Consider the following nuclear equation involving the element Mercury.200/80Hg + =201/80HgA. Identify the particle that reacted with Mercury 200/80B Why did the symbol of Mercury not change in this reaction?

There will be 0.39 moles

Take a look at the He gas in the tank:

P = 2.80 atm, or pressure

Volume = 5.00 liters.

T = (273 + 155) is the temperature. K = 428 K

R = 0.08206 L atm/L of gas (mol K)

Charle's law, Boyle's law, and Gay-Lussac law are the three gas laws that make up the combined gas law, commonly referred to as a general gas equation. For a certain amount of gas, the law illustrates the relationship between temperature, volume, and pressure.

Gas law PV = nRT

So, n = PV/. (RT)

He gasses number = 2.80 x 5.00 / (0.08206 x 428) mol equals 0.39 mol.

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Answer:

T₂ = 39.4 °K

Explanation:

Because you are only dealing with volume and temperature, you can use Charles' Law to find the missing value. The formula looks like this:

V₁ / T₁ = V₂ / T₂

In this formula, "V₁" and T₁" represent the initial volume and temperature. "V₂" and "T₂" represent the final volume and temperature. You have been given values for all of the variables except for "T₂". Therefore, by plugging these values into the formula, you can simplify to find the answer.

V₁ = 350 mL                     T₁ = 45 °K

V₂ = 400 mL                     T₂ = ?

V₁ / T₁ = V₂ / T₂                                        <----- Charles' Law formula

(350 mL)(45 °K) = (400 mL)T₂                <----- Insert values into variables

15750 = (400 mL)T₂                                <----- Multiply left side

39.4 = T₂                                                 <----- Divide both sides by 400

Answer:

increasing the positive charge of the positively charged object and increasing the negative charge of the negatively charged object would make the oppositely charged objects attract each other more.

IUPAC name for the compound is 5,6 Dimethyl Heptene.

This refers to a naming based on the highest length of the carbon molecule- chains that are joined by either a single bond, continuous chain, or ring.

In IUPAC naming / Nomenclature, multiple bonds or atoms other than carbon and hydrogen are indicated by suffixes and prefixes with respect to a particular set of priorities.

Alkane= CnH2n+2

Alkene= CnH2n

Alkyne= CnH2n-2

C - Chain =7

H- Chain =14

CH₃ - bond= 2

Therefore,

n= 7

2n=14

It is an alkene hydrocarbon. The methyl group is present at the 5th and 6 chain.

Hence, the IUPAC name of the compound is 5,6 Dimethyl Heptene.

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Statement C is not true. A combination reaction is not called retrosynthesis.

Retrosynthesis is a term used in organic chemistry to describe the process of planning the synthesis of a complex molecule by breaking it down into simpler precursor compounds. On the other hand, a combination reaction refers to a chemical reaction where two or more substances combine to form a single compound.

Examples of combination reactions include the reactions mentioned in statements A and D, where magnesium reacts with oxygen to form magnesium oxide and sodium reacts with chlorine to form sodium chloride, respectively.

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Answer:

Strontium is a soluble earth metal with the nuclear number 38. Phosphate is a polyatomic particle containing phosphorus and oxygen molecules. Strontium loses electrons to turn out to be emphatically charged, and phosphate is an adversely charged particle.

Explanation:

When strontium phosphide comes into contact with water, it transforms into a solid that emits poisonous and combustible fumes. It is a highly reactive substance utilized in the production of chemically reactive devices as well as a laboratory reagent. Strontium phosphide is ionic.

Two elements combine to form an ionic compound. Sr is the metal while P is the non-metal in the ionic combination. After transferring its two valence electrons to P to create the phosphide ion, which has a net negative charge of -3, strontium becomes a cation.

Ions are charged particles that form when an atom (or group of atoms) receives or loses an electron, and ionic compounds are composed of these charged particles.

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Answer:

Electricity, Weapons, Medicine · Food Treatments, ect.

