what is the term for photosynthesis
​

Answer:

.0051 m/s

Explanation:

We know the catepillar moves at 2 meters every 6.5 minutes. Convert minutes to seconds (6.5 * 60)

Then we have 2 m / 390 seconds. Divide the fraction.

Answer:

air resistance affects the movement of the falling object by slowing it down.

Explanation:

Answer:

The correct option is the option;

\(\lambda = \dfrac{v}{f}\)

Explanation:

The wavelength of a wave is the distance between two successive crests of the wave

Therefore, the wavelength, λ, is given by the fraction of the velocity, v, of the wave divided by the frequency, f, (the number of cycles that pass through a point) of the wave

Mathematically, we have;

\(The \ wavelength, \ \lambda = \dfrac{The \ wave \ velocity, \ v}{The \ wave \ frequency, \ f}\)

\(\lambda = \dfrac{v}{f}\)

Answer:

v/f

Explanation:

Approximately 4.87 grams of sulfur dioxide gas would occupy 379.0 gallons at a temperature of 87.20 degrees Celsius and a pressure of 10.42 psi.

Sulfur dioxide gas occupies a specific volume under given conditions of temperature and pressure. To calculate the mass of the gas in grams, we can use the ideal gas law equation, PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin.

First, we need to convert the given temperature from Celsius to Kelvin by adding 273.15 to it. So, 87.20 degrees Celsius becomes 360.35 Kelvin.

Next, we convert the given volume from gallons to liters since the ideal gas law equation requires the volume in liters. There are approximately 3.785 liters in a gallon, so 379.0 gallons is equal to 379.0 × 3.785 = 1433.015 liters.

We also need to convert the given pressure from psi to atmospheres (atm) since the gas constant in the ideal gas law equation is in terms of atm. There are approximately 0.068046 atm in 1 psi, so 10.42 psi is equal to 10.42 × 0.068046 = 0.70918532 atm.

Using the ideal gas law equation, we can solve for the number of moles of sulfur dioxide gas. Rearranging the equation to solve for n, we have n = PV / RT.

Plugging in the values: P = 0.70918532 atm, V = 1433.015 liters, R = 0.0821 L·atm/(mol·K) (the gas constant), and T = 360.35 K (converted temperature), we can calculate the number of moles of sulfur dioxide gas.

n = (0.70918532 atm × 1433.015 L) / (0.0821 L·atm/(mol·K) × 360.35 K)

n ≈ 34.43 moles

Finally, we convert the number of moles to grams using the molar mass of sulfur dioxide, which is approximately 64.06 g/mol.

Mass = number of moles × molar mass

Mass = 34.43 moles × 64.06 g/mol

Mass ≈ 2208.10 grams

Therefore, approximately 4.87 grams of sulfur dioxide gas would occupy 379.0 gallons at a temperature of 87.20 degrees Celsius and a pressure of 10.42 psi.

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Answer:

  The probability would be 50%.                                                    

Answer:

Your first flip has a 1/2 or 50% chance of getting tails. In order to get 2 tails in a row you have to get tails first and then again. The first flip is 1/2 and the second one is another 1/2. Combined you have a 1/4 chance of getting 2 tails in a row.

Each time you flip you have 1/2 a chance, but when you look at all the flips at once, each consecutive flip of the same side has a smaller probability.

Hydrogen gas is being produced at a rate that depends on the specific conditions of the reaction, such as the temperature, pressure, and concentration of reactants.

In order to determine the rate of hydrogen gas production, we would need to know these specific conditions and use them to calculate the rate using the rate law for the reaction. The rate law is an equation that relates the rate of a reaction to the concentration of the reactants and the rate constant, k.

Hence, the rate law for a reaction can be determined experimentally and is specific to the reaction. Once the rate law is known, we can plug in the specific conditions of the reaction to determine the rate of hydrogen gas production.

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One thing that would be the symptoms for an air-cooled condenser where the air leaving the condenser is hitting a barrier and recirculating is: that there is less heat transfer from the refrigerant to the surrounding environment. Hence this will cause heat to accumulate in the condenser, making the cooling system inefficient.

A condenser is a heat transfer used in heat transfer systems to cool a gaseous component and condense it into a liquid condition. The latent heat is released by the material and redistributed to the surrounding environment as a result.

The condenser's function is to accept high-pressure gas from the compressor and convert it to liquid. It does this by heat transfer or the notion that heat always moves from a warmer to a colder substance.

The condenser coil, evaporator, expansion valve, and compressor are the components. Each is critical to the overall performance of your unit.

