what is biological function?

Answer:

B. Water quality

Explanation:

Answer:

get a little more than that is a great deal for the company and inventor of a company how can we get u a great job with their best friend in a few months but il will send you i will be the only person I know of fishes and the best I have to ask me to make it to my own home wifi and I am grade up to the same thing and the same way of the American people I have a lot to make a simple one person

The parent nucleide that produces Am-241 through beta decay is Plutonium-241. This is because Plutonium-241 undergoes beta decay to form Americium-241, emitting a beta particle in the process. Knowing this information is crucial in nuclear physics and chemistry, as it helps us understand how different isotopes decay over time.

When a nuclide undergoes beta decay and produces Am-241 (Americium-241), the parent nuclide is Plutonium-241.

In beta decay, a neutron is converted into a proton, which results in an increase in the atomic number (protons) of the element, while the mass number (protons + neutrons) remains unchanged.

In this case, Plutonium-241 (with atomic number 94) decays through beta decay and forms Americium-241 (with atomic number 95).

The other isotopes mentioned, such as Plutonium-240, Plutonium-242, Curium-242, and Curium-241, do not result in Am-241 after beta decay due to differences in their mass numbers and atomic numbers.

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436 kelvin = C. 163 °Celcius

To convert from Kelvin (K) to Celsius (°C), you need to subtract 273.15 from the given temperature in Kelvin.

In this case, to convert 436 K to °C, you would perform the following calculation:

436 K - 273.15 = 162.85 °C

Therefore, 436 K is equivalent to 162.85 °C.

The Kelvin scale is an absolute temperature scale where 0 K represents absolute zero, the point at which all molecular motion ceases. The Celsius scale, on the other hand, is a relative temperature scale with 0 °C representing the freezing point of water and 100 °C representing the boiling point of water at standard atmospheric pressure.

When converting from Kelvin to Celsius, we subtract 273.15 because the Kelvin scale starts at absolute zero and the Celsius scale starts at the freezing point of water.

In this case, the conversion tells us that a temperature of 436 K is equivalent to 162.85 °C, indicating that it is a relatively warm temperature on the Celsius scale. Therefore, Option C is correct.

The question was incomplete. find the full content below:

436 k = ___ °C

A. 709

B. 336

C. 163

D. 536

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Answer:

D I think.............

Answer: Wheat flour, edible oil, egg white, lettuce preservative, meat or poultry marinade, vegetable antibacterial wash.

Explanation:

hydrogen peroxide is used as a bleaching agent in some food

I hope this helped

Answer:

hope this is help helpful

Explanation:

natural gas are considered nonrenewable because they can not be replenished in a short period of time.

Answer:

the third one

Explanation:

When you breathe in, you inhale oxygen and exhale carbon dioxide

The  three general exceptions to the octet rule is:

The octet rule is  described as a chemical rule of thumb that reflects the theory that main-group elements tend to bond in such a way that each atom has eight electrons in its valence shell, giving it the same electronic configuration as a noble gas.

The structure of the octet is usually held responsible for the relative inertness of the noble gases and the chemical behavior of certain other elements.

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Answer:

5.47 B.M

Explanation:

✓We were given electronic configuration of argon as [Ar] 3d5.

✓This is a divalent ion. It has atomic number of 25.

✓magnetic moment can be calculated using below expresion

√[n(n+2)] .....................eqn(1)

✓ It has 5 unpaired electrons. Then n= 5

✓ [n(n+2)]

✓ substitute the ( n= 5) into eqn(1)

Then magnetic moment= [n(n+2)]

= [ 5(5+2) ]

= 5.47BM

Answer:

Model

Explanation:

A model of anything is something you make to represent it in it's physical world form

Answer:

C I think

Explanation:

A duck isn't supposed to bring a sandwich to people, so i believe that the duck learned how to do that. (Sorry if it's wrong)

Answer:

B. metals

Explanation:

Most of the elements in the periodic table are classified as metals. They are usually solid at room temperature.

The mammoth bone is approximately 11,000 years old. Since the half-life of 14C is 5,500 years and only 25% of the original 14C remains, the bone has undergone two half-lives (50% remaining after 1 half-life, 25% remaining after 2 half-lives). Therefore, 2 half-lives * 5,500 years per half-life = 11,000 years.

