When an acid is diluted, what happens to the concentration of the solution?

Reverse the sign of the second equation, change the sign of the enthalpy and add. Option B

The enthalpy could be obtained by the use of the Hess law of constant heat summation. As such, we have a number steps and it is possible for use to obtain the enthalpy of the final reaction as shown by a series of manipulations.

By inspection, we can see that, if we desire to obtain the enthalpy of the final reaction as shown, then we have to reverse the sign of the second equation, change the sign of the enthalpy and add. Option B

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Answer:

The waters' temp increased

Explanation:

The temperature of the water in the swimming pool has increased due to the heat from the Sun. As a result, the particles in the water are moving faster and have a higher kinetic energy than in the morning.

The mass of the solid will be 114.7 g.

The density of a substance is given as the ratio of its mass and its volume.

Also, a solid will always displace its own volume in a liquid.

Mass of liquid solvent = 47.3 g

Density of liquid solvent = 0.865 g/mL

Recall that: density = mass/volume

Volume of liquid solvent = mass/density

                                     = 47.3/0.865

                                      = 54.7 mL

Volume of solid + liquid solvent = 90.0 mL

Volume of solid = 90.0 - volume of liquid solvent

                            = 90.0 - 54.7

                               = 35.3 mL

Density of solid = 3.25 g/mL

Mass of solid = density x volume

                       = 3.25 x 35.3

                          = 114.7 g

The mass of the solid is 114.7 g.

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Answer:

the particles of matter are arranged in different ways for the different states

Explanation:

because solid liquid and gas all three matters have different states for example the particles in a solid are closely packEd and form of movement is vibration

Answer:

A small amount of chemical splashes in Frank's eye. What should happen next? Frank should go to the eyewash station while his lab partner tells the teacher what happened.

Explanation:

Brainlist

Answer:

chu papi

Explanation:

Answer:

Br-CH2-CH(CH3)2-C(Cl)H-CH(CH3)2-CHO

Explanation:

The molecule has a total of 14 carbon atoms, 13 hydrogen atoms, and 1 bromine atom. The carbon atoms are arranged in a chain with a methyl group attached to the second carbon atom, a chlorine atom attached to the third carbon atom, and two methyl groups attached to the fourth carbon atom. The fifth carbon atom has a carbonyl group attached to it.

The molecule is an aldehyde, which means that it has a carbonyl group (C=O) at the end of the chain. The carbonyl group is polar, and the oxygen atom has a partial negative charge. The hydrogen atom has a partial positive charge. This polarity makes the aldehyde group susceptible to nucleophilic attack.

The bromine and chlorine atoms are both electrophilic, which means that they have a partial positive charge. This makes them susceptible to nucleophilic attack.

The methyl groups are non-polar and do not have any significant reactivity.

The molecule is a chiral molecule, which means that it has a mirror image that is not superimposable on itself. This is because the carbon atom with the carbonyl group is attached to four different groups.

The molecule is a liquid at room temperature and has a strong odor. It is used in a variety of products, including perfumes, flavorings, and plastics.

She said that the exposure to the radiation in the microwave would have cooked the animal's internal organs. She said: 'It is a horrific case in the fact that the death of the cat would have been prolonged and it is unimaginable what it would have gone through taking some time to die.

The molar mass of MgCrO4 is approximately 140.30 g/mol.

To determine the molar mass of MgCrO4 (magnesium chromate), we need to calculate the sum of the atomic masses of each individual element in the compound.

The chemical formula MgCrO4 indicates that the compound consists of one magnesium atom (Mg), one chromium atom (Cr), and four oxygen atoms (O).

The atomic masses of the elements can be found on the periodic table:

Magnesium (Mg) has an atomic mass of approximately 24.31 g/mol.

Chromium (Cr) has an atomic mass of around 51.99 g/mol.

Oxygen (O) has an atomic mass of about 16.00 g/mol.

Now, we can calculate the molar mass of MgCrO4 by summing up the atomic masses of each element, considering the respective subscripts:

Molar mass = (Atomic mass of Mg) + (Atomic mass of Cr) + 4 × (Atomic mass of O)

Molar mass = (24.31 g/mol) + (51.99 g/mol) + 4 × (16.00 g/mol)

Molar mass = 24.31 g/mol + 51.99 g/mol + 64.00 g/mol

Molar mass ≈ 140.30 g/mol

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According to Arrhenius definition of acids, \(NH4^+\) is an acid.

According  to Arrhenius  definition of acids and bases, acid is any substance that produces hydrogen ion in solution as its only positive ion.

Following this definition, let us now consider what happens when \(NH4^+\) is introduced into a water;

\(NH4^+\)(aq)-------> NH3(aq) + \(H^+\)(aq)

Hence, according to Arrhenius definition of acids, \(NH4^+\) is an acid.

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Answer:

The answer is C or 3

Explanation:

I took the assignment

Answer:

3 or C on edge

Explanation:

Answer:

Sugar is a polar compound , in the solid state of it Hydrogen bond strongly binds the molicules of sugar together. Being a non polar solvent and low polarity difference between Cl and C atom C—Cl bond in CCl4 is unable to form hydrogen bond. That's why sugar can't be soluble in CCl4.

Explanation:

It is expected at 1.05 atm the solubility increases if compared to the solubility at 0.222 atm.

In general, an increase in pressure leads to an increase in solubility. In the same way, a decrease in pressure will decrease solubility.

Considering the pressure increased, the most likely result is for the solubility to proportinally increase.

