I need someones help

Answer:

what u need help with bro

Answer:

8 protons, 10 neutrons, 8 electrons

Explanation:

For the global carbon cycle and the addition of extra CO₂ to the atmosphere, Le Chatelier's principle helps us anticipate the response of the carbon cycle.

Le Chatelier's principle states that when a system in equilibrium is subjected to a change in conditions, it will respond in a way that minimizes the impact of that change.

When additional CO₂ is added to the atmosphere, several processes within the carbon cycle can be influenced. Here are a few key responses:

1. Oceanic Dissolution: The oceans act as a carbon sink by absorbing CO₂ from the atmosphere. When more CO2 is present in the atmosphere, it increases the concentration gradient, leading to enhanced dissolution of CO₂ into the ocean. This can help reduce the impact of increased atmospheric CO₂ levels.

2. Photosynthesis: Increased CO₂ levels can stimulate photosynthesis in plants and algae. Through photosynthesis, these organisms absorb atmospheric CO₂ and convert it into organic carbon compounds, such as sugars. This process can act as a natural mechanism to mitigate the rise in CO₂ concentrations.

3. Carbonate Formation: The increased CO₂ in the atmosphere can result in higher levels of dissolved CO₂ in the ocean, leading to a decrease in pH (ocean acidification). This change in pH can impact the ability of marine organisms to form calcium carbonate shells or skeletons, affecting the overall carbonate balance in the oceans.

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Answer

7.53% 97% if you divide it you can get the answer

Explanation:

0.15 liters of oil should be added to Beaker A to produce a mixture that is 60% oil.

Let's calculate the initial amounts of oil in Beakers A and B and then determine how much oil needs to be added to A to achieve a mixture that is 60% oil.

Beaker A initially contains 1 liter, with 25% oil. Therefore, the amount of oil in Beaker A is:

1 liter * 25% = 0.25 liters of oil.

Beaker B initially contains 2 liters, with 40% oil. Therefore, the amount of oil in Beaker B is:

2 liters * 40% = 0.8 liters of oil.

When half of the contents of Beaker B (1 liter) are poured into Beaker A, the total volume in Beaker A becomes 1 + 1 = 2 liters. The total amount of oil in Beaker A after mixing becomes:

0.25 liters (initial oil in A) + 0.8 liters (oil from B) = 1.05 liters of oil.

To achieve a mixture that is 60% oil, we need to calculate how much additional oil needs to be added to Beaker A.

Let x represent the amount of additional oil to be added in liters. The final mixture will have a total volume of 2 liters.

Therefore, the equation for the final mixture can be set up as:

(1.05 liters of oil + x liters of oil) / 2 liters (total volume) = 60% (0.6) oil.

Simplifying the equation:

1.05 + x = 0.6 * 2

1.05 + x = 1.2

x = 1.2 - 1.05

x = 0.15 liters

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Answer: About 43 billion tons

Explanation:

This is gonna be quite hard to explain.

Answer:

percent yield = 80.7%

Theoretical yield of silver sulfide = 30.975 g

Actual yield  = 25 g

Explanation:

Given data:

Mass of silver = 27 g

Mass of silver sulfide formed = 25 g

Theoretical yield of silver sulfide = ?

Actual yield = ?

Percent yield = ?

Solution:

Chemical equation:

2Ag + S   →     Ag₂S

Number of moles of Ag:

Number of moles = mass/molar mass

Molar mass of silver = 107.8 g/mol

Number of moles = 27 g/ 107.8 g/mol

Number of moles = 0.25 mol

Now we will compare the moles of silver with silver sulfide.

               Ag         :       Ag₂S

               2            :         1

              0.25        :      1/2×0.25 = 0.125 mol

Theoretical yield of silver sulfide:

Mass = number of moles × molar mass

Mass = 0.125 mol ×  247.8 g/mol

Mass = 30.975 g

Actual yield is given in question = 25 g

Percent yield:

Percent yield = (actual yield / theoretical yield) × 100

Percent yield = (25 g/ 30.975 g ) × 100

percent yield = 80.7%

A typical IR spectrum displays peaks between 3600 and 500 cm-1, allowing us to link particular peaks to particular functional groups.

A specific range characteristic of each type of compound is assigned the value of the C=O. stretching wavenumber to execute the analysis. Therefore, it is believed that ketones exist between 1715 and 1740 cm-1, while simple esters are found between 1740 and 1760 cm-1, which is 20 to 30 cm-1 higher.

