what is the relationship between the following compounds? d-erythrose l-erythrose a) enantiomers b) conformational isomers c) diastereomers d) constitutional isomers e) identica

Henry's law determines how much a certain gas will dissolve in a certain liquid

The law that determines how much a certain gas will dissolve in a certain liquid is known as Henry's Law. This law states that the amount of gas dissolved in a liquid is directly proportional to the partial pressure of the gas above the liquid. In other words, as the partial pressure of the gas increases, more gas will dissolve in the liquid. This relationship is affected by the temperature of the liquid, with higher temperatures typically resulting in lower gas solubility.

Additionally, the nature of the gas and liquid can impact how much gas will dissolve in the liquid. For example, polar liquids tend to dissolve polar gases more readily than non-polar gases. Understanding the principles of Henry's Law is important in a variety of applications, from industrial processes to environmental studies.

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1) Allowed

2) Not allowed

3) Not allowed

4) Not allowed

5) Not allowed

6) Not allowed

7) Allowed

8) Allowed

9) Allowed

10) Not allowed

Atomic orbitals are filled with electrons according to the Aufbau principle and Hund's rule, following the electron configuration of the elements in the periodic table.

The Aufbau principle states that electrons fill orbitals in increasing energy levels starting from the lowest energy level. Hund's rule states that electrons occupy orbitals of equal energy singly before pairing up with another electron of opposite spin. The electron configuration is determined by the number of protons in the nucleus, which is the atomic number of the element. The electron configuration determines the electron arrangement in the atom and its chemical properties.

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Answer:

Explanation:

Halogen, any of the six nonmetallic elements that constitute Group 17 (Group VIIa) of the periodic table. ... The halogen elements are fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At), and tennessine

Answer:In the image tag alt is used to display an alternate 'thing' in case your image is unable to load properly due to whatever reason. This alternate 'thing' is in the form of text which describes what was the image all about. In your case it's so if it fails to load then whatever is written in the alt attribute will show up and if you had also left alt blank like in your defined question then the icon of the broken image will show up.

Explanation:

Answer:

Yes

Beryllium is a chemical element with the symbol Be and atomic number 4. It is a steel-gray, strong, lightweight and brittle alkaline earth metal. ... Notable gemstones high in beryllium include beryl (aquamarine, emerald) and chrysoberyl.

Calcium is a mineral that is necessary for life. In addition to building bones and keeping them healthy, calcium enables our blood to clot, our muscles to contract, and our heart to beat. About 99% of the calcium in our bodies is in our bones and teeth.

Answer:

it reacts to limestone better and is a bit more firmer and mostly preferred over because of how fast it can react towards chemicals

You think we can answer this question without seeing the cubes you're mentioning?

Answer:

Aphotic zone

Explanation:

To find the total pressure of the balloon, we need to add the partial pressures of helium and nitrogen. The total pressure will be the sum of the two partial pressures. First, we need to convert the pressures from mmHg to atmospheres (atm).

To convert from mmHg to atm, we divide by 760 mmHg/atm. Therefore, the partial pressure of helium in atm is:

822 mmHg ÷ 760 mmHg/atm = 1.08 atm

Similarly, the partial pressure of nitrogen in atm is:

712 mmHg ÷ 760 mmHg/atm = 0.94 atm

Now we can add the two partial pressures to get the total pressure of the balloon in atm:

1.08 atm + 0.94 atm = 1.99 atm

Therefore, the total pressure of the balloon, which is the sum of the partial pressures of helium and nitrogen, is 1.99 atm.
Hi! To find the total pressure of the sealed balloon filled with helium and nitrogen, you need to follow these steps:

1. Add the partial pressures of helium and nitrogen: 822 mmHg (helium) + 712 mmHg (nitrogen) = 1534 mmHg (total pressure).

2. Convert the total pressure from mmHg to atmospheres using the conversion factor: 1 atmosphere = 760 mmHg. Divide the total pressure in mmHg by 760: 1534 mmHg / 760 = 2.02 atmospheres.

The total pressure of the balloon filled with helium and nitrogen is 2.02 atmospheres.

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Before the occurance of Fossil fuel, our energy needs were modest. For heat, we relied on the sun—and burned wood, straw, and dried dung For transportation, the muscle of horses and the power of the wind in our sails took us to every corner of the world.

Fossil fuels are made from decomposing plants and animals.

These fuels are found in the Earth's crust and contain carbon and hydrogen, which can be burned for energy.

Coal, oil, and natural gas are examples of fossil fuels.

