Use the equation below to solve the problem that follows.

2H2 (g) + O2 (g) → 2H2O (g)

When David reacts 13.8 grams of hydrogen gas with excess oxygen, 87.0 grams of water are formed. Calculate his percent yield of water.

Answer:

0,1

Explanation:

12.308% of the chemical is sulfur. The compound's whole sulfur content is transformed into barium sulfate. Therefore, the mass for sulfur from barium sulfate will match the mass for sulfur in the compound.

People are not highly poisonous to sulfur. However, consuming far to much sulfur may result in diarrhea or a burning feeling. Sulfur dust inhalation might irritate the airway or make one cough. The eyes and skin may also become irritated by it.

Sulfur can indeed be found in sulfide ores and in nature. It is native to areas close to volcanoes and hot springs. The tenth most common element, sulfur, is found in almost all types of plant and animal life, meteorites, ocean ocean, the humankind's crust, and or the atmosphere.

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The chemical formula of the gas is N2.

Relative effusion rate is the rate at which a gas diffuses through a pinhole compared to the rate at which another gas diffuses through the same pinhole at the same temperature. It can be used to determine the molar mass of an unknown gas when compared to a known gas.

Here is how to use relative effusion rates to find an unknown molar mass:

1. Determine the relative effusion rate of the unknown gas compared to a known gas at the same temperature.

2. Use the formula: MR1/MR2 = √(MM2/MM1)

3. Rearrange the formula to solve for the unknown molar mass (MM2).

4. Plug in the values and solve for the unknown molar mass (MM2).The chemical formula of the gas that has an effusion rate of 2.16 times that of Xenon (Xe) is N2.

Here's the working out:

1. Determine the relative effusion rate of the unknown gas compared to Xe gas :

Relative effusion rate = √(MM Xe/MM unknown)2.16 = √(131.29/MM unknown)2.16² = 131.29/MMunknown4.6656 = 131.29/MM unknown MM unknown = 131.29/4.6656MMunknown = 28.10 g/mol The molar mass of the unknown gas is 28.10 g/mol. The only homonuclear diatomic molecule with a molar mass close to that value is nitrogen (N2).

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The correct option is 3. Aluminum typically has a charge of +3 in ionic compounds, and the reason behind this is the number of valence electrons in the outermost shell of the aluminum atom.

In ionic compounds, the charge of an element is determined by the number of valence electrons present in its outermost shell. The valence electrons are those that are involved in chemical bonding and they determine the reactivity of an atom. This gives aluminum an atomic number of 13 and an electron configuration of 1s²2s²2p⁶3s²3p¹.

In the case of aluminum, it has three valence electrons in its outermost shell, which means it can lose these three electrons to form a positively charged ion with a charge of +3. So, in ionic compounds, aluminum typically has a charge of +3.

Moreover, when aluminum loses these three valence electrons, it attains a noble gas configuration, which is a stable configuration that many elements strive to achieve.

Aluminum is a chemical element with the symbol Al and atomic number 13. It is a silvery-white, soft, non-magnetic, and ductile metal in the boron group. It is the third most abundant element after oxygen and silicon and the most abundant metal in the Earth's crust. It is commonly used in various applications due to its low density, high strength-to-weight ratio, and good corrosion resistance.

Therefore, option 3 is the correct reason for Al having +3 charge.

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Answer:

4

Explanation:

4

Answer:

two H atoms

Explanation:

is the answer I think

Most volcanoes occur at plate boundaries because the tectonic plates are moving away from one another and the Earth's crust is pulled apart to create a new pathway for rising hot magma to flow on to the surface while the  two types of boundaries which are most common are:

This is referred to as a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface.

It occurs at the plate boundaries because Earth's crust is pulled apart to create a new pathway for rising hot magma to flow on to the surface and the types which are most common are divergent plate boundaries which includes two tectonic plates that are moving away from each other and convergent plate boundaries which involves two tectonic plates moving toward each other.

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The subscript 4 in [Cu(NH3)4]2+ indicates the B)coordination number of Cu2+.