Aldehydes and ketones exhibit a strong, distinct band in the shape of a stake between 1710 and 1720 cm-1 (right in the middle of the spectrum).

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Water 3.0 deals mainly with sewage treatment. The primary aim of this project is to reduce the harmful impacts of chemical pollutants from industrial and agricultural activities on natural water resources.

Currently, used wastewater treatment technologies can break down some of the chemicals in wastewater but not all of them. Chemicals that are not broken down are referred to as persistent organic pollutants. These chemicals persist in the environment for long periods, and they can cause severe damage to aquatic life and human health.
Currently, the primary challenge facing water treatment technologies is the removal of persistent organic pollutants such as pesticides, pharmaceuticals, and endocrine-disrupting chemicals from wastewater.

These pollutants are generally water-soluble and resist microbial degradation, making them hard to remove from wastewater using current water treatment technologies. For example, conventional activated sludge treatment used in wastewater treatment plants does not remove some persistent organic pollutants from wastewater.
Failure to remove these pollutants from wastewater can have significant environmental and health impacts.

For example, pharmaceutical chemicals can cause antibiotic resistance, while endocrine-disrupting chemicals can cause birth defects, cancer, and other health problems.

Therefore, there is a need to improve wastewater treatment technologies to remove persistent organic pollutants from wastewater.
In conclusion, wastewater treatment technologies can break down some chemicals but not all. Chemicals that are not broken down are persistent organic pollutants and pose a significant risk to the environment and human health. Therefore, it is important to develop wastewater treatment technologies that can remove these pollutants from wastewater.

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The solubility of oxygen at 10m depth below sea level, 25 degrees Celsius, and 30 g/L salinity is approximately 6.59 mg/L.

To calculate the solubility of oxygen at a specific depth below sea level, temperature, and salinity, we can refer to the oxygen solubility tables. The solubility of oxygen can vary depending on these factors.

1. Begin by identifying the given parameters:
  - Depth: 10m below sea level
  - Temperature: 25 degrees Celsius
  - Salinity: 30 g/L

2. Use the given parameters to locate the corresponding values in the oxygen solubility table.

3. The solubility of oxygen at a depth of 10m below sea level, 25 degrees Celsius, and 30 g/L salinity is typically around 6.59 mg/L.

Therefore, the solubility of oxygen at 10m depth below sea level, 25 degrees Celsius, and 30 g/L salinity is approximately 6.59 mg/L.

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The oxygen solubility at 10m depth below sea level, 25°C, and 30 g/L salinity is approximately 1538 mol/L.

To calculate the oxygen solubility at a specific depth below sea level, temperature, and salinity, we can use the solubility formula.

The solubility of a gas decreases with increasing temperature and salinity, and increases with increasing pressure.

Here's how you can calculate the oxygen solubility at 10m depth below sea level, 25°C, and 30 g/L salinity:

1. Determine the pressure at 10m depth below sea level: -

The pressure at sea level is approximately 1 atmosphere (atm).

The pressure increases by approximately 1 atm for every 10 meters of depth.

Therefore, at 10m depth, the pressure is approximately 2 atm.

2. Convert the temperature to Kelvin: -

To convert from Celsius to Kelvin, add 273 to the temperature.

25°C + 273 = 298 K.

3. Use the solubility formula:

The solubility of oxygen in water can be calculated using Henry's law:

S = k * P * C.

S is the solubility of oxygen in moles per liter (mol/L).

k is the Henry's law constant for oxygen in water at a specific temperature and salinity.  

P is the partial pressure of oxygen in atmospheres (atm).

C is the concentration of oxygen in moles per liter (mol/L).

4. Look up the Henry's law constant for oxygen at 25°C and 30 g/L salinity:

The Henry's law constant for oxygen at 25°C and 30 g/L salinity is approximately 769 L*atm/mol.

5. Calculate the solubility:  

S = (769 L*atm/mol) * (2 atm) * (1 mol/L). - S ≈ 1538 mol/L.

Therefore, the oxygen solubility at 10m depth below sea level, 25°C, and 30 g/L salinity is approximately 1538 mol/L.

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The neutral formula unit for the combination of calcium and NO₃⁻ is Ca(NO₃)₂. Calcium is a metal that belongs to group 2 of the periodic table, and it has a +2 charge. NO₃⁻ is a polyatomic ion that has a -1 charge.

