What is an allele?
a
A type of cell.
b
A blood type.
С
A type of mutation.
d
A variation of a gene.

In the reaction, A+ 3B -- > 2C + D the reaction is first order with respect to reactant A and second order with respect to reactant B. If the concentration of A is doubled and the concentration of B is halved, the rate of the reaction would be zero order by a factor of 1/2

The reaction given in the question is -

2A  + 3 B ---->  2C + D

From , the above reaction the rate law is written as -

rate = k [ A ]²[ B ]³

where ,

k = rate constant

In the above equation the order is determined by the sum of the powers of the concentrations , i.e. 2 + 3 = 5 order , which never possible ,

Hence , in the question ,

The by changing the concentration of B , the rate does not change .

hence , the rate is independent of the concentration of B .

Therefore ,

The order with respect to B will be zero .

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Answer:

\(1 \: mole = 6.02 \times {10}^{23} \: atoms \\ 6.5 \: moles = (6.5 \times {6.02 \times 10}^{23} ) \: atoms \\ = 3.913 \times {10}^{24} \: atoms\)

Answer:

This question is incomplete

Explanation:

This question is incomplete.

However, when all the required data are available, you can use the formula/steps below

Average speed/velocity (m/s) = distance (in metres) ÷ time (in seconds)

Time (in secs) = distance ÷ average speed/velocity

Kindly note that "blocks" is not a standard unit for distance measurement in science, hence the distance (since its a walking distance) must be in metres (or converted to metres if not in metres).

The distance in the formula is the distance from the hotel to the ice cream shop while the average speed is the distance covered per time as s/he walks to the ice cream shop and back. Hence, the answer gotten from the formula above will have to be multiplied by 2 (in order to get the time taken to walk to the ice cream shop and back) because the formula will only provide answer to one trip (time taken to walk to the shop).

After the multiplication mentioned above, the time in seconds should be converted to minutes by dividing the answer in seconds by 60

A substituent is an organic compound's component that gives specific chemical and physical capabilities.

Any chemical is any substance whose breakdown is known. A chemical constantly consist of a single "substance," or put it another way. Water is one of the substances found in nature. Chemical, dimethylformamide, methanol, hexane, quinoline, xylene, benzene, ethyl acetate, thf, and ethyl ether are examples of flammable liquids.

Chemicals are another name for matter, which is everything composed of atoms. Chemicals are really the structure you can create using atoms as the building pieces in a LEGO set. They could be solid, liquid, or gas in any form. Chemicals may be a combination or a pure substance.

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The common ion effect of Cl- from NaCl suppresses the solubility of PbCl2, resulting in a lower molar solubility of 0.0049 M.

To calculate the molar solubility of PbCl2 in a 0.20 M NaCl solution, we need to take into account the common ion effect. NaCl is a salt that dissociates into Na+ and Cl- ions in solution, and since Cl- is also a component of PbCl2, its addition will suppress the solubility of PbCl2.
To solve for the molar solubility, we can use the expression for Ksp: Ksp = [Pb2+][Cl-]2 = 1.7 x 10^-5. Since the concentration of Cl- in the solution is 0.20 M, we can substitute this value into the equation and solve for [Pb2+].

[Pb2+] = sqrt(Ksp/[Cl-]2) = sqrt(1.7 x 10^-5/0.20^2) = 0.0049 M

Therefore, the molar solubility of PbCl2 in a 0.20 M NaCl solution is 0.0049 M.

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According to this ratio of effusion rates, the gas with the lower molar mass or density has a higher rate of effusion. The rate is 1.07 after being adjusted for the necessary significant figures. N2 is 1.07 times as fast as O2 according to this.

Rate of effusion of gas A /Rate of effusion of gas B = √Molar Mass of gas B/√Molar Mass of gas A  = √density of gas B /√density of gas A

Alternatively, the equation would be:

The rate of N2 effusion is 32.0 g/mol.

Rate of O2 effusion is 28.0 g/mol.

This amounts to:

Rate of N2 effusion is 1.069044968.

Oxygen effusion rate

After making the necessary significant figure adjustments, we determine that the rate is 1.07. This indicates that the speed of N2 is 1.07 times that of O2. Although barely, it is faster.

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Bones can be classified based on their shape. There are five classifications of bone based on shape. These categories are as follows: long bones, short bones, flat bones, irregular bones, and sesamoid bones.

In order to determine the classification of a bone, we need to identify its shape. Therefore, we cannot determine the classification of a bone unless we know its shape. The shape of a bone is important because it can tell us a lot about its function. For example, long bones are found in the limbs and are responsible for providing support and leverage. Short bones are found in the hands and feet and are responsible for providing stability and support. Flat bones are found in the skull and are responsible for protecting the brain. Irregular bones are found in the spine and are responsible for providing support and flexibility. Sesamoid bones are found in the knees and are responsible for protecting the tendons.