Coordination number refers to the number of ligands attached to the central metal ion in a coordination complex. In the given complex, Cu2+ is the central metal ion and it is coordinated to four ammonia (NH3) ligands.

The subscript 4 in [Cu(NH3)4]2+ indicates the number of NH3 ligands attached to the Cu2+ ion, which is the coordination number of Cu2+. The oxidation number of Cu in this complex is +2, which is indicated by the Roman numeral II in the formula. Therefore, the correct answer is B.

The explanation for this is that oxygen has a higher electronegativity and a greater attraction for its valence electrons compared to boron, carbon, and sodium. This means that it requires more energy to remove an electron from oxygen, resulting in the formation of a cation.

To determine which element requires the most energy to remove a valence electron, we need to consider ionization energy. Ionization energy is the energy required to remove an electron from an atom or ion. In general, ionization energy increases from left to right across a period and decreases from top to bottom within a group on the periodic table.

Locate the elements on the periodic table. Boron, Carbon, Oxygen, and Sodium are in groups 13, 14, 16, and 1, respectively. Observe the ionization energy trends. Since ionization energy increases from left to right across a period, Oxygen in group 16 will have a higher ionization energy than Boron, Carbon, and Sodium. Consider the vertical trend. Ionization energy decreases from top to bottom within a group, but since all these elements are in the same period, this trend is not relevant for this comparison.
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Answer:

C3H6

Explanation:

Among all the given option, the correct option is option 4. The formula of given chemical compound is C\(_3\)H\(_6\).

The chemical symbols make up the molecular formula. Additionally, it includes a list of the molecule's constituent elements as well as numeric subscripts that indicate the number of atoms in each element. It is a method of displaying data on the chemical ratios.

The chemical formula has no words and does not have a chemical name. A formula is not the same as a complete chemical molecular formula, despite the fact that it may suggest certain basic chemical structures. The formula of given chemical compound is C\(_3\)H\(_6\). First, determine the molar mass formula. Then, divide the compound's molar mass by the expression for molar mass.

Therefore, the correct option is option 4.

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There are 23 atoms of Fe in a 55.845 gram. As a result, after dividing our mass of 239 grams by the iron formula mass of 55.84 grams per bole, formol equals after calculation.

Use the millimeters to mole formula to calculate the molecular weight n, of a substance with a given mass, m, (in grams) accurately. n = m / M, where M is the substance's molar mass also known as gram-molecular weight. a substance's molecular weight expressed as a mass in grams. Example: NaCl salt weighs 58.44 grams per gram-mole. American Meteorological Society, copyright 2022.

Number of Avogadro = 6.023 × 10²³. The products of every chemical reaction are measured using the Avogadro number. 1 mole of atoms, molecules, or particles is equal to 6.023 x 1023. Calculating the number of molecules is as follows: mole number = quantity of material / mass of one mole.

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There are 23 atoms of Fe in a 55.845 gram. As a result, after dividing our mass of 239 grams by the iron formula mass of 55.84 grams per bole, formol equals after calculation.

Use the millimeters to mole formula to calculate the molecular weight n, of a substance with a given mass, m, (in grams) accurately. n = m / M, where M is the substance's molar mass also known as gram-molecular weight. a substance's molecular weight expressed as a mass in grams. Example: NaCl salt weighs 58.44 grams per gram-mole. American Meteorological Society, copyright 2022.

Number of Avogadro = 6.023 × 10²³. The products of every chemical reaction are measured using the Avogadro number. 1 mole of atoms, molecules, or particles is equal to 6.023 x 1023. Calculating the number of molecules is as follows: mole number = quantity of material / mass of one mole.

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The chemical formula for cesium hydroxide is CsOH.

The chemical formula for cesium hydroxide is CsOH.

Cesium hydroxide is an inorganic compound that consists of the cesium cation (Cs+) and the hydroxide anion (OH-). It is a strong base, meaning it can accept protons (H+) from acids. The formula CsOH indicates that there is one cesium ion (Cs+) and one hydroxide ion (OH-) in each unit of cesium hydroxide.