To answer your question, we need to use the formula for radioactive decay, which is:

Amount of remaining material = Original amount x (1/2)^(number of half-lives)

In this case, we know that the half-life of 14C is approximately 5500 years. We also know that only 25% of the original 14C is left in the mammoth bone. So, we can set up the equation like this:

0.25 = 1 x (1/2)^(number of half-lives)

We can solve for the number of half-lives by taking the logarithm of both sides of the equation:

log(0.25) = log(1) - number of half-lives x log(2)

Simplifying this equation gives us:

number of half-lives = log(1/0.25) / log(2)

number of half-lives = 2

Now that we know the number of half-lives, we can use the half-life of 14C to calculate the age of the mammoth bone. Since there are two half-lives, the age of the mammoth bone is:

Age = 2 x 5500 years

Age = 11,000 years

So the mammoth bone is approximately 11,000 years old. I hope that helps! Let me know if you have any further questions.

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Answer:

Number three the answer is d

The value of Equilibrium constant kp = 0.019

A dynamic chemical system approaches chemical equilibrium when enough time has passed and its composition no longer exhibits any discernible propensity to change further. The equilibrium constant of a chemical reaction is the value of its reaction quotient at chemical equilibrium.

An perfect gaseous mixture's equilibrium constants are Kp and Kc. When equilibrium concentrations are represented in terms of atmospheric pressure, the equilibrium constant employed is Kp, and when expressed in terms of molarity, it is Kc.

2 CO(g) + Mo0= 2 CO+Mo

5.2l atm 0.727 atm n

\($$2 \mathrm{CO}(\mathrm{g})+\mathrm{MoO}_2 \rightleftharpoons 2 \mathrm{CO}+\mathrm{Mo}$$\\$5.21 \mathrm{~atm} 0.727\mathrm{~atm}\\\\$Equilibrium Constant, $K_p=\frac{\left[\mathrm{CO}_2\right]^2}{[\mathrm{CO}]^2}=\frac{[0.727]^2}{[5.21]^2}=0.019$\)

The value of Equilibrium constant kp = 0.019

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Answer:Fatty acids

Explanation:There are two groups of fatty acids saturated and unsaturated. Recall that the term unsaturated refers to the presence of one or more double bonds between carbons as in alkenes.

Answer:

1,69 x10²⁴

Explanation:

Answered it in the comments! ^^

The appropriate number of significant figures in the result of 15.234 – 15.208 is false because Significant figures are a way of representing a certain number of significant digits that are used to give an accurate representation of the result of a calculation.

In this particular example, the answer of 15.234 - 15.208 is 0.026. The correct number of significant figures in the result of this calculation is three, not four. The significant figures in a number are the digits that carry meaning and can be used to describe the accuracy of the number. In this case, the first two digits “15” are the same number and, therefore, do not carry any significance.

The last two digits “.23” and “.20” are significant because they are different and are the only digits that carry meaning. When performing calculations, it is important to pay attention to the number of significant figures in the result. For example, when subtracting two numbers, the result can be no more precise than the least precise number used in the calculation. In this case, the least precise number is 15.208, so the result should only have two significant digits.

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Explanation:

1. 6 elements

2. 18 elements

3. Li, Na, K, Rb, Cs, Fr

4. Cu, Ag, Au, Uun

The density of gasoline id 0.008 g/ml is 18.64 gram.

Density is defined as mass per unit volume it means that mass is present in one meter cube.

S.I unit of density is kg/meter^3.

Mathematically

Density = Mass/Volume.

In above question

Volume = 2330 mL

Density = 0.008 g/mL

Density = mass/ volume

So,

Mass = density x volume

Mass = 0.008 x 2330

Mass = 18.64 gram

Therefore, The density of gasoline id 0.008 g/ml is 18.64 gram.

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The pH of a 0.188 M NH3 solution at 25 degrees Celsius is found to be 11.38 using the given Kb value of NH3, which is 1.76 x 10^-5.

To find the pH of the NH3 solution, we need to determine the concentration of OH- ions, as NH3 acts as a base and reacts with water to produce OH- ions. The Kb value represents the equilibrium constant for the reaction NH3 + H2O ⇌ NH4+ + OH-.

First, we can calculate the concentration of NH4+ ions produced by the reaction using the equation for Kb:

Kb = [NH4+][OH-] / [NH3]

Since the initial concentration of NH3 is 0.188 M and the concentration of NH4+ ions is equal to the concentration of OH- ions, we can denote the concentration of OH- as x. The concentration of NH4+ ions can be considered negligible compared to the initial concentration of NH3. Thus, we can assume that [NH3] - x ≈ [NH3].

Plugging in the values into the Kb equation:

1.76 x 10^-5 = x^2 / (0.188 - x)

Solving this quadratic equation gives us the value of x, which represents the concentration of OH- ions. Let's assume the value of x is small compared to 0.188 M, allowing us to simplify the equation:

1.76 x 10^-5 ≈ x^2 / 0.188

Rearranging and solving for x gives us:

x ≈ √(1.76 x 10^-5 * 0.188)

x ≈ 2.40 x 10^-3 M

Now that we have the concentration of OH- ions, we can calculate the pOH using the formula:

pOH = -log10[OH-]

pOH = -log10(2.40 x 10^-3)

pOH ≈ 2.62

Finally, to find the pH, we subtract the pOH from 14 (pH + pOH = 14):

pH = 14 - 2.62

pH ≈ 11.38

Therefore, the pH of the 0.188 M NH3 solution at 25 degrees Celsius is approximately 11.38.