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Answer:

the rust formed because of the water sitting in sied a metal bowl for  long time but they can fix this if they get filters

Explanation:

The concentration of H₂O₂ after 7.00 days is 0.201 M.

The first-order rate law for the decomposition of hydrogen peroxide is:

ln([H₂O₂]t/[H₂O₂]0) = -kt

Where [H₂O₂]t is the concentration of H₂O₂ at time t, [H₂O₂]0 is the initial concentration of H₂O₂, k is the rate constant, and t is time.

Half-life equation for a first-order reaction:

t₁/2 = ln₂/k

we can find the rate constant k:

k = ln₂/t₁/2 = ln₂/3.92 × 10⁴ s = 1.77 × 10⁻⁵ s⁻¹

To find the concentration of H₂O₂ after 7.00 days (or 6.048 × 10⁵ seconds), we can use the rate law:

ln([H₂O₂]t/[H₂O₂]0) = -kt

ln([H₂O₂]t/0.52) = -(1.77 × 10⁻⁵ s⁻¹)(6.048 × 10⁵ s)

ln([H₂O₂]t/0.52) = -1.47

[H₂O₂]t/0.52 =  \(e^{-1.47}\)

[H₂O₂]t = 0.52 ×  \(e^{-1.47}\)

[H₂O₂]t = 0.201 M

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Answer:

compound(C) mixture(M)

Explanation:

COMPOUNDS MIXTURES

(C)In nature they are homogeneous. (M)They can be homogeneous as well as heterogeneous in nature.

(C)They have a definite melting and boiling point. (M)They do not have any definite melting or boiling point.

(C)Example: Baking soda, salt, etc.(M) Example: Salt and sand, sugar and water.

Answer:

5648.4 Joules

Explanation:

This problem can be solved by the calorimetry formula:

Q = C . m . ΔT

where ΔT indicates the change of temperature

Final T°  - Initial T°

m = mass

C = specific heat of water and Q = Heat

We do not have m, but we have the volume of water. We can obtain mass from density.

Volume of water = 10 cm . 4cm . 2.50 cm = 100 cm³

1 cm³ = 1 mL

Density of water = 1 g/mL

Therefore our 100 mL of water is the volume for 100 g. We replace data:

Q = 4.184 J/g°C . 100 g . (32°C - 18.5°C)

Q = 5648.4 Joules

Na+ has one fewer electron than Na, making it smaller and possessing a higher effective nuclear charge.

The fact that sodium ions have just two electron shells makes them smaller than sodium atoms for the main reason (the atom has three). Because they both have the same number of nucleons, the Na+ ion and Na atom have the same nuclear charge. Na+, on the other hand, has a smaller nuclear charge than Na because it has one fewer electron. Na+ is therefore smaller than Na because there is more attraction on the electrons that are already there. A sodium ion's size is smaller than that of a sodium atom.

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Approximately 551.63 grams of iodine (I2) must be used to prepare a 0.960 molar solution using 100.0 grams of ethanol (C2H5OH).

To determine the mass of iodine (I2) required to prepare a 0.960 molar solution using 100.0 g of ethanol (C2H5OH), we need to first calculate the number of moles of ethanol and then use the stoichiometry to determine the corresponding moles of iodine.

Step 1: Calculate the moles of ethanol (C2H5OH):

Molar mass of ethanol (C2H5OH) = 12.01 g/mol (C) + 2 * 1.01 g/mol (H) + 16.00 g/mol (O) = 46.07 g/mol

Moles of ethanol = Mass of ethanol / Molar mass of ethanol

= 100.0 g / 46.07 g/mol

≈ 2.17 mol

Step 2: Use the stoichiometry to determine the moles of iodine (I2):

From the balanced chemical equation for the preparation of the solution, we need a 1:1 mole ratio between ethanol and iodine.

Therefore, the moles of iodine = Moles of ethanol = 2.17 mol

Step 3: Calculate the mass of iodine:

Mass of iodine = Moles of iodine * Molar mass of iodine

= 2.17 mol * 253.80 g/mol

≈ 551.63 g

It's important to note that the molarity (M) of a solution is defined as the number of moles of solute per liter of solution. In this case, the molarity is given as 0.960 M, indicating 0.960 moles of solute per liter of solution.

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Answer:

the mass of a tree is primary carbon

Explanation:

the the carbon comes from carbon dioxide during photosynthesis

Answer:

Plants get all the carbon, hydrogen, and oxygen they need from carbon dioxide and water, which they use to build carbohydrates during photosynthesis. To build other kinds of molecules they also need elements like nitrogen, phosphorous, and sulfur. Plants get these as well as other elements from the soil.

Explanation:

The species that act as acid are the ones that donates H⁺ in the reaction.

Since we are working with an equilibrium, we have to consider both directions.

From left to right, we have H₂O turning into OH⁻ because it lost one H⁺, so H₂O is acting as an acid in the forward reaction.