When these two elements combine, they form an ionic compound through electrostatic attraction. The calcium cation and the nitrate anions combine in a 1:2 ratio to form the neutral compound Ca(NO₃)₂. This formula unit represents the simplest ratio of atoms in the compound and indicates that one calcium ion is combined with two nitrate ions.

So, the neutral formula unit for the combination of calcium (Ca) and nitrate (NO₃⁻) is Ca(NO₃)₂. In this compound, calcium has a charge of +2, while each nitrate ion has a charge of -1. To create a neutral formula unit, we need two nitrate ions for each calcium ion to balance the charges.

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Using hard water when preparing a sanitizing solution will decrease the bactericidal activity of sanitizers prepared from the water.

Hard water is defined as water that contains calcium and magnesium salts, primarily in the form of bicarbonates, chlorides, and sulfates. There may also contain ferrous iron, which when it oxidizes to the ferric form leaves a reddish-brown stain on washed clothes and enameled surfaces. Because boiling transforms calcium bicarbonate into insoluble carbonate, this type of water hardness is regarded as transient; in contrast, permanent hardness is induced by other salts. The higher fatty acids in soap react with calcium and magnesium ions in hard water to create an insoluble gelatinous curd, which results in the waste of the soap. Modern detergents do not cause this unfavorable effect.

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The chemical formula "3P4N12" denotes a molecule that consists of three phosphorus atoms, four nitrogen atoms, and twelve oxygen atoms.

The coefficient "3" is used to represent three phosphorous atoms, the subscript "4" is used to denote four nitrogen atoms, and the subscript "12" is used to denote twelve oxygen atoms. Each element's number of atoms in the molecule is indicated by a subscript.

We must add the counts of each individual atom in this molecule to get the overall number of atoms present. As a result, the molecule includes:

12 phosphorus atoms (3 x 4)

36 nitrogen atoms (3 x 12)

144 oxygen atoms (3 x 12 = 36 x 4).

As a result, the molecule has 12 + 36 + 144 = 192 atoms overall.

Keep in mind that the coefficient denotes the number of molecules, whereas the subscripts denote the number of atoms for each element.

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Answer:

Embryonic stem cells

Explanation:

Answer:

C.)

Explanation:

( Hope this helps 0_0 )

We can calculate the molarity by dividing the quantity of barium hydroxide in moles by the volume of the initial solution.

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The main points of Dalton's atomic theory is Atoms are not indivisible and all atoms of an element are not identical.

Atoms are the minuscule, indivisible building blocks of all stuff.

A certain element's atoms are all the same mass, size, and other characteristics. Nevertheless, the characteristics and mass of atoms from various elements varies.

Atoms are eternal and cannot be generated or destroyed. Atoms also can not be separated into smaller particles.

Compounds can be created by combining atoms of various elements in specific whole-number ratios.

In chemical reactions, atoms can be joined, separated, or rearranged.

The fact that an atom may be further divided into protons, neutrons, and electrons disproves the idea that it is indivisible. The smallest particle that participates in chemical processes is an atom, nevertheless. Dalton asserts that the atoms of the same element are identical in every way.

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When electrons are removed from a lithium atoms, they are removed first from the 2s orbital. The lithium atom has three electrons, with two in the 1s orbital and one in the 2s orbital.

The 1s orbital is closer to the nucleus and therefore more tightly bound, so electrons are more difficult to remove from it. Electrons in the 2s orbital have slightly higher energy and are further from the nucleus, so they are easier to remove.
When electrons are removed from an atom, the process is called ionization. In the case of lithium, removing one electron results in the formation of a lithium ion with a positive charge. Removing additional electrons requires more energy, as the remaining electrons are held more tightly by the nucleus. Understanding the behavior of electrons in atoms and molecules is critical in many areas of chemistry, including materials science, biochemistry, and drug discovery. The study of these topics is ongoing and continues to reveal new insights into the properties and behavior of matter.

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The compounds can be ranked in order of increasing amount of hydrate formed when treated with aqueous acid as follows: e < b < a < d < c and option (C) "e produces the least amount of hydrate" is correct.

Option (A) a produces more hydrate than b is also correct, as a is ranked higher than b in terms of hydrate formation. However, option (B) a produces more hydrate than e is incorrect, as e is ranked lower than a. Option (D) c produces the most hydrate is also incorrect, as c is ranked in the middle of the list. Option (E) b produces more hydrate than d is correct, as b is ranked higher than d in terms of hydrate formation.

e produces the least amount of hydrate means that compound e will form the smallest amount of hydrate when treated with aqueous acid. c produces the most hydrate means that compound c will form the largest amount of hydrate when treated with aqueous acid and b produces more hydrate than d means that compound b will form a larger amount of hydrate than compound d when treated with aqueous acid.