Hence, Before the occurance of Fossil fuel, our energy needs were modest. For heat, we relied on the sun—and burned wood, straw, and dried dung For transportation, the muscle of horses and the power of the wind in our sails took us to every corner of the world.

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Answer:

B is the answer.

Explanation:

sry if wrong :D

Answer:

option 3) They have no freedom to move

Answer:

C

Explanation:

The approximate resistance value at 45 degrees Celsius is around 5.8 ohms.

To calculate the value of the resistance temperature coefficient at 45 degrees Celsius using linear approximation, we can use the formula:

R(T) = R0 + α(T - T0),

where R(T) is the resistance at temperature T, R0 is the resistance at a reference temperature T0, α is the resistance temperature coefficient, and (T - T0) is the temperature difference.

Given that the resistance at 25 degrees Celsius is 5 ohms (R0 = 5) and the resistance at 50 degrees Celsius is 6 ohms (R(T) = 6), we can calculate the value of α.

6 = 5 + α(50 - 25),

Simplifying the equation:

1 = 25α,

Therefore, α = 1/25 = 0.04 ohm/degree Celsius.

Using the linear approximation, we can approximate the value of the resistance at 45 degrees Celsius:

R(45) = 5 + 0.04(45 - 25) = 5 + 0.04(20) = 5 + 0.8 = 5.8 ohms.

Therefore, the value of the resistance at 45 degrees Celsius is approximately 5.8 ohms.

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The combination of the equations would give us;

CH4(g) + 2O2(g) → CO2(g) + 2H2O(g)

We have the equations to be combined as;

CH(g) + 2O2(g) → CO2(g) + 2H2O(g)

CO(g) + H2O(g) → CO2(g) + H2(g)

CH4(g) + 2O2(g) → CO2(g) + 2H2O(g)

This gives us;

CH4(g) + 2O2(g) → CO2(g) + 2H2O(g)

This equation represents the complete combustion of methane, a process commonly used in energy production and heating systems. It illustrates how methane and oxygen react to form carbon dioxide and water vapor as the primary products.

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Answer: Because hydrogen is a gas.

Explanation: If children were running around with balloons filled with hydrogen gas, then they would catch fire. So the answer to your question is, its simply dangerous.

The concept of energy balance refers to the equilibrium between the energy input into a system and the energy output from that system. It is based on the principle of conservation of energy, which states that energy cannot be created or destroyed but can only be transferred or transformed from one form to another.

In terms of human energy balance, it involves the energy intake from food and beverages (energy in) and the energy expenditure through basal metabolic rate, physical activity, and other bodily processes (energy out). When the energy intake matches the energy expenditure, there is an energy balance. However, when there is an imbalance, either an excess or deficit of energy, it can lead to weight gain or weight loss, respectively.

For example, if a person consumes 2000 calories (energy in) through their diet and expends 2000 calories (energy out) through their daily activities and bodily functions, they maintain an energy balance. This means that the energy intake is equal to the energy expenditure, and their weight remains stable.

On the other hand, if a person consumes 2500 calories (energy in) but only expends 2000 calories (energy out), there is a positive energy balance. The excess energy is stored in the body as fat, leading to weight gain over time.

Conversely, if a person consumes 1500 calories (energy in) but expends 2000 calories (energy out), there is a negative energy balance. The body needs to compensate for the energy deficit by utilizing stored energy reserves, such as fat, resulting in weight loss.

Support for the concept of energy balance comes from scientific studies on weight management and obesity. It has been shown that maintaining an energy balance is crucial for weight maintenance, while sustained positive or negative energy balances can lead to weight changes. Additionally, energy balance plays a role in various physiological processes, including metabolism, hormone regulation, and overall health.

By understanding and managing energy balance, individuals can make informed decisions regarding their diet, physical activity, and lifestyle to achieve and maintain a healthy weight and overall well-being.

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Answer:

Mother board, it is essentially the brain

Explanation:

Answer:

-27.2 kJ

Explanation:

We can use the heat-transfer formula. Recall that:

\(\displaystyle q = mC\Delta T\)

Where m is the mass, C is the substance's specific heat, and ΔT is the change in temperature.

Hence substitute:

\(\displaystyle \begin{aligned} q & = (100.0\text{ g})\left(\frac{4.18\text{ J}}{\text{g-$^\circ$C}}\right)(20.0\text{ $^\circ$C} - 85.0\text{ $^\circ$C}) \\ \\ & =(100.0\text{ g})\left(\frac{4.18\text{ J}}{\text{g-$^\circ$C}}\right)(-65.0\text{ $^\circ$C}) \\ \\ & = -2.72\times 10^4\text{ J} = -27.2\text{ kJ}\end{aligned}\)

Therefore, the cooling of the water released about 27.2 kJ of heat.