Cesium hydroxide is a white solid that is highly soluble in water. When it dissolves in water, it dissociates into cesium ions and hydroxide ions, which are responsible for its basic properties.

As a strong base, cesium hydroxide is commonly used in organic synthesis and as a reagent in chemical reactions. It can be used to deprotonate acidic compounds and initiate reactions that require a basic environment.

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The chemical formula for cesium hydroxide is CsOH. Cesium hydroxide consists of one cesium atom (Cs) and one hydroxide ion (OH-). The hydroxide ion consists of one oxygen atom (O) bonded to one hydrogen atom (H), and it carries a negative charge (-) due to the extra electron.

The cesium atom (Cs) is an alkali metal element located in Group 1 of the periodic table. It has a single valence electron, which it readily donates to achieve a stable configuration. The hydroxide ion (OH-) consists of one oxygen atom (O) and one hydrogen atom (H), covalently bonded together. The oxygen atom carries a partial negative charge due to its higher electronegativity, while the hydrogen atom carries a partial positive charge.

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2-Chloro-3-methyl-2-butene has 2 distinct 1H NMR signals due to the presence of two chemically equivalent allylic methylene protons.

These two protons will show up as a single singlet because they are chemically equivalent, meaning they have the same chemical environment and will have the same chemical shift.

This single singlet will appear at a chemical shift that is midway between the chemical shifts of the two allylic methylene protons.

The 1H NMR spectrum of 2-chloro-3-methyl-2-butene will also include a doublet of doublets due to the presence of two methine protons, and a triplet due to the presence of the methyl group.

Additionally, the presence of the chlorine atom will be observed as an upfield chemical shift due to its electron-withdrawing nature.

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The volume in liters of the given copper(II) fluoride solution is 30.3 L.To calculate the volume in liters of the given copper(II) fluoride solution.

We need to use the formula:

moles = concentration x volume

First, we need to convert the mass of copper(II) fluoride from milligrams to grams:

800. mg = 0.8 g

Next, we can calculate the number of moles of copper(II) fluoride:

moles = 0.0026 mol/L x V (where V is the volume in liters)
moles = (0.0026 mol/L) x V

We can now set up an equation to solve for V:

(0.0026 mol/L) x V = 0.8 g / 101.55 g/mol (the molar mass of copper(II) fluoride)

Simplifying the equation, we get:

V = (0.8 g / 101.55 g/mol) / 0.0026 mol/L
V = 30.29 L

Finally, we round our answer to three significant digits, giving us:

Volume = 30.3 L

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Answer:

number of protons in the atom

Explanation:

Everything else has something to do with neutrons or weight, which you cannot know from just the atomic number. The atomic number is how many protons are in an element

Answer:

K.E. = 1/2 m v2

Explanation:

kinetic energy = half mass × volume²

The value of Y in the formula when 2.8g of silicon react with 3.2g of oxygen, is 2

The numbers in the formula of a compound determine the ratio of moles of each element in the compound.

Given:

2.8g of silicon

3.2g of oxygen

[relative atomic mass of silicon is 28 and of oxygen is 16]

For silicon, n = 2.8 ÷ 28 = 0.1    (n= moles)

For oxygen, n = 3.2 ÷ 016 = 0.2

For the mole ratio, we divide each value of the moles by the smallest number of moles calculated which is 0.1 moles.

For Silicon = 0.1/0.1 = 1

For Oxygen = 0.2/0.1 = 2

Taking the mole ratio as their subscripts.

The ratio of Si:O is 1:2

SiO\(_{2}\) is the formula of silicon dioxide.

The value of y in the formula SiO\(_{Y}\) is 2 when 2.8g of silicon react with 3.2g of oxygen.

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Answer:

I prob can bc I'm a bad b*tch

lol

Answer:

Slytherine

Explanation:

I hope you have a wonderful rest of your day!!!! :)

The compound that would form a precipitate in water is  BaSO4.

option d.

BaSO4 (barium sulfate) would form a precipitate in water because it is classified as an insoluble compound according to most solubility charts. When a compound is considered insoluble, it means that it has a very low solubility in water, resulting in the formation of solid particles or precipitate when dissolved in water.

