in what kind of reaction do two or more substances combine

Explanation:

ionic compounds have high melting points

Answer:

Under the earth's surface, rocks melt, metamorphize, and crystalize.

Explanation:

Metamorphic and Igneous rocks are basically dependant on the heat/pressure of the environment under the surface :) Melting, metamorphosing and crystallization all occur under earth's surface.

The specific processes in the rock cycle that occur beneath the Earth surface are :

Under the Earth surface the specific rock cycle processes that leads to the formation of the different types of rocks includes;  Melting, metamorphization and rock crystallization.

Metamorphic rocks are formed from other rocks ( sedimentary and igneous rocks)  due to the change in temperature and this process is metamorphization. while igneous rocks are formed from molten rocks caused by the melting process. Sedimentary rocks are formed by the deposition of sediments from weathering of existing rocks this is the  crystallization process.

Hence the specific process in the rock cycle that occur beneath the Earth's surface are : Melting, metamorphosing and crystallization.

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The pressure of the gas inside the cylinder is 52.90 atm

Given is the number of moles of gas, the temperature and the volume of the gas and we need to find the pressure of the gas inside the cylinder, for this we can use the ideal gas law equation:

PV = nRT

Where:

P = Pressure of the gas (in units of pressure, such as atm)

V = Volume of the gas (in liters)

n = Number of moles of the gas

R = Ideal gas constant (0.0821 L·atm/(mol·K))

T = Temperature of the gas (in Kelvin)

First, let's convert the temperature from Celsius to Kelvin:

T = 25.0 °C + 273.15 = 298.15 K

Now we can substitute the values into the ideal gas law equation:

P × 12.5 L = 27.0 moles × 0.0821 L·atm/(mol·K) × 298.15 K

Simplifying the equation:

P × 12.5 L = 661.2587 L·atm

Dividing both sides by 12.5 L:

P = 661.2587 L·atm / 12.5 L

P ≈ 52.90 atm

Therefore, the pressure of the gas inside the cylinder is approximately 52.90 atm.

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We can use the ideal gas law equation to determine the pressure of a gas within a cylinder:

PV = nRT

Where:

P is the pressure of the gas (in units of pressure, such as atm)

V is the volume of the gas (in units of volume, such as liters)

n is the number of moles of the gas

R is the ideal gas constant (0.0821 L·atm/(mol·K))

T is the temperature of the gas (in units of temperature, such as Kelvin)

we need to convert the temperature from Celsius to Kelvin:

T(K) = T(°C) + 273.15

T(K) = 25.0 °C + 273.15

T(K) = 298.15 K

Now we can plug the data into the ideal gas law equation as follows:

P * 12.5 L = 27.0 moles * 0.0821 L·atm/(mol·K) * 298.15 K

Simplifying the equation:

P = (27.0 moles * 0.0821 L·atm/(mol·K) * 298.15 K) / 12.5 L

Calculating the pressure:

P ≈ 5.046 atm

As a result, the gas inside the cylinder is under a pressure of about 5.046 atm.

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Answer:

2Na + 2H2O → 2NaOH + H2

Explanation:

A balanced equation is an equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge are the same for both the reactants and the products.

Answer:

The synopsis and according to particular circumstances is summed up in the description section below.

Explanation:

Answer:

Her speed is 6.8m/s.

Explanation:

K.E= 1/2mv²

or, 2543.2= 1/2×110×v²

or, 2543.2 = 55v²

or, 2543.2/55 = v²

or, 46.24 = v²

or, 6.8² = v²

v = 6.8 m/s

answer

6.8

explanation

k.e=1/2v^2

2543.2=55v^2

46.24=v^2

6.8^2=v^2

v=6.8

Answer:

Cellular differentiation

Explanation:

Answer:

cellular differentiation

Explanation:

Answer:

Nucleus is the answer of your question

Answer:

nucleus is your awnser

Answer:

That's called an physical change which is an change in the state of matter

Explanation:

Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. Physical changes are used to separate mixtures into their component compounds, but can not usually be used to separate compounds into chemical elements or simpler compounds.

Answer:

specific heat, the quantity of heat required to raise the temperature of one gram of a substance by one Celsius degree.

Answer: 12 L fluorine gas at STP can be collected from the decomposition of 90.7 g of \(AuF_3\)

Explanation:

The balanced decomposition reaction is shown as

\(2AuF_3\rightarrow 2Au+3F_2\)

moles of \(AuF_3=\frac{\text {given mass}}{\text {Molar mass}}=\frac{90.7g}{254g/mol}=0.36moles\)

According to stoichiometry:

2 moles of \(AuF_3\) gives = 3 moles of flourine gas

Thus 0.36 moles of \(AuF_3\) gives = \(\frac{3}{2}\times 0.36=0.54moles\) of flourine gas

Using ideal gas equation :

\(PV=nRT\)

P = pressure of gas = 1 atm ( at STP)

V = Volume of gas = ?

n = moles of gas = 0.54

R = gas constant = 0.0821 L atm/Kmol

T = temperature = 273 K ( at STP)

Putting the values we get :

\(1atm\times V=0.54mol\times 0.0821Latm/Kmol\times 273K\)

\(V=12L\)

Thus 12 L fluorine gas at STP can be collected from the decomposition of 90.7 g of \(AuF_3\)

All are properties related to hydrogen bonding.

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Answer

Explanation: The word BOOK; is made up of 4 letters and each actually represents the symbol of an element. An element ...

Explanation:

Explanation:

Hey there!!

