The partial pressure of argon gas, making up 40% of a mixture is 325 torr. What is the total pressure of the mixture in kPa?

The flow of electric current through a circuit is caused by a **difference in electrical potential energy**, also known as voltage.

Voltage is created by the separation of positive and negative charges, and this separation produces an electric field that can move electrons through a conductor. When there is a path or circuit for electrons to follow, the electric field can cause them to move from a region of high electrical potential (positive terminal) to a region of low electrical potential (negative terminal), which results in the flow of electric current. Therefore, a potential difference is required to create the electric current flow through a circuit.

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Answer:

Potential energy to kinectic energy

Explanation:

Answer:

I think its learned behavior

Explanation:

because animals don't learn how to migrate, they just know already.

Answer:

(CH3COO)2 + redP + Cl2 → ClCH2COOH + HCl

Explanation:

This is an example of halogenation of carboxylic acids at alpha carbon atom. In this reaction, red phosphorus and chlorine are treated with carboxylic acids having alpha hydrogen atom followed by hydrolysis to form alpha chloro carboxylic acid.

Answer:

True

Explanation:

Ex. People against vaccines tend to believe crazy theories over facts because they think they'll end up brainwashing them.

0.6156 grams of water can form from the given mixture of hydrogen and oxygen.

Mass of water = moles of water × molar mass of water

             = 0.0342 mol × (18 g/mol)    [Molar mass of water = 18 g/mol]

             = 0.6156 g

To determine the amount of water that can form from the given mixture of hydrogen and oxygen, we need to consider the balanced chemical equation for the reaction between hydrogen and oxygen to form water.

The balanced equation for this reaction is:

2H2 + O2 -> 2H2O

From the equation, we can see that 2 moles of hydrogen react with 1 mole of oxygen to produce 2 moles of water.

Given:

Mass of hydrogen = 0.0346 g

Moles of oxygen = 0.0171 mol

To find the limiting reactant, we need to compare the moles of hydrogen and oxygen and determine which one is present in a smaller amount.

Moles of hydrogen = mass of hydrogen / molar mass of hydrogen

                   = 0.0346 g / (2 g/mol)    [Molar mass of hydrogen = 2 g/mol]

                   = 0.0173 mol

Since the moles of hydrogen (0.0173 mol) are greater than the moles of oxygen (0.0171 mol), oxygen is the limiting reactant.

Now, we can calculate the moles of water formed from the limiting reactant (oxygen).

Moles of water = moles of oxygen × (2 moles of water / 1 mole of oxygen)

              = 0.0171 mol × (2 mol/ 1 mol)

              = 0.0342 mol

Finally, to find the mass of water formed, we can use the molar mass of water.

Mass of water = moles of water × molar mass of water

             = 0.0342 mol × (18 g/mol)    [Molar mass of water = 18 g/mol]

             = 0.6156 g

Therefore, 0.6156 grams of water can form from the given mixture of hydrogen and oxygen.

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The number of buckets we need to separate these chemicals is 3.

Intermolecular force of the attraction is defined as the attraction by which two atoms or two molecules combine to form a molecule or matter. This force is basically attractive in nature. Intermolecular forces are the forces of attraction or repulsion which acts between neighboring particles. It acts between atom and ions also. The intermolecular force usually varies for solid, liquid and gaseous matter.

Here, C₂H₆ have London dispersion forces

CH₃F have Dipole-Dipole forces

CH₄ have London dispersion forces

NH₃ have hydrogen bonding

Hence, in order to separate these chemicals we need 3 buckets (different kinds of imf).

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A biology student examining an imperfect flower would typically find  reproductive structures, incomplete floral parts, or observe the plant to be monoecious or dioecious.

A biology student would notice any or all of the following traits in an imperfect flower:
Reproductive organs: Imperfect flowers are ones that lack neither stamens or carpels (male and female reproductive components). They only have one sort of reproductive structure. Incomplete floral components: Imperfect flowers could have floral parts that are missing. They may be devoid of petals or sepals, or they may have reduced or changed versions of these features.Plants that are monoecious or dioecious: Imperfect blooms are prevalent in plants that are monoecious or dioecious.Corn (which has separate male nad female flowers on the tassel nad female blossoms on the ear), squash (which has separate male & female flowers on the same plant), as willows (which have separate male nad female catkins) are examples of plants with imperfect blooms.

