What element only has 3 electrons?

Answer:

36.02g bbbbbbbbbbb hbbnjkkkj

Answer:

36.02g

Explanation:

Hope this helps!

Answer:

A balanced equation is a chemical equation where there are equal numbers of atoms of each element on both sides of the equation.

A chemical equation that has a equal amount of each

each element on the left and right sides

Answer:

i think it's freezing of permafrost. so sorry if it's wrong lol

Answer:

D

Explanation:

The fifth electron, or IE5, would have a very high ionization energy. Which ionization energy for silicon atoms will significantly rise from the previous ionization energy?

Ionization energy: how is it calculated?

The smallest energy of light quanta (photons) or electrons accelerated to a specified energy that will liberate the least bound atomic electrons is used to calculate the ionization energy of atoms, abbreviated as Ei. On individual atoms, the measurement is carried out in the gas phase.

Why does the ionization energy increase?

On the periodic table, the first ionization energy typically climbs across a period from left to right. The higher nuclear charge results in a closer bond between the outermost electron and the nucleus.

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Answer:

D) the positive charges collect at the top of the cloud and the negative charges at the bottom

Explanation:

Answer:

different , same, same, same

Moving hot food in a covered pan to a cooler space, such as a storage room, or submerging it in ice water, is another option. Ice can also be used to hasten the cooling process.

Soups can be chilled by submerging them in cold water. This technique aids in a swift and secure drop in food temperature. To make a slush, put some ice in a big container or sink and add some water. After that, put the plate of food to be chilled into the ice bath. bathing in ice water and stirring the food often.Food is stirred with ice paddles, which are plastic containers that have been frozen after being filled with water.using ice as a component (if water is an ingredient).chiller that jars or tumbles.

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Answer:

\(\boxed {\boxed {\sf B. \ 0.5 \ M}}\)

Explanation:

Molarity is a measure of concentration in moles per liter. The formula for calculating molarity is:

\(molarity= \frac{moles \ of \ solute}{ liters \ of \ solution}\)

There are 2 moles of a compound or the solute. There are 4 liters of water or the solution.

Substitute the values into the formula.

\(molarity = \frac{ 2 \ mol}{ 4 \ L}\)

Divide.

\(molarity= 0.5 \ mol /L\)

1 mole per liter is equal to 1 Molar, so the solution's molarity of 0.5 mol/L is equal to 0.5 M.

\(molarity = 0.5 \ M\)

The molarity of the solution is 0.5 Molar and choice B is correct.

According to the bohr model of the atom, the single electron of a hydrogen atom circles the nucleus is specific allowed orbits.

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If a forensic scientist uses a reagent to release carbon monoxide from a blood sample, the next step they should take is to use gas chromatography to measure the carbon monoxide. The correct option is B.

Gas chromatography is a technique commonly used to separate and analyze the components of a gas mixture. In this case, it can be used to detect and quantify the amount of carbon monoxide released from the blood sample.

Gas chromatography works by separating the components of a gas mixture based on their different affinities for the stationary phase and mobile phase.

The carbon monoxide released from the blood sample can be injected into the gas chromatograph, where it will travel through a column and be separated from other gases present in the mixture.

By measuring the retention time and peak area of the carbon monoxide peak, the forensic scientist can determine the concentration of carbon monoxide in the blood sample.

Performing a color test, using a spectrophotometer, or using ultraviolet light would not be suitable methods for specifically measuring the amount of carbon monoxide released. Gas chromatography provides a more precise and quantitative analysis for this purpose. The correct option is B.

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The statement that is FALSE about VSEPR is "When electrons are not shared equally, it causes the molecule to bend"

Option C

VSEPR theory does not imply that unequal sharing of electrons causes a molecule to bend.

Rather, it is the repulsion between electron pairs, whether they are bonding or non-bonding, that determines the molecular geometry.

The VSEPR theory is based on the idea that valence electron pairs in the outermost shell of an atom repel each other, and the resulting repulsion determines the geometry of the molecule.

Therefore, Option C is false about VSEPR.

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Answer:

5.13 L

Explanation:

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

Initial volume (V₁) = 5.33 L

Initial temperature (T₁) = 21 °C

Final temperature (T₂) = 10 °C

Final volume (V₂) =?

Next, we shall convert celsius temperature to Kelvin temperature. This can be obtained as follow:

T(K) = T(°C) + 273

Initial temperature (T₁) = 21 °C

Initial temperature (T₁) = 21 °C + 273

Initial temperature (T₁) = 294 K

Final temperature (T₂) = 10 °C

Final temperature (T₂) = 10 °C + 273

Final temperature (T₂) = 283 K

Finally, we shall determine the final volume. This can be obtained as follow:

Initial volume (V₁) = 5.33 L

Initial temperature (T₁) = 294 K

Final temperature (T₂) = 283 K

Final volume (V₂) =?

