4. What is the Osmotic Pressure of a 2.36 Molar Cr(NO3), solution at 293 K? R = 0.0821

70 cubic centimeters of 6% saline solution should kent mix with 70 cubic centimeters of a 16% saline solution to produce 11% saline solution

To determine the amount of a 6% saline solution that should be mixed with 70 cubic centimeters of a 16% saline solution to obtain an 11% saline solution, we can use a mixture equation based on the principle of conservation of mass.

Let's assume x represents the volume of the 6% saline solution to be added in cubic centimeters.

The amount of salt (in grams) in the 16% saline solution is given by:

Amount of salt in 16% solution = 70 cubic centimeters * 0.16 (salt concentration)

The amount of salt (in grams) in the 6% saline solution to be added is given by:

Amount of salt in 6% solution = x cubic centimeters * 0.06 (salt concentration)

The total amount of salt (in grams) in the resulting 11% saline solution is given by:

Amount of salt in resulting solution = (70 + x) cubic centimeters * 0.11 (salt concentration)

According to the principle of conservation of mass, the amount of salt in the initial solution must be equal to the amount of salt in the resulting solution. Therefore, we can set up the following equation:

Amount of salt in 16% solution + Amount of salt in 6% solution = Amount of salt in resulting solution

70 * 0.16 + x * 0.06 = (70 + x) * 0.11

11.2 + 0.06x = 7.7 + 0.11x

0.11x - 0.06x = 11.2 - 7.7

0.05x = 3.5

x = 3.5 / 0.05

x = 70

Therefore, Kent should mix 70 cubic centimeters of the 6% saline solution with the 70 cubic centimeters of the 16% saline solution to produce an 11% saline solution.

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Answer:

11.01

Explanation:

because yes :)

Answer

Explanation

Note: The reaction is a double replacement reaction in which two soluble ionic compounds react in an aqueous solution to form an insoluble solid.

In this case, a solution of sodium carbonate, Na2CO3, will contain

The complete balanced equation that occurs when sodium carbonate is added to hard water is

Answer:

0.0043

0.004 if to one significant figure

0 to one decimal place.

Answer:

Explanation: One example of a scientific argument explaining the advantage of a particular type of moth is the case of the peppered moth (Biston betularia) in England during the Industrial Revolution. Before the widespread pollution of the Industrial Revolution, the light-colored form of the peppered moth was more common because it was well camouflaged against lichen-covered tree bark. However, as industrialization caused air pollution and killed lichens, the bark of trees became darker, making the dark-colored form of the moth more camouflaged and therefore more successful at avoiding predation. This change in the environment gave the dark-colored moth an advantage over the light-colored moth because it was better camouflaged against the new background, making it less likely to be eaten by predators such as birds.

The advantage of the dark-colored form of the peppered moth was due to natural selection, which is the process by which organisms with traits that are better suited to their environment are more likely to survive and reproduce, passing on their advantageous traits to their offspring. In this case, the dark-colored moths had an advantage because they were more likely to survive and reproduce in the polluted environment, passing on their genes for dark coloration to the next generation. Over time, the frequency of the dark-colored form increased, while the light-colored form decreased, demonstrating the power of natural selection to shape the evolution of a species in response to environmental changes.

These facts serve as the best examples of how the tissues, organs, and organ systems in all living things collaborate to maintain homeostasis because contractile vacuoles are organelles that regulate water balance

Homeostasis is the term used to describe the body's need to achieve and preserve a specific state of equilibrium. A physiologist by the name of Walter Cannon first used the term in 1926. The tendency of the body to keep internal conditions, like blood sugar and temperature, at essentially constant and stable levels is known as homeostasis.

Between cells and an entire organ, there is a biological organisational level called tissue. An assembly of comparable cells and their extracellular matrix from the same origin that work together to perform a particular function is referred to as a tissue.

