List the following transition metal cations by their d electron count, with the highest at the top and the lowest at the bottom. 1. Zn2+ 2. Co2+ 3. Ru4+ 4. Mo4+ 5. Pt2+.

A methane molecule (CH4) is considered symmetrical because it possesses a symmetric structure and exhibits symmetry operations.

Symmetry refers to a balanced arrangement of elements that can be divided into equal parts by a plane, axis, or center. In the case of methane, it exhibits several symmetrical characteristics.

Firstly, methane has a tetrahedral molecular geometry, with the carbon atom at the center and four hydrogen atoms positioned around it. This geometry ensures that the molecule is symmetrical in terms of its spatial arrangement.

Each hydrogen atom is located at one of the vertices of the tetrahedron, forming equal angles and distances with respect to the central carbon atom. This symmetry is maintained regardless of the orientation of the molecule.

Additionally, methane possesses rotational symmetry. It can be rotated around any of the carbon-hydrogen bonds, and the molecule will retain its overall appearance.

The symmetry of methane arises from its molecular structure and the equal distribution of electron density around the central carbon atom. The four hydrogen atoms are bonded to the carbon through sigma bonds, which have a cylindrical symmetry. This balanced arrangement of the atoms contributes to the overall symmetry of the molecule.

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Answer:

301.15 K

Explanation:

Answer:

the answer is 373

Explanation:

K=°C + 273

K=100+273=373

Answer

Explanation

Given:

Volume of chlorine gas, V = 25.7 L,

Pressure, P = 1 atm, and

Temperature, T = 25 °C (25 + 273.15 = 295.15 K)

What to find:

The grams of carbon disulfide are needed to completely consume 25.7 L of chlorine gas.

Step-by-step solution

The question combines using (a) the ideal gas law, and (b) a stoichiometry calculation.

The first step is to write the balanced chemical equation for reaction as shown below:

CS₂ (s) + 4Cl₂ (g) --> CCl₄ (l) + 2SCl₂ (s)

The second step is using the ideal gas law to calculate the number of moles of Cl₂ gas as follows:

The next step is using the balanced chemical reaction and stoichiometry to convert moles of Cl₂ to moles of CS₂.

From the reaction, you can see that 4 moles of Cl₂ react with 1 mole of CS₂. Therefore, 1.06 moles Cl₂ will react with:

The final step is to convert 0.265 mol CS₂ to grams CS₂ using its molar mass (76.139 g/mol).

1 mol CS₂ = 76.139 grams CS₂

Therefore 0.265 mol CS₂ will be equal

The answer is: 20.18 grams carbon disulfide

Answer:

when an atom, typically a metal, loses an electron or electrons, and becomes a positive ion, or cation. Another atom, typically a non-metal, is able to acquire the electron(s) to become a negative ion, or anion.

Explanation:

The molarity of the solution after mixing 19g of sugar in 100ml of distilled water is 5.56×10⁻⁴/ml

The molarity is characterized as the complete number of moles of solute present in a given arrangement for each liter. It is otherwise called "molar focus" and is perused as "molar." It is addressed by the letter "M," and its unit is mol/L. The molarity of an answer is supposed to be one molar in the event that one mole of the solute disintegrates in one liter of the arrangement. The molarity of an answer relies upon the volume of the arrangement yet not the volume of the dissolvable. As the volume of the arrangements changes with the adjustment of states of being of the framework, the molarity of the given arrangement relies upon the actual properties of the framework, like pressure and temperature, in contrast to mass.

We know that molarity is given by the formula

M=number of moles of solute/volume of solution in ml

Here solute is sugar.For finding the moles of solute we need to find the molecular weight of sugar which is calculated as

Sugar(C₁₂H₂₂O₁₁)=12ˣ12 + 22ˣ1 + 16ˣ11=342g

Therefore,number of moles=19/342

Now,we have volume of solution in ml=100

Therefore,molarity=(19/342) /100

=>Molarity=19/34200

=>Molarity=5.56×10⁻⁴/ml

Hence,molarity is 5.56×10⁻⁴/ml

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Answer:Changes of state are physical changes. They occur when matter absorbs or loses energy. Processes in which matter changes between liquid and solid states are freezing and melting. Processes in which matter changes between liquid and gaseous states are vaporization, evaporation, and condensation

Explanation:

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Answer:

Al(NO₃)₃ + (NH₄)₃PO₄ —> AlPO₄ + 3NH₄NO₃

The coefficients are: 1, 1, 1, 3

Explanation:

__Al(NO₃)₃ + __(NH₄)₃PO₄ —> __AlPO₄ + __NH₄NO₃

The above equation can be balance as illustrated below:

Al(NO₃)₃ + (NH₄)₃PO₄ —> AlPO₄ + NH₄NO₃

There are 12 atoms of H on the left side and 4 atoms on the right side. It can be balance by writing 3 before NH₄NO₃ as shown below:

Al(NO₃)₃ + (NH₄)₃PO₄ —> AlPO₄ + 3NH₄NO₃

Now the equation is balanced.