V₁/T₁ = V₂/T₂

5.33 / 294 = V₂ / 283

Cross multiply

294 × V₂ = 5.33 × 283

294 × V₂ = 1508.39

Divide both side by 294

V₂ = 1508.39 / 294

V₂ = 5.13 L

Thus, the new volume of the football is 5.13 L

Every substance might have its own unique properties. They can be of characteristic physical and chemical properties  by which they can be identified.

Physical properties of a substance include the properties related to its mass, volume, density its phase change etc. Various physical properties include density, conductivity, melting point, boiling point etc.

Chemical properties of a substance include its reactivity, bond type etc. The reactivity of each substance may vary based on their bond type and intermolecular force of attraction. Each substance shows different reactivity  towards air, water, with other metals and chemicals.

Similarly, the state of each substance it mostly exists will be different. Therefore, by determining the physical and chemical properties of the substance, we can identify the substance.

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According to the forces of attraction, in the frozen yogurt  which is melted the  particles move faster and slide past each other in the melted yogurt.

Forces of attraction  is a force by which atoms in a molecule  combine. it is basically an attractive force in nature.  It can act between an ion  and an atom as well.It varies for different  states  of matter that is solids, liquids and gases.

The forces of attraction are maximum in solids as  the molecules present in solid are tightly held while it is minimum in gases  as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.

The physical properties such as melting point, boiling point, density  are all dependent on forces of attraction which exists in the substances.

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Answer:

B

Explanation:

Because a ball falling down is a good strong force

Correct Answer:

A ball hitting a bat

The mass of water produced when 44.0 g of propane burns completely in the air is 72.0g.

The molar masses of propane and water are \($44 \mathrm{~g} / \mathrm{mol}$\)and \($18 \mathrm{~g} / \mathrm{mol}$\) respectively.

44.0 grams of propane corresponds to 1 mole of propane.

According to the balance chemical equation, \($\mathrm{C}_{3} \mathrm{H}_{8}(\mathrm{~g})+5 \mathrm{O}_{2}(\mathrm{~g}) \rightarrow 3 \mathrm{CO}_{2}(\mathrm{~g})+$\) \($4 \mathrm{H}_{2} \mathrm{O}(1)$\)

1 mole of propane gives 4 moles of water.

Thus, the combustion of\($44.0 \mathrm{~g}$\) ( 1 mole) of propane will give 4 moles of water.

Mass of water obtained \($=4 \times 18=72.0 \mathrm{~g}$\).

The molar mass of a chemical compound is determined by dividing its mass by the quantity of that compound, expressed as the number of moles in the sample, measured in moles. The molar mass of a material is a bulk attribute rather than a molecular one.

Multiply each element's atomic weight (found in the periodic table) by the quantity of that element's atoms in the compound. 3. Add up the totals, and then follow the number with the units of grams/mole.

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so dfhhdjdjjfjfjjdjdjdj

The [H₃O⁺] values for each solution are:

A) NaOH: 7.9×10⁻³ M

B) Milk of magnesia: 7.9×10⁻⁵ M

C) Aspirin: 1.2×10⁻¹¹ M

D) Seawater: 2.0×10⁻⁶ M

To calculate the concentration of hydronium ions ([H₃O⁺]) in each aqueous solution, we can use the fact that water dissociates to form equal concentrations of hydronium ([H₃O⁺]) and hydroxide ([OH⁻]) ions in pure water.

This is represented by the equilibrium equation:

H₂O ⇌ H₃O⁺ + OH⁻

In a neutral solution, the concentrations of [H₃O⁺] and [OH⁻] are equal, resulting in a pH of 7.

The pOH is the negative logarithm of the hydroxide ion concentration ([OH⁻]). The relationship between pH, pOH, and the ion concentrations is given by the equation:

pH + pOH = 14

We can rearrange this equation to solve for [H₃O⁺] in terms of [OH⁻]:

[H₃O⁺] =\(10^{-pOH}\)

Now, let's calculate the [H₃O⁺] for each solution.

A) NaOH, 8.0×10⁻³ M:

[OH⁻] = 8.0×10⁻³ M

pOH = -log10([OH⁻]) = -log10(8.0×10⁻³) ≈ 2.1

[H₃O⁺] =\(10^{-pOH}\) = 10^(-2.1) ≈ 7.9×10⁻³ M

B) Milk of magnesia, 1.2×10⁻⁵ M:

[OH⁻] = 1.2×10⁻⁵ M

pOH = -log10([OH⁻]) = -log10(1.2×10⁻⁵) ≈ 4.92

[H3O+] = \(10^{-pOH}\) = 10⁻⁴°⁹² ≈ 7.9×10⁻⁵ M

C) Aspirin, 2.0×10⁻¹¹ M:

[OH⁻] = 2.0×10⁻¹¹ M

pOH = -log10([OH⁻]) = -log10(2.0×10⁻¹¹) ≈ 10.70

[H₃O⁺] = \(10^{-pOH}\) = 10¹⁰°⁷⁰ ≈ 1.2×10⁻¹¹ M

D) Seawater, 2.0×10⁻⁶ M:

