what is the product(s) in the reaction below
2Na(s) + 2H2O(l) → 2NaOH(aq) + H2(g)

The number of atoms in 3 moles K of the particle is 1.806 x 10²⁴ atoms.

The value of one mole of an atom is equal to exactly 12 grams of pure carbon-12.

12.00 g (C-12 ) = 1 mol C-12 atoms = 6.02 × 10²³ atoms .

The number of particles in 1 mole is called Avogadro's Number (6.0221421 x 10²³).

The number of atoms in 3 moles K of the particle is calculated as follows;

= 3 moles  x   6.02 × 10²³ atoms / mol

= 1.806 x 10²⁴ atoms

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The mass of \(Ag_2CrO_4\) that would be formed will be 2.69 grams.

Mole of 2.5 grams silver nitrate = 2.5/143.32 = 0.017 mol

Mole of 18.0 mL, 0.450 M sodium chromate = 18/1000 x 0.450 = 0.0081

From the balanced equation of the reaction, the mole ratio of silver nitrate to sodium chromate is 2:1. In other words, the sodium chromate is a bit limiting.

The mole ratio of sodium chromate and  \(Ag_2CrO_4\) is 1:1. Hence, the equivalent mole of \(Ag_2CrO_4\) formed would also be 0.0081 mol.

Mass of 0.0081 mol \(Ag_2CrO_4\) = 0.0081 x 331.73

                                                 = 2.69 grams

In other words, the mass of \(Ag_2CrO_4\) formed from the reaction would be 2.68 grams.

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Answer:

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Explanation:

Answer:

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Answer:

Reactive.

Explanation:

am sure bro..…….

Because it is too reactive, sodium metal cannot be used to make sodium chloride. Since sodium is a highly reactive alkali metal, it easily interacts with other substances to form new ones.

Sodium metal interacts fast with water to produce sodium hydroxide and hydrogen gas. The metal may catch fire and burn as a result of this reaction since it is so exothermic, or heat-producing.

Sodium metal interacts fast with acids like hydrochloric acid to produce sodium chloride and hydrogen gas. However, handling this reaction can be risky due to its high exothermic nature.

There is a significant safety risk since the heat from the reaction might cause the acid to boil and spray.Boil and spatter poses a major risk to people's safety. In comparison, using sodium hydroxide to create sodium chloride is significantly safer.

When sodium hydroxide and an acid are combined, the reaction is significantly slower and less exothermic. This response is considerably simpler to manage and does not provide a significant risk to safety. Sodium hydroxide is also considerably simpler to get than sodium metal. As a result, it is the technique of choice for producing sodium chloride.

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Answer:

They are just two....Ca and OH

Olive oil separates from the water-vinegar in a salad dressing and is visible as a layer because the olive oil will be on the top because it has lesser density.

The density of a substance indicates how dense it is in a particular area. Mass per unit volume is the definition of a material's density. In essence, density is a measurement of how closely stuff is packed. It is a special physical characteristic of a certain thing.

On top of the liquid with higher density, the liquid with lower density will float. Compared to water, oil has a lower density. Hence, it floats on top of it. Oil is a non-polar liquid, but water is polar, hence there will be no attraction between their molecules.

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the molar mass of the gas comes out to be 137.28 g/mol.

We can apply the ideal gas law equation to determine the gas' molar mass:

PV = nRT

where P is for pressure.

V = volume and n = moles.

Ideal gas constant: R

Temperature is T.

Let's first translate the provided values into SI units:

Pressure (P) is defined as 720 mmHg, 720 torr, or 720/760 atm.

Volume (V) = 0.119 L/119 mL

85 degrees Celsius is equal to 85 + 273.15, or 358.15 Kelvin.

The ideal gas law equation is then rearranged to account for the number of moles (n):

n = PV / RT

n = (720/760) atm * 0.119 L / (0.0821 Latm/molK) * 358.15 K can be substituted for the original values.

Condensing: n 0.00512 mol

Now, we may use the following formula to determine the gas's molar mass (M):

M is equal to mass / moles.

Changing the numbers to: M = 0.545 g / 0.00512 mol

Putting it simply: M = 106.64 g/mol

As a result, the gas's molar mass is roughly 106.64 g/mol.

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Answer:

The answer is

A- H

B- C

Explanation:

Answer:

The answer is

A- H

B- C

Explanation:

Answer:

We assume you are converting between moles Gold and gram. You can view more details on each measurement unit: molecular weight of Gold orgrams The molecular formula for Gold is Au. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Gold, or 196.96655grams.

Magnesium is the limiting reagent in the chemical reaction that was used to determine the molar volume of H₂ gas.

