2Al +6HCl → 2AlCl3 + 3H2 then solve the problem below. Find the number of moles of Al used to produce 2.5 moles of H2

Answer:

Explanation:

The density of a substance can be found by using the formula

\(density = \frac{mass}{volume} \\\)

From the question

mass = 500 g

volume = 67 mL

We have

\(density = \frac{500}{67} \\ = 7.462686\)

We have the final answer as

Hope this helps you

The tundra ecosystem is most vulnerable to human activity.

This ecosystem is characterized by plains which lacks trees,

very low temperature and poor nutrients. It is harsh and few

humans inhabit this region.

It is most vulnerable to humans as a result of the high oil

exploration, drilling of mineral resources and hunting that takes

place in the region.

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Voltage describes how much current can flow. The relationship between voltage and current is further illustrated below.

A voltage is defined as the pressure that pushes the electric current through a conducting material. It is measured in volts.

The relationship between voltage and current is that increase in the Voltage of a electric circuit results to increase in the current.

Therefore, Voltage describes how much current can flow. The relationship between voltage and current is further illustrated below.

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the masses expect for nitrogen gas. Let's say x is the mass of nitrogen gas.

X=7g reaction of given the equation representing .

Nitrogen is important to the chemical industry. It is used to make fertilisers, nitric acid, nylon, dyes and explosives. To make these products, nitrogen must first be reacted with hydrogen to produce ammonia. This is done by the Haber process.

Every year people are killed by breathing “air” that contains too little oxygen. Because 78 percent of the air we breathe is nitrogen gas, many people assume that nitrogen is not harmful. However, nitrogen is safe to breathe only when mixed with the appropriate amount of oxygen.

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Answer:

B

Explanation:

The enthalpy of fusion of a substance, also known as heat of fusion is the change in its enthalpy resulting from providing energy, typically heat, to a specific quantity of the substance to change its state from a solid to a liquid, at constant pressure.

Answer:fg

Explanation:

Answer:

C. Helium Atom

Explanation:

Helium has less mass than hydrogen, proton, and electron

When calcium oxalate dissolves in water, it dissociates into calcium ions (Ca2+) and oxalate ions (C2O42-).

This is because, when ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process represents a physical change known as dissociation.

Therefore, the correct chemical equation for the dissolution of calcium oxalate in water is CaC204 (s) → Ca2+ (aq) + C2O42- (aq) and ions produced are  calcium ions, Ca₂⁺ which are positively charged, and oxalate ions, C₂O₄²⁻ which are negatively charged.

Hence, the correct answer is Option d) Ca2++C2O42-

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The mass of hydrogen in one mole of aluminum hydroxide Al(OH)₃ is 3.03 g (Option D)

From the formula of Al(OH)₃, 1 mole consist of

We can determine the mass of hydrogen as follow:

Mole = mass / molar mass

Cross multiply

Mass = mole × molar mass

Mass of H = 3 × 1.01

ass of H = 3.03 g

Thus, the mass of hydrogen in the compound is 3.03 g

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Answer: 3.03g

Explanation:

Answer:

HNO3 & H2SO4

Explanation:

HNO3 is Nitric acid and H2SO4 is Sulphuric acid

Answer:

A cloud of gas and dust

Explanation:

Put dissimilar, an interstellar cloud is a denser-than-average region of the interstellar medium. Interstellar cloud is a universal call given to a gathering of gas, plasma, and dust in our and other galaxies.

Answer: A rearrange and form new substances with new properties.

Explanation: Got it right on Edgenuity

Answer:

a

Explanation:

got it right

Only possible with alkaline earth metals

Let's see an example

\(\\ \sf\longmapsto X(OH)_2\)

The elements are

Option C is correct

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Answer: 12N IT IS JUST MATH

Answer:

1.이산화탄소

2.낮은

3.높은

4.쓰레기

5.빠른

6.산소

7입자

Explanation:

내가 틀렸다면 나를 수정하는 데 도움이되기를 바랍니다.

The correct ranking of compounds in order of increasing keq for this equilibrium is Acetone < Propanone < Benzaldehyde.

The correct ranking of compounds in order of increasing keq for the equilibrium of each of the carbonyl compounds with HCN to produce cyanohydrins is

Acetone < Propanone < Benzaldehyde.