[OH⁻] = 2.0×10⁻⁶ M

pOH = -log10([OH⁻]) = -log10(2.0×10⁻⁶) ≈ 5.70

[H₃O⁺] = \(10^{-pOH}\) = 10⁻⁵°⁷⁰ ≈ 2.0×10⁶ M

Therefore, the [H₃O⁺] values for each solution are:

A) NaOH: 7.9×10⁻³ M

B) Milk of magnesia: 7.9×10⁻⁵ M

C) Aspirin: 1.2×10⁻¹¹ M⁶

D) Seawater: 2.0×10⁻⁶ M

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Carbon-carbon bond-order in benzene is 1.5 due to

\( \sf \: Bond \: order= \frac{Total \: coordination \: bond \: resonating \: structure }{Total \: resonating \: structure}  

\( \sf \: Bond \: order= \frac{Total \: coordination \: bond \: resonating \: structure }{Total \: resonating \: structure}  \)

\( \sf \: Bond \: order= \frac{3}{2} = 1.5\)

Answer:

because when girl slide down then her body was in full speed and after that she gets up her hair is in the air because when she slide down her hair was also blowing in the air and after that her body thinks that they're still sliding down.so,it happened.

The pillar of sustainability broken by recycling electronics in India is environmental sustainability. Implementing a law that restricts electronics recycling to the US would not necessarily be the most effective solution, as it overlooks the complex global dynamics of electronic waste management.

Recycling electronics in India often involves improper disposal methods, such as burning or dismantling without proper safety measures. This leads to environmental pollution, including the release of hazardous substances into the air, soil, and water, thus violating the principle of environmental sustainability.

However, simply mandating that electronics can only be recycled in the US may not be the most optimal solution. Electronic waste is a global issue, and restricting recycling to a single country disregards the fact that electronic products are manufactured and consumed worldwide. A more comprehensive approach to addressing electronic waste would involve international cooperation, strict regulations, and monitoring of recycling practices to ensure they meet environmental standards.

Efforts should focus on improving recycling practices globally, including promoting responsible electronic waste management, developing sustainable recycling infrastructure in multiple countries, and encouraging the adoption of safe and environmentally friendly recycling practices. This approach would foster global sustainability and address the challenges associated with electronic waste disposal more effectively than a geographically limited restriction.

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The percentage of salt (by mass) in this mixture is 21.29%.

Percentage by mass, also known as mass percentage or weight percentage, is a way to express the concentration of a substance in a mixture. It represents the proportion of the mass of a solute (the substance being dissolved) to the total mass of the solution or mixture, expressed as a percentage.

The percentage of salt by mass in this mixture can be calculated by dividing the mass of salt by the total mass of the mixture and multiplying by 100.

The total mass of the mixture is 1.48 lb + 5.47 lb = 6.95 lb.

The percentage of salt by mass is then:

Percentage of salt by mass = (1.48 lb / 6.95 lb) x 100 = 21.29%

Therefore, the percentage of salt by mass in this mixture is 21.29%.

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The car person made a commission of $9,600 in March. This means they earned 4% of the total sales amount as their commission for the cars sold during that month.

The car person sold 12 cars in March with a total sales amount of $240,000. To calculate their commission, we need to multiply the total sales amount by the commission rate.

The commission rate is given as 4%, which can be expressed as a decimal by dividing it by 100: 4% = 0.04.

To find the commission, we multiply the total sales amount by the commission rate:

Commission = $240,000 * 0.04

Commission = $9,600

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yes.

Explanation:

water is a universal solvent.

Answer:

the answer is D I would say thats the answer

Answer:

I really don't know how I got to switching to a new job because I was in a hurry

Thheoretically, 9.33 x 10²³ molecules of hydrogen chloride gas could be produced at STP by reacting 34.7 liters of hydrogen gas at STP with excess chlorine gas.

From the equation, we can see that 1 mole of H₂ reacts with 1 mole of Cl₂ to produce 2 moles of HCl. Therefore, the number of moles of HCl that can be produced from 34.7 L of H₂ at STP (standard temperature and pressure, which is 0°C and 1 atm) is

n(H₂) = V/Vm = 34.7 L / 22.4 L/mol = 1.55 mol

Here, Vm = 22.4 L/mol

Since hydrogen is in excess, the number of moles of HCl produced is also 1.55 mol.

Now, we can convert the number of moles of HCl to the number of molecules using Avogadro's number, which is 6.022 x 10²³ molecules/mol. Therefore

N(HCl) = n(HCl) x \(N_A\) = 1.55 mol x 6.022 x 10²³ molecules/mol

= 9.33 x 10²³ molecules

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Matter is found all around us and is present in all substances in the universe. Substances have a uniform composition and changes in this composition of of a substance is called chemical reaction.

The appropriate words that fill in the blanks are;

1) Mass

2) Substance

3) Properties

4) Physical

5) Density

6) Chemical

Matter has mass and occupy space. Matter with a uniform and unchanging composition is called a substance.

Substances have physical and chemical properties. The physical properties of a substance such as density can be observed without changing the composition of the substance.

Chemical properties of a substance such as rusting can only be observed when the chemical composition of the substance is altered(chemical reaction).

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