what is the percent yield of sulfur if 7.54 grams of sulfar are obtained from the reaction of 6.16 gram sof so2 with excess h2s

Answer:

Look in explanation.

Explanation:

Mendeleev has ordered the elements based on increasing atomic mass, he has skipped some elements but assumed that they existed and managed to find the atomic mass of the "unknown" elements.

Mendeleev corrected some elements' known atomic masses and used the patterns in his table to anticipate the properties of elements he thought must exist but had yet to be discovered. To depict those unknown elements, he left blank spaces in his chart.

The periodic table is a tabular array of chemical elements organized by atomic number, beginning with hydrogen and progressing to oganesson, which has the highest atomic number.

An element's atomic number is the number of protons in the nucleus of an atom of that element.

Mendeleev adjusted the recognized atomic masses of certain elements and utilized the patterns in his chart to predict the composition of the sample he assumed must reside but that had yet to be unearthed.

He left blank spaces in his chart to represent those unknown elements.

Thus, this way, he predicted their atomic weights and chemical properties.

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Approximately 0.268 grams of sodium azide needs to be loaded into the airbag to fully inflate it at standard temperature and pressure.

To calculate the amount of sodium azide required to inflate an airbag, we first need to understand the chemical reaction that takes place. The sodium azide reacts with the potassium nitrate inside the airbag to produce nitrogen gas, which inflates the bag. The reaction is as follows:

\(2NaN_3 + 2KNO_3 \rightarrow3N_2 + 2Na_2O + K_2O\)

From the balanced chemical equation, we can see that 2 moles of sodium azide (NaN3) react to produce 3 moles of nitrogen gas (N2).

The volume of the airbag is given as 139 liters, which is equivalent to 0.139 cubic meters. At standard temperature and pressure (STP), the volume of one mole of gas is 22.4 liters. Therefore, the number of moles of nitrogen gas required to fill the airbag is:

n = V/STP = 0.139/22.4 = 0.00620 moles

To produce 3 moles of nitrogen gas, we need 2 moles of sodium azide. Therefore, the number of moles of sodium azide required is:

n(NaAzide) = (2/3) x n(N2) = (2/3) x 0.00620 = 0.00413 moles

The molar mass of sodium azide is 65 grams/mole. Therefore, the mass of sodium azide required to inflate the airbag is:

Mass = n(NaAzide) x Molar mass = 0.00413 x 65 = 0.268 grams

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To fully inflate an airbag, about 50 grams of sodium azide is required. This chemical is stored in the airbag and when the sensor detects a crash, it is ignited, producing nitrogen gas which inflates the bag.

Sodium azide is a highly toxic and explosive substance, and must be handled with great care during the manufacturing and installation of airbags. Once the airbag is deployed, the nitrogen gas produced by the reaction of sodium azide with a metal oxide is harmless and rapidly dissipates into the atmosphere.It is important to note that tampering with an airbag or attempting to remove sodium azide from an airbag is extremely dangerous and should never be attempted. Only trained professionals should handle airbag installation and removal.

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Answer:

Your answer ,it is not equal to it

if 4.50 grams of aluminum hydroxide reacts with 7.65 grams of sulfuric acid 7.44 grams of water are formed? molar mass aluminum hydroxide

Aluminum hydroxide is amphoteric in acid it acts as a Bronsted Lowry base it neutralizes the acid, yielding a salt

Here given data is

Aluminum hydroxide = 4.50 grams

Sulfuric acid = 7.65 grams

We have to calculated grams of water are formed = ?

Molar mass aluminum hydroxide =  78.00 g/mol, molar mass of sulfuric acid = 98.08 g/mol, molar mass of water = 18.02 g/mol

Then the reaction is

2Al(OH)₃ + 3H₂SO₄ → Al₂(SO₄)₃ + 6H₂O

4.50 grams/ 78.00 g/mol = 0.057mole

7.65 grams/98.08 g/mol = 0.077mole

Then 0.057mole + 0.077mole = 0.134 mole

Al₂(SO₄)₃ =  0.134 mole

So, 0.134 mole/18g/mol = 7.44g

7.44 grams of water are formed

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The measure of the total energy radiated by a star in one second is called luminosity.

Luminosity represents the intrinsic brightness of a star and is a measure of the total power output in terms of energy. It is an important characteristic of a star that indicates its size and temperature.

Luminosity is typically expressed in units of watts or solar luminosities (the luminosity of our Sun). Flux, on the other hand, refers to the amount of energy received per unit area per unit time, and it is influenced by the distance between the star and the observer. Apparent magnitude and absolute magnitude are measures of a star's brightness as observed from Earth and at a standard distance, respectively, and they are related to luminosity but not the direct measure of energy radiated.

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The concentration of hydroxide ion in the final solution is 8 x 10-³ M.

To find the [OH-] in the final solution after adding water, we'll use the formula:

[OH-] = (initial moles of OH-) / (final volume)

First, let's calculate the initial moles of OH- in the NaOH solution:

Molarity = moles/volume

2.4 x 10-² M = moles / 0.10 L
moles = (2.4 x 10-² M) * 0.10 L
moles = 2.4 x 10-³ mol of OH-

Now, let's find the final volume of the solution after adding 0.20 L of water:

Initial volume = 0.10 L
Added volume = 0.20 L
Final volume = 0.10 L + 0.20 L = 0.30 L

Finally, let's find the [OH-] in the final solution:

[OH-] = (2.4 x 10-³ mol) / 0.30 L
[OH-] = 8 x 10-³ M

So, the concentration of [OH-] in the final solution is 8 x 10-³ M.
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halogens have 7

allali have 2

noble gases have 8

K = 1

P = -3

Ra= 7

Cl = -1

N = 5

O = 6

An alpha particle bombardment of aluminum with an atomic number of 27 results in the production of a neutron and phosphorus 15. The particular isotope formed is aluminum-28.

Fundamental alterations take place at the level of the atomic nucleus during nuclear reactions. Analyze the properties of the neutron, which has a mass similar to that of a proton but no electric charge. As a result, when it interacts with the aluminum core, the atomic number should remain constant but the atomic mass should rise by one unit. The newly produced atom is in an excited state when it transitions to the base state with the emission of a high-energy radiation called a gamma ray. Aluminum-28 isotope is formed.   ⁷A₂₇ + ⁰n₁ → ⁷Al₂₈ˣ

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Answer:

C. the amount of drug x given to mice

Answer:

monkey

Explanation:

cause that's what u r

After the death of the Buddha, Buddhism became a formal religion through the efforts of his followers, who continued to spread his teachings and organized into communities known as sanghas. Over time, these sanghas developed a system of governance, with monastic councils, hierarchical structures, and formalized practices and rituals.

One key factor in the formalization of Buddhism was the development of the Tripitaka, a collection of the Buddha's teachings, which were written down in the Pali language and preserved by monastic communities. The Tripitaka contains three major sections: the Vinaya Pitaka, which outlines the rules and guidelines for monastic life; the Sutta Pitaka, which contains the Buddha's discourses on a wide range of topics; and the Abhidhamma Pitaka, which provides a detailed analysis of Buddhist psychology and philosophy.
The spread of Buddhism was also facilitated by the patronage of rulers such as Asoka, who supported the religion and helped to spread it throughout his empire. However, this support was not always consistent, and Buddhism faced periods of persecution and decline in various parts of the world. Despite these challenges, Buddhism has continued to evolve and adapt over the centuries, with different schools and traditions emerging in different regions. Today, Buddhism is practiced by millions of people around the world, and continues to offer a unique and powerful perspective on the nature of reality, the human condition, and the path to liberation.

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Answer:

The answer is a constellation

Explanation:

This is because the hydrogen bonding in water H2O is stronger than that is hydrogen sulfide H2S.

Answer: hi

The words "geosphere," "hydrosphere," and "biosphere" all use the root "sphere" to refer to different aspects of the Earth. The "geosphere" refers to the solid earth, including the land and rock formations. The "hydrosphere" refers to the Earth's water, including oceans, rivers, and lakes. The "biosphere" refers to the Earth's living organisms and their interactions with each other and the environment. The use of the word "sphere" in these terms refers to the holistic, global nature of these aspects of the Earth and their interactions with one another.

Explanation:

The number-average molecular weight of the polypropylene is approximately 63,120 g/mol.

The repeat unit molecular weight of polypropylene can be calculated by summing the atomic weights of all the atoms in the monomer unit. The monomer unit of polypropylene is:

CH3-CHCH2

The atomic weights of the atoms in this monomer unit are:

C = 12.01

H = 1.008

Adding these atomic weights gives:

12.01 + 3(1.008) + 2(12.01) + 1.008 = 42.08 g/mol

Therefore, the repeat unit molecular weight of polypropylene is approximately 42.08 g/mol.

The number-average molecular weight of a polymer is given by the formula:

Mn = (ΣNiMi) / ΣNi

where Ni is the number of polymer chains with molecular weight Mi.

For a polypropylene with a degree of polymerization of 1500, the number of polymer chains is:

N = 2^(n-1) = 2^(1500-1) = 1.76 x 10^450

Assuming a polydispersity index of 1.0, which means all polymer chains have the same molecular weight, the number-average molecular weight can be calculated as:

Mn = (N)(M) / N = M

where M is the molecular weight of a single polymer chain.

The molecular weight of a single polymer chain can be calculated by multiplying the repeat unit molecular weight by the degree of polymerization:

M = (repeat unit molecular weight) x (degree of polymerization)

M = 42.08 g/mol x 1500

M = 63,120 g/mol

Therefore, the number-average molecular weight of the polypropylene is approximately 63,120 g/mol.

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Answer:

I think it the second one adding external weight or the third one

Explanation:

I could never. im more like the last one

I'm really sorry if this was no help

OSHA would only require the use of eight of the nine pictograms that the GHS employs. Although not required, the environmental pictogram could be employed to provide supplementary information.

Anything without risks to one's physical safety and health is not dangerous and does not need a safety data sheet (SDS). Be aware that many dusts, including flour as well as hardwood dusts, contain potential health risks and demand an SDS.

Wood or wood-based items. the definition of explosives in the Explosives Act. radioactive nuclear substances as defined by the Nuclear Safety as well as Control Act. hazardous waste which is being bought and sold either through recovery, recycling, and disposal.

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The strongest bond in the given group is the C≡C since it is a triple covalent bond.

The correct option is D

Covalent bonds are the bonds formed by the sharing of electrons between two atoms that have electronegativity values close to each other.

Covalent bonds are usually formed between non-metal atoms.

Depending on the number of electron pairs shared between two atoms, covalent bonds can be divided into:

single covalent bonds - involve the sharing of an electron pair

double covalent bonds -involve the sharing of two electron pairs

triple covalent bonds - involve the sharing of three electron pairs. This is the strongest covalent bond.

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The splitting of large nuclei method is representative of a fission reaction. Thus, option A is the answer.

Fission reaction refers to a type of nuclear reaction in which the nucleus of an atom is split into two or smaller nuclei, along with the release of a large amount of energy. This process can occur naturally but is also commonly induced in nuclear reactors and weapons.

In a fission reaction, the nucleus of an atom, typically a heavy element such as uranium or plutonium, is bombarded with neutrons. This causes the nucleus to become unstable and split into two or smaller nuclei, as well as several neutrons. These neutrons can then go on to initiate additional fission reactions, leading to a chain reaction and the release of a significant amount of energy in the form of heat and radiation.

Fission reactions are the basis for the operation of nuclear reactors, where the heat generated by the chain reaction is used to produce electricity. However, they are also the source of the energy released by nuclear weapons. Fission reactions can be highly destructive, producing massive explosions and long-term environmental damage from the radiation released.

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The number of units of aluminum chloride (AlCl₃) that can be produced from 30 atoms of aluminum (Al) is 30 units

The balanced equation for the reaction is given below:

2Al + 3Cl₂ — > 2AlCl₃

From the balanced equation above,

2 atoms of Al reacted to produce 2 units of AlCl₃.

With the above information, we can determine the number of units of AlCl₃ that can be produced by the reaction of 30 atoms of Al. This can be obtained as follow:

From the balanced equation above,

2 atoms of Al reacted to produce 2 units of AlCl₃.

Therefore,

30 atoms of Al will also react to produce 30 units of AlCl₃.

Thus, 30 units of AlCl₃ were obtained from the reaction.

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Answer:

A bar graph shows the relationship between different values of data. Each data value is represented by a column in the graph.

Answer:

it's thermal energy

Explanation:

There are five types of kinetic energy: radiant, thermal, sound, electrical and mechanical.

#carry on learning

Hope it helps

In this exercise we have to use the knowledge of kinetic energy and we can also describe it as a thermal energy.

Kinetic energy is a type of energy that is related to the movement of bodies. The result of kinetic energy is intrinsically linked to the value of the object's mass and its speed of movement.

Kinetic energy does not depend exclusively on the speed of a body but also on its mass. Any type of body in motion is endowed with this type of energy: translation, rotation, vibration and others.

With these definitions we can write that it will be the same as saying that kinetic energy can be transformed into thermal energy.

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The molarity of a solution of 12.9 g fructose and 31.0 g water is 1.26 M.

Molarity is the number of moles of solute dissolved in one liter of a solution. The formula to calculate molarity is:

Molarity (M) = moles of solute / liters of solution

To find the molarity of the given solution, we first need to determine the number of moles of fructose present. We can do this using the molar mass of fructose.

Molar mass of fructose = (6 x 12.01 g/mol) + (12 x 1.01 g/mol) + (6 x 16.00 g/mol)= 180.18 g/mol

The number of moles of fructose present in 12.9 g can be calculated as:

Number of moles of fructose = mass of fructose / molar mass of fructose= 12.9 g / 180.18 g/mol= 0.0716 mol

Number of moles of water = mass of water / molar mass of water= 31.0 g / 18.02 g/mol= 1.722 mol

Now, we can calculate the total volume of the solution.

Total mass of the solution = mass of fructose + mass of water= 12.9 g + 31.0 g= 43.9 g

We can convert this to liters using the density of water.

Density of water = 1 g/mL= 1000 g/L43.9 g = 0.0439 L (volume of solution)

Now that we know the number of moles of fructose and water and the volume of the solution, we can calculate the molarity:

Molarity (M) = moles of solute / liters of solution= 0.0716 mol / 0.0439 L= 1.26 M

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Answer:

To calculate the number of grams of H2 gas in the given sample, we need to use the ideal gas law and the molar mass of H2.

The ideal gas law equation is given by:

PV = nRT

Where:

P = pressure (at STP, it is 1 atm)

V = volume (24.5 mL converted to liters, so it becomes 0.0245 L)

n = number of moles

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

T = temperature (at STP, it is 273.15 K)

We need to solve for 'n' (number of moles) first:

PV = nRT

(1 atm)(0.0245 L) = n(0.0821 L·atm/mol·K)(273.15 K)

n = (1 atm * 0.0245 L) / (0.0821 L·atm/mol·K * 273.15 K)

n ≈ 0.00101 mol

Now we can calculate the mass of H2 gas using the molar mass of H2, which is approximately 2 g/mol:

Mass = number of moles * molar mass

Mass = 0.00101 mol * 2 g/mol

Mass ≈ 0.00202 g

Therefore, there are approximately 0.00202 grams of H2 gas in the 24.5 mL sample at STP.

A 24.5 mL sample of H2 gas was collected from an experiment at STP. 0.002 grams of gas are in this sample according to ideal gas law equation.

To calculate the mass of a gas sample, we can use the ideal gas law equation: PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature.

At STP (Standard Temperature and Pressure), the conditions are defined as 0 degrees Celsius (273.15 K) and 1 atmosphere (1 atm) of pressure.

Given:

Volume (V) = 24.5 mL = 24.5 cm³

Temperature (T) = 273.15 K

Pressure (P) = 1 atm

First, we need to convert the volume from milliliters to liters:

V = 24.5 mL = 24.5 cm³ = 24.5 × 10⁻³ dm³ = 0.0245 L

Using the ideal gas law equation, we can rearrange it to solve for the number of moles (n):

n = PV / RT

Plugging in the known values:

n = (1 atm) × (0.0245 L) / [(0.0821 L·atm/(mol·K)) × (273.15 K)]

Simplifying the equation gives:

n ≈ 0.001 mol

To calculate the mass of the gas sample, we need to multiply the number of moles (n) by the molar mass of hydrogen (H₂):

Mass = n × Molar mass

Molar mass of H₂ = 2 g/mol

Mass = 0.001 mol × 2 g/mol = 0.002 g

Therefore, the mass of the H₂ gas sample is approximately 0.002 grams.

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The rate law for the first elementary reaction equation, 2a(g) + b(g) ⟶ c(g) + d(g), is rate = k[a]^2[b]. The rate law for the second elementary reaction equation, x(g) + y(g) ⟶ z(g), is rate = k[x][y].

The rate law represents the mathematical relationship between the rate of a chemical reaction and the concentrations of the reactants. In the first elementary reaction equation, 2a(g) + b(g) ⟶ c(g) + d(g), the rate of the reaction depends on the concentrations of the species involved. Since there are two molecules of a(g) and one molecule of b(g) in the balanced equation, the rate law is expressed as rate = k[a]^2[b]. The exponent of 2 in [a]^2 indicates that the reaction rate is directly proportional to the square of the concentration of a(g), while the exponent of 1 in [b] indicates that the reaction rate is directly proportional to the concentration of b(g).

In the second elementary reaction equation, x(g) + y(g) ⟶ z(g), the rate of the reaction is determined by the concentrations of the reactants. The rate law is written as rate = k[x][y], indicating that the reaction rate is directly proportional to the concentrations of both x(g) and y(g). The exponents of 1 in [x] and [y] indicate that the reaction rate is directly proportional to the respective concentrations of the reactants.

Overall, the rate laws for these two elementary reaction equations express the dependence of the reaction rate on the concentrations of the reactants involved.

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Answer:

Ability to form four covalent bonds.

Explanation:

Carbon is the first member of group 14. It is essentially a nonmetal. It is a small atom which regularly exhibits tetra valency. This means that carbon is able to form four covalent bonds to four chemical species which may be the same or different each time. This leaves room for many different possible combination patterns of carbon with other chemical species.

Hence carbon forms a very large number of compounds due to its small size and its ability for form four covalent bonds to other chemical species in any bonding situation.

Answer: the ability to form four covalent bonds

Explanation:

Answer:

Presence of an Electrolyte

Metal Surface

Oxygen or Other Oxidizing Agent

Difference in Potential

Electrochemical Pathway

Explanation:

Answer:

i think it is A

Explanation:

i got this answer from a good friend

The magma deep below Earth's surface cool slowly.Large crystals form results from magma cooling deep below Earth's surface. Therefore, option A is correct.

Magma is the molten or semi-molten natural material that gives rise to all igneous rocks. Magma can be found beneath the Earth's surface, and evidence of magmatism has been discovered on other terrestrial planets and natural satellites.

When magma slowly cools deep within the crust, the resulting rock is known as intrusive or plutonic. Because of the slow cooling, crystals can grow large, giving intrusive igneous rock a coarse-grained or phaneritic texture. Individual crystals in phaneritic texture can be seen with the eye.

Intrusive igneous rocks form when magma slowly cools and solidifies beneath the Earth's surface. Large, well-formed crystals are found in intrusive igneous rocks such as granite, gabbro, diorite, and dunite.

Thus, option A is correct.

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