As a result, 1.5 moles of glycerol absorb about 1.99 Joules of heat when their temperature rises from 25 to 70 degrees Celsius.

Glycerin is a straightforward polymer. The molecular formula of this solvent is C3H8O3. It is sometimes referred to as glycerine or glycerol.

We can use the following formula to determine how much heat 1.5 moles of glycerol absorbed: q = n × C × ΔT

Glycerol has a specific heat capacity of 2.43 J/g°C. This needs to be divided by the molar mass of glycerol in order to be converted to Joules per mole per degree Celsius:

C = (2.43 J/g°C) / (92.09 g/mol)

C = 0.0264 J/mol°C

The change in temperature can then be calculated as follows:

ΔT = (70°C - 25°C) = 45°C

We can now enter the values into the formula as follows:

q = (1.5 mol) × (0.0264 J/mol°C) × (45°C)

q = 1.99 J

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Answer:

The correct answer is - 1:50.

Explanation:

Given:

Model toy car = 0.12 m

Actual size of car = 6 m

The ratio of model and actual car size = ?

Solution:

We know that 1 m = 100 cm

then, Model toy car - 0.12*100 = 12 cm

and size of the actual car - 6*100 - 600 cm

Then the ratio of  model and actual car size = model car size/ actual car size

= 12/600

= 1/50

Thus, the correct answer is - 1:50.

Answer:

Explanation:

Decomposition reaction, also known as analysis or dissociation, is a type of chemical reaction in which a compound breaks down into simpler substances or elements. In this reaction, a single reactant undergoes a chemical change and produces two or more products.

The decomposition reaction can be represented by the general equation:

AB → A + B

Where AB is the reactant, and A and B are the products. The reactant AB is usually a compound, and it breaks down into its constituent elements or simpler compounds.

There are different types of decomposition reactions, including:

Thermal decomposition: It occurs when a compound is heated, resulting in its decomposition into simpler substances. For example, the thermal decomposition of calcium carbonate (CaCO3) produces calcium oxide (CaO) and carbon dioxide (CO2):

CaCO3 → CaO + CO2

Electrolytic decomposition: It takes place when an electric current is passed through an electrolyte, causing it to break down into its component ions. For instance, the electrolysis of water (H2O) leads to the decomposition into hydrogen gas (H2) and oxygen gas (O2):

2H2O → 2H2 + O2

Photochemical decomposition: It occurs when a compound undergoes decomposition due to exposure to light energy. Chlorine gas (Cl2) can decompose into chlorine atoms (Cl) under the influence of light:

Cl2 → 2Cl

These are just a few examples of decomposition reactions. They are important in various chemical processes and are used in industries, laboratory experiments, and natural phenomena. By understanding and controlling decomposition reactions, scientists can gain insights into the behavior of different compounds and develop practical applications in fields such as chemistry, materials science, and environmental science.

Answer:

Explanation:

reaction in which a compound breaks down into simpler substances or elements

The expected product is (R)-2-bromobutane.

Stereochemistry plays a crucial role in determining the outcome of chemical reactions. In the given question, the stereochemistry of the intermediate I needs to be considered to determine the expected product.

The intermediate I indicates a chiral carbon center, denoted by an asterisk (*), which means it has four different substituents attached to it. This chiral carbon results in two possible stereoisomers: (R)-2-bromobutane and (S)-2-bromobutane.

When a reaction occurs at a chiral carbon, the stereochemistry of the reactant is usually retained in the product, assuming no racemization or inversion takes place during the reaction. In this case, the intermediate I has an (R) configuration, which implies that the product will also have an (R) configuration.

Therefore, the expected product is (R)-2-bromobutane.

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Answer:

Sandstone.

Explanation:

There is some rock and sand on this type of stone, that is sandstone. Sandstone is stone that is mixed of sand and stone.

hope this helps.

Answer:

D

Explanation:

Atoms make up all matter on earth, basically atoms make up everything, even air.

An experimental plot of ln(p vap) vs. 1/t is obtained in lab for an unknown liquid. the slope of the best-fit line for the graph is -4105 k. The enthalpy of vaporization for the liquid is 34.11 kJ/mol.

To find the enthalpy of vaporization for the liquid in kJ/mol, you can use the Clausius-Clapeyron equation in the form of ln (P vap) = -ΔHvap / R * (1/T) + C, where ΔHvap is the enthalpy of vaporization, R is the ideal gas constant, and T is the temperature.
Step 1: Identify the given variables
The slope of the best-fit line, -4105 K, is equivalent to -ΔHvap / R.
Step 2: Find the value of ΔHvap / R
Since the slope of the best-fit line is -4105 K, we have -ΔHvap / R = -4105.
Step 3: Solve for ΔHvap
To find ΔHvap, you need to multiply both sides of the equation by -R:
ΔHvap = 4105 * R
Now, we need to use the value of R in the appropriate units. In this case, we want the enthalpy of vaporization in kJ/mol, so we will use R = 8.314 J/(mol*K) and convert it to kJ/(mol*K) by dividing by 1000:
R = 8.314 / 1000 = 0.008314 kJ/(mol*K)
Step 4: Calculate ΔHvap
ΔHvap = 4105 * 0.008314 = 34.11 kJ/mol
The enthalpy of vaporization for the liquid is 34.11 kJ/mol.

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Answer:

silicon

Explanation:

Carbon and silicon BOTH come from Group 14 of the Periodic Table , i.e. both formally have the same number of valence electrons, 4 such electrons

Answer:

silicon

Explanation:

Carbon and silicon both come from Group 14 of the Periodic Table

Answer:

files  

Explanation:

i had to answer the same question

Peroxides species shows the correct charge of the oxide ion.

As predicted by the two partially filled outer orbitals, oxygen assumes a negative oxidation state in all of its molecules. The oxide ion O2 is produced when electron transport fills these orbitals. It is thought that each oxygen in peroxides (species that contain the ion O2 2) has a charge of 1.

The carbon and hydrogen atoms have a slight positive charge, while the oxygen atom has a slight negative charge.

There are six valence electrons in the atom of oxygen. The oxygen atom requires two additional electrons in order to complete its valence shell. Adding two more electrons gives the oxygen ion a charge of two because each electron has a single negative charge.

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Answer:

The answer to your question is D. 4.5 seconds hope this helps ;)