In the above reaction, the cyanide ion acts as a nucleophile and attacks the carbonyl carbon atom in the carbonyl compound to form an intermediate compound. Then the intermediate compound formed by the reaction between HCN and the carbonyl compound undergoes an intramolecular rearrangement to form cyanohydrin.Based on the stability of intermediate compound formed, the order of increasing stability is as follows:

Acetone < Propanone < Benzaldehyde.

Since the keq is directly proportional to the stability of the intermediate, the order of increasing keq for the equilibrium of each of the carbonyl compounds with HCN to produce cyanohydrins is

Acetone < Propanone < Benzaldehyde.

The correct ranking of compounds in order of increasing keq for this equilibrium is

Acetone < Propanone < Benzaldehyde.

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The concentration of a sample of wine that contains 15 mL of ethyl alcohol in 200 mL of wine is 7.5 % v/v.

given that :

volume of solute = 15 mL

volume of solution = 200 mL

percent volume (v/v)% = (volume of solute/ volume of solution) × 100 %

percent volume (v/v)% = (15 mL / 200 mL ) × 100 %

percent volume (v/v)%  = 0.075 × 100 %

percent volume (v/v)%  = 7.5 % v/v.

Thus, The concentration of a sample of wine that contains 15 mL of ethyl alcohol in 200 mL of wine is 7.5 % v/v.

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\( \: \: \: \: \: \: \)

\( \: \: \: \: \: \)

So,

Given the following reaction:

We want to find the number of moles of water that can be produced from the reaction of 2.0 moles of hydrogen gas is reacted with 2.5 moles of oxygen gas.

First of all, we need to check which of both reactants is the limiting reactant because that reactant is going to generate the product.

To find the limiting reactant, we're going to use the coefficients of the reaction. The equation tells us that per each two moles of H2, one mol of O2 is needed to react. So,

We have 2 moles of H2, but we need 5 moles of H2 to react according to the reaction.

Since we have less amount of what we really need, then, H2 is the limiting reactant.

Now, the moles of water produced will be:

The answer is 2 moles of H2O.

Answer: Sunspots are caused by disturbances in the sun's magnetic field welling up to the photosphere, the sun's visible "surface". The powerful magnetic fields in the vicinity of sunspots produce active regions on the sun, which in turn frequently spawn disturbances such as solar flares and coronal mass ejections.

Explanation:

We can use the combined gas law to solve this problem:

(P1 x V1) / T1 = (P2 x V2) / T2

where P1, V1, and T1 are the initial pressure, volume, and temperature, respectively, and P2 and V2 are the final pressure and volume, respectively.

Since the problem doesn't mention any changes in temperature, we can assume it remains constant. Therefore, we can simplify the equation to:

P1 x V1 = P2 x V2

Plugging in the given values, we get:

(12.3 atm) x (8.5 L) = (7.6 atm) x V2

Solving for V2, we get:

V2 = (12.3 atm x 8.5 L) / 7.6 atm

V2 = 13.77 L

Therefore, the volume will be 13.77 L when the pressure is adjusted to 7.6 atm.

Answer:The law of conservation of matter says that matter cannot be created or destroyed. In chemical equations, the number of atoms of each element in the reactants must be the same as the number of atoms of each element in the products. ... There are two oxygen atoms in the reactants and two atoms of oxygen in the product.

Explanation:

The molar solubility of \(Al(OH)_3\) in 0.2 M \(Al(NO_3)_3\) is approximately \(2.68 * 10^-^1^1 M.\)

To determine the molar solubility of \(Al(OH)_3\) in 0.2 M \(Al(NO_3)_3\) , we must take into account the normal ion effect. The presence of \(Al^3^+\) ions from \(Al(NO_3)_3\) will affect the solubility of \(Al(OH)_3\).

The balanced equation for the dissolution of \(Al(OH)_3\) in water is:

\(Al(OH)_3(s)\)⇌ \(Al^3^+(aq) + 3OH^-(aq)\)

The solubility product expression for \(Al(OH)_3\) is

\(K_s_p\) = \([Al^3^+]. [OH^-]^3\)

The molar solubility can be established using an equilibrium table, the \(K_s_p\) of \(Al(OH)_3\) is \(2.0 * 10^-^3^2\)

So,

[\(Al^3^+\)] = 0 (from 0.2 M \(Al(NO_3)_3\))

[\(OH^-\)] = 0

At equilibrium:

\([Al^3^+]\) = x (change due to dissolution of \(Al(OH)_3\))

\([OH^-]\)= 3x (since the stoichiometric coefficient is 3 in the balanced equation)

Using the \(K_s_p\)expression:

\(K_s_p = [Al^3^+][OH^-]^3\)

\(2.0 * 10^-^3^2 = x * (3x)^3\\2.0 * 10^-^3^2 = 27x^4\)

\(x = \sqrt[3]{2.0 * 10^-32 / 27} \\x = 2.68 * 10^-^1^1\)

Therefore, the molar solubility of \(Al(OH)_3\) in 0.2 M \(Al(NO_3)_3\) is approximately \(2.68 * 10^-^1^1 M.\)

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In Sulfur Tetrachloride the formal charge of the sulfur atom is zero and in this, it forms four bonds and has one lone pair.