Answer:

11 grams of hydrogen and 89 grams of oxygen

Explanation:

Answer:

the answer to this question is C

The electron configuration of the iodide ion is 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p⁶. The correct option is option C.

The arrangement of an atom's or molecule's electrons in their respective atomic or molecular orbitals is known as its electron configuration; for instance, the electron configuration of the neon atom is 1s2 2s2 2p6.

According to electronic configurations, electrons move individually within each orbital while interacting with the average field produced by all other orbitals. The corrosion potential and reactivity of an atom may be calculated from its electron configuration. The electron configuration of the iodide ion is  1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p⁶.

Therefore, the correct option is option C.

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Answer:

Electrolysis is a process in which an electric current is used to drive a chemical reaction that would not otherwise occur.

When an electric current is passed through the cell, the ions in the electrolyte solution are attracted to the electrodes and undergo a chemical reaction at the surface of the electrodes.

hope this helps :)

6

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Stoichiometry

Step 1: Define

[RxN - Balanced] 2AgNO₃ (aq) + Cu (s) → Cu(NO₃)₂ (aq) + 2Ag (s)

Step 2: Identify

Reactants: 2AgNO₃ (aq) + Cu (s)

# of O atoms: 2(O₃) = 6 O

Answer:

Carboxylic acid is an organic acid containing a carboxyl group. The simplest examples are methanoic (or formic) acid and ethanoic (or acetic) acid. It is  used in the production of polymers, biopolymers, coatings, adhesives, and pharmaceutical drugs. They also can be used as solvents, food additives, antimicrobials, and flavorings.

Explanation:

Hope that helps.

Answer:

Mass = 2.65 g

Explanation:

Given data:

Mass of sodium carbonate = ?

Mass of water = 0.125 g

Molality = 0.200 m

Solution:

Formula:

Molality = number of moles of solute / mass of solvent in Kg

by putting values,

0.200 m = Number of moles of solute / 0.125 kg

Number of moles = 0.200 m × 0.125 kg

Number of moles = 0.025 mol

Mass of sodium carbonate:

Mass = number of moles × molar mass

Mass = 0.025 mol × 106 g/mol

Mass = 2.65 g

Answer:

Kaleidoscope is an optical toy consisting of two mirrors at a particular angle. Some common uses of the kaleidoscope are: Kaleidoscope produces beautiful patterns that are used by fashion designers. A kaleidoscope is used as a toy for entertainment.

- Petroleum fraction consisting mostly of \(C_{7}\) and \(C_{8}\) hydrocarbons

- The fraction is also called heavy naphtha

- Boiling in the range 90‒140 °C

- Ligroin is used as a laboratory solvent

- Ligroin it also esed as a motor fuel or as a solvent for fats and oils in dry cleaning

         [] All of these are different characteristics of ligroin​

         [] If you need more let me know  

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

Answer:

I will give you hints, as follows:

Explanation:

- two words: climate change

- methane smells funny

- the number of electric cars sold each year is increasing

- there´s a reason they´re call "renewable"

- GEOmetry, GEOlogy, GEOthermal

Hope this helps!

Answer:

C. Benzoic acid

-TheUnknownScientist

Answer:         ☆           ★                          ☆      ★           ☆    ★            ☆       ★  

Benzoic Acid          ☆              ★

Explanation:

There's a benzene ring(:

Based on the table above, the food chain Sun → grass → ground squirrel → coyote  most likely present in the prairie ecosystem. Therefore, the correct option is option B.

An ecosystem may be divided into its biotic constituents, which include all of its living members, and its abiotic constituents, which include minerals, the environment, soil, water, sunshine, and any other nonliving elements. The movement of energy through into the ecosystem as well as the cycle of nutrients inside the ecosystem are the two main factors that bind these components together.

The table below shows the organisms in a prairie ecosystem. It also shows where they get energy from. Based on the table above, the food chain Sun → grass → ground squirrel → coyote  most likely present in the prairie ecosystem.

Therefore, the correct option is option B.