Answer:

f=ma

so   a=f/m

a=16N/2kg

a=8m/\(s^{2}\)

The term mole concept is used here to determine the compounds with greatest mass. Here 2.1 mol Br₂ has the greatest mass. The correct option is B.

One mole of a substance is defined as that amount of it which contains as many particles or entities as there are atoms in exactly 12 g of Carbon - 12. The equation used to calculate the number of moles is:

Number of moles (n) = Given mass / Molar mass

a) Number of moles of atoms = 9.5 × 10²⁴ / 6.022 × 10²³ = 1.57 × 10⁴⁷

Mass = n × Molar mass of 'C'

= 1.57 × 10⁴⁷ × 12.011 = 1.89 g

b) Mass = 159.80 × 2.1 = 335.58 g

c) n = 1.86 × 10²² / 6.022 × 10²³ = 3.088 × 10⁴⁴

Mass = 3.088 × 10⁴⁴ × 153.82 = 4.74 × 10⁴⁶ g

d) 59.5 g

Thus The term mole concept is used here to determine the compounds with greatest mass. Here 2.1 mol Br₂ has the greatest mass.

One mole of a substance is defined as that amount of it which contains as many particles or entities as there are atoms in exactly 12 g of Carbon - 12. The equation used to calculate the number of moles is:

Number of moles (n) = Given mass / Molar mass

a) Number of moles of atoms = 9.5 × 10²⁴ / 6.022 × 10²³ = 1.57 × 10⁴⁷

Mass = n × Molar mass of 'C'

= 1.57 × 10⁴⁷ × 12.011 = 1.89 g

b) Mass = 159.80 × 2.1 = 335.58 g

c) n = 1.86 × 10²² / 6.022 × 10²³ = 3.088 × 10⁴⁴

Mass = 3.088 × 10⁴⁴ × 153.82 = 4.74 × 10⁴⁶ g

d) 59.5 g

Thus the correct option is B.

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Answer:B

Explanation:

The summary which expresses the main points of the Gravitational force best is the second one.

Gravitational force is a attraction force which is present between two objects and represented as:

F = gm₁m₂ / r², where

g = gravitational constant

m₁ = mass of one object

m₂ = mass of another object

r = distance between two objects

Because of gravity all objects will have a accurate position and particular order.

Hence second paragraph expresses best.

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The characteristic of elemental bromine reacting vigorously with elemental sodium metal to form a white solid represents a chemical property.

Chemical characteristics define how substances react or change chemically. A white solid forms when elemental bromine and sodium metal combine, suggesting a chemical transition.

However, a substance's physical attributes can be detected or quantified without changing its chemical composition. Colour, density, melting, and boiling points are physical qualities.

It is a chemical property of elemental bromine to react with sodium metal and generate a new compound.

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Answer:

3.24× 10^22 molecules of oxygen gas.

Explanation:

The decomposition of potassium chlorite produces oxygen gas according to the following equation:

2KClO2(s) → 2KCl(s) + 3O2(g)

From the equation, we can see that for every 2 moles of KClO2 that decompose, 3 moles of O2 are produced.

To determine the number of moles of KClO2 in 6.54 g, we need to divide the mass by the molar mass of KClO2. The molar mass of KClO2 is

121.56 g/mol (39.10 g/mol for potassium + 35.45 g/mol for chlorine + 47.01 g/mol for oxygen).

moles of KClO2 = 6.54 g / 121.56 g/mol = 0.0538 mol

Since 2 moles of KClO2 produce 3 moles of O2, we can use this ratio to find the number of moles of O2 produced:

moles of O2 = 0.0538 mol KClO2 × (3 mol O2 / 2 mol KClO2) = 0.08mol O2

Finally, we can use Avogadro's number, which is 6.022 × 10^23 molecules/mol, to convert the number of moles of O2 to the number of molecules of O2:

number of molecules of O2 = 0.0538mol O2 × 6.022 × 10^23 molecules/mol = 3.24× 10^22 molecules of O2

Therefore, 6.54 g of potassium chlorite produces approximately 3.24× 10^22 molecules of oxygen gas.

