What is the noble gas core in the electron configuration for ru?.

Answer:

7.0 times 10 to the -17th power

Explanation:

Speed

Explanation:

The distance travelled by a body per unit time

Answer:

Follows are the answer to this question:

Explanation:

pleas find the attachment file.

Formula for ΔE:

\(\Delta E = \sum \text{Bond energy of recatants}- \sum \text{Bond energy of Products}\)

    \(= 6 ( B.E_{C-C}) +12 (B.E_{C-H}) +(B.E_{o \ = \ o}) - 6(B.E_{C-C})-10(B.E_{C-H}) -( B.E_{C=0}) -2(B.E_{0-H})\\\\ = \bold{2 (B.E_{C-H}) +(B.E_{o \ = \ o}) -( B.E_{C=0}) -2(B.E_{0-H})}\\\\\)

to calculate the value for ΔE put the value in above formula:

The three functions of the stem:

According to the graph presented, we can see that NaNO3 has a higher solubility at 30°C, as we can see more than 100 grams of NaNO3 can be dissolved in 100 grams of water, whereas all other solutes will have a way lower value. Letter D

For getting an indication whether a chemical reaction or chemical change has taken place, if  B)Heat is given off then chemical reactions occur. So,correct option is B.

Chemical reactions are surrounding us, from the digestion of food in our body to how the light we get from the sun is the consequence of compound responses. Prior to starting with compound responses, realizing about physical and synthetic changes is significant

Option A can't be the response is dissolving is an actual change. No substance response occurred.

Option B is the response as it is an EXOTHERMIC reaction so intensity will be emitted.

Option C can't be the response as dissolving is essentially ions becoming particles, not a synthetic response by which a reactant responds with one more reactant to shape an item.

Option D can't be the response. Same explanation with respect to why An isn't the response.

Hence, correct option is B.

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(Complete question) is:

When determining whether a chemical reaction has taken place, you observe and look for several indicators. Which would be considered an indication that a chemical reaction or chemical change has taken place? A) Solid melts. B) Heat is given off. C) Substance dissolves D) Substance changes shape.

The frequency of green light wave that has a wavelength of 5.7 x 10⁻⁷meters is 175.4×10⁴ per meter.

Wavelength is the distance between identical points (adjacent crests) in the adjacent cycles of a waveform signal propagated in space or along a wire. In wireless systems, this length is usually specified in meters (m), centimeters (cm) or millimeters (mm).

Wavelength is inversely related to frequency, which refers to the number of wave cycles per second. The higher the frequency of the signal, the shorter the wavelength.Thus, frequency=1/wavelength=1/5.7×10⁻⁷=175.4×10⁴ m⁻¹.

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Answer: 27

Explanation: multiply 3.0 3 times

Answer:

covalent bonds

Explanation:

Nitrogen atoms will form three covalent bonds (also called triple covalent) between two atoms of nitrogen because each nitrogen atom needs three electrons to fill its outermost shell.

(if it is still confusing i have another way of explaining so jus let me know :)

Answer: Covalent

Explanation:

The final temperature of the gas is approximately 40.96 Kelvin.

To determine the final temperature of the gas, we can use the ideal gas law, which states:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles of the gas, R is the ideal gas constant, and T is the temperature in Kelvin.

First, let's convert the given temperatures to Kelvin. We have:

Initial temperature: -125 degrees Celsius = 148 K (approximate)

Final temperature: Unknown

The initial conditions of the gas are as follows:

Initial pressure (P1) = 1.25 atm

Initial volume (V1) = 1250 mL = 1.25 L (since 1 L = 1000 mL)

Initial temperature (T1) = 148 K

The final conditions of the gas are as follows:

Final pressure (P2) = 50.0 atm

Final volume (V2) = 325 mL = 0.325 L

Final temperature (T2) = Unknown

Using the ideal gas law, we can set up the following equation:

(P1 * V1) / T1 = (P2 * V2) / T2

Substituting the known values:

(1.25 atm * 1.25 L) / 148 K = (50.0 atm * 0.325 L) / T2

Simplifying the equation:

T2 = (50.0 atm * 0.325 L * 148 K) / (1.25 atm * 1.25 L)

T2 = 40.96 K

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The intermolecular forces of attraction between two different molecules are called adhesive forces.

Adhesive forces refer to the attractive forces between molecules of different substances. These forces occur at the interface or boundary between the two substances.

When different molecules come into contact, such as a liquid and a solid, the adhesive forces cause the molecules to stick or adhere to each other.

These forces are responsible for various phenomena, such as capillary action, where a liquid can rise or be drawn into a narrow tube against the force of gravity.

Adhesive forces also play a role in the wetting of surfaces, where a liquid spreads out or forms a thin film on a solid surface.