Sulfur tetrachloride, SCl₄, is a fascinating molecule because it exhibits some of the weird concepts in chemical bonding. Sulfur tetrachloride is an inorganic compound with the chemical formula SCl₄. It has simply been obtained as a precarious pale yellow solid. The corresponding SF₄ is a steady, helpful reagent. It melts with concurrent decomposition above -20°C. Its solid configuration is ambivalent. In distinction to this tetrachloride, SF4 is a neutral molecule.

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Answer:

Ammonium lauryl sulfate, like any other surfactant, makes a good base for cleansers because of the way it disrupts the hydrogen bonding in water. Hydrogen bonding is the primary contributor to the high surface tension of water. In hydrogen bonding with the water surrounding them.

"the number of ions produced by one formula unit of the electrolyte," refers to the van't Hoff factor (i) in an ideal solution of a strong electrolyte. It represents the extent of dissociation of the electrolyte into ions.

In an ideal solution of a strong electrolyte, the van't Hoff factor (i) represents the number of ions that are produced when one formula unit of the electrolyte dissociates completely in the solution. It is a measure of the extent of dissociation of the electrolyte.

For example, for a strong electrolyte such as sodium chloride (NaCl), when it dissolves in water, it completely dissociates into sodium ions (Na+) and chloride ions (Cl-). In this case, the van't Hoff factor (i) would be 2 because one formula unit of NaCl produces two ions (Na+ and Cl-).

Similarly, for other strong electrolytes, the van't Hoff factor (i) can be determined based on the number of ions produced per formula unit. It is important to note that for non-electrolytes or weak electrolytes, the van't Hoff factor (i) is typically less than 1, indicating partial dissociation or no dissociation in the solution.

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Answer:

Soil contains minerals such as Iron, Zinc, Nitrogen compounds, etc. that are all essential to sustaining life. It also holds water and makes it available for plants to use. Soil also contains ores from which we can extract metals such as iron, copper, gold, and aluminum.

(Hope this helps) Sky

The molar mass of calcium phosphate, when rounded to the closest tenth, is 310.18 g/mol.

To calculate the molar mass of calcium phosphate (Ca3(PO4)2), we need to add the atomic masses of each of the atoms in one mole of the compound.

The atomic masses are:

Ca (calcium): 40.08 g/mol

P (phosphorus): 30.97 g/mol

O (oxygen): 16.00 g/mol

There are three calcium atoms and two phosphate groups in one mole of calcium phosphate. Therefore, the molar mass is:

(3 x 40.08 g/mol) + (2 x (2 x 30.97 g/mol + 8 x 16.00 g/mol))

= 120.24 g/mol + 2 x (61.94 g/mol + 128.00 g/mol)

= 310.18 g/mol

Rounding to the nearest hundredth gives a molar mass of calcium phosphate of 310.18 g/mol.

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Answer:  Energy can  be involved in disconnecting or connecting atoms to each other as the energy is used to break the bonds between the atoms ,so the reaction could proceed.

Explanation: The statement can be well explained by the  Planck's quantum theory , which states -:

Hence, the given answer is based on the Planck's Quantum theory.

A. An element with the valence electron configuration 3s1 would form a monatomic ion with a charge of +1 In order to form this ion, the element will lose 1 electron from the 3s subshell.

B. If an element with the valence configuration 4s23d6 loses 2 electrons this electron would be removed from the 4s subshell.

Valence configuration 3s1 corresponds to sodium. The element with the above electron configuration is IRON. Iron is an element with atomic number 26. Atomic valence is also called valence. In chemistry, the property of an element determines how many other atoms an element's atoms can bond with.

Introduced in 1868, this term describes both the associativity and associativity numbers of common elements. A valence electron is an electron in the outermost shell or energy level of an atom. For example, oxygen has six valence electrons, two in the 2s subshell and four in the 2p subshell.

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