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hi myself thx for the answers

Answer:true

Explanation:

The extra step taken when cleaning up an acid or base spill is :

Acid and Base spills are treated with an extra caution during cleanup to prevent injury to skin and this is because strong acids are;

After neutralization, clean up the spill with a towel ( usually paper towel ) and avoid using a strong base to neutralize a strong acid as well.

Hence we can conclude that Neutralizing the Acid/base spill with with a weaker base such as sodium Bicarbonate or weak acid respectively  is the extra step.

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Answer: Whats ur Question?

Explanation:

Answer:

b- 232%

Explanation:

Renewable energy consumption by energy source in 2006 = 6.659 quadrillion Btu

Renewable energy consumption by energy source in 2010 = 8.049 quadrillion Btu.

In 2006, wind energy = 4%

∴ wind energy = 4% x 6.659 = 0.26636

In 2010, wind energy = 11%

∴ wind energy = 11% x 8.049 = 0.88539

∴ Percent increase = (final number - initial number) ÷ (initial number) x 100

% increase = [(0.88539 - 0.26636) ÷ 0.26636} x 100 = 232.4035% ≈ 232%.

Answer = 232%.

Answer:

8000 kilogram/cubic meter

Explanation:

I used an online calculator.

Hope I helped!

The pressure of 1520.0 mmHg is equivalent to 2.00 atm, which is answer choice B.

The pressure measurement is a key parameter in various fields, including chemistry, physics, engineering, and meteorology. Different units are used to express pressure, including millimeters of mercury (mmHg) and atmospheres (atm).

In the given problem, the pressure is measured as 1520.0 mmHg using a barometer. To express this pressure in atmospheres, we need to use a conversion factor. The conversion factor between mmHg and atm is:

1 atm = 760 mmHg

This means that to convert pressure from mmHg to atm, we need to divide the pressure value in mmHg by 760.

Using this conversion factor, we can express the given pressure of 1520.0 mmHg in atm:

1520.0 mmHg ÷ 760 mmHg/atm = 2.00 atm

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Answer:Plate Tectonics : Different Plate Boundaries Create Different Landforms and ... Plate Boundary: CONVERGENT ... As the MORE DENSE oceanic plate (OP) subducts under ... Illustration of what is happening ... Two continental plates (CP) move away from each other ... Sea Floor spreading occurs at these mid-ocean ridges.

Explanation:

The landforms created in the subducting plate boundary are mid ocean ridges, fold mountains and islands. Volcanoes and earth quakes are common in these regions.

Plate boundaries are regions of intersections between two tectonic plates. There are three different  type of plate boundaries, namely convergent boundaries, divergent boundaries and transform boundaries.

In convergent plate boundaries, two tectonic plates moves close to each other and converge. These plate boundaries gives rise to different types of land forms such as fold mountains, islands etc.

Earthquakes and volcanoes are common in convergent plate boundaries. These type of  plate movement is caused by the convection currents in the mantle.

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Answer:

C) are a result of hydrogen bonding

Explanation:

Cohesion, surface tension, and adhesion are the properties of water molecules that are a result of hydrogen bonding.

The difference in binding energy per nucleon between 23/11 Na and 23/12 Mg can be calculated by finding the total binding energy for each isobar and dividing it by the respective number of nucleons.

To calculate the difference in binding energy per nucleon between the isobars 23/11 Na and 23/12 Mg, we need to find the total binding energy for each isobar and then divide it by the respective number of nucleons.

The atomic mass of 23/11 Na is 23, which means it has 23 nucleons (protons and neutrons). The atomic number is 11, indicating it has 11 protons.

The atomic mass of 23/12 Mg is also 23, so it has 23 nucleons. However, the atomic number is 12, indicating it has 12 protons.

We can use the equation:

Binding Energy per Nucleon = (Total Binding Energy) / (Number of Nucleons)

To find the total binding energy, we can consult a table or use an approximate average value. Let's assume the average binding energy per nucleon for both elements is 8.5 MeV (million electron volts).