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Answer:

the periodic table is the table of contents of the elements

Correct op tion is B, sigma C−C bonds =3, sigma C−H bonds =2+1+3=6 , pi C−C bonds =1+1=2

The overlapping of atomic orbitals distinguishes sigma and pi bonds from other varieties of covalent connections. Atomic orbitals colliding together create covalent bonds. Sigma bonds are created when two atomic orbitals overlap one another head-to-head, whereas pi bonds are created when two atomic orbitals overlap one another laterally. The coaxial overlapping of the two orbitals with identical energies results in the formation of sigma bonds (). The single bonds are typically sigma bonds. The lateral overlapping of two orbitals with similar energies results in the formation of pi bonds (). One sigma bond and one pi bond are found in a double bond, while two sigma bonds and two pi bonds are found in a triple bond. Sigma bonds have orbitals that are aligned with the internuclear axis, as opposed to pi bonds, which have orbitals that are perpendicular to the internuclear axis. As a result, sigma bonds have greater effective orbital overlap. The sigma bond is stronger than the pi bond because to the large difference in orbital overlap.

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The ion in seawater that serves as a buffer is HCO₃⁻ (bicarbonate ion). Option D is correct.

Seawater is a complex mixture of various dissolved salts and ions, including sodium (Na⁺), chloride (Cl⁻), calcium (Ca²⁺), and bicarbonate (HCO₃⁻).

A buffer is the solution which resists changes in pH when an acid or base is added to it. It consists of a weak acid and its conjugate base, or a weak base and its conjugate acid. In the case of seawater, the bicarbonate ion (HCO₃⁻) acts as a buffer.

HCO₃⁻ can act as both a weak acid and its conjugate base. It can donate a proton (H⁺) to act as an acid or accept a proton to act as a base. This ability to accept or donate protons helps maintain the pH of seawater within a relatively narrow range.

When an acid is added to seawater, the bicarbonate ion (HCO₃⁻) can accept the excess protons and convert into carbonic acid (H₂CO₃). This conversion helps to reduce the increase in acidity and prevent a drastic decrease in pH.

Therefore, HCO₃⁻ in seawater acts as a buffer, helping to stabilize and maintain the pH of the water despite the addition of acids or bases.

Hence, D. is the correct option.

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The correct answer is c. CO2, as carbon dioxide is the gas released during the reaction between hydrochloric acid and limestone. Option C

In the chemical reaction between hydrochloric acid (HCl) and limestone (CaCO3), the balanced equation is:

CaCO3(s) + 2 HCl(aq) → CaCl2(aq) + CO2(g) + H2O(l)

From the equation, we can see that one of the products is CO2 (carbon dioxide) gas. Therefore, the identity of the gas released when hydrochloric acid is poured on limestone is carbon dioxide (CO2).

Carbon dioxide is a colorless and odorless gas that is commonly produced in various chemical reactions and natural processes. In this reaction, when hydrochloric acid reacts with the calcium carbonate present in limestone, it forms calcium chloride (CaCl2), water (H2O), and carbon dioxide (CO2). The effervescence or fizzing observed is due to the release of carbon dioxide gas.

The calcium chloride and water formed in the reaction remain in the aqueous (liquid) state. However, the carbon dioxide gas is released as a product and can be observed as bubbles or a gas escaping from the reaction mixture.

Therefore, the correct answer is c. CO2, as carbon dioxide is the gas released during the reaction between hydrochloric acid and limestone. Option C

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Answer:

It is possible she could get one.

Explanation:

To solve this problem we need to convert 98.3 kilometers/hour to miles/hour.

In other words, we convert km to mi, to do so we multiply 98.3 km by a conversion factor, putting the unit we want to have in the numerator, and the unit we want to convert in the denominator:

Given that the little old lady is doing 61 miles/hour, she could get a speeding ticket.

To make 200 ml of 0.05 M NaCl solution, you would need:

0.05 M * 200 ml = 0.01 moles of NaCl

So, the amount of NaCl needed would be 0.01 moles * 56.44 g/mol = 0.56 g

Process:

The solution is now ready to use.

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Answer:

the first option, tasting a pasta sauce after adding a new ingredient.

Explanation:

tasting a pasta sauce after adding a new ingredient is not an observation because there is no qualitative or quantitative data to be taken from that experience.

Heterogeneous nucleation and subsequent planar growth allows the generation of a dendritic structure in cast metals, the given statement is true because dendritic structures are common in cast metals, particularly those that solidify quickly.

Dendrites are formed when liquid metal solidifies and develops in a non-uniform manner as a result of the directional growth of individual crystal grains from the nucleation site. Heterogeneous nucleation can occur on solid surfaces like mould walls, where dendrite formation happens in casting processes with an external mould. In the case of a metal casting, the first solidified metal, referred to as the "seed", serves as a heterogeneous nucleation site from which the dendrite grows.