Hence, the correct option is C.

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The distance from the Earth to the Moon in inches is 18304704000 inches.

Distance is a measure of the point of separation of two point or the amount of space between two points.

The SI unit for measuring distance is meters with symbol m.

Other common units of measuring distance or length include:

The distance from the Earth to the Moon is given in miles as 238,900 mi

1 mile = 63360 inches

238900 miles = 238900 * 63360

238900 miles = 18304704000 inches.

Distance = 18304704000 inches.

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answer and explanation

the first step is to balance the reaction equation

N₂ + 2O₂ > 2NO₂

now that we have balanced the equation we can calculate the number of moles of nitrogen

mols = mass / molar mass

= 62.7 g/ 14.00g/mol

= 4.48 mols

we see from the balanced equation that the mol ratio of nitrogen and nitrogen oxide is 1:2

therefor the number of mols of nitrogen oxide that will form will be

2 x 4.48 = 8.96 mol of nitrogen oxide.

now that we have the mols we can then calculate the volume using the ideal gas equation

PV =nRT

V = (nRT)/P

= (8.96 x 0.0821 x 620) / 0.72

= 633.5L

Answer:

63.5474U.M.A. es la masa atómica promedio del cobre

Explanation:

La masa atómica promedio de un átomo es definida como la suma de las masas de los isótopos multiplicada por su abundancia. Para el caso del cobre que tiene dos isótopos:

Cu = Masa 65Cu*Abundancia + Masa 63Cu*Abundancia

Reemplazando con los valores dados en el problema:

Cu = 62.9298U.M.A.*0.6909 + 64.9278U.M.A.*0.3091

Cu = 63.5474U.M.A. es la masa atómica promedio del cobre

Answer:

mechanical energy

Answer:

Explanation:

Which region on the map has the lowest risk of future landslides?

Answer:

Acid: H2O

Base: CH3NH2  

Conjugate acid:  CH3NH3+

Conjugate base: OH-

Explanation:

Acid: proton donor

Base: proton receiver

Answer:

conjugate base : OH . conjugate acid: CH3NH3 bronsted Lowry acid : H2O . bronsted Lowry base:CH3NH2

The symbol of barium ion is Ba²⁺. Barium looses two electrons and get positively charge, and it became cation.

Positively charged ions are known as cations. Negatively charged ions are referred to as anions. A charged atom or molecule is an ion. A balanced atom will change into a positively charged cation if one or more of its electrons are lost.

Because they are positively charged and move toward the negative electrode in an electrical field, these ions are referred to as "cations."

The barium ion has a charge of 2+, or a positive charge of two. To become a positively charged ion known as a cation, the barium ion must give up two electrons. Atoms replicate the electron configuration of the closest noble gas by transforming into ions.

Thus,  To become a positively charged ion known as a cation, the barium ion must give up two electrons.

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Answer: See below

Explanation:

n of CO2​ = 0.364mmol

Mass of C = 0.364*12 = 4.368 mg

n of H2​O = 184.37​ = 0.243 mol

The compound has 2*0.243mmol of H

Mass of H = 0.486 mg

Mass of O = 10.68 − (4.368+0.486) = 5.826mg

Moles of O = 0.364

C:H:O Ratios

0.364 : 0.486 : 0.364

= 1 : 1.34 : 1

= 3 : 4 : 3

So the empirical formula is C3​H4​O3​,

Empirical formula mass

= 88= 2 × Molar mass

And the molecular formula is C6​H8​O6

In the buffer solution CH₃COOH (aq) ---> H₃O⁺(aq) + CH₃CO₂⁻(aq):

CH₃CO₂H is a base, and H₃O⁺ is its conjugate acid.

Option D is correct.

An acid is described as a molecule or ion capable of either donating a proton, known as a Brønsted–Lowry acid, or forming a covalent bond with an electron pair, known as a Lewis acid.

From the buffer solution above, H₃O⁺ is the conjugate acid because it donates a proton (H⁺) to a base CH₃CO₂H.

In conclusion, A conjugate acid, within the Brønsted–Lowry acid–base theory, is described as a chemical compound formed when an acid donates a proton (H⁺) to a base.

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