2 HCI + 1 Ca(OH)2 + 1 CaCl2 + 2 H20
If I start with 6.9 moles of Ca(OH)2, how many moles of H2O will be produced?

The balanced equation will be \(2NH_3 + 3I_2 -- > N_2I_6 + 3H_2\)

They are chemical equations that obey the law of conservation of atoms.

In other words, they are equations in which the number of atoms before and after reactions are the same.

Thus, the balanced equation for the reaction will be \(2NH_3 + 3I_2 -- > N_2I_6 + 3H_2\)

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The kind of chemical reaction that results in the formation of sodium chloride is a neutralization reaction.

Bases react to produce water and salt, which requires the interaction of H+ and OH- ions. A pH of 7 results from the neutralization of a potent acid and a potent base. A strong base neutralizing a weak acid will provide a pH result that is more than 7, while the neutralization of a strong acid and weak base will produce a pH result that is less than 7.

A solution is neutralized when equal amounts of acid and base combine to create salts. One mole of protons (H+) is equivalent to one mole of the base, and one mole of acid is equivalent to one mole of protons (H+) (OH-). N parts of acid will always neutralize N parts of the base because salts are created by neutralization reactions with comparable weight concentrations of acids and bases.

Therefore, the kind of chemical reaction that results in the formation of sodium chloride is a neutralization reaction.

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The volume of gas when the pressure is 45 psi is 2,833.33mL.

The volume of a substance can be calculated using Boyle's law equation as follows:

P₁V₁ = P₂V₂

Where;

According to this question, a tank of carbondioxide has a pressure of 850 psi and a volume of 150 mL. The volume can be calculated as follows:

850 × 150 = 45 × V

V = 127,500 ÷ 45

V = 2,833.33mL

Therefore, 2,833.33mL is the volume of the gas.

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Answer:

This states principle helps explain that an aircraft can achieve lift due to  the shape of its wings.

They wings are  shaped that way  so that that air flows faster over the top of the wing and slower underneath the wing .

In simple terms ;

Fast moving air equals low air pressure while slow moving air equals high air pressure

Explanation:

Answer:

If an atom is in column V (or 15), it will most likely gain 3 electrons to fulfill the octet rule.

Explanation:

The octet rule defines the property that atoms have to complete their last energy level with eight electrons to achieve stability through an ionic, covalent or metallic bond.

The pair of electrons that are transferred or gained belong to the last shell of the atom. If an atom is in column V (or 15), it means that it has 5 electrons in its last shell. So an atom in this group is more likely to gain 3 electrons to achieve stability than to lose the 5 electrons it has.

If an atom is in column V (or 15), it will most likely gain 3 electrons to fulfill the octet rule.

A.  Gain 3 electrons

The octet rule defines the property that atoms have to complete their last energy level with eight electrons to achieve stability through an ionic, covalent or metallic bond.

The pair of electrons that are transferred or gained belong to the last shell of the atom. If an atom is in column V (or 15), it means that it has 5 electrons in its last shell. So an atom in this group is more likely to gain 3 electrons to achieve stability than to lose the 5 electrons it has.

Thus, correct option is A.

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Answer: The minimum volume of the container must be 460.54 L.

Explanation:

Density is defined as the ratio of mass and volume of a substance.

\(\text{Density}=\frac{\text{Mass}}{\text{Volume}} \)           ......(1)

Given values:

Volume of water = 0.37 L = 370 mL               (Conversion factor: 1 L = 1000 mL)

Density of water = 1.00 g/mL

Putting values in equation 1, we get:

\(\text{Mass of water}=(1.00g/mL\times 370mL)=370g\)

The number of moles is defined as the ratio of the mass of a substance to its molar mass.

The equation used is:

\(\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}\) ......(2)

Given mass of water = 370 g

Molar mass of water = 18 g/mol

Putting values in equation 2, we get:

\(\text{Moles of water}=\frac{370g}{18g/mol}=20.56mol\)

At STP conditions:

1 mole of a gas occupies 22.4 L of volume

Applying unitary method:

20.56 moles of water will occupy = \(\frac{22.4L}{1mol}\times 20.56mol=460.54L\) of volume.

Hence, the minimum volume of the container must be 460.54 L.

Answer: Octane will be used completely.

Explanation:

To calculate the moles :

\(\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}\)    

\(\text{Moles of octane}=\frac{2.3g}{114g/mol}=0.0202moles\)

\(\text{Moles of oxygen}=\frac{12.4g}{32g/mol}=0.388moles\)

The balanced chemical reaction will be

\(2C_8H_{18}+25O_2(g)\rightarrow 16CO_2(g)+18H_2O(g)\)  

According to stoichiometry :

2 moles of octane require = 25 moles of \(O_2\)

Thus 0.0202 moles of octane will require=\(\frac{25}{2}\times 0.0202=0.2525moles\)  of \(O_2\)

Thus octane is the limiting reagent as it limits the formation of product and \(O_2\) is the excess reagent.  