For 23/11 Na:

Binding Energy per Nucleon = (Total Binding Energy of Na) / (Number of Nucleons)

                         = (8.5 MeV) / (23 nucleons)

For 23/12 Mg:

Binding Energy per Nucleon = (Total Binding Energy of Mg) / (Number of Nucleons)

                         = (8.5 MeV) / (23 nucleons)

The difference in binding energy per nucleon can then be calculated by subtracting the value for Na from the value for Mg.

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Answer:

● They have more than two carbons that are bonded to only one other

Explanation:

They have carbons bonded in a single row from one end of the molecule to the other end of the molecule. ... The straight-chain alkane has two more hydrogen atoms than the cycloalkane

Answer:

D. They have carbons bonded in a single row from one end of the molecule to the other end of the molecule.

Explanation:

I got it wrong when I chose C - They have more than two carbons that are bonded to only one other carbon. So yeah p.s UNUS ANNUS

Neoclassical economics focuses on supply and demand as the driving forces behind the production and consumption of goods and services.

It should be noted that Neoclassical economics emphasizes the choices of consumers. Thus, in neoclassical economics, the value of products and services is above the costs of production.

Hubbert's peak theory states that the rise, peak, and decline of fossil fuel production with revolutions in new technology will be longer than originally predicted before the oil reserves run out

The tragedy of the commons is an economic problem of overconsumptio, and depletion of a common pool resource

One thing that puts tremendous pressure on our biodiversity and natural resources is an ever-growing demand for resources by a growing population.

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Answer:

1. Neoclassical economics focuses on supply and demand as the driving forces behind the production and consumption of goods and services.

2. It should be noted that Neoclassical economics emphasizes the choices of consumers. Thus, in neoclassical economics, the value of products and services is above the costs of production.

3. Hubbert's peak theory states that the rise, peak, and decline of fossil fuel production with revolutions in new technology will be longer than originally predicted before the oil reserves run out

4. The tragedy of the commons is an economic problem of overconsumptio, and depletion of a common pool resource

5. One thing that puts tremendous pressure on our biodiversity and natural resources is an ever-growing demand for resources by a growing population.

Answer:

yes

Explanation:gergrgregbfbwerbebw

This problem is providing us with the end of the electron configuration an element as s²p⁴ and asks for the most commonly formed ion. At the end, the answer is b Y²⁻.

In chemistry, when analyzing electron configurations, one must first take into account how the energy levels must be filled with electrons.

Now, note the problem states that the electron configuration ends by s²p⁴, which means it is closer to complete the octet so it needs two electrons in order to do so, as it behaves as a nonmetal.

Therefore, the most commonly ion formed by this element is Y²⁻, because of the fact that it needs two electrons to complete the octet and thus become chemically stable and likely to bond with a metal.

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Answer:

Explanation:

Nitric oxide is a relatively unstable, diatomic molecule that possesses a free radical (meaning it has an unpaired electron).

Nitric oxide is an intermediate compound formed during the oxidation of ammonia to nitric acid.

Answer:

a molecule

Explanation:

a p e x

Answer:

Ron and Hermoine

Explanation:

They always fought over petty things, but at the end, they did end up together!

(Answer for your question about love and friendship being a central theme in Harry Potter and the Philosopher's stone)

*ALSO, MY ANSWER MIGHT BE WRONG* so be sure to use a pencil just in case!

Answer:

to attain stability atoms form covalent bonds

Answer:

No, because the number of carbon, hydrogen & oxygen atoms on both sides of the equation are not equal.

Explanation:

For an equation to be completely balanced, there should be equal number of reactants and products.

Number of carbon atoms on reactant side = 16

Number of hydrogen atoms on reactant side = 16

Number of oxygen atoms on reactant side = 50

Number of carbon atoms on product side = 8

Number of hydrogen atoms on product side = 36

Number of oxygen atoms on product side = 34

Therefore, we can conclude that total number of reactants does not equal total number of products therefore, this equation is not completely balanced.

