Eva pumps up her bicycle tire until it has a gauge pressure of 413 kilopascals. If the surrounding air is at standard pressure, what is the absolute pressure in the bicycle tire?
A.33.9 kPa
B.49.7 kPa
C.312 kPa
D.514 kPa

Answer:

First one is : London dispersion

Second one is: London dispersion

Third One is : dipole-dipole

Fourth one is : induced dipole

Explanation:

Answer:

the answer is written in the picture.

Explanation:

Answer:

2H2 + O2 = 2H2O

Explanation:

To balance the equation, you must place coefficients behind the element and have equal amounts of atoms on both sides. In this case, to balance the equation, it would read:

2H2 + O2 = 2H2O

Answer:

In a chemical reaction, the atoms and molecules that interact with each other are called reactants. No new atoms are created, and no atoms are destroyed. In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

During a chemical reaction, various changes take place at the molecular level as substance  are transformed into new substances (products).

Chemical reactions involve the breaking and formation of chemical bonds between atoms and molecules. Here's what occurs during a chemical reaction:

Breaking and Formation of Bonds, the bonds between atoms in the reactants are broken. These bonds are typically covalent or ionic bonds. This requires an input of energy called the activation energy. Bonds are broken as reactant molecules collide and interact.

Once the bonds are broken, the atoms are rearranged to form new molecules or compounds. The atoms do not disappear; they are rearranged into new combinations.

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Answer:

407 KJ

Explanation:

Q = m x Hv / M(H2O)

Q = 180 x 40,67/ 18

Q = 407 kJ

-406.7 kJ is the change in enthalpy when 180 g of water vapor condenses at 100°C.

Enthalpy is the sum of the internal energy. and pressure times volume. We cannot measure the enthalpy of a system, but we can look at changes in enthalpy.

[tex]H_2O (l)[/tex] → [tex]H_2O (g)[/tex], Δ[tex]H_V[/tex] = - 40.67kJ/mol

Mole of water =[tex]\frac{180g}{18g/mol}[/tex]

Mole of water = 10g

Heat of condensation of 1 mol of water = Δ[tex]H_V[/tex]

= - 40.67kJ/mol

Heat change when 180 g of water condenses at 100° C:

= - 40.67kJ/mol X 10g

= - 406.7 kJ

Hence, -406.7 kJ is the change in enthalpy when 180 g of water vapor condenses at 100°C.

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To find the amount of CO₂ produced from 12.0 g of CH₄ and 133 g of O₂, we write the balanced chemical equation for the combustion of methane, find the limiting reactant, which is CH₄, and then use stoichiometry to calculate that 32.95 grams of CO₂ will be produced.

The question involves a stoichiometry calculation in Chemistry where we need to determine how many grams of CO₂ will be produced from a given amount of CH₄ and O₂ based on a chemical reaction.

The first step is to write the balanced chemical equation for the combustion of methane:
CH₄(g) + 2 O₂(g) ⇒ CO₂(g) + 2 H₂O(l)

Next, we calculate the moles of CH4 using its molar mass:
(12.0 g CH₄) / (16.04 g/mol) = 0.7484 mol CH₄

Then, we need to check if oxygen is in excess by calculating the moles of O₂:
(133 g O₂) / (32.00 g/mol) = 4.156 mol O₂

Now, since the reaction requires 2 moles of O₂ for every mole of CH₄, we have more than enough O₂ to react with CH₄, which means CH₄ is the limiting reactant.

According to the balanced equation, 1 mole of CH₄ produces 1 mole of CO₂. Therefore, 0.7484 mol of CH₄ will produce 0.7484 mol of CO₂.

Finally, we calculate the mass of CO₂ produced:
(0.7484 mol CO₂) x (44.01 g/mol) = 32.95 g CO₂

Thus, 32.95 grams of CO₂ will be produced from the reaction between 12.0 g of CH₄ and 133 g of O₂.

Answer:

It can be separated by physical methods.

2) It can appear different from different sources.

3) It cannot be described by a chemical symbol or formula.

Explanation:

Answer:

1) It can be separated by physical methods.

2) It can appear different from different sources.

3) It cannot be described by a chemical symbol or formula.

Mixture is composed of at least two substances.

Answer : The number of moles of oxygen formed are, 0.255 moles.

Explanation :

The given chemical reaction is:

[tex]H_2O_2\rightarrow H_2O+O_2[/tex]

This reaction is an unbalanced chemical reaction because in this reaction number of oxygen atoms are not balanced.

In order to balance the chemical equation, the coefficient '2' put before the [tex]H_2O_2[/tex] and [tex]H_2O[/tex] then we get the balanced chemical equation.