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We can now use the equation for vrms to find the root-mean-square speed of diatomic oxygen at

50 °C:vrms = √(3kT/m)vrms = √((3 × 1.38 × 10-23 J/K)(50 + 273) K / 0.032 kg/mol)vrms ≈ 484.5 m/s

Therefore, the root-mean-square speed vrms for diatomic oxygen at 50 °C is approximately

484.5 m/s.

The root-mean-square speed vrms for diatomic oxygen at 50 °C is approximately 484.5 m/s (meters per second).The root-mean-square speed vrms can be calculated using the following equation:

vrms = √(3kT/m),

where k is Boltzmann's constant, T is the temperature in Kelvin, and m is the molar mass in kg/mol.Given that diatomic oxygen has a molar mass 16 times that of diatomic hydrogen. Therefore, the molar mass of diatomic oxygen is

2 × 16 = 32 g/mol.

Meanwhile, diatomic hydrogen has a molar mass of 2 g/mol since its molecular formula is H2. So, oxygen has a molar mass 16 times that of hydrogen. Therefore, we can conclude that the ratio of the molar mass of oxygen to that of hydrogen is

32/2 = 16.

We can now use the equation for vrms to find the root-mean-square speed of diatomic oxygen at

50 °C:vrms = √(3kT/m)vrms = √((3 × 1.38 × 10-23 J/K)(50 + 273) K / 0.032 kg/mol)vrms ≈ 484.5 m/s

Therefore, the root-mean-square speed vrms for diatomic oxygen at 50 °C is approximately

484.5 m/s.

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Answer:

3

Explanation:

The reason why it is honey is because honey add more nutrients to the body.

The statement is FALSE. Non-ferrous metals can be hardened by heat treatment, although the mechanisms and processes involved may differ from ferrous metals.

Heat treatment techniques such as precipitation hardening can be used to increase the strength of non-ferrous metals. Non-ferrous metals are metals or alloys that do not include iron (or iron allotropes, such as ferrite, etc.) in significant quantities. Non-ferrous metals are employed because they have desired qualities like reduced weight (for example, aluminium), greater conductivity (for example, copper), non-magnetic characteristics, or corrosion resistance (for example, zinc), even though they are often more expensive than ferrous metals. In the iron and steel sectors, several non-ferrous materials are also employed. Bauxite, for instance, is used as a flux in blast furnaces, whereas wolframite, pyrolusite, and chromite are utilised to create ferrous alloys.

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In a mixture of noble gases, the gas that will have the greatest partial pressure is Xenon. Mole fraction can be defined as a unit of concentration used in chemistry to measure the amount of one substance in a mixture of substances.

It is equal to the number of moles of a solute divided by the total number of moles of the solution. Therefore, given that in a mixture of noble gases, neon has a mole fraction of 0.5, argon has a mole fraction of 0.3, and xenon has a mole fraction of 0.2. The partial pressure of each gas can be calculated by using Dalton's Law of partial pressures which states that the total pressure of a mixture of gases is equal to the sum of the partial pressures of each gas in the mixture.

Partial pressure of each gas can be calculated as follows: PNeon = (0.5) x Ptotal PArgon = (0.3) x Ptotal PXenon = (0.2) x Ptotal, where Ptotal is the total pressure of the mixture. Now, we can see that the partial pressure of Xenon will be the greatest because it has the highest mole fraction and will therefore contribute the most to the total pressure.

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Answer:

50

Explanation:

Atomic number is the amount of protons. There are always the same number or protons and electrons.

Answer:

50

Explanation:

Assuming that it is a neutral atom, there will always be the same number of electrons as there is protons. The atomic number is how many protons an atom has, and that means that there would be 50 electrons as well.

I believe the answer is B.) n=2

Answer:

\(\large \boxed{\text{3.45 L}}\)

Explanation:

We will need a balanced chemical equation with molar masses, so, let's gather all the information in one place.

Mᵣ:       122.55

           2KClO₃ ⟶ 2KCl + 3O₂

m/g:       25.5

(a) Moles of KClO₃

\(\text{Moles of KClO}_{3} =\text{25.5 g KClO}_{3} \times \dfrac{\text{1 mol KClO}_{3}}{\text{122.55 g KClO}_{3}} = \text{0.2081 mol KClO}_{3}\)

(b) Moles of O₂

The molar ratio is 3 mol O₂:2 mol KClO₃

\(\text{Moles of O$_{2}$}= \text{0.2081 mol KClO}_{3} \times \dfrac{\text{3 mol O$_{2}$}}{ \text{2 mol KClO}_{3}} = \text{0.3121 mol O$_{2}$}\)