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Answer:

Aluminium ions present's in 65.5mL of 0.210

M All 3solution is Given below-:

Answer and Explanation: 1

The first step is to determine the moles of aluminum ions. This utilizes the volume, molar concentration, and subscripts from the chemical formula of aluminum (III) fluoride as shown.

65.5 mL×1 L1000 mL×0.210 mol AlF31 L×1 mol Al3+1 mol AlF3=0.013755 mol Al3+65.5 mL×1 L1000 mL×0.210 mol AlF31 L×1 mol Al3+1 mol AlF3=0.013755 mol Al3+

To calculate for the number of aluminum ions, we use Avogadro's number as shown.

0.013755 mol Al3+×6.022×1023 ions1 mol Al3+=8.28×1021 ions Al3+.

Itz the ans. of collage ok man.

Answer:

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Explanation:

The first step is to determine the moles of aluminum ions. This utilizes the volume, molar concentration, and subscripts from the chemical formula of aluminum (III) fluoride as shown.

65.5. To calculate for the number of aluminum ions, we use Avogadro's number as shown.

Answer:

water is 9/10

chemical would be 1/10

Explanation:

180/200 would be water concentration in solution

and 20/200 would be chemical solution concentration in solution (if the chemical were to be polar and mix)

The empirical formula of the compound is C₂H₁₆S₂N₃O.

The moles of each element is as follows::

For CO₂:

Carbon (C) has a molar mass of 12.01 g/mol.

Oxygen (O) has a molar mass of 16.00 g/mol.

Moles of C in CO₂ = 2.08 g / 12.01 g/mol = 0.173 moles

Moles of O in CO₂ = 2.08 g / 16.00 g/mol = 0.130 moles

For H₂O:

Hydrogen (H) has a molar mass of 1.01 g/mol.

Oxygen (O) has a molar mass of 16.00 g/mol.

Moles of H in H₂O = 1.28 g / 1.01 g/mol = 1.27 moles

Moles of O in H₂O = 1.28 g / 16.00 g/mol = 0.080 moles

For SO₃:

Sulfur (S) has a molar mass of 32.06 g/mol.

Oxygen (O) has a molar mass of 16.00 g/mol.

Moles of S in SO₃ = 4.77 g / 32.06 g/mol = 0.149 moles

Moles of O in SO₃ = 4.77 g / 16.00 g/mol = 0.298 moles

For HNO₃:

Hydrogen (H) has a molar mass of 1.01 g/mol.

Nitrogen (N) has a molar mass of 14.01 g/mol.

Oxygen (O) has a molar mass of 16.00 g/mol.

Moles of H in HNO₃ = 3.48 g / 1.01 g/mol = 3.45 moles

Moles of N in HNO₃ = 3.48 g / 14.01 g/mol = 0.248 moles

Moles of O in HNO₃ = 3.48 g / 16.00 g/mol = 0.217 moles

The simplest whole-number ratio of the elements will be:

Carbon: 0.173 moles / 0.080 moles ≈ 2.16

Hydrogen: 1.27 moles / 0.080 moles ≈ 15.88

Sulfur: 0.149 moles / 0.080 moles ≈ 1.86

Nitrogen: 0.248 moles / 0.080 moles ≈ 3.10

Oxygen: 0.080 moles / 0.080 moles = 1

Therefore, the empirical formula is C₂H₁₆S₂N₃O.

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The amount of heat energy produced when 1 g of hydrogen and 2 g of nitrogen are reacted, is -6.61 KJ

First, we shall obtain the limiting reactant. Details below:

3H₂ + N₂ -> 2NH₃

From the balanced equation above,

28 g of N₂ reacted with 6 g of H₂

Therefore,

2 g of N₂ will react with = (2 × 6) / 28 = 0.43 g of H₂

We can see that only 0.43 g of H₂ is needed in the reaction.

Thus, the limiting reactant is N₂

Finally, we the amount of heat energy produced. Details below:

3H₂ + N₂ -> 2NH₃ ΔH = -92.6 KJ

From the balanced equation above,

When 28 grams of N₂ reacted, -92.6 KJ of heat energy were produced.

Therefore,

When 2 grams of N₂ will react to produce = (2 × -92.6) / 28 = -6.61 KJ

Thus the heat energy produced from the reaction is -6.61 KJ

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By using filtration, the sand and fine salt can be effectively separated based on their difference in particle size, providing a clean separation of the two components.

Filtration is a separation technique that takes advantage of the difference in particle size between sand and salt. It involves passing the mixture through a porous material, such as filter paper or a filter funnel, which allows the liquid (saltwater) and small salt particles to pass through while retaining the larger sand particles.

Here's how the filtration process can be carried out:

1. Set up a filter apparatus with a funnel and filter paper or a filter flask.

2. Place the mixture of sand and salt in a beaker or a flask.

3. Slowly pour the mixture into the filter paper or funnel, allowing the liquid (saltwater) to pass through while retaining the sand on the filter paper.

4. Once the liquid has passed through completely, the sand will be left behind on the filter paper or in the filter flask.

5. Carefully remove the sand from the filter paper or filter flask, and the saltwater solution can be collected separately.

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Answer:

\(K^+\\\\PO_4^{3-}\)

Explanation:

Hello!

In this case, since salts such as potassium phosphate are composed by a monoatomic cation (positive charge) and a polyatomic anion (negative), we infer that the ions present in a solution having this compound look like this:

\(K^+\\\\PO_4^{3-}\)

Whereas the first one stands for potassium ions and the second one the phosphate ions.

Best regards!

In a covalent bond, one line represents one pair of electrons being shared.

Covalent compounds are compounds formed as a result of sharing of electrons between the atoms that make up the compound.

In other words, electrons are shared among atoms that make up covalent compounds unlike in ionic compounds where some atoms donate electrons while some atoms accept electrons.

Thus, a line in the structure of covalent compounds represents a bond formed as a result of sharing a pair of electrons between two atoms.

For example, the line between C and H in C-H represents a bond formed between the two atoms as a result of sharing a pair of electrons between them.  Whereas, the line between Na and Cl atoms in Na-Cl represents a bond formed as a result of Na donating an electron to Cl.

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Answer:

B

Explanation:

Generally, soil changes easier temperature than water. And it's warmer already, based on the picture.

Answer:

Explanation:

A covalent bond is formed between two non-metals that have similar electronegativities. Neither atom is "strong" enough to attract electrons from the other

Answer:

A

Explanation:

An element is a substance, made up of atoms of the same substance and has independent existence. An element cannot be broken up by physical or chemical processes.

If we look at the images closely, image A represents a substance made up of the same kind of atoms. All the balls are exactly of the same colour and type, hence the answer.

The combined gas law equation is:

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

The volume of the gas at 30 °C is approximately 760.67 mL.

To determine the volume of the gas at 30 °C, we can use the combined gas law equation, which relates the initial and final conditions of temperature and volume for a gas.

The combined gas law equation is:

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

Where:

P1 and P2 are the initial and final pressures, respectively

V1 and V2 are the initial and final volumes, respectively

T1 and T2 are the initial and final temperatures in Kelvin, respectively

We need to convert the temperatures from Celsius to Kelvin by adding 273.15 to each value.

Given:

V1 = 550 mL

T1 = -55 °C = 218.15 K

T2 = 30 °C = 303.15 K

Assuming the pressure remains constant, we can rearrange the equation to solve for V2:

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

Since the pressure is not specified in the problem, we can assume it remains constant, allowing us to cancel out the pressure terms. Thus, the final equation becomes:

V2 = (V1 * T2) / T1

Plugging in the given values:

V2 = (550 mL * 303.15 K) / 218.15 K

Simplifying the calculation, we find:

V2 ≈ 760.67 mL

Therefore, the volume of the gas at 30 °C is approximately 760.67 mL.

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