The coefficients are: 1, 1, 1, 3

The three common states of matter are solid, liquid and gas. The intermolecular forces present between the particles in each state will be different. It is in gaseous state H₂O particles are fathers apart.

The gaseous state is the state of matter in which the intermolecular force of attraction is low than the liquid. The particles have a larger distance between the particles. The gaseous state of water is known as water vapor.

In gaseous state, the molecules have high kinetic energy and small intermolecular forces. Here the molecules can move randomly and the gas particles are highly compressible. They have lower density than solids and liquids.

The gaseous particles possess the property called diffusion. They have high volume and expand in the container they are placed. Here the particles move at higher speeds in all directions and hit each other.

Thus in gaseous form water has more freedom.

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Answer:

At STP (Standard Temperature and Pressure), the temperature is 273.15 K (0°C) and the pressure is 1 atm. The molar volume of any gas at STP is 22.4 L/mol.

Explanation:

Therefore, the volume of 225 moles of gas at STP would be:

V = n * V_m

where

V = volume of the gas

n = number of moles of the gas

V_m = molar volume of the gas at STP = 22.4 L/mol

Substituting the values, we get:

V = 225 mol * 22.4 L/mol

V = 5040 L

So the volume of 225 moles of a gas at STP would be 5040 liters.

Answer:

5049 L

Explanation:

got the answer correct

Increasing the amount of oxygen in the reaction would result in an increased yield of barium sulfate, as long as there is an adequate supply of barium sulfide.

In the given chemical equation, the reaction between barium sulfide (BaS) and oxygen gas (O2) produces barium sulfate (BaSO4).

When the amount of oxygen is increased in the reaction, it would favor the production of more barium sulfate. This is because oxygen acts as a reactant in the formation of barium sulfate. By increasing the concentration or availability of oxygen, more oxygen molecules will be available to react with the barium sulfide. The increase in oxygen will provide more oxygen atoms for the formation of sulfate ions (SO4^2-) from the sulfide ions (S^2-) in barium sulfide. Consequently, more barium sulfate will be produced in the reaction. Therefore, increasing the amount of oxygen in the reaction would result in an increased yield of barium sulfate, as long as there is an adequate supply of barium sulfide.

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The balanced equation for the reaction between sulfur (S₈) and oxygen (O₂) to form sulfur trioxide (SO₃) is 2S₈ + 16O₂ → 16SO₃.

Balancing chemical equations involves the addition of stoichiometric coefficients to the reactants and products.

The balanced equation for the reaction between sulfur (S₈) and oxygen (O₂) to form sulfur trioxide (SO₃) is determined as;

2S₈ + 16O₂ → 16SO₃

From the reactants side we can see that sulfur is 16 and also 16 in the product side. The number of oxygen in the reactant side is 32 and also 32 in the product side.

Thus, the balanced equation for the reaction between sulfur (S₈) and oxygen (O₂) to form sulfur trioxide (SO₃) is 2S₈ + 16O₂ → 16SO₃.

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Answer:

Explanation:

The percentage error of a certain measurement can be found by using the formula

\(P(\%) = \frac{error}{actual \: \: number} \times 100\% \\ \)

From the question

actual number = 200 g

error = 200 - 196.5 = 3.5

We have

\(p(\%) = \frac{3.5}{200} \times 100 \\ \)

We have the final answer as

Hope this helps you

If a snail crawls 55 inches per day ,the snail will crawl approximately \(3.2 * 10^3 centimeters.\)

To convert inches to centimeters, we need to use the conversion factor: 1 inch = 2.54 centimeters.

First, let's calculate the distance the snail crawls in inches in 23 days. We can multiply the daily distance by the number of days:

Distance in inches = 55 inches/day × 23 days = 1265 inches.

Now, to convert the distance from inches to centimeters, we multiply the distance in inches by the conversion factor:

Distance in centimeters = 1265 inches × 2.54 cm/inch = 3215.1 cm.

Rounding to the appropriate number of significant figures, the snail will crawl approximately 3215 cm or \(3.2 * 10^3 centimeters.\) in 23 days.

Therefore, the answer is  Option 3:\(3.2 * 10^3 centimeters.\)

This means that in 23 days, the snail will crawl approximately\(3.2 * 10^3 centimeters.\)

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The properties of a natural resource that make it useful for humans as a material or energy source is the ability to convert mass into energy and vice versa.

The expression natural resources make reference to all types of matter and energy extracted from nature that can be used to produce goods and services.