From right to left, we have CH₃NH₃⁺ tunrning into CH₃NH₂ because it lost one H⁺, so CH₃NH₃⁺ is acting as an acid in the backwards reaction.

So, the species that act as acids are H₂O and CH₃NH₃⁺, I and II only.

Answer:

lanthanum

Explanation:

lanthanum is an inner transition metal

Answer:

23.29+2.14=25.313es la respuesta

H2SO4 + ZN ------- ZNSO4+ H2

(SO4)²The sulphate salt is formed......

Hope it helps

The mystery element that remains solid at room temperature and also breaks very easily is a :  Non-metal  ( B )

A non metal is non conducting element at room temperature, which can be in gas, sold and liquid forms at room temperature, when in solid form they can break easily and do not bend as well. Non-metals are poor conductors of heat and electricity therefore will not conduct electricity when placed in a circuit. An example of a solid non-metal is Carbon.

Hence we can conclude that the mystery element is a Non-metal

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The quantity of lithium iodide produced in the reaction was determined to be 7.8 moles.

The balanced chemical equation for the reaction between lithium carbonate (Li₂CO₃) and potassium iodide (KI) is:

2 Li₂CO₃ + 2 KI → 2 K₂CO₃ + 4 LiI

From the balanced equation, we can see that for every 2 moles of Li₂CO₃ reacted, 4 moles of LiI are produced.

Therefore, if we have 3.9 moles of K₂CO₃, we can calculate the moles of LiI produced as:

3.9 moles K₂CO₃ × (4 moles LiI / 2 moles Li₂CO₃) = 7.8 moles LiI

Therefore, 7.8 moles of lithium iodide were produced in the reaction.

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A formula for the sensitivity dR/dM  represents the sensitivity of the body's reaction to the medication. It shows how the reaction changes with respect to the dose of the medication, M. The term M*C represents the contribution of the constant C to the sensitivity, while the term \((2M^2)/3\) represents the contribution of the dose M itself.

To find a formula for the sensitivity, dR/dM, let's differentiate the given function R(M) with respect to M.

Step 1: Start with the function \(R(M) = M^2(C/2 - M/3).\)

Step 2: Apply the power rule of differentiation to differentiate M^2. The power rule states that if

\(f(x) = x^n, then f'(x) = n*x^(n-1). \\\)

n this case, n = 2.

\(dR/dM = 2M^(2-1)*(C/2 - M/3).\)

Simplifying, we have:

\(dR/dM = 2M*(C/2 - M/3).\)

Step 3: Distribute the 2M to each term inside the parentheses:

\(dR/dM = M*C - (2M^2)/3.\)

This formula represents the sensitivity of the body's reaction to the medication, dR/dM. It shows how the reaction changes with respect to the dose of the medication, M. The term M*C represents the contribution of the constant C to the sensitivity, while the term \((2M^2)/3\) represents the contribution of the dose M itself.

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the formula for the sensitivity, or the rate of change of the reaction R with respect to the dose M, is

dR/dM = MC - M\(^2^/^3\)

We calculate the derivative of the reaction function R(M) with respect to M.

the reaction function: R(M) = M²(C/2 - M/3)

We will apply  the power rule and the constant multiple rule of differentiation,

dR/dM = d/dM [M²(C/2 - M/3)]

= 2M(C/2 - M/3) + M²(0 - (-1/3))

= 2M(C/2 - M/3) + M\(^2^/^3\)

dR/dM =\(MC - 2M^2^/^3 + M^2^/^3\)

= \(MC - M^2^/^3\)

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Answer:

C

Explanation:

all of the fish, bacteria, and mammals that live in a lake

hope this helps!

Answer:

It is Approximately  

1.06⋅ 10 − 10  hertz.

Explanation:

Option E IR absorptions are caused by electron excitation  isn't true about IR spectroscopy.

IR absorptions are caused by changes in the vibrational energy of bonds in a molecule, not by electron excitation. This means that IR spectroscopy is based on the measurement of the absorption of infrared light by a sample, not on the excitation of electrons.

IR spectroscopy, or Infrared spectroscopy, is a type of vibrational spectroscopy that measures the vibrations of bonds between atoms in a molecule, it is used to identify and quantify the composition of a sample by analyzing the absorption or transmission of infrared light through the sample.

By analyzing the pattern of IR absorptions, it is possible to identify the functional groups and the chemical composition of a sample, which can provide valuable information about its structure and properties.

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gravitational potential energy = mass × height × gravity

= 10g × 7m × 10

-1

=700gms

When sodium acetate is dissolved in water, it is hydrolyzed into ions.

When a salt of weak acid or base is dissolved in water, this salt hydrolysis in it. Water ionises into hydroxide and hydrogen due to addition of sodium acetate. In water, sodium acetate splits into sodium and acetate ions.

So we can conclude that when sodium acetate is dissolved in water, it is hydrolyzed into ions.

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