What fundamental force is responsible for holding together the subatomic particles of an atomic nucleus?

Answer:

Should be 15 grams

Explanation:

If 3 particles are produced, divide the mmass into 3 and multiply it as many times as the particle wanted repeates.

Answer:

Respiration

Explanation:

it is the process by which food is broken down in the cell to release energy

Answer:

A molecular formula shows number of each type of atom in a molecule.

Answer:Plasma is highest energy state of matter.It consists of electrons,protons and neutral particles.

Explanation:(1) Plasma has a very high electrical conductivity .

(2) The motion of electrons and ions in plasma produces it's own electric and magnetic field

(3)It is readily influenced by electric and magnetic fields .

(4)It produces it's on electromagnetic radiations.



Molar concentration of Sodium chloride (NaCl) means the number of moles of sodium chloride present in 1L of water.

Molar mass of NaCl = Molar mass of Na + Molar mass of Cl

Molar mass of NaCl = 23 + 35.5

Molar mass of NaCl = 58.5g

∴ 1L of water contains 55.55 moles of water. Hence,

Mass of ocean water = 55.55 × 18 = 999.9g

Since, 1L of ocean water has a mass of 999.9g of which 3.5% is the salt.

hence, (999.9) (0.035) = 34.99g

So, No. of moles of NaCl = Mass of NaCl / 58g NaCl per mol

No. of moles of NaCl = 34.99/58.5

No. of moles of NaCl = 0.59 moles

So, Molar concentration or Molarity would be 0.59 moles present in 1L of solution.

Hence, Molarity or Molar Concentration = Moles of NaCl/ Volume of solution (in L)

Molarity = 0.59/1L

⇒ Molarity = 0.59M

Hence, the molarity is 0.59M

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Option A: if D was removed, the equilibrium would have shifted towards the product as D lies on the product side of the equation.

An equilibrium may be stressed in a number of ways. One method is to change the reactant or product of a chemical process when it reaches equilibrium. To lessen the stress, adding more product causes the equilibrium to switch to reactants. If a reactant or product is taken away, the equilibrium changes to produce more of the taken away reactant or product, respectively.

The chemical process is no longer at equilibrium when we stress it, and it begins to move back towards equilibrium in a way that reduces the stress. The formal formulation is termed Le Chatelier's principle: If an equilibrium is stressed, then the reaction moves to decrease the stress.

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Correct question is:

For the following reaction, determine which way the equilibrium would shift, toward the products or toward the reactants, given the proposed change. Assume the reaction is endothermic.

A + B → C + D

Part A: If D was removed

Part B: If more B was added to the reaction

Part C: If the reaction was heated

When two magnets are repelling each other, the following are true:

A magnet is a substance or item that generates a magnetic field. This magnetic field is invisible, but it is responsible for a magnet's most remarkable property: a force that attracts or repels other ferromagnetic elements such as iron, steel, nickel, cobalt, and so on.

Magnets are classified into three types: perpetual magnets, temporary magnets, and electromagnets. Permanent magnets produce a magnetic field without requiring any external magnetism or electrical power.

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There are three base units in the code for one amino acid.

What are the 3 bases that code for an amino acid?

Codons are made up of any triplet combination of the four nitrogenous bases adenine (A), guanine (G), cytosine (C), or uracil (U). Of the 64 possible codon sequences, 61 specify the 20 amino acids that makeup proteins and three are stop signals.

What is the 3 base code?

A three-base sequence in DNA or RNA is known as a codon. The codes in the coding strand of DNA and in messenger RNA aren't, of course, identical, because in RNA the base uracil (U) is used instead of thymine (T).

Why do codons have 3 bases?

The more bases there are per codon the more information you can code for. There are only 22 different amino acids, in consequence, we need a minimum of 3 bases per codon.

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Following are the KMT's five central tenets: The particles in a gas are constantly moving at random speeds, their total volume is tiny, they do not interact with one another physically, and their collisions are entirely elastic.

Gases will depart from the ideal gas law when the Kinetic Molecular Theory's five postulates fail, and there are five postulates in total.

The relationship between a gas particle's average kinetic energy and temperature is direct. The speed at which the gas molecules move rises with temperature.

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The property of water that causes it to form a curved shape on a penny is surface tension.

Surface tension is the cohesive force that exists between the water molecules at the surface of the liquid, causing them to stick together and form a "skin" or surface film. This property arises due to the hydrogen bonding between water molecules, which creates a net inward force that reduces the surface area of the liquid, making it behave as if it has an elastic film stretched across it.

When a penny is placed on a flat surface and water droplets are added to it, the surface tension of the water causes it to form a nearly spherical shape on the penny. The cohesive forces of the water molecules pull the liquid into a shape with the least amount of surface area, which is a sphere, and the penny acts as a support that helps maintain the spherical shape of the water droplet. This surface tension phenomenon can be observed in various everyday situations, such as the formation of raindrops or the behavior of soap bubbles.

