Octahedral [Ni(NH₃)₆]²⁺ is paramagnetic, whereas planar[Pt(NH₃)₄]²⁺ is diamagnetic, even though both metal ions are d⁸ species. Explain.

Answer:

3.75 ltrs

Explanation:

The final volume of the gas is 3.8L.

Volume is the quantity of space occupied by a liquid, solid, or gas.

Using Avogadro's law.

Avogadro's Law:

V₁/n₁=V₂/n₂

Where V₁ = initial volume

            V₂ = final volume

             n₁ = initial amount of gas in moles

             n₂ = final amount of gas in moles

Avogadro's Law explains when the temperature and pressure are kept constant, volume is directly proportional to gas amount in moles, which means when the volume increases, the amount of gas also increases.

V ∝ n

V₁/n₁ = V₂/n₂

V₁ = 2.5L, V₂ = ?, n₁ = 0.30 mol, n₂ = 0.45 mol

substituting the above values in the equation,

2.5L/0.30 mol = V₂/0.45 mol

                      V₂ = 1.125/0.30 mol

                       V₂ = 3.8L

Hence, 3.8L is the final volume of the gas.

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The function y = |x| - 3 is translated 3 units downward from the parent function.

The parent function of y = |x| is the absolute value function. The function y = |x| - 3 is obtained by subtracting 3 from the parent function.

we make a comparison in order to determine the translation of the function, it to the parent function.

In the question,  the translation is in the vertical direction and because  we subtract 3 from the parent function, the graph of y = |x| - 3 is shifted downward by 3 units compared to the parent function y = |x|.

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The volume of the bleach solution for 1:10 that should be used is 1,750 mL.

The volume of bleach solution required is calculated using concentration formula as follows;

C1V1 = C2V2

where;

Make the initial volume of the bleach solution the subject of the formula as shown below;

V1 = C2V2/C1

Substitute the given parameters and solve for the initial volume of the bleach solution.

V1 = (35 x 500)/(10)

V1 = 1,750 mL

Thus, the volume of the bleach solution for 1:10 that should be used is 1,750 mL.

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Answer:

Period 4

Explanation:

Given the electronic configuration of the element;

= Is²  2s²  2p⁶  3s²  3p⁶  3d¹⁰   4s²    4p¹

The period of the element is determined by the highest coefficient in the electronic configuration.

For this given configuration (Is²  2s²  2p⁶  3s²  3p⁶  3d¹⁰   4s²    4p¹), "4" is the highest coefficient and the element will certainly belong to period 4 in the periodic table.

To test if the prediction is correct:

Total number of electrons in the given element = 2+2+6+2+6+10+2+1 = 31

The element with atomic number of 31 = Gallium (Ga). (This element belong to period 4).

Answer:

the second one I think...

Answer:

The answer is the first one.

Acceleration is the change of velocity

Velocity is another term for speed with direction.

Answer:

866000

Explanation:

because one kilometer (km) = 1000000 millimeters (mm)

The molar mass of I2 : 283.81 g/mol

Given

I2 compound

Required

The molar mass

Solution

Relative atomic mass (Ar) of element : the average atomic mass of its isotopes  

Relative molecular weight (M) : The sum of the relative atomic mass of Ar  

M AxBy = (x.Ar A + y. Ar B)  

So for I2 :

= 2 x Ar I

= 2 x 126.90447 g/mol

= 253. 809 g/mol

= 253.81 g/mol

Answer:

elliptical galaxy

Explanation

:The combination of the two galaxies then forms what appears to be an elliptical galaxy as the arms begin to disappear. The merger of gasses creates new stars, and the new shape becomes more elliptical, globular, or sometimes irregular.

Answer: no

Explanation:

It aint got the dingdong and besides whos the mommyy??

the sun produces high frequency waves like gamma rays.

Lactate and pyruvate are byproducts of anaerobic glycolysis. Anaerobic glycolysis is the metabolic process of breaking down glucose into energy when oxygen is not available.  

During anaerobic glycolysis, glucose is broken down into pyruvate in the absence of oxygen, which is then converted into lactate as a means of regenerating NAD⁺ so that glycolysis can continue. This process is commonly used by muscle cells during intense exercise when oxygen delivery cannot keep up with the energy demand. In contrast, during aerobic glycolysis, glucose is broken down into pyruvate in the presence of oxygen, which then enters the mitochondria to be further metabolized in the citric acid cycle.

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Answer:" For example, when hydrogen gas, H2(g), is burned in the presence of gaseous oxygen, O2(g), a new substance, liquid water, H2O(l ), forms. The covalent bonds within the H2 molecules and O2 molecules break, and new covalent bonds form between oxygen atoms and hydrogen atoms (Figure 7.1)."

Explanation:

The percentage yield recovery formula is a way to calculate the efficiency of a chemical reaction. It is used to determine how much of the desired product is actually produced during a reaction, and it is expressed as a percentage. The formula is:

Percentage Yield Recovery = (Actual yield of product / Theoretical yield of product) x 100

The actual yield of product is the amount of product that is actually produced during the reaction, while the theoretical yield of product is the maximum amount of product that could be produced based on the amounts of reactants used in the reaction.