Thus octane will be used completely.

To find out how many moles is 1.5x10^23 atoms of Carbon, we will use Avogadro's number, which is represented by 6.022x10^23 atoms or molecules per mol.

To convert from atoms to moles, divide the atoms by Avogadro's number.

So, now we can convert the numbers into proper form:

1.5x10^23 ---> 1.5E23

6.022x10^23 ---> 6.022E23

Then, we divide them.

1.5E23/6.022E23 = 0.24908

Round to nearest hundredth.

0.24908 --> 0.25

Therefore, there are 0.25 moles of carbon in 1.5E23 atoms of carbon.

Approximately 194.0 grams of glucose (C6H12O6) would be required to prepare a 5000 mL solution with a concentration of 0.215 M.

To determine the mass of glucose (C6H12O6) required to prepare a 0.215 M solution in 5000 mL, we need to use the formula:

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

First, let's convert the volume of the solution from milliliters (mL) to liters (L):

5000 mL = 5000/1000 = 5 L

Now, we can rearrange the formula to solve for moles of solute:

moles of solute = Molarity (M) x volume of solution (L)

moles of solute = 0.215 M x 5 Lmoles of solute = 1.075 mol

Since glucose (C6H12O6) has a molar mass of approximately 180.16 g/mol, we can calculate the mass of glucose using the equation:

mass of solute = moles of solute x molar mass of solute

mass of glucose = 1.075 mol x 180.16 g/mol

mass of glucose = 194.0 g (rounded to three significant figures)

Therefore, approximately 194.0 grams of glucose (C6H12O6) would be required to prepare a 5000 mL solution with a concentration of 0.215 M. It's important to note that the molar mass of glucose used in this calculation may vary slightly depending on the level of precision required.

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The concentration of H₂SO₄ solution is equal to 0.0480 M.

A neutralization reaction is described as a chemical reaction where acid and base react to produce respective salt and water. When a strong acid reacts with a strong base then the salt can be neutral.

When H₂SO₄ (a strong acid) reacts with NaOH, the resulting salt is Na₂SO₃  and water.

H₂SO₄  +  2 NaOH   →   Na₂SO₄  +   2H₂O

Given, the concentration of NaOH = 0.146 M

The volume of the NaOH = 14.85 ml = 0.01485 L

The number of moles of NaOH, n = M × V = 0.146 × 0.01485 = 0.00216 M

The volume of the  H₂SO₄ = 22.55 ml = 0.02255 L

The number of moles of  H₂SO₄, n = 0.00216/2 = 0.00108 mol

The concentration of H₂SO₄ =0.00108/0.02255 = 0.0480 M

Therefore, the molarity of  H₂SO₄ is 0.0480 M.

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The answer is 1ml. The answer is 1ml because of calibration of this graduated cylinder

Answer:

1 mL

Explanation:

According to your definition, it is the difference between marked spaces divided by the # of spaces between marked values.

Difference between 2 marked values: 5 mL

# Of Spaces between marked values: 5

Calibration: 5 mL / 5 mL = 1 mL

Answer:

1.5232 × 10^-6 grams

Explanation:

Answer:

c i think

Explanation:

Answer:

False, There are only a few strong acids, so many people choose to memorize them. All the other acids are weak

Explanation:

The most suitable choice is "likely" to convey the doubt or uncertainty regarding the boss's willingness to agree. Option B)

Based on the given context, the word that best fits the sentence is "likely."

The sentence implies that the speaker doubts the boss's willingness to agree with something. In this case, "likely" expresses the probability or possibility of the boss agreeing. It suggests that the boss is not expected to be receptive or open to the idea.

"Probable" implies a higher degree of certainty or likelihood, which may not be suitable in this context since the sentence indicates skepticism about the boss's agreement.

"Suitable" means appropriate or fitting, but it does not convey the sense of agreement or willingness.

"Talkative" refers to someone who is inclined to talk a lot, which is unrelated to the boss's agreement.

Therefore, the most suitable choice is "likely" to convey the doubt or uncertainty regarding the boss's willingness to agree. Hence option B) is correct.

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Answer:

False

Explanation:

Answer:

False

Explanation:

Electrons are the lightest particles of an atom with a mass aptoximate to zero

formular:

\({ \rm{ {}^{ \: \: \: 0} _{ - 1} e}}\)

hence mass number = 0

Answer:

whether the molecule is formed from at least two atoms

Explanation:

A feature that distinguishes an elemental molecule and a compound molecule is whether the molecules are formed from at least two atoms.

An elemental molecule is a molecule that contains two or more of the same kind of elements.

A compound molecule contains two or more different kinds of molecules.

A molecule is a unit of a compound that can represent such a compound.

Therefore, what distinguishes an elemental molecule from a compound molecule is whether a molecule forms from at least two atoms.

