If 15.0 mL of 12.0 M H3PO4 reacts with 100.0 mL of 3.50 M of Ba(OH)2 , which substances is the limiting reactant?

2 H3PO4 + 3 Ba(OH)2 -> 6 H2O + BA3 ( PO4 )2

If 15.0 ML Of 12.0 M H3PO4 Reacts With 100.0 ML Of 3.50 M Of Ba(OH)2 , Which Substances Is The Limiting

Answers

Answer 1

Use the formula stated below

[tex]\boxed{\sf Molarity=\dfrac{Moles\:of\:solute}{Volume\:in\:L}}[/tex]

So

#H_3PO_4

No of moles

[tex]\\ \tt\Rrightarrow n=0.015(12)=0.18moles[/tex]

#Ba(OH)_2

[tex]\\ \tt\Rrightarrow n=0.1(3.5)=0.35mol[/tex]

Barium hydroxide is more

Hence H_3PO_4 is the limiting reagent

Answer 2

Answer:

hope it's helpful to you

If 15.0 ML Of 12.0 M H3PO4 Reacts With 100.0 ML Of 3.50 M Of Ba(OH)2 , Which Substances Is The Limiting

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We can confirm that the energy is being used for a biological process to remove waste known as excretion.

What is excretion?

In biology, excretion is a metabolic process in which organisms discard waste and other by-products of metabolism. This process is essential for organisms to maintain homeostasis.

Therefore, we can confirm that energy is being used for a biological process to remove waste known as excretion.

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Elements has physical and chemical properties most similar to silicon?

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Germanium (Ge) has properties that are similar to silicon.

Make a prediction about what will happen in this chemical reaction.

1. Add about 5 mL of Copper (II) sulfate solution into a small beaker.
2. Add a small bundle of steel wool (iron).
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Since iron is more reactive than copper, when steel wopl is placed in a solution of copper (II) sulfate solution into a small beaker, it dissolves and copper metal is produced.

What is a displacement reaction?

A displacement reaction is one in which a more reactive element displaces another from its compound.

Reactive metals displace less reactive metals from their solutions.

Iron is a more reactive metal than copper and will displace copper from a solution of its salt.

Therefore, when steel wool is placed in a solution of copper (II) sulfate solution into a small beaker, the iron dissolves and copper metal is produced.

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3. How many moles of solute are present in a 2300 mL solution of 0.68 M MgSO.?​

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There are 1.56 moles of solute present in a 2300 mL solution of 0.68M MgSO4.

How to calculate number of moles?

The number of moles of a substance can be calculated by using the following formula:

molarity = no. of moles / volume

According to this question, a volume of 2300 mL solution is contained in 0.68 M MgSO4. The number of moles is calculated as follows:

no of moles = 0.68M × 2.3

no. of moles = 1.56

Therefore, there are 1.56 moles of solute present in a 2300 mL solution of 0.68M MgSO4.

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What is the main chemical component present in striking surface of a matchbox?

A. Potassium chlorate

B. Phosphorus

C. Potassium

D. Graphite​

Answers

Answer:

Phosphorus

Explanation:

Actually that's red Phosphorus

The matchstick contains potassium chlorate at topOn reaction between these when we slides them white Phosphorus is formed which burns the match sticks

Answer:

Option B. ( Phosphorus)

Explanation:

Here, we want to select the option which is the main component present in the striking surface of a matchbox

The correct choice here is phosphorus

Red phosphorus which is an allotrope of phosphorus finds use in this particular case. It is the main chemical component present in the striking surface of a matchbox.

Hope this helps!

If you have any queries please ask.

Fe2O3 (s) +3CO (g) ----> 2Fe (l) + 3CO2 (g)
How many moles of Fe2O3 must react to produce 262 mol of Fe?

Answers

The answer is 131, it is mole to mole ratio

Which acid should be stored in plastic containers rather than in glass ones?

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Answer:

sulphuric acid and nitric acid

Explanation:

The acids that should be stored in plastic containers rather than in glass ones are hydrofluoric acid, phosphoric acid, sulfuric acid, etc.

What are acids?

Acids are those solutions that are sour in taste and have lower pH to 7.

Hydrofluoric acid is highly corrosive, made up of hydrogen and fluorine.

Phosphoric acid is an important oxygen of phosphorus.

Thus, the acids that should be stored in plastic containers rather than in glass ones are hydrofluoric acid, phosphoric acid, sulfuric acid, etc.

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136 grams of barium sulfate is used to make a 2.5 M solution. How many liters of water are needed?


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Answer:

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Draw the alkyl bromide(s) you would use in a malonic ester synthesis of ethyl 2-methyl-4-pentenoate

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The structure of the alkyl bromides used in a malonic ester synthesis of ethyl 2-methyl-4-pentenoate are as drawn in the attached image.

Ethyl 2-methyl-4-pentenoate by Malonic ester synthesis.

The malonic ester synthesis is a chemical reaction characterized by the alkylation of diethyl malonate or a similar ester of malonic acid at the carbon alpha (directly adjacent) to both carbonyl groups, and subsequently converted to a substituted acetic acid.

Hence, it follows from the structure of Ethyl 2-methyl-4-pentenoate that the alkyl bromides used are Ethyl bromide and methyl bromide.

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The structure of alkyl bromide that would be used in a malonic ester synthesis of ethyl 2-methyl-4-pentenoate are ethyl bromide and methyl bromide.

What is alkyl bromide?

When halogens such as Br, Cl, I, attched to the sp3 carbon atom of alkyl group, they called alkyl halides.

Here, bromide is attached to an alkyl group.

Ethyl bromide and methyl bromide are the alkyl halides used in synthesis of ethyl 2-methyl-4-pentenoate

Thus, ethyl bromide and methyl bromide are the alkyl bromides.

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For many Arrhenius acid base reactions (e.g., NaOH HCl, or KOH HNO3) the enthalpy change is the same regardless of which acid and which base are used. Why do you think this is so

Answers

Answer:

that's because

Explanation:

as far as my knowledge is concerned

HCl(g) + H2O ⇄ H3O+ (aq) + Cl– (aq)

or, more simply (and truer to the original theory):

HCl(g) ⇄ H+ (aq) + Cl– (aq) or HCl(aq)

Generic Formula & Molecular Geometry of o3

Answers

Answer:

We use the following formula as given below Use the formula below to find the lone pair on the oxygen atom of the SO3 molecule. L.P (O) = V.E (O) – N.A (S-O) Lone pair on the terminal oxygen atom in SO3 = L.P (O)

Explanation:

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Answers

Answer:

The first agrument.

Explanation:

Because only heat can be transfered. Thats why if you put something hot in a refridgerator the heat energy will go off in the fridge and powers the cold energy. Im pretty sure this is right this is what my teachers tought me so i hope they right

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Thermohaline circulation that occur in the ocean part that flows across sea surface help to supply heat to polar regions.

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The thermohaline circulation refer to a section and region of the ocean circulation which is majorly driven by heat gradient and freshwater that flows across the sea surface and also from the mixture of heat and salt that occur at the inside part of the ocean.

Therefore, Thermohaline circulation help to supply heat to polar regions.

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A 56kg skydiver jumps from the helicopter at
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The jumper's potential energy at a height of 1524 meters above the ground is equal to 836,371.2Joules.

Given the following data:

Mass of ball = 56 kilograms.Height = 1524 meters.Acceleration due to gravity = 9.8 [tex]m/s^2[/tex]

How to calculate potential energy.

Mathematically, potential energy is given by this formula:

[tex]P.E = mgh[/tex]

Where:

m is the mass.h is the height.g is acceleration due to gravity.

Substituting the given parameters into the formula, we have;

[tex]P.E = 56 \times 9.8 \times 1524[/tex]

P.E = 836,371.2Joules.

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An acetylene tank has a volume of 390.0 L. It is stored at a temperature of 23.5 °C and has a
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Considering the ideal gas law,  there are 279.42 moles of acetylene in the tank.

Definition of ideal gas

Ideal gases are a simplification of real gases that is done to study them more easily. It is considered to be formed by point particles, do not interact with each other and move randomly. It is also considered that the molecules of an ideal gas, in themselves, do not occupy any volume.

Ideal gas law

An ideal gas is characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them constitutes the ideal gas law, an equation that relates the three variables if the amount of substance, number of moles n, remains constant and where R is the molar constant of gases:

P×V = n×R×T

Moles of acetylene

In this case, you know:

P= 1765 kPa= 17.4192 atm (being 101.325 kPa= 1 atm)V= 390 Ln= ?R= 0.082 [tex]\frac{atmL}{molK}[/tex]T= 23.5 °C= 296.5 K (being 0 °C= 273 K)

Replacing in the ideal gas law:

17.4192 atm× 390 L = n×0.082 [tex]\frac{atmL}{molK}[/tex]× 296.5 K

Solving:

[tex]n=\frac{17.4192 atmx 390 L}{0.082 \frac{atmL}{molK}x296.5 L}[/tex]

n= 279.42 moles

Finally, there are 279.42 moles of acetylene in the tank.

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In the titration of 50. 0 mL of 0. 400 M HCOOH with 0. 150 M LiOH, how many mL of LiOH are required to reach the equivalence point

Answers

The volume of the 0.15 M LiOH solution required to react with 50 mL of 0.4 M HCOOH to the equivalence point is 133.3 mL

Balanced equation

HCOOH + LiOH —> HCOOLi + H₂O

From the balanced equation above,

The mole ratio of the acid, HCOOH (nA) = 1

The mole ratio of the base, LiOH (nB) = 1

How to determine the volume of LiOH Molarity of acid, HCOOH (Ma) = 0.4 MVolume of acid, HCOOH (Va) = 50 mLMolarity of base, LiOH (Mb) = 0.15 MVolume of base, LiOH (Vb) =?

MaVa / MbVb = nA / nB

(0.4 × 50) / (0.15 × Vb) = 1

20 / (0.15 × Vb) = 1

Cross multiply

0.15 × Vb = 20

Divide both side by 0.15

Vb = 20 / 0.15

Vb = 133.3 mL

Thus, the volume of the LiOH solution needed is 133.3 mL

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what is not a molecule

Answers

Answer:

Single atoms of elements are not molecules.

Explanation:

A single oxygen, O, is not a molecule. When oxygen bonds to itself (e.g., O2, O3) or to another element (e.g., carbon dioxide or CO2), molecules are formed

Which element cannot be the central atom of a lewis structure?.

Answers

Answer:

Hydrogen

Explanation:

Hydrogen can never be central atom despite its low electronegativity

Please help! How many isotopes are in arsenic?

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Answer:

Arsenic (33As) has 33 known isotopes and at least 10 isomers.

Arsenic has 33 isotopes

Using the data below, what conclusion could you draw?
Car
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Based on the data provided, the mass of the object is inversely proportional to acceleration and directly proportional to the time taken to cover the distance.

How does the mass of a object affect its acceleration?

Given that the force applied on an object is constant, the acceleration of the object is inversely proportional to the mass of the object.

According to the Newton's second law of motion, the acceleration of an object is inversely proportional to the mass of the object and directly proportional to the force and takes place in the direction of the applied force.

Based on the data provided, the more mass the car has, the more time it takes to complete the distance.

Therefore, it can be concluded that the mass of the object is inversely proportional to acceleration and directly proportional to the time taken to cover the distance.

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The sum of the kinetic energies and potential energies of all of the molecules
in a substance is called the ___ energy of the substance.

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Answer:

The sum of the kinetic energies and potential energies of all of the molecules in a substance is called the thermal energy of the substance.

A container with a volume 2.0 l is filled with a gas at a pressure of 1.5 atm. by decreasing the volume of the container to 1.0 l, what is the resulting pressure? type in your answer using the correct number of significant figures. remember to use the formula for boyle's law: p1v1 = p2v2 atm

Answers

Answer:

3.0 atm

Explanation:

got it right on edge after guessing 2 times

The resulting pressure of the gas after decreasing the initial volume is 3 atm.

What is Boyle's Law?

According to the Boyle's Law at constant temperature, pressure of the gas is inversely proportional to the volume of the gas:

P ∝ 1/V

For the given question required equation is:

P₁V₁ = P₂V₂, where

P₁ = initial pressure = 1.5 atm

V₁ = initial volume = 2 L

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V₂ = final volume = 1 L

On putting all these values on the above equation, we get

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Holly’s camp stove uses butane (C4H10). This fuel combusts in the presence of oxygen and forms water vapor and carbon dioxide as products. The enthalpy of this reaction is –2877.5 kJ per mole. Write the correct thermochemical equation for this reaction. What does this equation tell us about the reaction? How is a thermochemical equation different from other chemical equations?

Please help me! It is urgent!!

Answers

The thermochemical equation for the combustion of butane is:

C₄H₁₀(g) + 6.5 O₂(g) ⇒ 4 CO₂(g) + 5 H₂O(g)   ΔH = -2877.5 kJ

It informs us of the entalphy of the reaction and it includes the states of aggregation.

What is a thermochemical equation?

A thermochemical equation is a balanced stoichiometric chemical equation that includes the enthalpy change, ΔH.

Step 1: Write the balanced equation for the complete combustion of butane.

C₄H₁₀ + 6.5 O₂ ⇒ 4 CO₂ + 5 H₂O

Step 2: Write the thermochemical equation.

To the previous equation, we will add the enthalpy change and the states of agregation.

C₄H₁₀(g) + 6.5 O₂(g) ⇒ 4 CO₂(g) + 5 H₂O(g)   ΔH = -2877.5 kJ

The thermochemical equation for the combustion of butane is:

C₄H₁₀(g) + 6.5 O₂(g) ⇒ 4 CO₂(g) + 5 H₂O(g)   ΔH = -2877.5 kJ

It informs us of the entalphy of the reaction and it includes the states of aggregation.

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Why did mendeleev leave gaps in the periodic table?.

Answers

Answer:

Mendeleev left some gaps in his periodic table because he believed that in future more elements will be discovered.

Explanation:

"Mendeleev left gaps in his table to place elements not known at the time. By looking at the chemical properties and physical properties of the elements next to a gap, he could also predict the properties of these undiscovered elements."

Complete and balance the equation for the reaction of sodium with water.
Na+_H2O+ H2

Answers

2Na + 2H2O → 2NaOH + H2

The balanced equation

A mixture of h2 and water vapor is present in a closed vessel at 20.00°c. the total pressure of the system is 755.0 mmhg. the partial pressure of the water vapor 17.50 mmhg. what is the partial pressure of h2? type in your answer using the correct number of significant figures. mmhg

Answers

The partial pressure is the pressure exerted by a single gas in a volume of the mixture. The partial pressure of dihydrogen is 737.5 mmHg.

What is Dalton's law?

According to Dalton's law, the sum of partial pressure of non-reacting gases gives the total pressure of the system.

Given,

Total pressure = 755.0 mmHg

The partial pressure of water = 17.5 mmHg

The partial pressure of dihydrogen = ?

The partial pressure of dihydrogen is calculated as:

[tex]\begin{aligned}\rm p_{total} &= \rm p_{H_{2}O} + p_{H_{2}}\\\\755.0 &=\rm 17.5 + p_{H_{2}}\\\\&= 737.5 \;\rm mmHg\end{aligned}[/tex]

Therefore, the partial pressure of dihydrogen is 737.5 mmHg.

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Answer:

737.5

Explanation:

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Answers

Answer:

hydrogen is the first in periodic table

There is an extreme temperature difference between day and night in a desert during clear weather. However, even though the outside temperature drops greatly at night, the water in a swimming pool in the desert tends to remain warm. Use your knowledge of heat energy, specific heat, and heat transfer to explain these facts.

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Answers

Sand has a lower heat capacity hence it heats up easily and looses heat easily. On the other hand, water has a higher heat capacity and looses heat more slowly hence it remains warm at night.

What is heat transfer?

The transfer of heat refers to the movement of heat from one body to another. We should note that sand has a low specific heat capacity hence it is rapidly heated up in the day and looses heat quickly at night.

On the other hand, water has a high specific heat capacity hence it heat up slowly and also does not loose heat easily even when the surrounding temperature is much colder. As such, there is an extreme temperature difference between day and night in a desert during clear weather and the water in a swimming pool in the desert tends to remain warm even when the outside temperature drops greatly at night.

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