The reason is they are noble gases, and already has 8 electrons due to which they donot tend to react with other gases. Elements reacts for having stable electronic configuration but the elements like Neon and Argon has already 8 electrons so, they don't form ions.

Hope it helps...

The given reaction is a dehydrohalogenation reaction. The following reaction depicts the dehydrohalogenation of 3-bromopentane:Thus, 3-bromopentane gives the alkene shown as the major product of the reaction.

Dehydrohalogenation is an elimination reaction, which involves the removal of a proton from the β-carbon, and the halide ion from the α-carbon of the alkyl halide. The removal of the proton and halide ion from the adjacent carbons forms a pi bond.  This type of reaction gives an alkene as the final product.

Therefore, the alkyl bromide which can give the alkene shown as the major product of the following reaction is the one which possesses adjacent beta-hydrogen atoms.

The bromoalkane shown in the reaction below has three beta-hydrogens so that 3- bromopentane will give 2-pentene as the major product. The following reaction depicts the dehydrohalogenation of 3-bromopentane:Thus, 3-bromopentane gives the alkene shown as the major product of the reaction.

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The question is incomplete, the complete question is;

Balance the following equations by inserting the proper coefficients.

CH4 + O2 ---------------> CO2 +H2O

CaCl2 + AgNO3 ----->Ca(NO3)2 +AgCl

C2H6O + O2----------->CO2 +H2O

Answer:

CH4 + 2O2 ---------------> CO2 +2H2O

2AgNO3 + CaCl2 → Ca(NO3)2 + 2AgCl

C2H6O + 3O2 → 2CO2 + 3H2O

Explanation:

You see, when we set out to balance chemical reaction equations, ultimately, our aim is to ensure that the number of atoms of each element on the reactant side is exactly the same as the number of atoms of the same element on the products side.

We do this by counting the number of atoms required to have a balanced reaction equation and then adding coefficients in order to have a balanced chemical reaction equation.

This is what have been done in balancing the three reaction equations shown in the answer section.

Formal charge = valence electrons - Number of non bonding electrons - number of shared electrons ÷ 2

A formal charge (F.C.) is the charge assigned to an atom in a molecule in the covalent view of bonding, assuming that electrons in all chemical bonds are shared equally between the atoms, regardless of their relative electronegativity.

The formal charge is generally the difference between an atom's number of valence electrons in its neutral free state and the number allocated to that atom in a Lewis dot structure.

When choosing the optimum Lewis structure or also called as the  predominant resonance structure  for a molecule, it is important to keep the formal charge on each of the atoms as low as feasible.

The following equation can be used to compute the formal charge of an atom in a molecule:

Formal charge = valence electrons - Number of non bonding electrons - number of shared electrons ÷ 2

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If 0.135 moles are added to the balloon, its new volume would be 2.997 L.

The optimal petrol law can be used to resolve this issue:

PV = nRT

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

We may link the original and final volumes using the equation below, assuming constants for pressure and temperature:

(V1 / n1) = (V2 / n2)

If V1 is the starting volume, n1 is the starting mole count, V2 is the ending volume, and n2 is the ending mole count.

We may first determine the initial molar volume of the gas using the provided values:

V1/n1=7.28 L/0.38 mol = 22.195 L/mol

The final volume can then be determined using the molar volume:

0.135 mol x 22.195 L/mol = 2.997 L is what V2 = n2 x (V1 / n1) equals.

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Answer:

Dalton's law of partial pressure

Explanation:

In Dalton's law of partial pressure is states that the total pressure of a gas mixture is equal to the sum of the partial pressures of the component gasses.

This is the equation: \(P_{total} =P_{gas 1} +P_{gas2} + P_{gas3}\).. so on and so forth.

basically what Dalton is saying partial pressures are just fractions of the total pressure, think of it as if you cut 12 slices of pizza and 12 people grabbed a slice of the pizza. Each person has 1/12 of that pizza, 1/12 x 12 = 1.  

let's say there is a container filled with nitrogen gas (N) , hydrogen gas (H), and ammonia gas (NH₃).

N= 40 atm

H=20 atm

NH₃= 10 atm

you would plug this information into this equation: \(P_{total} =P_{gas 1} +P_{gas2} + P_{gas3}\)

\(P_{N} + P_{H} + P_{NH{3}} = P_{total}\)

 \(P_{40} + P_{20} + P_{10} = 70\)  

N is 40/70 of the gaseous mixture.

H is 20/70 of the gaseous mixture.

NH₃ is 10/70 of the gaseous mixture.

if you add these fractions up:

\(\frac{40}{70} +\frac{20}{70} +\frac{10}{70} =\frac{1}{1} =1\)

I really hope this helps a little!

Answer:

Polar easterlies are dry, cold prevailing winds that blow from the east. They emanate from the polar highs, areas of high pressure around the North and South Poles. Polar easterlies flow to low-pressure areas in sub-polar regions. Westerlies. Westerlies are prevailing winds that blow from the west at midlatitudes.

Explanation:

I hope this helps

The balanced chemical equation of combustion of propanol is 2 C₃H₇OH +9 O₂\(\rightarrow\) 6 CO₂ +8 H₂O.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.

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Answer:

The periodic table, also known as the periodic table of chemical elements, is a tabular display of the chemical elements. It is widely used in chemistry, physics, and other sciences, and is generally seen as an icon of chemistry.

Explanation:

The periodic table is a tabular arrangement of chemical elements that classifies elements according to repeating qualities and is structured by increasing atomic number. Metals are located on the left side of the table, whereas nonmetals are located on the right. The columns are referred to as groupings.

in pic

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