(c) Volume of O₂

We can use the Ideal Gas Law to calculate the volume of hydrogen.

pV = nRT

T = (25.44 + 273.15) K =  298.59 K

\(\rm V = \dfrac{nRT}{p}= \dfrac{\text{0.3121 mol $\times$ 0.0821 L$\cdot$atm$\cdot$K$^{-1}$mol$^{-1}\times$ 298.59 K}}{\text{ 2.22 atm}} = \textbf{3.45 L} \\\\\text{The volume of oxygen is $\large \boxed{\textbf{3.45 L}}$}\)

Answer:

Solution:-

The balanced equation:

2KClO3 (s)  \rightarrow 2KCl (s) + 3 O2 (g)

Molar mass of KClO3 = 122.55 g/mol

Number of moles of KClO3 = (Mass of KClO3 / Molar mass of KClO3) = (25.5 g / 122.55 g/mol) = 0.2081 mol

From balanced equation, 2 mol of KClO3 produce 3 mol of O2. Or, 1 mol of KClO3 produces (3/2) mol of O2.

therefore, 0.2081 mol of KClO3 will produce = (3/2) × (0.2081) = 0.3121 mol of O2

Now, we have number of moles (n) of O2 = 0.3121 mol

Pressure (P) = 2.22 atm

Temperature (T) = 25.44°C = (273.15 + 25.44) K = 298.59 K

R (Gas constant) = 0.0821 L.atm/mol.K

Volume (V) of O2 = ?

Using the ideal gas equation,

V = nRT / P

Substituting the values in the equation, we get :

V = (0.3121 mol × 0.0821 L.atm/mol.K × 298.59 K) / (2.22 atm) = 3.45 L

Hence, the volume of O2 gas produced = 3.45 L

Explanation:

Explanation:

To find the freezing point of the solution, we can use the freezing point depression equation:

ΔT = Kᵣ x m

Where ΔT is the change in freezing point, Kᵣ is the freezing point depression constant of benzene, and m is the molality of the solution.

Substituting the values from the problem, we get:

ΔT = 5.12 °C/m x 2.8 m

ΔT = 14.34 °C

Since ΔT = Tᵢ - T, where Tᵢ is the freezing point of the solvent (benzene) and T is the freezing point of the solution, we can rearrange the equation to solve for T:

T = Tᵢ - ΔT

T = 5.50 °C - 14.34 °C

T = -8.84 °C

Therefore, the freezing point of the solution is -8.84 °C.

Answer:The freezing point of the solution is -8.84 °C.

Explanation:

The ions formed when ch₃oh dissociates in water are Hydrogen ions (H+) and hydroxide ions (OH-).

What ions are formed when ch₃oh dissociates in water?

Hence the ions formed are Hydrogen ions (H+) and hydroxide ions (OH-).

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The concentration of [Ag+] present in the solution is 6.53 × 10⁻⁸ M

From the given information, the equation for the reaction between silver ion and ammonia can be represented as:

Ag⁺ + 2NH₃ ↔ [Ag(NH₃)₂]⁺

Given that the solubility constant (Ksp) for the product formed = 1.7 × 10⁷.

The solubility constant for this reaction can be expressed as:

\(\mathbf{Ksp = \dfrac{[Ag(NH_3)_2]^+}{[Ag^+][NH_3]^2} }\)

where;

\(\mathbf{1.7 \times 10^7 = \dfrac{0.025}{(x)(0.15)^2}}\)

\(\mathbf{1.7 \times 10^7 = \dfrac{1.1111}{x}}\)

\(\mathbf{x = 6.54 \times 10^{-8} \ M}\)

Therefore, we can conclude that the concentration of  [Ag+] = x = 6.54 × 10⁻⁸ M.

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The average speed is approximately 19.0 kilometers per hour.

When we say the average speed is approximately 19.0 kilometers per hour, it means that over a given time period, the object or person in question traveled a total distance of 19.0 kilometers divided by the total time it took to cover that distance. In this case, the given speed is 19 kilometers per hour.

To calculate the average speed, we use the formula:

Average Speed = Total Distance / Total Time

In the given question, the speed is already mentioned as 19 kilometers per hour. So, we can conclude that the total distance covered is 19 kilometers.

However, to find the total time taken, we need more information. The question only provides the speed but not the duration of the journey. Without knowing the total time, we cannot determine the average speed accurately. Therefore, in the absence of further information about the time, we can only state that the average speed is approximately 19.0 kilometers per hour based on the given speed.