The balanced chemical reaction will be:

[tex]2H_2O_2\rightarrow 2H_2O+O_2[/tex]

Now we have to calculate the number of moles of oxygen formed.

From the balanced chemical reaction we conclude that,

As, 2 moles of hydrogen peroxide react to give 1 mole of oxygen

So, 0.51 moles of hydrogen peroxide react to give [tex]\frac{0.51}{2}=0.255[/tex] mole of oxygen

Therefore, the number of moles of oxygen formed are, 0.255 moles.

Answer:

Sodium Sulfate: Dissociate

Ammonium Phosphate: Dissociate

Sulfuric Acid: Ionize

Potassium Iodide: Dissociate

Perchloric Acid: Ionize

Cesium Chloride: Dissociate

Nitric Acid: Ionize

Sodium Sulfate: Dissociate

Ammonium Phosphate: Dissociate

Sulfuric Acid: Ionize

Potassium Iodide: Dissociate

Perchloric Acid: Ionize

Cesium Chloride: Dissociate

Nitric Acid: Ionize

Ionization is described because of the method wherein new charged debris is produced. Dissociation is described as the technique wherein a charged particle is separated from the prevailing compound. that is an irreversible system. this is a reversible process.

Dissolution is any procedure that consequences in stages (whether it's liquid-liquid for acetic acid or stable-liquid for sodium chloride) creating an unmarried segment. Ionic compounds dissociate to try this, however many compounds (glucose, acetone, and many others.) can have interaction sufficient with water enough to dissolve without ionizing.

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Answer:

When energy is transformed from one from to another, energy is transferred form one form to another.

Explanation:

While the transformation of energy occur, total energy remains constant.

This is the LAW OF CONSERVATION OF ENERGY.

Answer:0.0014458

That’s the right one

Answer:

0.0014458

Explanation:

edg

A process that involve rearrangement of the molecules or ionic structure of substance as distinct from change in the physical form or a nuclear reactions

I hope you are satisfied with this answer

Final answer:

A chemical reaction is a transformation where reactants are turned into products, involving changes at the atomic level including breaking and forming of bonds. Chemical equations represent these reactions, which must be balanced to reflect the conservation of matter.

Explanation:

A chemical reaction is a process that fundamentally changes one or more substances, known as reactants, into one or more different substances, known as products. These transformations involve a combination, separation, or rearrangement of atoms. During chemical reactions, bonds between atoms in the reactants are broken and new bonds are formed to create the products.

Chemical reactions are depicted using chemical equations, which have the reactants on the left side, an arrow representing “yields”, and the products on the right side. For a chemical equation to be useful or valid, it must be balanced, meaning it respects the law of conservation of mass with the same number and types of atoms on both sides. Examples of chemical reactions include the rusting of iron, the combustion of gasoline in a car's engine, and the metabolic processes within a living cell. In each case, the initial substances or reactants are transformed into different substances with new properties.

Answer:

vector

Explanation:

a vector is an organism that transmits a pathogen from organism to organism.

Answer:

The answer to your question is 2.52 moles

Explanation:

Data

Volume = 60.5 l

Temperature = 20°C

Pressure = 1 atm

Constant of ideal gases = R = 0.082 atm l/mol°K

Formula

PV = nRT

-Solve for n

   n = PV / RT

-Convert temperature to °K

Temperature = 20 + 273

                      = 293°K

-Substitution

   n = (1 x 60.5) / (0.082 x 293)

-Simplification

    n = 60.5 / 24.026

-Result

    n = 2.52 moles

Answer:

Molecular Weight of gas = 44.418 grams/mole

Explanation:

PV = nRT = (mass/f.wt.)RT => f.wt. = mass·R·T/P·V

mass = 0.435g

R = 0.08206·L·atm/mol·K

T = 100°C = 372K

P = (765/760)Atm = 1.01Atm

V = 297ml = 0.297L

f.wt. = (0.435g)(0.08206L·Atm/mol·K)(372K)/(1.01Atm)(0.297L) = 44.418 grams/mole

Answer:

5.7

Explanation:

The amplitude of a sound wave determines its loudness. A higher amplitude results in a louder sound, and a lower amplitude results in a softer sound.

In Physics, the amplitude of a sound wave determines its loudness or volume. A larger amplitude means a louder sound, while a smaller amplitude means a softer sound.

This spread of energy follows the inverse square law, meaning that doubling the distance from the sound source reduces its amplitude to one-quarter of its original value. This causes the sound to become softer the further it travels.

Answer:

8.11g

Explanation:

Given parameters:

Molarity of aqueous solution = 0.3M

total volume  = 0.15L

Molecular weight of glucose  = 180.6g/mol

Unknown:

Mass of glucose needed in the solution = ?