The seed will continue to grow dendritically in all directions until it reaches the casting's outside edge as the metal begins to solidify. This leads to the development of a dendritic structure. Example: Pure aluminum solidifies in the form of dendrites under ordinary circumstances, which is a classic example of dendritic growth in metal solidification. So therefore the given statement is true because dendritic structures are common in cast metals, particularly those that solidify quickly.

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The molar mass of the gas, given that 3.25 g of the gas occupied 2.56 L is 30.66g/mol

To obtain the molar mass of the gas, we shall first obtain the number of mole of the gas. This can be obtained as follow:

PV = nRT

0.95 × 2.56 = n × 0.0821 × 280

Divide both sides by (0.0821 × 280)

n = (0.95 × 2.56) / (0.0821 × 280)

n = 0.106 mole

Haven obtain the mole of the gas, we shall determine the molar mass of the gas as follow:

Molar mass = mass / mole

Molar mass of gas = 3.25 / 0.106

Molar mass of gas = 30.66g/mol

Thus, the molar mass of the gas is 30.66g/mol

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In terms of the energy change in the reaction, the negative value indicates that the reaction is exothermic as the reaction releases 1560.74 kJ of energy for every mole of C2H6 that reacts with 7/2 moles of O2.

The model of chemical energy changes is given below:

Balanced chemical equation:

C2H6 + 7/2 O2 → 2CO2 + 3H2O

Now, to calculate the energy change in the reaction, we will use a table of enthalpy values. The enthalpy change for each of the reactants and products is given in the table below:

Reactants:

C2H6: -84.68 kJ/mol

O2: 0 kJ/mol

Products:

CO2: -393.51 kJ/mol

H2O: -285.83 kJ/mol

The energy change in the reaction can be calculated using the formula:

ΔH = ∑(products) - ∑(reactants)

ΔH = [2(-393.51 kJ/mol) + 3(-285.83 kJ/mol)] - [-84.68 kJ/mol + 7/2(0 kJ/mol)]

ΔH = -1560.74 kJ/mol

Therefore, the energy change in the reaction is -1560.74 kJ/mol.

To create a model of the energy change in the reaction, we can use an energy level diagram. In this diagram, the energy of the reactants is shown on the left, the energy of the products is shown on the right, and the activation energy is shown as a barrier between them.

The energy level diagram for this reaction is shown below:

Reactants (C2H6 + 7/2 O2)

                |

                |

       Activation energy

                |

                |

Products (2CO2 + 3H2O)

As shown in the diagram, the reactants have a higher energy level than the products, and the activation energy is required to get the reaction started.

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Increasing the pressure in the system would favor the forward reaction in the equilibrium, which is the production of Ni and CO gas.

According to Le Chatelier's principle, when a system at equilibrium is subjected to a change in pressure, it will shift to the direction that reduces the effect of the change.

In this case, increasing the pressure would cause the system to shift towards the side with fewer moles of gas, which is the side with solid Ni and CO gas.

Therefore, increasing the pressure would result in a higher rate of nickel production, as more Ni(CO)4 would be converted to Ni and CO gas. However, it is important to note that increasing the pressure beyond a certain point may not result in any significant changes in the rate of the reaction, as the equilibrium constant for this reaction may be reached at high pressures.

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Answer:

Explanation:

C2H4 + O2 → CO2 + H2O

eqn is unbalanced - balancing by counting no. of C n H atoms

C=2 n H=4 in one C2H4

so the reaction will form two CO2 + two H2O

counting no. of O atoms: 2*2 + 2*1

=4+2

Answer:6

Explanation:

Step 1

The reaction involved here:

3 FeO + 2 Al => 3 Fe + AI2O3 (Don't forget to completed it and balance it)

---------------

Step 2

Data provided:

125 grams of FeO react with 25.0 grams of AI

--

Data needed:

The molar masses of:

FeO) 71.8 g/mol

Al) 27.0 g/mol

Fe) 55.8 g/mol

---------------

Step 3

The limiting reactant:

By stoichiometry,

3 FeO + 2 Al => 3 Fe + AI2O3

3 x 71.8 g FeO ----- 2 x 27.0 g Al

125 g FeO ----- X

X = 125 g FeO x 2 x 27.0 g Al/3 x 71.8 g FeO

X = 31.3 g Al

For 125 g of FeO, 31.3 g of Al is needed, but there is 25.0 g of Al, so the limiting reactant is Al.

-------------

Step 4

The amount of Fe produced:

By stoichiometry,

3 FeO + 2 Al => 3 Fe + AI2O3

2 x 27.0 g Al ---- 3 x 55.8 g Fe

25.0 g Al --- X = 77.5 g Fe

Answer: 77.6 g Fe (the closest value)

The net ionic equation for the reaction between Mg(NO3)2 and aqueous ammonia. It shows the formation of the solid product, magnesium hydroxide (Mg(OH)2), which appears as a light white, wispy precipitate.

