How many hydrogen ion(s) is/are needed to neutralize a molecule of potassium hydroxide (KOH)? (Type the correct numeral.)

How many hydroxide(s) is/are needed to neutralize a molecule of phosphoric acid (H3PO4)?

Answer:

the answer is heterotrophs

Answer:

An atom contains three basic particles namely protons, neutrons and electrons. The nucleus of the atom contains protons and neutrons where protons are positively charged and neutrons are neutral. The electrons are located at the outermost regions called the electron shell.

Answer:

Purple flowers

Explanation:

Usually the dominant allele is a capital letter.

From the question, purple flowers are dominant to white flowers while white are recessive.

PP = Purple

pp = White

Answer:

Mostly purple flowers itself

You need to be aware of the temperature and pressure requirements for a given chemical in order to locate spots on a phase diagram.

A phase diagram is a graph that displays, as a function of temperature and pressure, the equilibrium conditions between a substance's various states of matter (solid, liquid, and gas). The regions of the phase diagram that correspond to the solid, liquid, and gas states are often delineated by a sequence of curves, along with the intersections of these regions.

You need to be aware of the substance's temperature and pressure conditions in order to pinpoint a point on a phase diagram. For instance, you can identify a point on the phase diagram if you have a sample of a substance at a specific temperature and pressure.

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The growth of the new plant depicts the asexual reproduction characteristic. The characteristic that describes the growth of the new plant in Stephan's mother cutting a twig from a rose bush and planting it in the soil is asexual reproduction.

Asexual reproduction is the mode of reproduction by which organisms generate offspring that are identical to the parent's without the fusion of gametes. Asexual reproduction is a type of reproduction in which the offspring is produced from a single parent.

The offspring created are clones of the parent plant, meaning they are identical to the parent.The new plant in Stephan’s mother cutting a twig from a rose bush and planting it in the soil depicts the process of asexual reproduction, which is the ability of a plant to reproduce without seeds. In asexual reproduction, plants can reproduce vegetatively by cloning themselves using their roots, bulbs, or stems.

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Answer:

The Northern Hemisphere is tilted away from the sun.

Explanation:

Kevin travels from the United States to Australia for the winter, but when he gets there it feels more like summer. Which statement explains this? The Northern Hemisphere is tilted away from the sun. When it is winter, the United States receives the least direct solar energy, as compared with the rest of the year.

The answer is B) The Southern Hemisphere is experiencing an equinox.

The two days of the year on which neither hemisphere is tilted toward or away from the sun.

This means that if he goes to the Northern Hemisphere it will be warm. And if he goes to the Southern, he will be warm too.

The Southern Hemisphere is experiencing an equinox.

Kevin travels from the United States to Australia for the winter, but when he gets there it feels more like summer. Which statement explains this? The Northern Hemisphere is experiencing an equinox. The Southern Hemisphere is experiencing an equinox. The Southern Hemisphere is tilted toward the sun, so it is summer in Australia.

Therefore, your answer is B) The Southern Hemisphere is experiencing an equinox.

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Answer:

-4

Explanation:

Answer:

0.5 grams

Explanation:

Answer:

That there appears to be many stars in the sky

Explanation: hope this helps! <33333

The wavelength of the radiation emitted by the argon ion laser is \(4.854 * 10^-7 m\).

Wavelength is a property of any type of wave that refers to the distance between two adjacent points on the wave that is in phase, i.e., at the same point in their respective cycles. It is usually denoted by the Greek letter lambda (λ) and is measured in units of length, such as meters or nanometers.

The energy carried by the photon (E) is related to the wavelength (\(\lambda\)) through the following equation:

\(E=hc/\lambda\); where 'h' is the Plank's Constant and 'c' is the speed of light which is \(3* 10^{-7} m/s\).

We can say that

\(\lambda - hc/E\)

Now after substituting the given values, we get:

\(\lambda = (6.626 * 10^{-34} J.s * 3.00 * 10^8 m/s) / (4.071 * 10^{-19} J)\\\lambda = 4.854 * 10^-7 m\)

Therefore the wavelength of the radiation emitted by the argon ion laser is \(4.854 * 10^-7 m\).

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Answer:

Table of Resistivity and Conductivity at 20°C

Material ρ (Ω•m) at 20 °C Resistivity σ (S/m) at 20 °C Conductivity

Deionized water 1.8×105 5.5×10−6

Glass 10×1010 to 10×1014 10−11 to 10−15

Explanation:

Table of Resistivity and Conductivity at 20°C

Material ρ (Ω•m) at 20 °C Resistivity σ (S/m) at 20 °C Conductivity

Deionized water 1.8×105 5.5×10−6

Glass 10×1010 to 10×1014 10−11 to 10−15

Answer:

C8H18(g) + 12.5O2(g) -> __8__CO2(g) + 9H2O(g) + heat

CH4(g) + _2___O2(g) -> ____CO2(g) + _2___H2O(g) + heat

C3H8(g) + _5___O2(g) -> _3___CO2(g) + __4__H2O(g) + heat

2C6H6(g) + __15__O2(g) ->  __12__CO2(g) + __6__H2O(g) + heat

Explanation:

I hope it helps!

Fossil fuels are natural energy resources formed from the remains of ancient plants and organisms, such as coal, oil, and natural gas, which are burned to release energy.

Balanced reactions are as follows:

C₈H₁₈ (g) + 12.5O₂ (g) → 8CO₂ (g) + 9H₂O(g) + heat

CH₄ (g) + 2O₂ (g) → 1CO₂ (g) + 2H₂O (g) + heat

C₃H₈ (g) + 5O₂ (g) → 3CO₂ (g) + 4H₂O (g) + heat

C₆H₆ (g) + 7.5O₂ (g) → 6CO₂ (g) + 3H₂O (g) + heat

A combustion reaction, also known as a combustion process, is a chemical reaction in which a substance combines with oxygen to produce heat and light. It involves the rapid oxidation of a fuel in the presence of an oxidizer, typically atmospheric oxygen. The reaction releases energy in the form of heat and light.

The general equation for a combustion reaction can be represented as: fuel + oxygen → carbon dioxide + water + energy.

Combustion reactions are essential for various processes, including the burning of fossil fuels for energy production, combustion engines in vehicles, and even the process of respiration in living organisms.

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The cells in both plants are animals are connected together and communicate through some specified structures. In plants cells are connected by a tubular structure called plasmodesmata.

Cells are the basic units of every lives. A cell contains a nucleus which is the center of a cell and regulates the overall functions of the cell.  The cytoplasm of cells are connected for communication by some structure which are different for plants and animals.

In the case of plants, the cells junction or the structure which connects adjacent cell is called plasmodesmata which links the endoplasmic reticulum, cytoplasm and plasma membranes of the plant cells.

Through these microscopic channels transport of smaller ions and signals are passed to adjacent cells. A typical plant cell might have about 100000 plasmodesmata connecting the cells.

Plasmodesmata appears to be continuous extension of the cell membrane. Hence,  the structures that allow communication between plant cells is Plasmodesmata.

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Answer:

0.877 mL

Explanation:

The box's density would be the ratio of the mass of the box and its volume
which is, (23.23/26.5) mL
or, 0.8766 mL
We must round this down to 3 significant figures,
which will be 0.877 mL

Based on the mole ratio, the maximum number of grams of NO that can be produced is 19.4 g.

The maximum number of grams of NO that can be produced is calculated from the equation of the reaction as follows:

Equation of the reaction: 4 NH₃ (g) + 5 O₂ (g) → 4 NO (g) + 6 H₂O(l)

Mole ratio of NH₃ and O₂₂is 4 : 5

moles of NH₃ = 15.9 / 17.03

moles of NH₃ = 0.9336 moles

moles of O₂ = 25.9 / 32

moles of NH₃ = 0.809 moles

the limiting reactant is O₂

Mass of NO produced = 0.809 * 4/5 * 30

Mass of NO produced = 19.4 g

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The volume of a 2.498M solution that contains 245 g of sulfuric acid is 1L.

The volume of a solution can be calculated from the molarity using the following expression:

Molarity = no of moles ÷ volume

Molarity refers to the concentration of a substance in solution, expressed as the number moles of solute per litre of solution.

no of moles of sulfuric acid = 245g ÷ 98g/mol

no of moles of sulfuric acid = 2.5moles

volume = 2.5moles ÷ 2.498M

volume = 1L

Therefore, 1L is the volume of the sulfuric acid solution.

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Fossil fuels are essential part of the power generation in the world. They are easily combustible and more reliable and cheaper. However, the burning of fossil fuels releases toxic gases  to the environment.

Fossil fuels are fuel generated from the decomposition materials. Petroleum, coal, natural gas  etc. are fossil fuels which are excavating from the earth.

Fossil fuels are non-renewable sources of energy. Hence, as the existing fossil sources are exhausted no more fossil fuel can be made. It is cheaper, reliable and easy to use.

However, the toxic hydrocarbon gases released from the burning of fossil fuels make the environment polluted. Therefore, overuse of fossil fuel definitely rise the atmospheric pollution.

Its use over the next 50 years, will increase the global warming and more of it will be exhausted.

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Answer:

Science or Western science is the system of knowledge which relies on certain laws that have been established through the application of the scientific method to phenomena in the world around us. ... Depending on the test results, the hypothesis can become a scientific theory or 'truth' about the world.

Explanation:

Answer:

P + O2 --> P2O5

Explanation:

For a simple match burning you can use the following equation: P + O2 --> P2O5 To balance the reaction you have to make sure you have the same amount of each element on both sides.

The boiling point of water is 100.0 °C, the boiling point of the solution will be : 101.49 °C.The correct answer is option (a) 100.00049 °C.