Answer:

Solubility

Explanation:

Solubility is the only thing that you can hold in your hands and touch (you can't hold reactivity or flammability). Physical = you can touch and hold it

The ratio of the mass of compounds:

a. 2Na + Cl\(_{2}\) → 2NaCl = 46 + 70 → 46 : 70

b. H\(_{2}\)O + NaO → 2NaOH = 1 : 8 + 23 : 16 → 23 : 16 : 1

c. HCl + NaOH → NaCl + H\(_{2}\)O = 1 : 35 + 23 : 35 → 23 : 35 + 1: 8

What is a  molecular mass?

Molecular mass refers to the total sum of the masses of the atoms or components that make up the molecule.

Calculation:

a. 2Na + Cl\(_{2}\) → 2NaCl

(Na x 2) + (Cl x 2) → (Na x 2) : (Cl x 2)

(23 x 2) + (35 x 2) → (23 x 2) : (35 x 2)

46 + 70 → 46 : 70

b. H\(_{2}\)O + NaO → 2NaOH

(H x 2) : (O x 1) + (Na x 1) : (O x 1) → (Na x 2) : (O x 2) : (H x 2)

(1 x 2) : (16 x 1) + (23 x 1) : (16 x 1) → (23 x 2) : (16 x 2) : (1 x 2)

2 : 16 + 23 : 16 → 46 : 32 : 2

1 : 8 + 23 : 16 → 23 : 16 : 1

c. HCl + NaOH → NaCl + H\(_{2}\)O

(H x 1) : (Cl x 1) + (Na x 1) : (Cl x 1) → (Na x 1) : (Cl x 1): (H x 2) : (O x 1)

(1 x 1) : (35 x 1) + (23 x 1) : (35 x 1) → (23 x 1) : (35 x 1) : (1 x 2) : (16 x 1)

1 : 35 + 23 : 35 → 23: 35 + 2: 16

1 : 35 + 23 : 35 → 23 : 35 + 1: 8

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Option A displays the accurate dimensional analysis for converting 14,612 mL to daL.

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Answer:19

Explanation:

Answer:

3.34x10¹⁶ molecules of aspirin are in a drop of blood

Explanation:

The recomended dose of aspirin in blood is 100.0μg/mL =

1x10⁻⁴g aspirin / mL of blood.

In a drop (0.100mL) there are:

0.100mL ₓ (1x10⁻⁴g aspirin / mL of blood) = 1x10⁻⁵g aspirin.

Molecular mass of aspirin is:

9C = 12.01g/mol ₓ 9 = 108.09g/mol

8H = 1.01g/mol ₓ 8 = 8.08g/mol

4O = 16g/mol ₓ 4 = 64g/mol

108.09 + 8.08 + 64 = 180.17g/mol

Thus, moles of aspirin in 1x10⁻⁵g are:

1x10⁻⁵g ₓ (1mol / 180.17g) = 5.55x10⁻⁸ moles of aspirin

In 1 mole, you have 6.022x10²³ molecules, thus:

5.55x10⁻⁸ moles of aspirin ₓ (6.022x10²³ molecules / 1 mole ) =

Specific heat capacity is defined as the amount of heat required to raise the temperature of one gram of a substance by one degree Celsius. This is a property that varies from substance to substance. It can be determined experimentally by measuring the amount of heat required to raise the temperature of a known mass of a substance by a known amount of degrees Celsius.

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The correct answer is (c) CICH2CO2 is more stable than CH3CO2" because of an additional resonance form.

The acidity of a carboxylic acid depends on the stability of the conjugate base formed when the acid donates a proton. The more stable the conjugate base, the stronger the acid. In this case, the conjugate base of chloroacetic acid, CICH2CO2-, is more stable than the conjugate base of acetic acid, CH3CO2-.

This is due to the presence of an additional resonance form in the conjugate base of chloroacetic acid, which is not present in the conjugate base of acetic acid. The Cl atom in chloroacetic acid withdraws electron density from the carbonyl carbon, making the double bond between the carbon and oxygen stronger. This allows for delocalization of the negative charge over two oxygen atoms and the carbon atom, leading to an additional resonance form.

In contrast, the conjugate base of acetic acid has only one resonance form, where the negative charge is localized on the oxygen atom. Therefore, the conjugate base of chloroacetic acid is more stable than the conjugate base of acetic acid, making chloroacetic acid a stronger acid. The correct answer is (c).

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Answer:

Whenever the same two elements form more than one compound, the different masses of one element that combine with the same mass of the other element are in the ratio of small whole numbers.

Explanation:

I attached a pdf hope it helps.