Sealed containers of fizzy drinks contain dissolved carbon dioxide. The dissolved CO2 is in equilibrium with a small quantity of gaseous CO2 at the top of the container.

Find partial pressure of CO2 gas in 355 ml can of fizzy drink at 25C if the concentration of CO2 in the fizzy drink 0.1 M. Given that Henry’s law constant for CO2 is 3.3 x 10-2 M atm-1.

What mass of CO2 is dissolved in a 355 ml can of fizzy drink when it is stored at 25C.

Answer:

Explanation:

그것은 당신의 교육에 도움이 되기를 바랍니다

Answer:

Independent variable: different alcohols

Dependent variable: red dye

Answer:

chemical, physical, physical, chemical

Explanation:

both rust and bubbles are products of chemical change whilst freezing ad dissolving are physical.

The first change is a chemical change, the second and the third change is a physical change, and the fourth change is a chemical change.

While a physical change does not result in a new substance, a chemical change does. While experiencing a physical change, a material may change shape or form, but no chemical processes take place, and no new compounds are created. Other signs of chemical and physical alterations also exist.

A chemical change happens when the atoms reorganize themselves to establish new chemical bonds, creating a new molecule (product). Chemical reactions are always a part of chemical changes. The initial components and the finished result differ chemically from one another.

In a physical transformation, no new chemical species is created. Since the identity of the matter does not change, changing a pure substance's state from solid to liquid or gas constitutes a physical change. A physical alteration affects just physical attributes; chemical properties are unaffected. For instance, crystallization, melting, and steel tempering all affect the physical characteristics of materials.

Therefore, the first and fourth is a chemical change and the second and third is a physical changes.

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Answer:

decelerating hope this helps❤️

Answer:

Decelerating

Explanation:

It is slowing down, not speeding up.

Answer:

$474.30

Explanation:

23.25 × 102 = 2371.5 (total amount of money produced from pallets)

2371.5/5 = 474.3 (payout per worker)

The relationship between brightness and salt concentration is a direct

relationship.

Brightness and salt concentration having a direct relationship means that as

the salt concentration increases, the brightness increases and vice versa.

This system contains two electrodes and salt water which serves as the

electrolytes.

The salt water which contains sodium and chlorine ions flow between both

ends thereby generating the electricity in the system.

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Answer:

the second one

Explanation:because its higher

Answer:

CH3CH2CH2Ch2Ch2Ch3

Explanation:

That's the answer

The volume of air you might inhale (and exhale) in 8.00 hours is approximately 1903.2 liters.

To calculate the volume of air you might inhale (and exhale) in 8.00 hours, we need to determine the total number of breaths you take in that time and then multiply it by the volume of each breath.

First, let's calculate the number of breaths in 8.00 hours:

Number of breaths per minute = 13

Number of breaths per hour = 13 breaths/minute * 60 minutes/hour = 780 breaths/hour

Number of breaths in 8.00 hours = 780 breaths/hour * 8.00 hours = 6240 breaths

Now, let's calculate the volume of air in liters:

Volume of each breath = 0.305 liters

Volume of air inhaled and exhaled in 8.00 hours = Volume of each breath * Number of breaths in 8.00 hours

Volume of air inhaled and exhaled in 8.00 hours = 0.305 liters/breath * 6240 breaths = 1903.2 liters

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Answer:

Upwelling! Its the process where the deep cold water rises to the surface! :)

Explanation:

Hope this helps! :)

Answer:

upwelling

Explanation:

5.95 x 10^-3 = 0.006

7.33 x 10^4 = 73,300

4.09 x 10^3 = 4090

9.15 x 10^-5 = 0.000

To calculate the significant figure for a given mathematical expression means to represent the end value to specific number of digits that are accurate.

The given figures are in scientific or exponential notation but to convert them to 3 significant figures the following steps are taken:

Therefore three significant figures of the expressions given include the following:

5.95 x 10^-3 = 0.006

7.33 x 10^4 = 73,300

4.09 x 10^3 = 4090

9.15 x 10^-5 = 0.000

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Answer:

a pressure of 10 Nm -2 is equal to ?​

1 atmosphere

Explanation:

A pressure of 10 N/m² is equal to 10 Pa and 9.86x10⁻⁵ atm.

Pressure (P) is the measure of the perpendicular force (F) applied to an object's surface area (A):

\( P = \frac{F}{A} \)                          

Hence, the unit of the pressure is Newton per square meter (N/m²), which is defined as Pascal (Pa).

\( 1 Pa = 1 N/m^{2} \)

Also, we have that 1 atm is equal to 101325 Pa, so:

\( P = 1 Pa*\frac{1 atm}{101325 Pa} =9.86 \cdot 10^{-6} atm \)

So, in a pressure of 10 N/m² we have:

\( P = 10 N/m^{2} = 10 Pa = 9.86 \cdot 10^{-5} atm \)

Therefore, a pressure of 10 N/m² is equal to 10 Pa and 9.86x10⁻⁵ atm.