Solution:

To solve this problem, we need to understand molarity.

Molarity is the number of moles of solute in a given volume of solution. In this problem, the solute here is the glucose and the solvent is water.

      Molarity  = [tex]\frac{number of moles of solute}{volume of solution}[/tex]

A solution is made up of solute and solvent.

   now, let us solve for the number of moles of the solute which is glucose;

   Number of moles of glucose  = molarity x volume of solution;

                                                      = 0.3 x 0.15

                                                      = 0.045mole

Now to find the mass of glucose;

        mass of glucose  = number of moles x molar mass

             input the parameters;

         Mass of glucose  = 0.045  x 180.16 = 8.11g

To determine the amount of glucose needed for the solution, we calculate the number of moles of glucose in the solution and then use the molecular weight of glucose to convert this to grams. Thus, 8.107 g of glucose is necessary for the solution.

To figure out how much glucose we need, we'll have to use molarity, which measures the concentration of a solution. The molarity is defined as the number of moles of solute (in this case, glucose) per liter of solution.

Therefore, we first find the number of moles in the 0.150 L solution by multiplying 0.300 M by 0.150 L, which gives us 0.045 moles of glucose. Then, we multiply this by the molecular weight of glucose, which is 180.16 g/mol. Therefore, to create the solution, we'd need 8.107 g of glucose.

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Answer:

A and B

Explanation:

Answer: A and B.

Explanation:

I took the enginuidy

Answer : The specific heat of copper is, [tex]0.384J/g^oC[/tex]

Explanation :

Formula used :

[tex]q=m\times c\times \Delta T[/tex]

where,

q = heat absorb = 15200 J

m = mass of sample = 105 g

c = specific heat capacity of copper = ?

[tex]\Delta T[/tex] = change in temperature = [tex]377^oC[/tex]

Now put all the given values in the above formula, we get:

[tex]15200J=105g\times c\times 377^oC[/tex]

[tex]c=0.384J/g^oC[/tex]

Therefore, the specific heat of copper is, [tex]0.384J/g^oC[/tex]

Answer:

taste buds

Explanation:

Answer:

Gold

Explanation:

I think its gold since its a pure element, hope it helped

Answer:

Option A.12.8 atm

Explanation:

Step 1:

Data obtained from the question.

Initial Volume (V1) = 8 L

Initial pressure (P1) = 0.8 atm

Final volume (V2) = 0.5 L

Final pressure (P2) =?

Step 2:

Determination of the new pressure. The new pressure of the balloon can simply be obtained by applying the Boyle's law equation as follow:

P1V1 = P2V2

0.8 x 8 = P2 x 0.5

Divide both side by 0.5

P2 = (0.8 x 8) / 0.5

P2 = 12.8 atm

Therefore, the new pressure of the balloon is 12.8 atm

Answer:

Heat

Explanation:

Friction can help convert heat into kinetic energy and kinetic energy into heat. Friction can be thought of as particles from different objects hitting each other. Collisions transfer energy converting large scale movement (kinetic energy) into small scale movement (heat).

Answer:

97.561 g/mol

Explanation:

The molar mass of Cu(OH)₂ is 97.57 g/mol. This is calculated by adding the atomic masses of copper, oxygen, and hydrogen in the compound. Each element's atomic mass is multiplied by the number of its atoms in the formula.

To find the molar mass of Cu(OH)₂, you need to add up the atomic masses of all the atoms in the compound:

Copper (Cu): 1 atom × 63.55 g/mol = 63.55 g/mol  

Oxygen (O): 2 atoms × 16.00 g/mol = 32.00 g/mol

Hydrogen (H): 2 atoms × 1.01 g/mol = 2.02 g/mol

Adding these together gives the total molar mass of Cu(OH)₂:

Cu(OH)₂ molar mass = 63.55 g/mol + 32.00 g/mol + 2.02 g/mol

= 97.57 g/mol

Thus, the molar mass of Cu(OH)₂ is 97.57 g/mol.

A base is weak when only a little of it dissolved in Water.

It images help u...

Answer:

A) base is weak when it forms few ions in water.

Explanation:

I just took the final

Answer:

look at the file :)

Explanation:

According to the stoichiometry of the balanced chemical equation of combustion of butane 1.313 liters  of oxygen gas is needed to completely combust 0.202 L of butane gas.

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.

0.202 liters of butane requires 13/2 of oxygen gas which is 0.202×13/2=1.313 liters.

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Answer:

bite where there is less sauce.

Explanation:

i just ate a pizza and it worked

Answer:

take a bite near crust

Explanation:

because the sauce is still hot so u will get burned