For example, let's say that a chemical reaction was performed with a theoretical yield of 100 grams of product, but only 80 grams of product were actually produced. To calculate the percentage yield recovery, you would use the following calculation:

(80 / 100) x 100 = 80%

This means that the reaction had an 80% recovery rate. This means that 80% of the product that could be made was made and the remaining 20% is lost.

It's important to note that the percentage yield recovery may be affected by various factors such as the purity of the reactants, the reaction conditions, and the presence of impurities. Therefore, it's important to take these factors into consideration when performing a chemical reaction and interpreting the results.

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Answer:

719.83°C

Explanation:

The heat that the sample of Zinc gives is equal to the heat that water is absorbing. That is:

C(Zn) * m(Zn) * ΔT(Zn) = C(H2O) * m(H2O) * ΔT(H2O)

Where:

C is specific heat (Zn: 0.390J/g°C; H2O: 4.184J/g°C)

m is mass (Zn: 2.50g; H2O: 65.0g)

ΔT (Zn: ?; H2O: (22.5°C - 20.0°C = 2.50°C)

Replacing:

0.390J/g°C * 2.50g * ΔT(Zn) = 4.184J/g°C * 65.0g * 2.50

ΔT(Zn) = 697.33°C

As final temperature of Zn is 22.50°C, initial temperature is:

Initial temperature: 697.33°C + 22.50°C

719.83°C

Oxygen is an element, symbol O

Magnesium oxide is an ionic compound, formula MgO

Answer:

it would be C

Explanation:

Answer: C

Explanation:

both numbers have 2 S.F. so the answer should have 2 too.

The observed optical rotation of the solution is 0.300 degrees.

When a solution of D-lactose is exposed to plane-polarized light, it exhibits optical rotation. The observed optical rotation is a measure of the degree of rotation of the plane of polarized light as it passes through the solution. In this case, the observed optical rotation is 0.300 degrees.

To determine the observed optical rotation of a solution, we need to know the specific rotation of the compound in question. The specific rotation is a characteristic property of a substance and is typically reported in units of degrees per decimeter per gram (°/dm/g). Unfortunately, you haven't provided the specific rotation value for D-lactose.

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Answer:

mutualism describes the ecological interaction between two or more species where species has a net benefit. 2. The doctrine that mutual dependence is necessary to social well-being

Explanation:

google

Answer:

Convection 

is the movement of heat by a fluid such as water or air. The fluid (liquid or gas) moves from one location to another, transferring heat along with it. This movement of a mass of heated water or air is called a current. Radiation is the transfer of heat by electromagnetic waves.

ANSWER

The number of moles of the gas is 2.2 moles

EXPLANATION

Given thanks

The volume of the gas is 48.4L

To find the number of moles, follow the steps below

Recall, that 1 mole is equivalent to 22.4L/mol

Let x represents the number of moles of the gas

Hence, the number of moles of the gas is 2.2moles

Answer:

Percent yield of ether = 83.18%

Explanation:

Equation of the synthesis reaction of ether from ethanol is given as follows :

2 C₂H₅OH -----> C₂H₅OC₂H₅ + H₂0

Density = mass / volume

Therefore mass = density × volume

Density of ether = 0.7134 g/mL; volume of ether produced = 1.11 L = 1110 mL; Molar mass of ether = 74 g/mol

Mass of ether produced = 0.7134 g/mL × 1110 mL = 791.874 g

Density of ethanol = 0.789 g/mL; volume of ethanol = 1.50 L = 1500 mL; molar mass of ethanol = 46 g/mol

Mass of ethanol reacted = 0.789 g/mL × 1500 mL = 1183.5 g

From the equation of reaction, 2 mole of ethanol produces 1 mole of ether

Mass of 2 moles of ethanol = 2 × 46 = 92 g

Therefore, 92 g of ethanol produces 74 g of ether

1183.5 g of ethanol will produce 1183.5 × 74/92 grams of ether = 951.945 g of ether

Percent yield of ether = actual yield/theoretical yield × 100%

Actual yield of ether = 791.874 g; theoretical yield of ether = 951.945 g

Percent yield of ether = (791.874 g × 951.945 g) × 100 %

Percent yield of ether = 83.18%

The binding of the amino acid in aminoacyl-tRNA involves the formation of an ester bond.  Option b

Aminoacyl-tRNA is a complex molecule that plays a crucial role in protein synthesis. It consists of a tRNA molecule covalently linked to an amino acid. The amino acid is attached to the 3' end of the tRNA molecule through an ester bond.

An ester bond is formed between the carboxyl group (-COOH) of the amino acid and the hydroxyl group (-OH) of the ribose sugar at the 3' end of the tRNA molecule. This ester bond is also referred to as an ester linkage. The formation of the ester bond is catalyzed by the enzyme aminoacyl-tRNA synthetase.