Ideal Solution : An ideal solution is a homogeneous mixture of two or more components that obeys Raoult's law, which states that each component's vapor pressure is proportional to its mole fraction.The boiling point of a solution depends on the solvent's properties and the solute's concentration. It's dependent on the mole fraction of the solvent and solute, as well as the total concentration of the solution. The change in boiling point of a solution is given byΔTb = Kb × m × i, whereKb = ebullioscopic constant, m molarity of the solution, and i = van't Hoff factor.Assuming that the solution's behavior is ideal, we may use the molality of the solution to compute the boiling point elevation of the solution.The molality of the solution is given by the following formula:m = (n₂ / m₂) ÷ (n₁ / m₁), where n is the number of moles, m is the mass, and the subscripts 1 and 2 refer to water and non-volatile solute sucrose, respectively.The molar mass of sucrose (C₁₂H₂₂O₁₁) is342.3 g/mol; therefore, the number of moles of sucrose is115.0 g ÷ 342.3 g/mol = 0.335 mol.m₁ = mass of water = 350.0 g, and m₂ = mass of sucrose = 115.0 g, as given in the problem.Therefore, the molality of the solution is given by:m = (0.335 mol / 0.115 kg) ÷ (1 mol / 1 kg) = 2.91 mol/kg.Substituting these values in the formula for ΔTb, we get:ΔTb = Kb × m = 0.512 °C m⁻¹ × 2.91 mol/kg = 1.49 °C.100.0 °C + 1.49 °C = 101.49 °C.

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Answer:

A

Explanation:

A
from le chatelier's principle, we know that as the concentration of one reactant or product changes, the equilibrium is shifted. If the concentration of a gaseous or aqueous product increases, the equilibrium is shifted to the left. Iodine is added, which means that the equilibrium is shifted to the left. Iodine increases, and HI increases. Since HI has increased, there must have been some iodine and hydrogen consumed. Since iodine was added, there is a net increase of iodine. However, since hydrogen was consumed and no new hydrogen was added, the concentration of hydrogen decreases

Answer:

Double Covalent

Explanation:

When two of the same element combine it will always be a covalent bond between them and since sulfur has two lone electrons it will make a double bond between the two to have a full octect

There are approximately 6.022 × 10^23 atoms in 12 grams of Carbon-12 (12C).

The number of atoms in a given amount of a substance can be calculated using Avogadro's number, which represents the number of atoms or molecules in one mole of a substance. Avogadro's number is approximately 6.022 × 10^23.

Carbon-12 is a specific isotope of carbon, with an atomic mass of 12 atomic mass units (amu). One mole of Carbon-12 has a mass of 12 grams. Since one mole of any substance contains Avogadro's number of particles, in the case of Carbon-12, it contains 6.022 × 10^23 atoms.

Therefore, if we have 12 grams of Carbon-12, which is equal to one mole, we can conclude that there are approximately 6.022 × 10^23 atoms in this amount of Carbon-12.

In summary, 12 grams of Carbon-12 contains approximately 6.022 × 10^23 atoms. Avogadro's number allows us to relate the mass of a substance to the number of atoms or molecules it contains, providing a fundamental concept in chemistry and enabling us to quantify and understand the microscopic world of atoms and molecules.

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Answer:

here

Explanation:

There is an easy way to remember how light rays travel through lenses. Light rays passing through a lens always bend toward the thickest part of the lens. Light waves bend toward the thick center in a convex lens. They bend out toward the thick edge in a concave lens.

Answer:t pans

Explanation:it’s the cool thing

Answer:

B) the freezing point decreases and the vapor pressure at 25°C decreases.

Explanation:

Colligative properties are those properties that depend on the amount of solute in solution. Both freezing point and vapour pressure are colligative properties.

As the number of nonvolatile solute particles increases, the freezing point of the solution decreases. This is known as freezing point depression.

Similarly, "Vapor pressure is a colligative property, so the vapor pressure of solutions is directly proportional to the amount of solute present in a solution. When a solute is present in a solvent, the vapor pressure is lowered because fewer solvent molecules are present at the top of the solution" (Lumen Learning).

Answer:

f u moderators

Explanation:

euurhtiuubbfjdhbgvzrbsf im sorry

Answer:

1.E25 it is the answer the answer to mass of 1×10^25 molecules of water​

Explanation:

this is just EXPLINATION find your answer using this

first divide the number of molecules by Avogadro's number 6.022*10^25

you will

l get no. of Moles of water

multiply the no. of Moles with mass of 1 Mole of water 18g per mole

if get answer you comment

you should try on your own you will understand better

The false statement about light is:

e. all of the above statements are true.

The speed of light in a vacuum is constant at approximately 3 00 x 10 8 m/s

light does travel much faster than sound which has a speed of around 343 meters per second

a photon is a packet of light energy and the energy of a photon is proportional to its frequency the wavelength of light is

a characteristic feature that determines its color therefore statements a b c and d are true

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