When a 0.1 M solution of Mg(NO3)2 is mixed with a limited amount of aqueous ammonia, a white, wispy solid forms, indicating a reaction has occurred. The net ionic equation for this reaction can be represented as follows:

Mg(NO3)2 (aq) + 2 NH3 (aq) + 2 H2O (l) → Mg(OH)2 (s) + 2 NH4NO3 (aq)

To determine the net ionic equation, we first identify the spectator ions, which are the ions that don't participate in the formation of the solid product. In this case, the spectator ions are NO3- and NH4+. Thus, we can remove these ions from the equation:

Mg2+ (aq) + 2 NH3 (aq) + 2 H2O (l) → Mg(OH)2 (s)

This is the net ionic equation for the reaction between Mg(NO3)2 and aqueous ammonia. It shows the formation of the solid product, magnesium hydroxide (Mg(OH)2), which appears as a light white, wispy precipitate.

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Answer: B.

Explanation:

Trust me already took the quiz on it its B.

Answer:

Yes its B

Explanation:

1) Draw the reactants in their anti-periplanar conformation.

2) Eliminate one of the hydrogens, forming a double bond between the two remaining atoms.

3) Consider the stereochemistry of the reaction to determine if the double bond is in a cis or trans conformation.

4) The resulting product is the major product formed from the elimination reaction.

The reaction you have provided is an elimination reaction, in which an alkene product is formed. The products of this reaction will depend on the reactants provided and the conditions used for the reaction. In particular, the major product of this reaction will be the one that follows the Zaitsev’s rule. When considering the stereochemistry of the reaction, the anti-periplanar conformation of the reactants must be taken into account.

The major product of the following elimination reaction will be an alkene with the double bond formed in the anti-periplanar conformation that follows Zaitsev's rule.

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Hi im here to help!

Answer: a chemical reaction occurred because a new substance was formed with new properties!

Explanation: when u mix glue water and borax it forms into a new substance which is a chemical reaction

The students concluded after mixing the water and glue that;

A chemical change took place because a new substance was formed.

We are told that the students mixed 20 mL of white glue and 20 mL of water in a cup. These two reactants are different and we are told that 15 mL of borax solution was stirred into the mixture.

Now, the three reactants are different and they combined to form a substance that they could roll around their hands.

For them to be able to roll the product around their hands means that a new substance was formed.

In conclusion, we can say a chemical change took place as 3 different substances combined to form a new product which is not reversible like physical change.

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Answer

A compound made of two ions.

Explanation

A binary compound is a compound formed from two different elements. There may or may not be more than one of each element.

For a binary ionic compound, a metal will always be the first element in the formula, while a nonmetal will always be the second.

Hence, a binary ionic compound is a compound made of two ions.

Answer: approximately 18.75 mL of 3.0 M HNO₂ solution can be completely neutralized by 75 mL of 1.5 M Mg(OH)₂ solution.

Explanation:

To determine the volume of 3.0 M HNO₂ solution that can be neutralized by 75 mL of 1.5 M Mg(OH)₂ solution, we can set up an equation based on the stoichiometry of the balanced chemical equation.

The balanced chemical equation for the neutralization reaction between HNO₂ and Mg(OH)₂ is:

2 HNO₂ + Mg(OH)₂ → Mg(NO₂)₂ + 2 H₂O

From the equation, we can see that it takes two moles of HNO₂ to react with one mole of Mg(OH)₂.

First, let's calculate the number of moles of Mg(OH)₂ present in 75 mL of 1.5 M solution:

Number of moles of Mg(OH)₂ = Volume (in L) × Concentration (in mol/L)

= 75 mL × (1 L / 1000 mL) × 1.5 mol/L

= 0.1125 mol

Since the stoichiometry ratio is 2:1 (HNO₂:Mg(OH)₂), we can conclude that 0.1125 moles of Mg(OH)₂ can neutralize 0.1125/2 = 0.05625 moles of HNO₂.

Now, let's determine the volume of 3.0 M HNO₂ required to contain 0.05625 moles:

Volume (in L) = Number of moles / Concentration (in mol/L)

= 0.05625 mol / 3.0 mol/L

≈ 0.01875 L

Finally, we convert the volume from liters to milliliters:

Volume (in mL) = Volume (in L) × 1000

≈ 0.01875 L × 1000

≈ 18.75 mL

Answer:

1.2353 mol

Explanation: