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The options "The mass ratio of S is .400 and The mass percentage of O is 60%" , Both  are correct of the elements in sulfur trioxide (\(SO^3\))

The molecular formula of sulfur trioxide (\(SO^3\)) contains one sulfur atom and three oxygen atoms. To calculate the mass ratios and mass percentages of each element in \(SO^3\\\), we need to know the atomic masses of sulfur and oxygen:

Sulfur (S): 32.06 g/mol

Oxygen (O): 16.00 g/mol

Mass ratio of S:

The mass ratio of sulfur (S) in \(SO^3\\\) is the mass of sulfur divided by the total mass of the compound:

Mass ratio of S = mass of S / (mass of S + mass of O)

Mass ratio of S = \(32.06 g/mol / (32.06 g/mol + 3(16.00 g/mol))\)

Mass ratio of S =\(32.06 g/mol / 80.06 g/mol\)

Mass ratio of S = 0.400

Therefore, option 1 "The mass ratio of S is .400" is correct.

Mass percentage of O:

The mass percentage of oxygen (O) in \(SO^3\) is the mass of oxygen divided by the total mass of the compound, multiplied by 100%:

Mass percentage of O = (mass of O / total mass) x 100%

Mass percentage of O = \((3(16.00 g/mol) / (32.06 g/mol + 3(16.00 g/mol))) * 100%\)

Mass percentage of O = \(48.00 g/mol / 80.06 g/mol * 100%\)

Mass percentage of O = 59.97%

Rounding to one significant figure, the mass percentage of O in \(SO^3\\\) is 60%.

Therefore, option 2 "The mass percentage of O is 60%" is also correct.

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9. The number of mole of the argon contained in the tank is 2.39 moles

10. The volume (in liters) of H₂O produced from the reaction is 73.5 liters

The number of mole of the argon contained in the tank can be obtained as follow:

PV = nRT

Inputting the given parameters, we have:

9.4 × 6.25 = n × 0.0821 × 299

Divide both sides by (0.0821 × 299)

n = (9.4 × 6.25) / (0.0821 × 299)

n = 2.39 moles

Thus, the number of mole of the argon gas in the tank is 2.39 moles

The volume of H₂O produced can be obtained as shown below:

4NH₃(g) + 5O₂(g) -> 6H₂O(g) + 4NO(g)

From the balanced equation above,

4 liters of NH₃ reacted to produced 6 liters of H₂O

Therefore,

49 liters of NH₃ will react to produce = (49 × 6) / 4 = 73.5 liters of H₂O

Thus, the volume of H₂O produced is 73.5 liters

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Answer:

universal waste

hope it helps

Answer:

Greatly affect.

Explanation:

This level of fishing will greatly affect the populations of the other fish in the simulated reef because overfishing disturbs the equilibrium in the marine ecosystem. One fish is a food of another fish or the big fish act as a controller which controls the population of other small fishes and in that way the ecosystem is present in equilibrium state so overfishing will greatly affect the marine ecosystem.

Respuesta:

Las fuerzas intermoleculares que actúan entre las moléculas se clasifican en : Dipolos permanentes. Dipolos inducidos. Dipolos dispersos.

Explicación:

Dentro de una molécula, los átomos están unidos mediante fuerzas intramoleculares (enlaces iónicos, metálicos o covalentes, principalmente). Estas son las fuerzas que se deben vencer para que se produzca un cambio químico. Son estas fuerzas, por tanto, las que determinan las propiedades químicas de las sustancias.

Sin embargo existen otras fuerzas intermoleculares que actúan sobre distintas moléculas o iones y que hacen que éstos se atraigan o se repelan. Estas fuerzas son las que determinan las propiedades físicas de las sustancias como, por ejemplo, el estado de agregación, el punto de fusión y de ebullición, la solubilidad, la tensión superficial, la densidad, etc.

Answer:

320 g.

Explanation:

Hello!

In this case, according to the balanced chemical reaction, we can compute the grams of copper I chloride produced by each reactant, as shown below:

\(m_{CuCl}^{by\ Cu}=3.23molCu*\frac{2molCuCl}{2molCu}*\frac{99.0gCuCl}{1molCuCl} =320gCuCl\\\\m_{CuCl}^{by\ Cl_2}=1.64molCl_2*\frac{2molCuCl}{1molCl_2}*\frac{99.0gCuCl}{1molCuCl} =325gCuCl\)

Thus, since copper produces the fewest grams of CuCl, we infer it is the limiting reactant, therefore the correct mass of copper I chloride is 320 g.

Best regards!

Answer:

The reaction rate of a chemical reaction depends on several factors, including the concentration of the reactants, temperature, surface area, and the nature of the reactants themselves. In the case of the reaction of magnesium metal with hydrochloric acid and acetic acid, the nature of the acids is different - one is a strong acid and the other is a weak acid.

A strong acid is an acid that completely dissociates into its ions when it is dissolved in water, while a weak acid only partially dissociates into its ions. In the case of hydrochloric acid, it dissociates completely into its ions, H+ and Cl-, when it is dissolved in water. This means that there are a large number of H+ ions available to react with the magnesium metal, which increases the rate of the reaction. On the other hand, acetic acid only partially dissociates into its ions, CH3COO- and H+, when it is dissolved in water. This means that there are fewer H+ ions available to react with the magnesium metal, which decreases the rate of the reaction.

However, the students found that the reaction times were the same for both acids, despite the fact that one was a strong acid and the other was a weak acid. This can be explained by the fact that the concentration of the acid used in the experiment was not specified. It is possible that the students used a higher concentration of acetic acid compared to hydrochloric acid, which compensated for the weaker acidity of acetic acid. In this case, the rate of the reaction with acetic acid would be similar to that of hydrochloric acid, resulting in the same reaction time for both acids.

Another possible explanation is that the reaction with acetic acid proceeded via a different mechanism than the reaction with hydrochloric acid. For example, acetic acid can react with magnesium metal to form a complex, which can then react further to produce hydrogen gas. This mechanism would not be affected by the weak acidity of acetic acid, and therefore the reaction time would be the same as that of hydrochloric acid.

In summary, the reaction times for the reaction of magnesium metal with hydrochloric acid and acetic acid can be the same if the concentration of the acids used is not specified, or if the reaction proceeds via a different mechanism in the case of acetic acid.

The balloon will burst at a temperature of approximately 159°C.

To solve this problem, we can use the combined gas law, which relates the pressure, volume, temperature of a gas:

\((P_1V_1)/T_1 = (P_2V_2)/T_2\)

First, we need to convert the initial pressure of 750 mmHg to atm:

750 mmHg x 1 atm/760 mmHg = 0.987 atm

Then we can plug in the values we know and solve for \(T_2\):

(0.987 atm x 255 L) / (295 K) = (0.465 atm x 420 L) / T2

Simplifying and solving for \(T_2\), we get:

T2 = (0.987 atm x 255 L x 295 K) / (0.465 atm x 420 L) = 433 K

Convert the temperature to Celsius:

T2 = 433 K - 273.15 = 159.15°C

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The four quantum numbers that identify the highest energy electron in a francium, fr, atomic orbital are n, ℓ, m, and s.

The energy levels of an atom are connected by a set of quantum numbers. The entire and singular quantum state of a single electron in an atom, also known as its wave function or orbital, is described and explained by the four quantum numbers, n, l, m, and s. Accordingly, the four quantum numbers are n, l, m, and s.

The quantum number is used to define the location of electrons, and an orbital is a place inside the atom where an electron can be found. The quantum number of the shell orbitals of an atom depends on the number of electron shells it contains.

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Answer:

  665 kJ

Explanation:

We assume that carbohydrates and protein each have 4 kilocalories per gram, and that fat has 9 kilocalories per gram. Then the number of kilocalories in the peanut butter is ...

  4(6 +9) +9(11) = 159 . . . . kilocalories

Each kilocalorie translates to 4.184 kilojoules, so the total is ...

  (159 kCal)(4.184 kJ/kCal) = 665.256 kJ

2 Tbsp of crunchy peanut butter contains about 665 kJ of energy.

The number of kilojoules in two table spoons of crunchy peanut butter obtained by adding the amount of kilojoules in each food type is 673kJ

From the table given ; the amount of kilojoules per gram of each food type is :

I gram of Carbonhydrate = 17 kJ

6 grams of Carbonhydrate = (6 × 17) = 102 kJ

I gram of Fat = 38 kJ

11 grams of Carbonhydrate = (11 × 38) = 418 kJ

I gram of Protein = 17 kJ

9 grams of Carbonhydrate = (9 × 17) = 153 kJ

Therefore, the total kilojoules present is (102 + 408 + 153)kJ = 673 kJ

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Answer:

A. 60 kPa

Explanation:

P2 = p1 times t2 / t1

Answer:

Hydrogen bonding - London dispersion forces - dipole-dipole interactions

Strongest ----> Weakest

Explanation:

Intermolecular forces hold multiple molecules together and determine many of a substance's properties. All of the attractive forces between neutral atoms and molecules are known as van der Waals forces, although they are usually referred to more informally as intermolecular attraction.

Intermolecular forces are the forces of attraction or repulsion which act between neighboring particles (atoms, molecules, or ions ). These forces are weak compared to the intramolecular forces, such as the covalent or ionic bonds between atoms in a molecule.

The correct order of the particles that give texture to the soil from smallest to largest is clay, silt, and sand; option C.

Soil texture refers to a physical classification of the component and types of soils based on their physical texture either as coarse or fine particles.

There are several types of soils and these various types of soils have different textures.

The types of soils and their arrangement based on increasing particle size are as follows:

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Answer:

A solubility curve can help your draw out the graphical connection between temperature and the solubility of a substance. The X-axis denotes temperatures and the Y-axis shows the solubility of the substance.

Explanation:

Answer:

conservation of mass

The ratio of the concentrations at equilibrium is as follows:

Chemical equilibrium is the point in a chemical reaction where both the forward and backward processes are occurring at the same rate.

The concentrations of the reactants and products are constant at equilibrium because the forward and reverse speeds are equal.

Considering the given statements based on the reaction equilibrium concentrations, the correct options are:

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The chemical formula for x and y is Cu₂O and CuO. The mass cooper which can react with 0.5g of oxygen to yield x and y is 2.745 g.

A chemical formula is a phrase that lists the constituent parts of a compound together with their relative quantities. No subscript is used if there is just one atom of a certain kind. A subscript is added to the symbol of an atom if it contains two or more of a certain type of atom.

1. 1.535 g of X → 1.365 g of Copper

1.535 – 1.365 = 0.170g of Oxygen

Atomic weight of Cu = 63.5,

Atomic weight of Oxygen = 16

For Cu 1.365 g / 63.5 = 0.02 mol

For Oxygen 0.170 g / 16 = 0.01 mol

X = Cu₂O

1.450 g of Y → 1.160 g of Cu

1.450 – 1.160 = 0.290 g of Oxygen

For Cu = 1.160 g / 63.5 = 0.018 mol

For Oxygen = 0.290 g / 16 = 0.018 mol

Y = CuO

2. The total mass of Oxygen = 0,170 g + 0,290 g

= 0.460 g

Total mass of Cu = 1.160 g + 1. 365 g

= 2.525 g

0.460 g of Oxygen → 2.525 g of Cu

0.500 g of Oxygen → (2.525 x 0.5) / 0.460

= 2.745 g of Cu

Thus, The law of multiple proportions was formulated by John Dalton in 1804.

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Answer:

93.5 kPa

Explanation:

Step 1: Given data

Step 2: Convert the temperatures to the Kelvin scale

When working with gases, we need to consider the absolute temperature. We will convert from Celsius to Kelvin using the following expression.

K = °C + 273.15

T₁: K = 50°C + 273.15 = 323 K

T₂: K = 100°C + 275.15 = 373 K

Step 3: Calculate the final pressure of the gas

At a constant volume, we can calculate the final pressure of the gas using Gay-Lussac's law.

P₁/T₁ = P₂/T₂

P₂ = P₁ × T₂/T₁

P₂ = 81.0 kPa × 373 K/323 K

P₂ = 93.5 kPa

1 mole gas at STP = 22.4 L

so volume of oxygen at STP:

\(\tt = 3.65\times 22.4~L=81.76~L\)

To determine how different medicines will affect her, the lab tested several genes that contain coding for certain traits, including allergies to medications. This genetic material is on structures called chromosomes that get passed on from generation to generation.

To determine how different medicines will affect a person, genetic testing can be conducted to analyze specific traits and potential allergies to certain medications.

In the context of genetic testing, chromosomes are typically analyzed to look for genetic variations or mutations that may impact the way an individual metabolizes certain medications.

The genetic material that contains information about traits and allergies is carried on structures called genes, which are located on chromosomes.

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The number of mole of cyclopentadiene present in the solution is 0.0232 mole.

We'll begin by converting 5.8 mL to litre (L). This can be obtained as follow:

1000 mL = 1 L

Therefore,

5.8 mL = 5.8 / 1000

Finally, we shall determine the number of mole of cyclopentadiene present in the solution. This can be obtained as follow:

Volume = 0.0058 L

Molarity = 4 M

Mole = Molarity x Volume

Mole = 4 × 0.0058

Therefore, the number of mole of cyclopentadiene present in the solution is 0.0232 mole.

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Answer: 460.458KJ/mol

Explanation:

The energy of a photon = hv = hc/ f

given wavelength = 260nm

changing nm to m becomes 260 x 10^-9m

remembering that frequency = speed of light(c)/ f wavelength

= 3 x10 ^8 / 260 x10^-9 = 1.15 x 10^15 s-1

frequency (v) = 1.15 x 10^15 s-1

Energy = hv

where h is planks constant =  6.626 X 10^-34 J⋅s

v is frequency = 1.1538 x 10^15s-1

E=  6.626X 10^-34  J⋅s X  1.15 x 10^15s-1 =7.645X 10^-19 joules

But I  mole = 6.023 X10^23

therefore Energy = 7.645X 10^-19 x 6.023 X 10^23 =460,458.35Joules / mole

460,458.35Joules / mole  To  kilojoules/mol = 460,458.35Joules / mole/1000= 460.458KJ/mol

Answer:

Iron‑56 is the most abundant isotope, so the atomic mass of iron is most similar to the mass of iron‑56.

Explanation:

The atomic abundance of the isotopes of Iron is:

⁵⁴Fe: 5.82%

⁵⁶Fe: 91.66%

⁵⁷Fe: 2.19%

⁵⁸Fe: 0.33%

Where the Iron-56 is the most abundant isotope of Iron atom

As atomic mass is defined as the sum of the masses of the ions multiplied by its abundance, and the Iron-56 is the most abundance isotope, the atomic mass of Fe most be similar to the ⁵⁶Fe mass because is the most abundant isotope.

Right option is:

Iron‑56 is the most abundant isotope, so the atomic mass of iron is most similar to the mass of iron‑56.

the atomic abundance of the isotopes of Iron is:

⁵⁴Fe: 5.82%

⁵⁶Fe: 91.66%

⁵⁷Fe: 2.19%

⁵⁸Fe: 0.33%

Since the Iron-56 is the most abundant isotope of the Iron atom

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Answer:

60c

Explanation:

80c-20c=60c i think I don't know

Answer:

2x – 3y = 11 …………….. (i)

x – 2y = – 12 …………….. (ii)

(ii) ⇒ x = 2y – 12 ……. (iii)

Substitute value of x from (iii) in (i), we get

2(2y – 12) + 3y = 11

⇒ 4y – 24 + 3y = 11

⇒ 7y = 35

⇒ y = 5

Substituting value of y = 5 in equation (iii), we get

4 = 2(5) – 12 = 10 – 12 = – 2

Hence, x = – 2, y = 5 is the required solution

Now, 5 = – 2m + 3

⇒ 2m = 3 – 5

⇒ 2m = – 2

⇒ m = – 1.

Answer:

You forgot to add a screenshot buddy.

Explanation:

The relationship between the rate of diffusion r, and d is r ∝ 1/√d.

The relationship between the rate of diffusion (r) and the density of a gas (d) can be explained using Graham's law of diffusion. According to this law, the rate of diffusion of a gas is inversely proportional to the square root of its density. Mathematically, it can be expressed as:

r ∝ 1/√d

where the symbol '∝' represents 'proportional to'. The constant of proportionality (k) can be introduced to this equation as:

r = k/√d

This equation shows that as the density of a gas increases, its rate of diffusion decreases. This is because denser gases have more molecules per unit volume and thus, they experience greater intermolecular collisions that hinder their movement. Therefore, it requires more energy for them to diffuse through a medium compared to less dense gases.

The relationship between the rate of diffusion and density is particularly important in understanding the behavior of gases in different environments. For instance, in a gas chromatography column, the rate of diffusion of a gas determines how quickly it moves through the column and separates from other components. Similarly, in the Earth's atmosphere, the rate of diffusion of greenhouse gases such as carbon dioxide affects their concentration and hence, their impact on climate change.

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Answer:

B. Carbon dating

Explanation:

In carbon dating, the radioactive isotope carbon-14 is used to determine the age of carbon containing materials, since remains in certain tissues over the years, for example: bone tissues.

That's why carbon dating is used in archaelogical finds.