38 grams of butane (C4H10) burns completely in air (+O2) to form water and carbon dioxide. How many liters of carbon dioxide will be formed?

Answer:

C

Explanation:

This is a chemical reaction, because only the electrons were rearranged

Answer:

K.E. = 1/2 m v2

Explanation:

kinetic energy = half mass × volume²

Answer:

the answer is inbreeding

Explanation:

Answer:

COOH is the carboxylic acid.

The oxidation number of vanadium in different molecule

VO2 + (light yellow) = V -2 x 2 = +1  so, V= +5

V2+ (violet) = +2  so, V= +2

VO2+ (blue) = V-2 = 2+ so, V= +4

V3+ (green) = 3+ so, V= 3+

The total number of electrons that an atom acquires or loses to establish a chemical bond with another atom is known as the oxidation number, also known as the oxidation state. Among them is vanadium. It can be in the +2, +3, +4, and +5 oxidation states. These states are purple (II), green (III), blue (IV), and yellow (IV), each of which has a different colour (V).

Hence, vanadium has different oxidation state.

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The signs of ΔH and ΔS are related to the sign of ΔG, and an understanding of the sign of ΔG can provide information about the nature of the reaction and the effect of temperature on the thermodynamic parameters.

However, in general, the sign of ΔG (Gibbs free energy change) can provide information about the signs of ΔH and ΔS. The relationship between these three thermodynamic parameters is given by the following equation:

ΔG = ΔH - TΔS

where T is the temperature in Kelvin.

If ΔG is negative, then the reaction is spontaneous and the forward reaction is favored. This implies that the products have a lower free energy than the reactants. In this case, if the temperature is increased, the value of TΔS will become more positive, which means that the value of ΔH must become more negative in order for ΔG to remain negative.

This suggests that the reaction is exothermic (ΔH is negative) and that the entropy change is negative (ΔS is negative).

If ΔG is positive, then the reverse reaction is favored and the products have a higher free energy than the reactants. In this case, if the temperature is increased, the value of TΔS will become more negative, which means that the value of ΔH must become more positive in order for ΔG to remain positive. This suggests that the reaction is endothermic (ΔH is positive) and that the entropy change is positive (ΔS is positive).

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Answer:

A conditioned stimulus is a stimulus that can eventually trigger a conditioned response. In the described experiment, the conditioned stimulus was the ringing of the bell, and the conditioned response was salivation. It is important to note that the neutral stimulus becomes the conditioned stimulus

Explanation:

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CH3 is the empirical formula of a compound that has a carbon to hydrogen ratio 2-6.

What is empirical formula?

The empirical formula of a chemical compound is the simplest and most basic ratio of the constituent elements present in it. It is written as the smallest whole-number ratio of the constituent elements, and does not indicate the amount or concentration of each element.

The empirical formula of a compound is the simplest whole number ratio of atoms in a molecule. In this case, the given carbon to hydrogen ratio of the compound is 2:6, which can be simplified to 1:3. This means that for every one carbon atom, there are three hydrogen atoms in the compound.

6H / 2C × 1/2 / 1/2 → 3 H / 1C

Therefore, the empirical formula of this compound is CH3.

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Answer:

1.44 L

Explanation:

If the temp does not change

P1V1 = P2V2

1 * 3.6   = 2.5 * V2

V2 = 1.44 L

Answer:

ionic

Explanation:

The enzyme urease increases the velocity of the reaction by a factor of 2.7 x 10^34.

To find this answer, we need to use the Arrhenius equation:

k = A * e^(-Ea/RT),

where k is the rate constant, A is the pre-exponential factor, Ea is the activation energy, R is the gas constant (8.314 J/mol*K), and T is the temperature in Kelvin (294 K for 21°C).

First, we can calculate the rate constant for the uncatalyzed reaction:
\(k1 = A * e^{-125000/8.314*294} = A * e^{-51.1} = A * 2.8 x 10^{-23}\\\)

Next, we can calculate the rate constant for the catalyzed reaction:
\(k2 = A * e^{-46000/8.314*294} = A * e^{-18.8} = A * 7.6 x 10^{-9}\\\)

Now, we can find the factor by which the rate constant (and therefore the velocity of the reaction) is increased:
\(k2/k1 = (A * 7.6 * 10^{-9})/(A * 2.8 * 10^{-23}) = 2.7 * 10^{34}\)

Therefore, the enzyme urease increases the velocity by a factor of 2.7 x 10^34.

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MgO > CaO > NaF > KCl are the following compounds with decreasing order of lattice energy.

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Any orderly configuration of points and objects over a region or in space, such as the geometric configuration of the atoms within a crystal. Fissionable material is arranged geometrically in a nuclear reactor and is also referred to as a "space lattice."

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Wavelength (L) is calculated using: L = gT²/2π, here g=9.8 m/s2 and T is wave period in seconds.

Wavelength of a wave describes how long the wave is and the distance from the "crest" (top) of one wave to the crest of next wave is called wavelength. We can also measure from the "trough" (bottom) of one wave to trough of next wave and get the same value for the wavelength.

We measure wavelength in following ways:

Use photometer to measure the energy of wave.

Convert energy into joules (J).

Divide energy by Planck's constant, 6.626 x 10⁻³⁴, to get the frequency of  wave.

Divide speed of light, ~300,000,000 m/s, by frequency to get wavelength.

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Answer:

see below

Explanation:

1. Heat energy is added to the substance, weakening the electrical attraction between molecules.

2. Both the melting point and boiling point are lower.

3. dipole

4. Water and ethanol have different molecular structures.

5. The lone pairs of electrons in the oxygen atom causes the molecule to be bent; the oxygen atom has a partial negative charge, while the hydrogen atoms have partial positive charges.