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Answer:

Chemists make observations on the macroscopic a scale that lead to conclusions about microscopic features

Explanation:

Many important chemical observations are made on the macroscopic scale. This is because, many of the scientific equipments available are not presently able to provide direct evidence about microscopic processes. Evidences obtained from macroscopic observations could serve as important insights into the nature of certain microscopic processes.

This is evident in the study of the structure of the atom. Most of the evidences that led to the deduction of the atomic structure were obtained from macroscopic evidence but ultimately provided important information about the microscopic structure of the atom.

Answer:

different types of waves are due to how and where they are formed

Explanation:

Don't give me brainliest I only know first part.

Answer:

P₂ = 261 KPa

Explanation:

Given data:

Volume of sample = 200 mL

Initial pressure = 110 KPa

Initial temperature = 275 K

Final volume = 95 mL

Final temperature = 310 K

Final pressure = ?

Solution:

Formula:

P₁V₁/T₁ = P₂V₂/T₂

P₂ = P₁V₁T₂ /T₁ V₂

P₂ = 110 KPa× 200 mL× 310 K /275 K  × 95 mL

P₂ = 6820000 KPa / 26125

P₂ = 261 KPa

Answer:

Physical entities such as light and electrons possess both wavelike and particle-like characteristics. This is known as wave/particle duality. On the basis of experimental evidence, Einstein first showed (1905) that light, which had been considered a form of electromagnetic waves, must also be thought of as particle, or localized in packets of discrete energy. Nearly twenty years later, the French physicist Broglie proposed that electrons and other discrete bits of matter, which until then had been conceived only as material particles, also have wave properties such as wavelength and frequency. Soon after, the wave nature of electrons was experimentally established. An understanding of the complementary relation between the wave aspects and the particle aspects of the same phenomenon was announced in 1928.

This dualism to the nature of light is best demonstrated by the photoelectric effect, where even a weak ultra-violet light produces a current flow - i.e., releases electrons but a red light does not release electrons no matter how intense the red light.

Physical entities such as light and electrons possess both wavelike and particle-like characteristics. This is known as wave/particle duality. If a beam of light is pointed at the negative end of a pair of charged plates, a current flow is measured. A current is simply a flow of electrons in a metal, such as a wire. Thus, the beam of light must be liberating electrons from one metal plate, which are attracted to the other plate by electrostatic forces. This results in a current flow. Normally, one would expect the current flow to be proportional to the strength of the beam of light - i.e., more light = more electrons liberated = more current. But it is observed that the current flow is constant with the intensity of the light, but varies strongly with a change in the wavelength of light such that there was a sharp cutoff and no current flow for long wavelengths.

In his scientific paper, Einstein showed that light was made of packets of energy quantum called photons. Each photon carried a specific energy related to its wavelength, such that photons of short wavelength (blue light) carry more energy than long wavelength (red light). To release an electron from a metal plate required a minimal energy i.e. the wavelength of the light had to be a sufficiently short. Each photon of blue light released an electron. But photons of red light were too weak. The result is no matter how much red light was shown on the metal plate, there was no current flow.

The photoelectric effect earned Einstein the Nobel Prize, and introduced the term "photon'' into our terminology.

The number of electrons, protons, and neutrons in argon is 18, 18 , and 22 respectively, the number of electrons , protons and neutrons in sulphur-32 is 16, 16, 16 respectively. The number of protons, neutrons, and electrons are 6 , 8 and 6. And for uranium-238 , 92 protons , 92 electrons and 146 neutrons.

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Answer:

Explanation:

sunlight

soil

water

sugar

carbon dioxide

minerals

leaves

vitamins

Plants acquire nitrogen and phosphorus, which are essential nutrients for their growth and survival, from the soil. Nitrogen is typically taken up by plants in the form of nitrates (NO3-) or ammonium (NH4+) ions, which are absorbed through the roots.

Phosphorus is absorbed by plants in the form of phosphates (PO4^3-).

The process of acquiring nitrogen and phosphorus from the soil involves the following steps.

The availability of nitrogen and phosphorus in the soil can be limited, and their absence can restrict the growth and productivity of plants. To ensure adequate supply of these nutrients, farmers often use fertilizers to supplement the soil with extra nitrogen and phosphorus.

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