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There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. Therefore, test can be done to detect the given compound.

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.

Test can be done to detect the given compound. Warm NaOH should be added to ((NH\(_4\))\(_2\)SO\(_4\)). Place a moist red litmus paper over the test tube; if the paper turns blue, NH\(_4\)⁺ ions are present. If white precipitate appears after adding a few drops of (BaCl₂) to  ((NH\(_4\))\(_2\)SO), sulphate ions are present.

Therefore, test can be done to detect the given compound.

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Answer:

aluminum nitrate

Explanation:

We already know that calcium carbonate is insoluble in water hence it will not even dissolve in the water.

Mercury(I) nitrate is soluble in water, when sodium sulfate (Na2SO4) is added to mercury(I) nitrate (Hg2(NO3)2), a pale yellow precipitate is formed.

Aluminum nitrate is soluble in water and reacts with Na2SO4(aq) solution according to the reaction, 2Al(NO3)3(aq)+3Na2SO4(aq) ---> Al2(SO4)3(s)+6NaNO3(aq). The precipitate, Al2(SO4)3(s) is a white crystalline hygroscopic solid.

Answer:

Impurities will be trapped in the crystals of the benzoic acid crystallized in this manner.

Explanation:

After benzoic acid is dissolved in hot water, it should have been allowed to cool gradually before it is transferred into an ice bath.

This gradual cooling will aid the separation of impurities so that when the vessel is now submerged in an ice bath, only pure benzoic acid is recrystalized.

If the vessel is immediately submerged into an ice bath, impurities will be trapped in the crystals of the benzoic acid.

Answer:

ITS A

Explanation:

Answer:

C-green, blue, indigo

Explanation:

These are in the rainbow and visible spectrum.  Also, the other options are not correct as written

Explanation:

giving equal opportunity,making good governance, maintaining peace and harmony among people, other try to write by your self

The temperature is obtained as  1517 K.

We know that we asked here to find the temperature at which we are going to have a diffusion coefficient of 2.1 × 10−14 m2/s. Let us look at the following from the question;

D = diffusion coefficient = 2.1 × 10−14 m2/s

\(D_{o}\) = pre-exponential constant = 1.1 × 10−5 m2/s

\(E_{a}\) = Activation energy = 253,300 J/mol

R = Gas constant = 8.314 J/mol.K

T = temperature = ??

Then;

log D= log  \(D_{o}\) - Ea/2.303RT

log(2.1 × 10−14) = log( 1.1 × 10−5) - 253,300/2.303 * 8.314 * T

log(2.1 × 10−14) / log( 1.1 × 10−5) = - 253,300/2.303 * 8.314 * T

T = - 253,300/-8.719 * 2.303 * 8.314

T= 1517 K

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Answer:

pickles are ligit good

Explanation:

i like pickles but not his

Answer:

They represent it by ensuring that the number of atoms of each element (matter) in the reactant side is the same as the product side

Explanation:

The law of conservation of matter stated that matter can neither be created nor destroyed. Chemical equations involve combining atoms of elements. The compounds combined by chemists are called REACTANTS while the produced compounds are called PRODUCTS.

In order to conform to the law of conservation of matter, the same quantity of matter present in the reactants must be present in the products. This means that the number of atoms of each element (matter) in the reactant side must be the same as the product side. For example;

C6H12O6 + 6O2 → 6CO2 + 6H2O

In this chemical equation for photosynthesis, number of atoms in the reactant side (6 carbon, 12 hydrogen, 18 oxygen) are the same as that in the product side (6 carbon, 12 hydrogen, 18 oxygen), hence, this obeys the law of conservation of mass.

In a nutshell, chemists chemists properly represent the law of conservation of matter in their chemical equations by making sure that same number of atoms of reactants is present in the products.

Answer:

Explanation:1. It is known that humans are in fact eating these tiny plastic particles, but fish aren't the only source. Bottled water, beer, honey, sea salt and tea bags have all been exposed as microplastic carriers, just to name a few.

2.The chemicals used in the production of plastic are toxic and detrimental to the human body. Chemicals in plastic-like lead, cadmium and mercury directly can come in contact with the humans. These toxins can cause cancers, congenital disabilities, immune system problems and childhood development issues.

3.Microplastics entering the human body via direct exposures through ingestion or inhalation can lead to an array of health impacts, including inflammation, genotoxicity, oxidative stress, apoptosis, and necrosis, which are linked to an array of negative health outcomes including cancer, cardiovascular diseases,

4.Human penises are shrinking because of pollution, warns scientist. ... Dr Shanna Swan writes that humanity is facing an "existential crisis" in fertility rates as a result of phthalates, a chemical used when manufacturing plastics that impacts the hormone-producing endocrine system

Answer:

umm im just here for the points, im sorry if i knew i would answer it i dont take chemistry

Explanation:

Answer: 55.5 oC is 0.014 atm (3rd decimal point)

Explanation:

The Clausius-Clapeyron equation is given as:

ln(P2/P1) = -(ΔH_vap/R) * (1/T2 - 1/T1)

where:

P1 = vapor pressure at temperature T1

P2 = vapor pressure at temperature T2

ΔH_vap = enthalpy of vaporization

R = gas constant = 8.314 J/(mol*K)

Converting the enthalpy of vaporization to J/mol:

ΔH_vap = 35.2 kJ/mol = 35,200 J/mol

Converting temperatures to Kelvin:

T1 = 64.7 + 273.15 = 337.85 K

T2 = 55.5 + 273.15 = 328.65 K

Substituting the values into the equation and solving for P2:

ln(P2/1 atm) = -(35,200 J/mol / 8.314 J/(mol*K)) * (1/328.65 K - 1/337.85 K)

ln(P2/1 atm) = -4.231

P2/1 atm = e^(-4.231)

P2 = 0.014 atm

Therefore, the vapor pressure for methanol at 55.5 oC is 0.014 atm, to the third decimal point.

The molar concentration of Fe3+ in the solution is approximately 230.82 M.

To calculate the molar concentration of Fe3+, we can use the Nernst equation, which relates the cell potential to the concentrations of the species involved in the cell reaction.

The Nernst equation is given as:

Ecell = E°cell - (0.0592/n) * log(Q)

Where:

Ecell is the measured cell potential (0.65V in this case),

E°cell is the standard cell potential (0.72V in this case),

n is the number of electrons transferred in the cell reaction (in this case, it is 2, as Fe3+ gains 2 electrons to form Fe),

Q is the reaction quotient.

In this case, the reaction at the cathode is:

Fe3+(aq) + 2e- -> Fe(s)

And the reaction quotient Q can be expressed as the molar concentration of Fe3+:

Q = [Fe3+]

Substituting the given values into the Nernst equation, we have:

0.65V = 0.72V - (0.0592/2) * log([Fe3+])

Simplifying the equation:

0.65V = 0.72V - 0.0296 * log([Fe3+])

0.0296 * log([Fe3+]) = 0.07V

log([Fe3+]) = 0.07V / 0.0296

log([Fe3+]) ≈ 2.3659

Taking the antilog (inverse logarithm) of both sides:

[Fe3+] ≈ 10^(2.3659)

[Fe3+] ≈ 230.82

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Taking into account the definition of atomic number, The atomic number of an atom is the number of protons in the nucleus.

All atoms are made up of subatomic particles: protons and neutrons, which are part of their nucleus, and electrons, which revolve around them. Protons are positively charged, neutrons are neutrally charged, and electrons are negatively charged (electrons).

The atomic number of a chemical element is the total number of protons that each atom of that element has and is symbolized by the letter Z.

A neutral atom has the same number of protons in the nucleus and electrons in the orbitals, so the atomic number also indicates the number of electrons.

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Answer: The sun

Explanation:

its the real boss of the water cycle, and it doesn't even live here on Earth. The sun provides heat, or energy, which is what makes the water cycle work. The sun's heat allows water to change forms from liquid to gas to ice and back again.

Answer:

low

Explanation:

We were informed in the question that the student had incorrectly recorded the mass of cup + sample as 2.20 g but inadvertently used 2.00 g in the calculations.

This error will cause a slight decrease in the mass of water and ultimately decrease the number of moles of water in the hydrate.

What i am saying is that the number of moles of water obtained in the calculation will be artificially low.

Answer: Mass of H₂ needed to react with O₂ : 1.092 g

Further explanation

The concentration of a substance can be expressed in several quantities such as moles, percent (%) weight / volume,), molarity, molality, parts per million (ppm) or mole fraction. The concentration shows the amount of solute in a unit of the amount of solvent.

Reaction

O₂(g) + 2H₂(g) → 2H₂O(g)

mass of O₂ : 8.75 g

mol O₂(MW=32 g/mol) :

From the equation, mol ratio of O₂ : H₂ = 1 : 2, so mol H₂ :

Mass H₂ (MW=2 g/mol) :

.546 x 2 = 1.10 g

The term mole concept is used here to determine the mass of hydrogen. The mass of hydrogen is 1.10 g. Thus the correct option is B.

One mole of a substance is defined as that quantity of it which contains as many entities as there are atoms exactly in 12 g of carbon - 12. The formula used to calculate the number of moles is:

Number of moles = Given mass / Molar mass

The balanced equation when H₂ reacts with oxygen is:

2H₂ (g) + O₂ (g) → 2H₂O (g)

The molar mass of oxygen is 16.00 g/mol and the given mass is 8.75. Then the number of moles is:

8.75 g / 16.00 g/ mol = 0.546 mol

In the equation 1 mole of 'O' = 2 mole of 'H'

Then 0.546 mol 'O' = 0.546 × 2 mol of 'H' = 1.092 mol

The mass of H₂ needed to react with 8.75 g of O₂ is:

Mass = Number of moles × Molar mass

Here the molar mass of  H₂ is 1.00794 g/mol.

Then the mass is:

1.092 mol × 1.00794 g/mol = 1.10 g.

Thus the correct option is B.

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