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The correct statement that describes the changes that occur as the oxygen molecule is produced is Energy is released as bonds are formed.

Option 4 is correct.

Bonds form when atoms share or transfer valence electrons. Atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. obeying the rule of thumb known as the octet rule.

There are three different types of chemical bonds and they include:

From the equation shown above, two elements react with each other to produce a reactant in the process known as combination reaction. We can also say that energy is released as bonds are formed.

In conclusion, energy is not absorbed as bonds are formed.

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The net ionic equation that provides a concise representation of the chemical change occurring when the aqueous solutions of potassium phosphate and magnesium nitrate are combined is, PO4³⁻(aq) + 3Mg²⁺(aq) → Mg3(PO4)2(s)

When aqueous solutions of potassium phosphate (K3PO4) and magnesium nitrate (Mg(NO3)2) are combined, a double displacement reaction occurs.

This results in the formation of solid magnesium phosphate (Mg3(PO4)2) and a solution of potassium nitrate (KNO3).

To write the net ionic equation for this reaction, we need to consider the species that undergo a change in their chemical state.

In this case, the solid magnesium phosphate is insoluble in water and forms a precipitate.

The potassium nitrate, being a soluble compound, dissociates into its constituent ions in solution.

The complete ionic equation for the reaction can be written as follows:

3K⁺(aq) + PO4³⁻(aq) + 3Mg²⁺(aq) + 6NO3⁻(aq) → Mg3(PO4)2(s) + 6K⁺(aq) + 6NO3⁻(aq)

To simplify the equation and highlight the species involved in the chemical change, we can write the net ionic equation by removing the spectator ions (ions that do not participate in the reaction):

PO4³⁻(aq) + 3Mg²⁺(aq) → Mg3(PO4)2(s)

This net ionic equation focuses on the essential components of the reaction, showing that phosphate ions (PO4³⁻) from the potassium phosphate solution react with magnesium ions (Mg²⁺) from the magnesium nitrate solution to form solid magnesium phosphate.

Overall, the net ionic equation provides a concise representation of the chemical change occurring when the aqueous solutions of potassium phosphate and magnesium nitrate are combined, emphasizing the formation of solid magnesium phosphate and the absence of spectator ions.

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The 'reabsorption' of HCO3 (bicarbonate) in the proximal tubule is dependent on the secretion of H+ (hydrogen ions).

Here's a step-by-step explanation:
1. In the proximal tubule, the reabsorption process starts with the secretion of H+ ions into the tubular lumen.
2. The secreted H+ ions combine with HCO3- ions present in the tubular fluid to form H2CO3 (carbonic acid).
3. H2CO3 then dissociates into H2O (water) and CO2 (carbon dioxide) in the presence of the enzyme carbonic anhydrase.
4. H2O and CO2 are reabsorbed back into the proximal tubule cells, where they combine to form H2CO3 again.
5. H2CO3 dissociates into H+ and HCO3- ions, and HCO3- is reabsorbed into the bloodstream.

So, the reabsorption of HCO3- in the proximal tubule is dependent on the secretion of H+ ions.

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If all the hydrogen gas in the fuel tank is burned, 1.65 kg of water vapor will be produced.

The balanced chemical equation for the combustion of hydrogen gas is: 2H₂ + O₂ → 2H₂O

From this equation, we can see that two moles of hydrogen gas (H₂) react with one mole of oxygen gas (O₂) to produce two moles of water vapor (H₂O).

To determine the mass of water vapor produced, we need to use the ideal gas law to calculate the number of moles of hydrogen gas in the fuel tank:

PV = nRT

where P = 20.0 atm, V = 150.0 L, n is the number of moles, R is the gas constant (0.08206 L atm/mol K), and T = 298 K (25°C + 273.15).

Solving for n, we get:

n = PV/RT = (20.0 atm)(150.0 L)/(0.08206 L atm/mol K)(298 K) = 91.27 mol H₂

Since two moles of H₂ produce two moles of H₂O, the number of moles of water vapor produced is also 91.27 mol.

Finally, we can calculate the mass of water vapor using its molar mass (18.015 g/mol):

mass of H₂O = (91.27 mol)(18.015 g/mol)

= 1645.24 g or 1.65 kg

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A precipitate can be produced by the combination of lithium sulfide and nickel II chloride.

The term precipitate has to do with a solid product that is obtained from an aqueous phase reaction. It is important to know that in this kind of reaction, we have two aqueous phase reactants but they combine to give an insoluble product.

In this case we have to look at the possible products of each of the reactants as we have them in the question. The question that we must ask ourselves is; which of these aqueous reactants can produce a solid product?

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Answer:

Condensation

Explanation:

When thermal energy is added ti a substance the temperature rises, this causes solids to melt, liquid ti evaporate, or a solid to sublimate. when the pressure is applied to a substance, it can cause thus substance to condense.

Answer:

17.46× 10²³ molecules

Explanation:

Given data:

Mass of acetic acid = 172.90 g

Number of molecules = ?

Solution:

First of all we will calculate the number of moles of acetic acid :

Number of moles = mass / molar mass

Number of moles = 172.90 g/ 60.1 g/ol

Number of moles = 2.9 mol

Now the given problem will solve by using Avogadro number.

The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ molecules

2.9 mol × 6.022 × 10²³ molecules  / 1 mol

17.46× 10²³ molecules

Avogadro number:

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

Unlike protons and neutrons, which are housed inside the atom's nucleus at its center, electrons are found outside the atom.

An atom can have a label in addition to a symbol or atomic number. The label is formatted as "(text)" (without the quotation marks), which means "text, closed curved bracket, open curved bracket." If an isotopic mass is present, it should come after the chemical symbol, followed by the label.

The element is represented by the letter(s) in the centre. The atomic number, which indicates the quantity of protons, is the number in the bottom left corner.

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Answer: d

Explanation: I want paying attention ngl hahahaha

Total, -920 kJ of heat would be released when 54.0 grams of glucose is burned.

To determine the amount of heat released when 54.0 grams of glucose is burned, we need to know the heat of combustion or the heat of reaction for the combustion of glucose.

The balanced equation for the combustion of glucose (C₆H₁₂O₆) is;

C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O

To calculate the heat released, we need the molar mass of glucose and the heat of combustion per mole of glucose.

The molar mass of glucose (C₆H₁₂O₆) is;

(6 × atomic mass of carbon) + (12 × atomic mass of hydrogen) + (6 × atomic mass of oxygen)

= (6 × 12.01 g/mol) + (12 × 1.01 g/mol) + (6 × 16.00 g/mol)

= 180.18 g/mol

Next, we need to find the heat of combustion per mole of glucose. The heat of combustion of glucose is approximately -2800 kJ/mol.

Now we can set up the calculation;

54.0 g of glucose × (1 mol / 180.18 g) × (-2800 kJ/mol) = -920 kJ

The negative sign indicates that heat is being released during the combustion process. Therefore, approximately 920 kJ of heat would be released when 54.0 grams of glucose is burned.

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Volume is occupied by 0.105 mol of helium gas at a pressure of 0.95 atm and a temperature of 305 k is 2.767 L

The volume that 1 mol of any (ideal) gas occupies at standard temperature and pressure (STP: 1 atmospheric pressure, 0 °C) is known as the molar volume. Verify that it holds 22.4 litres.

The  volume  occupied  by  0.105 mol  of He  gas  at  a pressure of  0.95 atm  and  temperature  of  305 k  is  calculated   by using of the ideal  gas    equation

That  is  PV = nRT

P(Pressure)= 0.95 atm

v(volume)= ?

n  (number of moles)=0.105 mol

T(temperature)= 305 K

from  equation  above volume(v)= nRT/p

volume(v) = (0.105 mol x 0.0821 L.atm/k.mol x305k) / 0.95 atm =  2.767  L

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Answer:

The chemical formula for hydrated trioxocarbonate (IV) salt is Na2CO3·10H2O.

Explanation:

This compound is also known as sodium carbonate decahydrate or washing soda. It is a white, odorless powder that is soluble in water and has a slightly alkaline taste. It is commonly used as a water softener and in the production of glass, detergents, and paper.

The number 0.00208 has three significant figures. Significant figures are the digits in a number that carry meaningful information about its precision. In the case of 0.00208, the digits 2, 0, and 8 are all significant.

Zeros that appear before the first nonzero digit (leading zeros) are not considered significant. Therefore, the leading zero in 0.00208 is not counted as a significant figure.

To summarize, the number 0.00208 has three significant figures: 2, 0, and 8.

If we write the number as 0.002080, the trailing zero after the 8 would be considered significant, indicating that there are four significant figures in the number.

If we express the number in scientific notation, such as 2.08 x 10^(-3), the digits 2, 0, and 8 remain significant, regardless of the exponent. Hence, there are still three significant figures in the number.

It's important to note that significant figures are not limited to decimal numbers. They are also relevant in whole numbers and in calculations involving measurements with uncertainties.

Understanding the concept of significant figures allows us to maintain consistency and precision in calculations and measurements. By recognizing the significant figures in a number, we can appropriately determine the number of decimal places to retain in the result of a calculation or measurement.

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The diffusion coefficient for the BCC iron sheet is approximately 2.1 * 10^-11 m^2/s at 725°C.