In the case of BaSO4, it does not readily dissociate into ions in water and remains as solid particles, causing it to precipitate.

On the other hand, a. KCI (potassium chloride), b. NaOH (sodium hydroxide), and c. (NH4)2S (ammonium sulfide) are soluble compounds in water. They dissociate into ions and form homogenous solutions when dissolved in water, without forming a precipitate.

It's worth noting that solubility can vary depending on factors such as temperature and concentration, so it's always important to consult a solubility chart or reference for accurate and up-to-date information on specific compounds.option d.

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answer below

Explanation:

Warm fronts often bring stormy weather as the warm air mass at the surface rises above the cool air mass, making clouds and storms. warm fronts move more slowly than cold fronts because it is more difficult for the warm air to push the cold, dense air across the Earth's surface.

hope this helps! have a great day!

Explanation:

hope the picture above helps u to understand:)

One way to climb from the bottom of a flight of stairs to the top in O(n2) time is to use a brute force approach. This involves considering every possible combination of steps that can be taken at each stair and keeping track of the minimum number of steps needed to reach the top.

This can be done by recursively considering all possible steps from each stair and choosing the minimum among them. While this approach may not be the most efficient, it guarantees that the solution will be found in no more than O(n2) time.

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Magnesium

First shell has 2

Second has 8

Third has 2

AnswU GOT THIS!!!!!!!!!!!!!

Explanation:

Answer:

protein??

Explanation:

im not sure, but I could be wrong!!

Answer:

7500000cm/hr

Explanation:

6km=600000cm

24min=24/60hr=0.4hr

so, according to the question

6k/24km=600000cm÷0.4hr

=1500000cm/hr

therefore in 5 hours we can run:

5×1500000cm/Hr

=7500000cm/hr

A person can run "7,500,000 cm" in 5 hours.

According to the question,

A person can run 6 km in 24 minutes, i.e.,

= \(\frac{6}{24} \ km/min\)

and,

5 hours = 300 minutes

then,

→  A person can run in 5 hours:

= \(\frac{6}{24}\times 300\)

= \(\frac{1800}{24}\)

= \(75 \ km\)

By converting km into cm, we get

= \(7500000 \ cm\)

So the above is the right answer.

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If the acid structure induces (H+) release or accept e- or if it is present in higher concentration it affects the pH by reducing it.

Acid and base are two terms that are often encountered in chemistry. The acid-base theory is a theory that explains the chemistry behind these substances. This theory explains how acids and bases react with each other to form a neutral solution, among other things. It also explains the concept of pH.

The pH of a solution is a measure of how acidic or basic it is. The pH of a solution is determined by the concentration of hydrogen ions (H+) in the solution. The higher the concentration of hydrogen ions, the lower the pH, and the more acidic the solution. Conversely, the lower the concentration of hydrogen ions, the higher the pH, and the more basic the solution.

The pH of a solution can be influenced by several factors. These factors include the structure of the acid or base, the initial concentration of the acid or base, and the conditions under which the reaction takes place.

For example, if the structure of the acid is such that it can easily donate hydrogen ions, the acid will be a strong acid. Strong acids have a low pH because they have a high concentration of hydrogen ions. On the other hand, if the structure of the acid is such that it can't donate hydrogen ions easily, the acid will be a weak acid.

Weak acids have a higher pH than strong acids because they have a lower concentration of hydrogen ions. Similarly, the concentration of the acid or base will also affect the pH. If the concentration of the acid or base is high, the pH will be low. Conversely, if the concentration of the acid or base is low, the pH will be high. This is because the concentration of hydrogen ions in the solution is directly proportional to the concentration of the acid or base.

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Answer:

C: the repulsion of electrons and electrons.

Explanation:

According to the VSEPR theory, molecular shapes adjust so that the electrons can be as far apart as possible due to electrons repelling each other, which would mean the only possible answer is C.

Answer:

allylcyclopentane.

it may have other names but this is the most oniwn for this compound