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Answer: D. Synthesis

Explanation:

Sodium Oxide + Water = Sodium Hydroxide

1) When a solution of AgNO3 and NaCl  are mixed, a double replacement reaction occurs, resulting in the formation of AgCl and NaNO3.

The solubility product constant (Ksp) for AgCl is given as 1.77 ×\(10^{-10\). Since Ksp is very small, it indicates that AgCl has low solubility in water. When AgNO3 and NaCl are mixed, AgCl will precipitate out of the solution until it reaches saturation, forming a saturated solution of AgCl.

2) To calculate the pH of the buffer solution, we need to consider the dissociation of pyruvic acid and the conjugate base, sodium pyruvate (CH3COCOO⁻).

CH3COCOOH ⇌ CH3COCOO⁻ + H⁺

The Ka value for pyruvic acid is given as 4.1 × \(10^{-3\).

Since the concentrations of pyruvic acid and sodium pyruvate are given, we can assume that the initial concentration of H⁺ is negligible compared to the concentrations of pyruvic acid and sodium pyruvate.

Using the Henderson-Hasselbalch equation:

pH = pKa + log([A⁻]/[HA])

Substituting the values into the equation:

pH = -log(4.1×10–3) + log(0.0507/0.0527)

pH = -log(4.1×10–3) + log(0.0507) - log(0.0527)

pH = -(-2.39) + (-1.293) - (-1.276)

pH = 2.39 + 1.293 + 1.276

pH ≈ 4.96

Therefore, the pH of the buffer solution is approximately 4.96.

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Answer:

Every HCl molecule contains two atoms, H and Cl.

Explanation:

Explanation: One mole of anything is 6.022×1023 of anything, including molecules.

Answer:

There are 2 atoms in 2 HCI

Explanation:

Hope this helps

Answer:

Most plants cannot use nitrogen directly from the atmosphere.

Explanation:

The three condensed structures of glycine under different conditions are,

(a) Ionized Form (Zwitterion): H₃N⁺ - CH₂ - COO⁻

(b) In Acidic Solution: H₃N⁺ - CH₂ - COOH

(c) In Basic Solution: H₂N - CH₂ - COO⁻

(a) Ionized Form (Zwitterion):

In its ionized form, glycine exists as a zwitterion, meaning it has both a positive and a negative charge within the molecule. The amino group (NH2) donates a proton (H+) to the carboxyl group (COOH), resulting in the formation of an internal salt. Here's the condensed structure:

H₃N⁺ - CH₂ - COO⁻

(b) In Acidic Solution:

In acidic solution, glycine donates a proton from its carboxyl group, resulting in the formation of a positively charged glycine ion. Here's the condensed structure:

H₃N⁺ - CH₂ - COOH

(c) In Basic Solution:

In basic solution, glycine accepts a proton, usually from the surrounding solvent, forming a negatively charged glycine ion. Here's the condensed structure:

H₂N - CH₂ - COO⁻

Please note that the structures provided are simplified condensed structures and do not show the explicit bonding and geometry of the atoms. The actual structures may involve bond angles and hybridization of the atoms.

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Partial pressure of hydrogen (H2): 136.18 mmHg

Partial pressure of helium (He):  482.22 mmHg

To determine the partial pressure of each gas in the mixture, we need to use the mole fraction of each gas and the total pressure.

First, we need to calculate the number of moles for each gas using their respective masses and molar masses.

For hydrogen (H2):

Molar mass of H2 = 2.016 g/mol

Number of moles of H2 = mass of H2 / molar mass of H2 = 8.08 × 10⁻² g / 2.016 g/mol

For helium (He):

Molar mass of He = 4.0026 g/mol

Number of moles of He = mass of He / molar mass of He = 0.577 g / 4.0026 g/mol

Next, we calculate the mole fraction of each gas:

Mole fraction of H2 = moles of H2 / total moles

Mole fraction of He = moles of He / total moles

Finally, we can calculate the partial pressure of each gas using their respective mole fractions and the total pressure:

Partial pressure of H2 = Mole fraction of H2 × Total pressure

Partial pressure of He = Mole fraction of He × Total pressure

Partial pressure of H2 =  0.22 × 619 mmHg = 136.18 mmHg (rounded to two decimal places)

Partial pressure of He = 0.78 × 619 mmHg = 482.22 mmHg (rounded to two decimal places)

Therefore, the partial pressure of hydrogen (H2) in the mixture is approximately 136.18 mmHg, and the partial pressure of helium (He) is approximately 482.22 mmHg.

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Explanation:

1. cryolite

2. cell

3. bauxite

4.

5.

6.

7.

8.

9. replaced

this is all I know. I'm sorry I could not answer all

Answer:

Explanation:

Edmentum

The arrangement of electrons within an atom's orbitals is known as its electronic configuration. The atomic number, which is equal to the number of protons in every neutral atom, is the set quantity of electrons that make up each neutral atom.