[quizlet: captncrun]

Heat is a form factor that changes the solid from light to light to gaseous mediums. The phases take place in a cyclic manner.

Hence the correct option is C.

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Answer:

electric current is the rate of charge flow past a given point in an electric circuit.

Explanation:

Hopefully this is the answer

Answer:An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space. It is measured as the net rate of flow of electric charge past a region.

Explanation:

Answer:

Explanation:

I think 'The heat from Earth's core causes material in the area under the crust to become denser and rinse, while less dense material sinks.

Answer:

It is the same it has cycles related to it (that's what I could think of)

The situation that happens when solar cells are added to a person’s house and the energy of the sun is greater than the energy needs of the house is an excedent of energy that can be received by the system and feed other homes.

Solar radiation is a type of renewable source of energy that can be obtained by using solar panels that trap solar energy and then convert it into electricity.

Therefore, with this data, we can see that solar radiation is a clean source of energy that can be sued to feed the public system.

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\({ \red{ \underline{ \tt{Langmuir \: adsorption \: isotherm:}}}}\)

The defect of Freundlich adsorption isotherm is that it fails at high pressure of the gas.

Langmuir derived the adsorption isotherm based on the theoretical considerations. It is generally applied to chemical adsorption.

It can be expressed as

\({ \blue{ \bold{ \frac{X}{m} = \frac{AP}{1+BP}}}}\)

where,

X = mass of the gas adsorbed

M = mass of the adsorbent

P = equilibrium pressure

By far the most characteristic reaction of aromatic compounds is substitution at a ring carbon. This reaction is called electrophilic aromatic substitution.

In electrophilic aromatic substitution, an electrophile (a species that is electron-deficient and seeks electrons) attacks the aromatic ring, replacing one of the hydrogen atoms. The electrophile becomes bonded to the ring, and the hydrogen is lost as a proton. This reaction is initiated by a catalyst, usually a Lewis acid, that helps to generate the electrophile.

One common example of electrophilic aromatic substitution is halogenation, where a halogen (e.g., chlorine, bromine) is introduced onto the benzene ring. This reaction proceeds via the formation of a halonium ion intermediate, which is then attacked by the aromatic ring. The final product is a halogen-substituted benzene molecule.

Another example of electrophilic aromatic substitution is nitration, where a nitro group (–NO2) is introduced onto the benzene ring. This reaction proceeds via the formation of a nitronium ion intermediate, which is then attac

Lastly, sulfonation is another example of electrophilic aromatic substitution. In this reaction, a sulfonic acid group (–SO3H) is introduced onto the benzene ring, and this proceeds via the formation of a sulfur trioxide intermediate, which is then attacked by the aromatic ring.

Overall, electrophilic aromatic substitution is a crucial reaction in organic chemistry, and it allows for the synthesis of a vast array of substituted aromatic compounds.

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Answer:

3.4 mol H2SO4

Explanation:

Took the test

Answer:

Explanation:

The estimated enthalpy of triple bonds between nitrogen in a nitrogen molecule is -315kJ/mole.

To estimate the enthalpy of the triple bond between nitrogen atoms in an N2 molecule, we can use the enthalpies of formation of N2 and the individual nitrogen atoms, which are listed in Appendix C.

The enthalpy of formation (ΔHf) of a substance is the change in enthalpy when one mole of the substance is formed from its constituent elements in their standard states (usually at 25°C and 1 atm). For example, the enthalpy of formation of N2(g) is defined as:

N2(g) → 2N(g) ΔHf = 946 kJ/mol

This means that it takes 946 kJ of energy to form one mole of N2 from its constituent nitrogen atoms.

On the other hand, the enthalpy change for breaking the N2 molecule into two nitrogen atoms is equal in magnitude but opposite in sign to the enthalpy of formation of N2, because breaking a bond requires energy input.

Therefore, we have: N2(g) → 2N(g) ΔHf = -946 kJ/mol

To estimate the enthalpy of the triple bond, D(N‚N), we can assume that breaking the N2 molecule into two nitrogen atoms requires breaking three equivalent bonds, each with the same bond energy. Therefore:

D(N‚N) = ΔHf/N2 ÷ 3

Substituting the values, we get:

D(N‚N) = (-946 kJ/mol)/3

D(N‚N) = -315 kJ/mol

Therefore, the estimated enthalpy of the triple bond between nitrogen atoms in an N2 molecule is -315 kJ/mol. This means that breaking the N2 molecule into two nitrogen atoms requires an input of 315 kJ of energy per mole of N2. Conversely, forming an N2 molecule from two nitrogen atoms releases 315 kJ of energy per mole of N2.

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Answer:

3 atoms

Explanation:

Answer:

Advantages of tidal energyRenewable.

Tidal energy is a renewable source of energy, which means the energy doesn’t deplete as it is used. …

 Zero carbon emissions. In addition to being a renewable energy source, tidal power stations do not emit greenhouse gasses during electricity generation. … Predictable. … High power output.

Explanation:

Before a titration, indicator is added to the analyte (which is in the flask, and usually the chemical of unknown concentration).  The titrant is then placed in a burette and slowly titrated into the analyte.  When the indicator changes color is when the endpoint of the titration has been reached.  This occurs (approximately) at the equivalence point.

The enthalpy of reaction once you have m, the mass of your reactants, s, the specific heat of your product, and T, the temperature change from your reaction.

Therefore,

Weight water = 348 g

Specific Heat capacity Cp = 2.06 J/g °c

Temperature change ΔT =   127 -103 = 24

Change in enthalpy of the System ΔH = m Cp  ΔT

 = 348 x 2.06 x 24= 17205.12 J.

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