The following is involved in bonding between atoms is electron

There are four type of chemical bonds essential for life to exist and it is ionic bond, covalent bond, hydrogen bond, and Vander wall interaction and all of these are different kind of bond to play various role in biochemical interaction and the electron on the outermost energy level of the atom are called valence electron and the valence electron are involved in bonding one atom yo another

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Answer:

Answer is b gravity only

given compounds based on their relative Bronsted acidities are: H - F < H - Cl < H - NH2 < H - CH3 < H - SH

What is Bronsted acidities?

Bronsted acidities is a common concept in chemistry which describes the ability of an acid to donate a proton (H+) to a base. This is based on the Bronsted-Lowry Theory which states that an acid is a substance that donates a proton and a base is a substance that accepts a proton. Acids are typically characterized by their acidity constants, which measure the amount of acidity in a solution. Bronsted acidities can range from very weak (like citric acid) to very strong (like hydrochloric acid). Bronsted acidities can be measured in terms of pH, which is a measure of hydrogen ion concentration.

Therefore, given compounds based on their relative Bronsted acidities are: H - F < H - Cl < H - NH2 < H - CH3 < H - SH

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The mass of carbon dioxide, CO₂ dissolved in the alcoholic drink, given that 216.0 g of H₂O and 9.2 g of ethanol is bottled by it is 49.72 grams

First, we shall determine the mole of 216.0 g of H₂O and 9.2 g of ethanol. Details below:

For H₂O

Mole = mass / molar mass

Mole of H₂O = 216 / 18

Mole of H₂O = 12 moles

For C₂H₅OH

Mole = mass / molar mass

Mole of C₂H₅OH = 9.2 / 46

Mole of C₂H₅OH = 0.2 mole

Next, we shall obtain the mole of CO₂. Details below:

Mole fraction of H₂O = Mole of H₂O / total mole

Total mole = Mole of H₂O / Mole fraction of H₂O

Total mole = 12 / 0.9

Total mole = 13.33

But

Total mole = mole of H₂O + mole of C₂H₅OH + mole of CO₂

13.33 = 12 + 0.2 + mole of CO₂

13.33 = 12.2 + mole of CO₂

Collect like term

Mole of CO₂ = 13.33 - 12.2

Mole of CO₂ = 1.13 mole

Finally, we shall determine the mass of CO₂. Details below:

Mass = Mole × molar mass

Mass of CO₂ = 1.13 × 44

Mass of CO₂ = 49.72 grams

Thus, we can conclude that the mass of CO₂ dissolved is 49.72 grams

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Explanation:

they are closer and made of gas

Approximately 4.37 x 10^23 molecules of HCl would be required to form 34.52 g of MgCl₂.

To determine the number of molecules of HCl required to form 34.52 g of MgCl₂, we need to use the molar mass and stoichiometry of the balanced equation:

Mg(OH)₂(s) + 2 HCl(aq) → 2 H₂O(l) + MgCl₂(aq)

The molar mass of MgCl₂ is 95.21 g/mol.

First, we need to calculate the number of moles of MgCl₂ formed:

Moles of MgCl₂ = mass of MgCl₂ / molar mass of MgCl₂

Moles of MgCl₂ = 34.52 g / 95.21 g/mol

Moles of MgCl₂ = 0.363 mol

According to the balanced equation, the stoichiometric ratio between HCl and MgCl₂ is 2:1. Therefore, the moles of HCl required can be calculated as follows:

Moles of HCl = 2 * Moles of MgCl₂

Moles of HCl = 2 * 0.363 mol

Moles of HCl = 0.726 mol

To calculate the number of molecules, we need to use Avogadro's number, which is approximately 6.022 x 10^23 molecules/mol.

Number of molecules of HCl = Moles of HCl * Avogadro's number

Number of molecules of HCl = 0.726 mol * 6.022 x 10^23 molecules/mol

Number of molecules of HCl = 4.37 x 10^23 molecules

Therefore, approximately 4.37 x 10^23 molecules of HCl would be required to form 34.52 g of MgCl₂.

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To draw a Bohr Rutherford diagram for carbon-12, we would have the symbol C in the center, with 2 electrons in the first energy level and 4 electrons in the second energy level, arranged in pairs. Each energy level would be represented by a circle around the nucleus, with the appropriate number of electrons placed in the circles.

A Bohr Rutherford diagram is a visual representation of the electron arrangement in an atom. Carbon-12 has 6 protons and 6 neutrons, which means it has 6 electrons as well since it is a neutral atom. In a Bohr Rutherford diagram, the nucleus is represented by the symbol for the element and the protons and neutrons are shown as small circles inside the symbol. The electrons are represented as dots or circles around the symbol, in the order of increasing energy levels.

In the case of carbon-12, the first energy level can hold a maximum of 2 electrons, and the second energy level can hold a maximum of 8 electrons. Therefore, the first energy level will have 2 electrons, and the remaining 4 electrons will go in the second energy level.

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