Some examples of natural resources include for example irreversible resources such as fossil fuels (i.e., oil, or coal, gas, minerals such as metals, rocks, etc) as well as those based on the use of reversible energy such as eolic air energy, solar radiation or sunlight, soil and hydric resources or water.

Therefore, with this data, we can see that natural resources can be defined as any material and or energy obtained from nature that may be irreversible or reversibly used to produce goods and services.

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Answer:

heat energy

Explanation:

Chemical reactions often involve changes in energy due to the breaking and formation of bonds. Reactions in which energy is released are exothermic reactions, while those that take in heat energy are endothermic.

Answer:

B - Exocytosis

Explanation:

Exocytosis is the process by which a large amount of molecules are released; thus it is a form of bulk transport. In exocytosis, membrane-bound secretory vesicles are carried to the cell membrane, and their contents are secreted into the extracellular environment.

Answer:

b is the answer

Explanation:

The final temperature of the water is: T_final = 45.0°C

We can use the formula for the specific heat capacity of the water to solve this problem:

q = mcΔT

First, we can calculate the initial energy of the water:

q = mcΔT

q = (10.0 g) (4.184 J/g°C) (25.0°C)

q = 1,046 J

Next, we can calculate the final temperature after absorbing 840 J:

q = mcΔT

840 J = (10.0 g) (4.184 J/g°C) (ΔT)

ΔT = 20.0°C

Therefore, the final temperature of the water is:

T_final = T_initial + ΔT

T_final = 25.0°C + 20.0°C

T_final = 45.0°C

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Answer:

You answer is correct

Electrons have a negative charge. The charge on the proton and electron are exactly the same size but opposite. Neutrons have no charge.

Thank you and please rate me as brainliest as it will help me to level up

Answer:

if you meant the Earth's revolving orbit. It is an elliptical orbit.

will you mark me the BRAINLIEST please

Once alcohol is in the bloodstream it will reach the brain in a few seconds to minutes, depending on various factors such as the amount and concentration of alcohol consumed, body weight, metabolism, and other individual factors.

Alcohol can swiftly cross the blood-brain barrier after it is ingested, having an impact on the brain and neurological system. Depending on the quantity and frequency of drinking, alcohol's effects on the brain can range from minor disturbances in judgment and coordination to more serious consequences including loss of consciousness and, in the worst circumstances, death.

Long-term changes in brain structure and function, such as cognitive impairment and a higher chance of developing specific neurological and mental illnesses, can also result from chronic alcohol consumption.

Once alcohol is in the bloodstream it will reach the brain in a few seconds to minutes, depending on various factors such as the amount and concentration of alcohol consumed, body weight, metabolism, and other individual factors.

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The solubility of NH₃ in water at 90°C is approximately 0.03 g per 100 g of water.

The solubility can be determined from a solubility table or by using the appropriate equilibrium constant.

According to a solubility table, the solubility of ammonia in water at 90°C is approximately 88 g per 100 g of water.

Alternatively, the equilibrium constant for the dissolution of ammonia in water at 90°C can be used to calculate the solubility.

The equilibrium constant (K) for the reaction:

NH3 (g) + H2O (l) ⇌ NH4+ (aq) + OH- (aq)

is approximately 1.76 x 10⁻⁵ at 90°C.

Using the equilibrium constant expression:

K = [NH4+][OH-]/[NH3][H2O]

Assuming that the concentration of water remains constant at 100 g per 100 g of solution, and that the concentration of NH4+ and OH- are negligible compared to that of NH3, the solubility of NH3 can be calculated as:

[NH3] = K[H2O] = 1.76 x 10⁻⁵ x 100 = 1.76 x 10⁻³ mol/L

Converting to grams per 100 g of water:

1.76 x 10⁻³ mol/L x 17.03 g/mol = 0.03 g/100 g of water

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The complete question is below:

determine the solubility of NH₃ in water at 90° C​

Answer:

The human brain is the body's control center, receiving and sending signals to other organs through the nervous system and through secreted hormones. It is responsible for our thoughts, feelings, memory storage and general perception of the world. The human heart is a responsible for pumping blood throughout our body

Four peripheral hydrogen atoms and two singly-bonded nitrogen atoms make up the molecule of hydrazine.

Thus, It is a colourless, poisonous irritant and sensitizer in its anhydrous form, which harms the central nervous system and causes symptoms as severe as tumours and convulsions.

In addition to having a strong reducing agent that makes it highly explosive, hydrazine has a strong smell that is similar to that of ammonia.

Given this, it appears odd that over 100,000 metric tonnes of the substance are produced annually throughout the world. But hydrazine does have an impact on our daily activities. It can save our lives, give us food and clothing, keep us warm, and even transport us to the moon. It even has the ability to go back in time.

Thus, Four peripheral hydrogen atoms and two singly-bonded nitrogen atoms make up the molecule of hydrazine.

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