The ester bond in aminoacyl-tRNA is essential for protein synthesis. During translation, the aminoacyl-tRNA molecule carries the specific amino acid to the ribosome, where it is incorporated into the growing polypeptide chain. The ester bond is later hydrolyzed, releasing the amino acid for further use in protein synthesis.

In summary, the binding of the amino acid in aminoacyl-tRNA involves the formation of an ester bond between the carboxyl group of the amino acid and the hydroxyl group of the ribose sugar in the tRNA molecule.

Option b

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Answer:

Scientists develop knowledge by making observation about the natural world that may lead to a scientific question.

A scientific question may lead to a(n) hypothesis which can be tested.

The results of experimentation can lead to changes in scientific knowledge.

Explanation:

In the process of developing scientific knowledge, scientists carry out series of observations on what happens in the natural world. This helps them to develop scientific questions. These scientific questions drawn can then lead to hypotheses which are testable.

The testing process leads to experimentation. It is in this process that much scientific questions receive answers. Testing actually lies at the core of scientific inquiry for all scientists. Whatever hypothesis made must always be tested.

The result of the testing or experimentation brings changes in scientific knowledge.  

The range of q values in the equation ΔG = ΔG° + RT ln(q) can determine the effect on the spontaneity of the reaction. When q < 1, the reaction is spontaneous. When q = 1, the reaction is at equilibrium. When q > 1, the reaction is non-spontaneous.

In the equation ΔG = ΔG° + RT ln(q), q represents the reaction quotient, which is the ratio of the concentrations of the products to the concentrations of the reactants raised to their stoichiometric coefficients. The value of q can provide information about the spontaneity of the reaction.

If q < 1, it means that the concentration of products is lower compared to the reactants. In this case, ln(q) is negative, and ΔG will be negative. A negative ΔG indicates that the reaction is spontaneous, meaning it can proceed in the forward direction.

If q = 1, it means that the concentrations of products and reactants are in equilibrium. ln(q) will be 0, and ΔG° will be equal to ΔG. This condition represents a state of equilibrium where the reaction is neither spontaneous nor non-spontaneous.

If q > 1, it means that the concentration of products is higher compared to the reactants. In this case, ln(q) is positive, and ΔG will be positive. A positive ΔG indicates that the reaction is non-spontaneous and will not proceed in the forward direction under the given conditions.

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Answer:

The part of the experiment that is set to compare data

Explanation:

The controlled variable is what stays constant throughout an experiment. You use the controlled variable to compare the new data to see what happened during whatever reaction you could say.

Answer:

Autumn is one of the four basic seasons of the year in the temperate climate zone. It is characterized by moderate air temperatures with a decreasing daily average, and relatively high annual precipitation. The climate autumn is the period of the year in which the average daily air temperature ranges around 10° C.

Astronomical fall begins at the fall equinox and lasts until the winter solstice, which roughly means in the southern hemisphere between March 23 and June 22 (sometimes these dates are a day earlier or a day later, and in a leap year they may be additionally retracted one day). During astronomical autumn, the day time of the day is shorter than the night time, and moreover, with each successive day of the day it decreases and night increases.

The larger ice cubes require more heat from the water to melt. To transfer more heat from the water requires more time. Therefore, it takes longer for the larger ice cubes to melt.

Answer:

When a saturated solution at a high temperature is cooled, why is the solution separated as a solid? When a saturated solution at a high temperature is cooled, inter molecular space between the molecules of the solution decreases. As a result, no more solute can remain in a solution separating out as a solid crystal.

Doubling the external ion concentration in a mammalian cell would increase the Nernst potential of the ion by approximately 58 mV.

The Nernst equation describes the relationship between the concentration gradient of an ion across a membrane and the membrane potential required to maintain equilibrium for that ion. The equation is as follows:

\(E = (RT/zF) * ln\)(\([ion]outside/[ion]inside)\)

where:

E is the Nernst potential (membrane potential at which the ion is at equilibrium)

R is the gas constant

T is the absolute temperature

z is the valence of the ion

F is the Faraday constant

[ion]outside is the concentration of the ion outside the cell

[ion]inside is the concentration of the ion inside the cell

ln is the natural logarithm function

Assuming the valence (z) and temperature (T) remain constant, if the external ion concentration is doubled, the Nernst potential of the ion will increase by approximately 58 mV at room temperature (25°C). This can be calculated using the Nernst equation:

E2 = (RT/zF) * ln([ion]outside x 2/[ion]inside)

E1 = (RT/zF) * ln([ion]outside/[ion]inside)

Subtracting E1 from E2, we get:

ΔE = E2 - E1 = (RT/zF) * ln([ion]outside x 2/[ion]inside) - (RT/zF) * ln([ion]outside/[ion]inside)

ΔE = (RT/zF) * ln(2)

ΔE = (8.314 J/mol·K * 298 K / (1 * 96,485 C/mol)) * ln(2)

ΔE ≈ 58 mV

Therefore, doubling the external ion concentration in a mammalian cell would increase the Nernst potential of the ion by approximately 58 mV.

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