The limiting reagent is the reactant that is completely used up in a reaction, and thus determines when the reaction stops.

Metals that are above hydrogen in the activity series will displace from an acid and produce hydrogen gas. Magnesium is an example of a metal that is more active than hydrogen in the activity series.

The reaction is,

Mg + HCl ---> MgCl₂ + H₂

The experiment is designed such that the magnesium metal is the limiting reagent.

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Answer:

Hope this helps you

Answer:

potassium is likely to be harder

Explanation:

because whenan atom loss electron they can form particle ion acquare stable a arrangement that loos electron can transfer to another which that also to acquaire stable

Answer:

carbon is the element left on the spoon after the sugar is heated.

Answer:

47

Explanation:

Silver (Ag), chemical element, a white lustrous metal valued for its decorative beauty and electrical conductivity. Silver is located in Group 11 (Ib) and Period 5 of the periodic table

The atomic number of silver is 47.

That also means that silver has 47 electrons and 47 protons.

The atomic mass of silver is 108u.

107 - 47 = 60

Silver has 60 neutrons.

According to the complementary base pairing in DNA, the  nitrogen base sequence  which is the partner of T-C-A-G-C-A is  A-G-T-C-G-T.

DNA  is a hereditary material which is present in human beings as well as all other living organisms.  Every cell which is present in an organism's body has DNA  which is the same. Most of the DNA is situated in the cell's nucleus  and small amount of it can be found in the cell's mitochondria as well.

Information which is stored in DNA is stored as codes made up of four chemical bases namely, adenine, thymine , cytosine and guanine.Human DNA consists of 3 billion bases .The order of the bases determines information which is required for building and maintaining an organism.

DNA bases are capable of pairing up with each other. Adenine pairs with thymine and guanine pairs up with cytosine .Each base is also attached to a sugar molecule  and a phosphate group. A base, phosphate  sugar are together called as nucleotides.

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Answer:The answer is C) The total mass of C and D only.

In order for conduction to occur within a single substance, parts of the substance must have high thermal conductivity.

Conduction is a process of heat transfer where heat is transferred from hotter particles to colder ones. Conduction can occur within a single substance, but parts of the substance must have high thermal conductivity. This means that the molecules in these parts of the substance are closely packed together and can easily transfer heat energy to one another. The rate of heat conduction within a substance depends on several factors, including the temperature difference between the hotter and colder parts of the substance, the thickness of the substance, and the thermal conductivity of the substance itself.

The higher the thermal conductivity of the substance, the faster heat will be transferred from one part of the substance to another. Therefore, in order for conduction to occur within a single substance, it is necessary that parts of the substance have high thermal conductivity. This ensures that heat can be transferred efficiently from one part of the substance to another, resulting in an equalization of temperature throughout the substance.

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Answer:

165.3 cm^3

Explanation: hope this is correct!!

P1 * V1 / T1 = P2 * V2 / T2

P1 = 84.6 kPa

V1 = 215 cm³

T1 = 23.5°C = 23.5 + 273 K = 296.5 K

At STP:

P2 = 101.3 kPa

V2 = ?

T2 = 273 K

Answer:

I believe that would be a liquid.

Explanation:

The activation barrier for the reaction in kJ/mol is ≈ 78.

The activation barrier for the reaction in kJ/mol can be calculated by using the Arrhenius equation.

The Arrhenius equation is represented by the following expression:

\(k = A^(^-^E^a^/^R^T^)\)

Where k = rate constant

A = frequency factor (pre-exponential factor)

Ea = activation energy

R = gas constant

T = temperature

The activation barrier for the reaction in kJ/mol is given by the following expression:

Ea = (R)(ln(k2/k1))/(1/T1 - 1/T2)

Where k1 and k2 are the rate constants at temperatures T1 and T2, respectively.

R is the gas constant.

Here, k1 = 0.0117/s, k2 = 0.689/s, T1 = 400.0 K, T2 = 450.0 K and R = 8.314 J/K mol

Converting the units of R to kJ/K mol,

R = 8.314/1000 = 0.008314 kJ/K mol

Therefore, the activation barrier for the reaction in kJ/mol is given by the expression:  

Ea = (0.008314 kJ/K mol) × ln (0.689/0.0117) / ((1/400.0 K) - (1/450.0 K)) ≈ 78 kJ/mol

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More energy is required to break the bonds in octane, and more energy is released when the products are formed.

Burning one mole of hydrogen gas (H2) and one mole of octane (C8H18) yields different amounts of energy and products. The balanced chemical equations for the combustion of hydrogen and octane are:

Hydrogen: 2H2 + O2 -> 2H2O + energy (where energy is released in the form of heat)

Octane: C8H18 + 12.5O2 -> 8CO2 + 9H2O + energy (where energy is also released in the form of heat)

When one mole of hydrogen is burned, it releases 241.8 kJ of heat energy, whereas when one mole of octane is burned, it releases 5471 kJ of heat energy.

The combustion of octane produces more energy because it contains more carbon atoms than hydrogen atoms, and carbon-carbon bonds are stronger than carbon-hydrogen bonds.

As a result, more energy is required to break the bonds in octane, and more energy is released when the products are formed.

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Answer:

Compound X is named propene.

i. What happens when hydrogen bromide is added to the compound X?

When hydrogen bromide is added to an alkene, it will add across the double bond to form a new sigma bond. In the case of compound X, this would produce 2-bromopropane.

Reaction:

C3H6 + HBr → C3H7Br

ii. How can you prepare compound X from 1-chloropropane?

Compound X can be prepared from 1-chloropropane by reacting it with sodium hydroxide in water. The hydroxide ion will abstract a proton from the chlorine atom, leaving behind a negative charge on the carbon atom. This negative charge can then be attacked by a water molecule to form an alcohol.

Reaction:

CH3CH2CH2Cl + NaOH → CH3CH2CH2OH

iii. How can you prove chemically the compound X is unsaturated?

One way to prove that compound X is unsaturated is to react with bromine water. Bromine water is a solution of bromine in water. When bromine water is added to an unsaturated compound, the bromine will be added across the double bond to form a precipitate of bromine. This is a positive test for an unsaturated compound.

Reaction:

C3H6 + Br2 → C3H6Br2

iv. Convert methane into ethane.

Methane can be converted into ethane by reacting it with hydrogen gas in the presence of a catalyst, such as nickel. This reaction is called the Fischer-Tropsch process.

Reaction:

CH4 + H2 → C2H6

v. How can you prepare ethane from Kolbe's electrolysis?

Ethane can be prepared from Kolbe's electrolysis by passing an electric current through a solution of sodium acetate. The electric current will cause the acetate ions to decompose into carbon and hydrogen gas. The carbon and hydrogen gas will then react to form ethane.

Reaction:

2CH3COO- → C2H6 + 2CO2

I hope this helps! Let me know if you have any other questions.

Copper used in electric wires comes in two flavors (isotopes): Cu-63 and Cu-65. Cu-63 has an atomic mass of 62.9298 amu and an abundance of 69.09%. The other isotope, Cu-65, has an abundance of 30.91%. The average atomic mass between these two isotopes is 63.546 amu is 64.93 amu.

Average atomic mass = sum of masses of isotopes multiply by  % of abundance

Cu - 63, mass =  62.9298 amu,   % abundance = 69.09 %

Cu - 65, mass m2 = ?   % abundance = 30.91 %

average atomic mass = 63.546 amu

average atomic mass = ( 62.9298 × 0.6909 ) + ( m2 × 0.3091 )

63.546 =  ( 62.9298 × 0.6909 ) + ( m2 × 0.3091 )

m2 = 64.93 amu

Thus, Copper used in electric wires comes in two flavors (isotopes): Cu-63 and Cu-65. Cu-63 has an atomic mass of 62.9298 amu and an abundance of 69.09%. The other isotope, Cu-65, has an abundance of 30.91%. The average atomic mass between these two isotopes is 63.546 amu is 64.93 amu.

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At STP, a 22.4 L container contains 1 mole of gas according to the ideal gas law.

At standard temperature and pressure (STP), the relationship between the volume of a gas and the number of moles it contains can be expressed as:

V = nRT/P

Where:

V = volume of gas (in liters)

n = number of moles of gas

R = ideal gas constant (0.08206 L·atm/mol·K)

T = temperature (in Kelvin, which is 273.15 + degrees Celsius)

P = pressure (in atmospheres)

At STP, T = 273.15 K and P = 1 atm. Substituting these values into the equation gives:

22.4 L = n (0.08206 L·atm/mol·K) (273.15 K) / 1 atm

Solving for n gives:

n = 1 mole

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Cofactor most commonly known for its ability to bind to oxygen, iron also plays the important role of acting as a to many enzymes in numerous oxidation-reduction reactions.

Chemical processes occur when atoms form or break chemical bonds. The molecules that start a chemical are known as reactants, and the compounds which are generated as the result of reaction are known as products.

A physical response is a reaction that modifies the physical characteristics of an item or material Physical characteristics encompass items like mass, volume, etc density.

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