To calculate the diffusion coefficient (D) for the BCC iron sheet, you can use Fick's first law of diffusion, which is given by:

J = -D * (dC/dx)

where J is the diffusion flux (1.4 * 10^-8 kg/m^2s), dC is the change in carbon concentration (0.011 - 0.0073 wt% = 0.0037 wt%), and dx is the thickness of the sheet (2.2 mm = 0.0022 m).

Rearranging the formula to solve for D, we have:

D = -J / (dC/dx)

Now, you need to convert the change in carbon concentration to kg/m^3. Assuming the density of iron is 7874 kg/m^3, we have:

dC = 0.0037 wt% * 7874 kg/m^3 = 291.338 kg/m^3

Now, substitute the values into the equation:

D = -(1.4 * 10^-8 kg/m^2s) / (291.338 kg/m^3 / 0.0022 m)

D ≈ 2.1 * 10^-11 m^2/s

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The compound that has ionic bonds is KBr (potassium bromide). Therefore the correct option is Option E.

Ionic bonds develop when two atoms with significantly differing electronegativities create a bond in which one atom (the metal) contributes electrons to the other atom (the non-metal). Potassium (K) is a metal in KBr, while bromine (Br) is a nonmetal. The electronegativity of K is low, whereas that of Br is high. When K and Br bond, K contributes its valence electron to Br, resulting in an ionic bond.

The other chemicals listed, on the other hand, have covalent bonding. When atoms with similar electronegativities share electrons in order to produce a more stable electron configuration, covalent bonds occur.

a. H2O has covalent bonds;

b. O2 contains covalent bonds; and

c. Ne is a noble gas that does not create bonds.

d. CO contains covalent bonds.

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The correct expression for the percentage yield of calcium oxide is approximately 4808%.

To find the theoretical yield, we need to calculate the stoichiometric ratio between calcium carbonate (CaCO3) and calcium oxide (CaO). The balanced equation for the reaction is:

CaCO3 → CaO + CO2

From the equation, we can see that one mole of calcium carbonate produces one mole of calcium oxide. We can calculate the molar mass of calcium carbonate and calcium oxide to convert the given masses into moles:

Molar mass of CaCO3 = 40.08 g/mol (calcium) + 12.01 g/mol (carbon) + (3 x 16.00 g/mol) (oxygen) = 100.09 g/mol

Molar mass of CaO = 40.08 g/mol (calcium) + 16.00 g/mol (oxygen) = 56.08 g/mol

Using the molar masses, we can convert the given masses into moles:

Moles of CaCO3 = 5.00 g / 100.09 g/mol = 0.04998 mol

Moles of CaO = 2.40 g / 56.08 g/mol = 0.04281 mol

The theoretical yield of calcium oxide is 0.04998 mol, as determined by the stoichiometry of the balanced equation.

Now, we can calculate the percentage yield using the formula:

Percentage yield = (actual yield / theoretical yield) x 100%

Percentage yield = (2.40 g / 0.04998 mol) x 100% ≈ 4808%

Therefore, the correct expression for the percentage yield of calcium oxide is approximately 4808%. However, it's important to note that a percentage yield above 100% suggests a possible error in the experimental procedure or measurements.

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Answer:

The reaction quotient!

Explanation:

hope this helped :D

Advantage: mining asteroids in space would be able to gain a larger amount resources from one asteroid then a mine for 1 month and it would be able to some what stop the destruction of earth's natural resources

Disadvantage: finding and asteroid close to earth then stopping it and mining will be very expensive and transporting it back even if calculations were in place to these things then it would will take time for and asteroid to come near

Answer:

This question is a practical question and hence incomplete

Explanation:

However, there are some steps that can be followed to achieve the aim of this question.

To convert millimeters (mm) to cubic centimeters (cm³), the value in millimeter will have to be divided by 1000. This is because 1 mm equals 0.001 cm³. Hence, if the volume in the data is 30 mm, the equivalent in cm³ will be

30/1000 = 0.03 cm³

OR

1 mm ⇒ 0.001 cm³

30 mm ⇒ ?

Let's assume the unknown (?) is X

1 × X = 30 × 0.001

X = 0.03 cm³

Hence, 30 mm equals 0.03 cm³

Also, to convert any volume from cubic centimeter (cm³) to square meter (m²), you will divide the unit in cm³ by 1 × 10⁶ (1,000,000). To convert the value obtained earlier (0.03 cm³ or 3 × 10⁻² cm³) to m², you will

1,000,000 cm³ ⇒ 1 m²

0.03 cm³ ⇒ ?

Let's assume the unknown (?) is Y

1000000 × Y = 0.03 × 1

Y = 0.03/1000000 OR you can write it as 3 × 10⁻² × 10⁻⁶

Y =  3 × 10⁻⁸m²

Hence, 0.03 mm equals 3 × 10⁻⁸ m²