The distribution of an element's atoms' electrons throughout several atomic orbitals is symbolically represented by the electronic configuration of that element.

A standardized nomenclature is used for expressing electron configurations, in which the energy level and type of orbital are written first, followed by the number of electrons in the orbital, which is expressed in superscript.

The correct matches are:

Zn: [Ar] 3d¹⁰ 4s²

Fe: [Ar] 3d⁶ 4s²

Sn: [Kr] 4d¹⁰5s²5p²

Cl: [Ne] 3s² 3p⁵

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5.63 x 10²⁴ molecules of Na₂O will be made with 75 grams of O₂,  By converting the mass of O₂ to moles and using the stoichiometric ratio, we can calculate the number of molecules of Na₂O produced.

To determine the number of molecules of Na₂O formed from 75 grams of O₂, we need to use the concept of moles and the balanced equation for the reaction.

The balanced equation for the reaction between O₂ and Na₂O is:

2 Na₂O + O₂ ⇒ 4 Na₂O

From the equation, we can see that for every 1 mole of O₂, 4 moles of Na₂O are produced.

First, we need to convert the mass of O₂ to moles. The molar mass of O₂ is approximately 32 g/mol. Using the formula:

moles = mass / molar mass

we find:

moles of O₂ = 75 g / 32 g/mol ≈ 2.34 mol

Since the stoichiometric ratio between O₂ and Na₂O is 1:4, the number of moles of Na₂O produced will be 4 times the number of moles of O2:

moles of Na₂O = 4 x 2.34 mol = 9.36 mol

To convert moles to molecules, we use Avogadro's number, which states that there are approximately 6.022 x 10²³ molecules per mole. Therefore:

number of molecules of Na₂O = moles of Na₂O x Avogadro's number

≈ 9.36 mol x 6.022 x 10²³ molecules/mol

Calculating the result, we find that approximately 5.63 x 10²⁴ molecules of Na₂O will be produced from 75 grams of O₂.

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The four types of reactions are combination, decomposition, single displacement and double displacement.

Here, correct answer will be

Combination reactions involve two reactants combining to form one product. For example, when sodium and chlorine react to form table salt (sodium chloride).

Decomposition reactions are the opposite of combination reactions - one reactant breaks down into two or more products. For example, when water decomposes into hydrogen and oxygen.

Single displacement reactions involve one reactant displacing another from a compound. For example, when magnesium replaces hydrogen in water to form magnesium hydroxide.

Finally, double displacement reactions involve two reactants exchanging parts of their molecules to form two different products. For example, when sodium hydroxide and hydrochloric acid react to form sodium chloride and water.

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Answer:

Earth’s ____gravity_____ (g) is nearly the same at any point on its surface.

The value of g near Earth’s surface is _ten__ meters per second squared (__10 (preciesly it is 9.8)___ m/s2).

If m is the mass of an object and g is gravity, then we can find the weight, W, of the object by using the

formula W = __m×g__.

The weight of an object is approximately equal to _g__ ______________ if the mass of the object is 1 kilogram on Earth, where g = __10 (9.8)___ m/s2 fill in the blank

Explanation:

Answer:

There are 2 nitrogen atoms on the product side.

There are 6 hydrogen atoms on the reactant side.

Explanation:

Answer:

There are  2  nitrogen atoms on the product side.

There are  6  hydrogen atoms on the reactant side.

Explanation:

As seen in the picture below,

Answer:

Nervous System

Explanation:

They work together

Answer:

The correct answer is - D C2H4.

Explanation:

Saturated hydrocarbons are hydrocarbons with single covalent C-C bonds. They are known as alkanes. The general formula for these hydrocarbons is  CnH2n+2

Unsaturated hydrocarbons the hydrocarbons with double or triple covalent C-C bonds. They are known as alkenes and alkynes respectively. The general formula for these hydrocarbons is  CnH2n and CnHn-2

For the given options:

Option D: C2H4, is the simplest alkene with a double bond so it is an unsaturated hydrocarbon.

Answer:

Scientist used models to explain and predict the behavior of real object or system

The volume in ml of 0.5 m koh should be added to 3.11 g of oxalic acid before diluting with water to 500 ml to prepare a solution with a ph of 4.6 is 69 mL.

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Answer: Sexual reproduction involves parental care, while asexual reproduction does not.

The statement which has exceptions is that sexual reproduction involves parental care, while asexual reproduction does not.

Sexual reproduction is a type of reproduction where the offsprings are produced by the combination of genetic material of two individuals which are of different sexes.

It is the dominant form of reproduction in living beings. Here, the genetic information is stored in chromosomes which are present in the nucleus of reproductive cells which are called gametes.Gametes fuse to form a diploid zygote.Zygote then develops into a new living being.

Because of sexual reproduction variations in living beings are possible because of reshuffling of genetic material. Here, haploid gametes form diploid zygotes except in case of bacteria.

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