Average speed and how it is calculated by considering the total distance and total time traveled.

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In the Bohr model of the hydrogen atom, the de Broglie wavelength of an electron in the nn = 1 level is approximately 6.62 × 10^-7 meters.

In the Bohr model of the hydrogen atom, the de Broglie wavelength (λ) of an electron can be calculated using the formula:

λ = h / p

where h is the Planck's constant and p is the momentum of the electron.

For an electron in the nn = 1 level of the hydrogen atom, the momentum can be calculated as:

p = mv

where m is the mass of the electron and v is its velocity.

However, in the Bohr model, the electron's velocity is considered to be given by:

v = (Z * e^2) / (4πε₀ * n * ħ)

where Z is the atomic number (for hydrogen, Z = 1), e is the elementary charge, ε₀ is the permittivity of free space, n is the principal quantum number (in this case, n = 1), and ħ is the reduced Planck's constant.

Substituting the values into the equation, we can calculate the velocity and subsequently the de Broglie wavelength.

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Explanation:

17. They reach to form Fe2O3

18. I think they dont reach

Answer:The elements hydrogen, nitrogen, oxygen, fluorine, chlorine, bromine and iodine are diatomic elements

Definition of diatomic elements:Diatomic elements are special as the atoms that form it do not like to be alone. That is, you will never find a nitrogen or fluorine atom, for example, hanging out solo. Rather, these atoms will always be paired together because they need to pool resources to have enough electrons.

Answer:

H2, O2, N2, F2, Cl2, Br2, I2

Explanation:

These occur naturally has molecules of 2 atoms.

They are all gases except Br2, liquid and iodine which is solid.

Answer:

T₂ = 150 K

Explanation:

Given data:

Initial volume = 4 L

Initial temperature = 300 K

Final volume = 2 L

Final temperature = ?

Solution:

The given problem will be solve through the Charles Law.

According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.

Mathematical expression:

V₁/T₁ = V₂/T₂

V₁ = Initial volume

T₁ = Initial temperature

V₂ = Final volume  

T₂ = Final temperature

Now we will put the values in formula.

V₁/T₁ = V₂/T₂

T₂ = T₁V₂/V₁  

T₂ = 300 K × 2L / 4 L

T₂ = 600 L.K / 4 L

T₂ = 150 K

Answer:

D. it results in an equilibrium mixture of reactants and products

Explanation:

took the test

Answer:

\(31.8\ moles = 1.91 * 10^{25}\ molecules\)

Explanation:

Given

31.8 moles of water

Required

Determine the number of molecule

In standard units: 1 molecule of water is:

\(1\ mole = 6.022 * 10^{23}\ molecules\)

Multiply both sides by 31.8

\(31.8 * 1\ mole = 31.8 * 6.022 * 10^{23}\ molecules\)

\(31.8\ moles = 31.8 * 6.022 * 10^{23}\ molecules\)

\(31.8\ moles = 191.4996 * 10^{23}\ molecules\)

Express 191.4996 as a standard form

\(31.8\ moles = 1.914996 * 10^2 * 10^{23}\ molecules\)

Apply law of indices:

\(31.8\ moles = 1.914996 * 10^{2+23}\ molecules\)

\(31.8\ moles = 1.914996 * 10^{25}\ molecules\)

Approximate:

\(31.8\ moles = 1.91 * 10^{25}\ molecules\)

Answer:

8

Explanation:

Its official chemical symbol is O, and its atomic number is 8, which means that an oxygen atom has eight protons in its nucleus

Answer:

1.12 g.

Explanation:

From the question given above, the following were obtained obtained:

Volume (V) of metal = 2.3 cm³

Density (D) of metal = 0.486 g/cm³

Mass (m) of metal =..?

The density of a material is simply defined as the mass of the material per unit volume of the material. Mathematically, it is expressed as:

Density (D) = mass (m) / volume (V)

D = m/V

With the above formula, we can easily calculate the mass of the metal as shown below:

Volume (V) of metal = 2.3 cm³

Density (D) of metal = 0.486 g/cm³

Mass (m) of metal =..?

D = m/V

0.486 = m/2.3

Cross multiply

m = 0.486 × 2.3

m = 1.12 g

Therefore, the mass of the metal is 1.12 g.

The valence electron of the light metals are all in the range of 1 to 3.

Valence Electron is the number of electrons in the outer shell of an atom which participate in bond formation.

Number of Valence Electron in Boron is 3 and other light metals lighter than Boron have 1 , 2 of Lithium and Beryllium respectively,

The valence electron of the light metals are all in the range of 1 to 3.

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