[RevyBreeze]

The true statement regarding the aerobic respiration compared to anaerobic respiration is : Aerobic respiration uses oxygen as a final electron (hydrogen) acceptor, whereas anaerobic respiration uses an organic molecule.

Aerobic respiration is a type of cellular respiration that happens within the presence of oxygen and converts food into energy. It is a biochemical process by which cells release energy from the food molecules in the presence of oxygen.

The process comprises glycolysis, Krebs cycle, and electron transport chain. It is also called oxidative respiration.

The breakdown of glucose during aerobic respiration is as follows :

C6H12O6 + 6O2 + 36 ADP + 36 phosphate → 6CO2 + 6H2O + 36 ATP (energy).

Anaerobic respiration is a type of cellular respiration that happens within the absence of oxygen and converts food into energy. It is a biochemical process by which cells release energy from the food molecules in the absence of oxygen. The process comprises glycolysis and fermentation.

The breakdown of glucose during anaerobic respiration is as follows :

C6H12O6 → 2C2H5OH (ethanol) + 2CO2 (carbon dioxide) + 2 ATP (energy).

Thus, the end-products of anaerobic respiration are lactic acid and alcohol which are toxic to the cells.

Therefore, the correct answer is option d .

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Answer:

Significant Figures in 200.0

Result 200.0

Sig Figs 4 (200.0)

Decimals 1 (200.0)

Scientific Notation 2.000 × 102

E-Notation 2.000e+2

Answer:

shiny appearance

Explanation:

All metals have a shiny appearance (at least when freshly polished)

Answer: 4P + 3O2 → P4O6

Explanation: plz give brainliest

ion-ion,  is the dominant intermolecular force that determines the solubility of the amine hydrochloride salt of ethyl 4-aminobenzoate in water.

It is standard practice to transform amines into their hydrochlorides in order to increase their water solubility, which might be advantageous for compounds used in pharmaceuticals. More than 200 hydrochlorides are listed as active components in pharmaceuticals in the European Pharmacopoeia. In comparison to free bases, these hydrochlorides might dissolve more easily in the digestive system and be absorbed into the bloodstream faster. Furthermore, many amine hydrochlorides have a longer shelf life than their corresponding free bases.

Amine hydrochlorides are latent forms of a free base, which is more reactive. In this sense, protection is granted by the production of an amine hydrochloride. The hydrochlorides of the amino acids serve as an example of this phenomenon. Shelf-stable glycine methyl ester hydrochloride is easily transformed into reactive glycine methyl ester, a substance.

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The mass of water produced is 792 grams by the combustion of 568 grams of decane.

Given:

Combustion of 568 grams of decane with 2979 grams of oxygen.

\(2 C_{10}H_{22 }+ 31 O_2 \rightarrow 20 CO_2 + 22 H_2O\)

To find:

The mass of water produced by combustion of 568 grams of decane.

Solution:

Mass of decane = 568 g

Moles of decane :

= \(\frac{568 g}{142 g/mol}=4 mol\)

Mass of oxygen gas = 2976 g

Moles of oxygen gas:

= \(\frac{2976 g}{32 g/mol}=93 mol\)

\(2 C_{10}H_{22 }+ 31 O_2 \rightarrow 20 CO_2 + 22 H_2O\)

According to reaction, 2 moles of decane reacts with 31 moles of oxygen, then 4 moles of decane will react with:

\(=\frac{31}{2}\times 4mol=62\text{ mol of}O_2\)

But according to the question, we have 93.0 moles of oxygen gas which is more than 62 moles of oxygen gas.

So, this means that oxygen gas is present in an excessive amount. Which simply means:

According to reaction, 22 moles of water is produced from 2 moles of decane, then 4 moles of decane will produce:

\(=\frac{22}{2}\times 4mol=44\text{mol of }H_2O\)

Mass of 44 moles of water ;

\(=44mol\times 18g/mol=792g\)

792 grams of water is produced by the combustion of 568 grams of decane.

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