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Answer:

Plates at our planet's surface move because of the intense heat in the Earth's core

Explanation:

Hopefully this helps, I believe in you! ^^

Answer/Explanation:

movement can be cause by the intense heat in the earth's core, which causes molten rock in the mantle layer to move.  it moves in a pattern called 'convection cell' which can form when the warm material rises, then cools, and eventually sink down.  then the process repeats (cooled, warms up and rises.. etc..)

I hope this was what you were kinda looking for:) - T

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Approximately 766.08 grams of oxygen are required to completely react with 240g of C₂H₆.

To determine the amount of oxygen required to completely react with 240g of C₂H₆ (ethane), we need to set up a balanced chemical equation for the combustion of ethane.

The balanced equation for the combustion of ethane is as follows:

C₂H₆ + O₂ → CO₂ + H₂O

From the balanced equation, we can see that the stoichiometric ratio between C₂H₆ and O₂ is 1:3. This means that for every one mole of C₂H₆, three moles of O₂ are required for complete combustion.

To calculate the amount of oxygen required, we need to convert the given mass of C₂H₆ to moles using its molar mass, and then use the stoichiometric ratio to determine the moles of O₂ required. Finally, we can convert the moles of O₂ back to grams using the molar mass of oxygen.

The molar mass of C₂H₆ is calculated as follows:

(2 x atomic mass of carbon) + (6 x atomic mass of hydrogen)

(2 x 12.01 g/mol) + (6 x 1.01 g/mol) = 30.07 g/mol

Now, we can proceed with the calculation:

Calculate the moles of C₂H₆:

moles of C₂H₆ = mass of C₂H₆ / molar mass of C₂H₆

moles of C₂H₆ = 240 g / 30.07 g/mol ≈ 7.98 mol

Determine the moles of O₂ using the stoichiometric ratio:

moles of O₂ = moles of C₂H₆ x (3 moles of O₂ / 1 mole of C₂H₆)

moles of O₂ = 7.98 mol x 3 ≈ 23.94 mol

Convert moles of O₂ to grams:

mass of O₂ = moles of O₂ x molar mass of O₂

mass of O₂ = 23.94 mol x 32.00 g/mol = 766.08 g

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Answer:

the maximum safe operating temperature the engineer should recommend for this reaction is 616 °C  

Explanation:

Given the data in the question;

First we calculate the Volume of the steel cylinder;

V = πr²h

radius r = Diameter / 2 = 27 cm / 2 = 13.5 cm

height h = 32.4 cm

so we substitute

V = π × ( 13.5 cm )² × 32.4 cm

V  = π × 182.25 cm × 32.4 cm

V = 18550.79 cm³  

V = 18.551 L

given that; maximum safe pressure P = 3.10 MPa = 30.5946 atm

vessel contains 0.218kg or 218 gram of carbon monoxide gas

molar mass of carbon monoxide gas is 28.010 g/mol

so

moles of carbon monoxide gas n = 218 gram /  28.010 g/mol = 7.7829 mol

we know that;

PV = nRT

solve for T

T = PV / nR

we know that gas constant R = 0.0820574 L•atm•mol⁻¹ K⁻¹

so we substitute

T = ( 30.5946 × 18.551 ) / ( 7.7829 × 0.082 )

T = 567.5604 / 0.6381978

T = 889.317387 K

T = ( 889.317387 - 273.15 ) °C

T = 616.167 ≈ 616 °C  { 3 significant digits }

Therefore, the maximum safe operating temperature the engineer should recommend for this reaction is 616 °C  

Answer:

hey what up

Explanation:

Answer:

if 5.3 moles of carbon dioxide is produced in the combustion of propane, 1.77 moles of oxygen would have reacted in the reaction.

Explanation:

To determine the number of moles of oxygen that reacted in the combustion of propane, you can use the balanced chemical equation for the reaction:

C3H8 + 5 O2 -> 3 CO2 + 4 H2O

In this equation, one mole of propane reacts with five moles of oxygen to produce three moles of carbon dioxide and four moles of water. If you know the number of moles of carbon dioxide produced in the reaction, you can use the balanced equation to determine the number of moles of oxygen that reacted.

For example, if 5.3 moles of carbon dioxide is produced in the reaction, you can use the balanced equation to determine the number of moles of oxygen that reacted:

5.3 moles CO2 / 3 moles CO2/mole O2 = 1.77 moles O2

The volume of the acid that we are going to need in this case is 27000 mL.

We know that we have to know the reaction equation as this is the first step to solve the problem that we have here;

We know that;

CaCO3 + 2HCl → CaCl2 + H2O + CO2

Then we have that;

Molarity of the acid = Antilog (-1.55)

= 0.028 M

Number of moles of the base;

38 g/100 g/mol

= 0.38 moles

If 1 mole of the base reacts with 2 moles of the acid;

0.38 moles of the base reacts with 0.38 * 2/1

= 0.76 moles

Then;

Number of moles = Concentration * volume

Volume = Number of moles/Concentration

= 0.76/ 0.028

= 27 L or 27000 mL

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Answer:

a

Explanation:

bonding is chemical

A chemicals change includes bond making or breaking. The reaction between two atoms or molecules is their chemical property. Thus bonding with oxygen in air is a common chemical property of elements.

A change in which a substance undergo chemical bond making or breaking and forming new products. Whereas, a physical change does not involve these bond breaking or formation instead a phase change occurs there. Such as conversion of solids to liquids.

All the elements in the periodic table have their characteristic chemical and physical properties. Metallic shining is a physical property of metallic elements and floats in water describes the density of that element which is a physical property.

Similarly, boiling and melting are physical properties and they do not include any bond formation or breaking of the element.

The reaction with oxygen in air called oxidation forming their oxidised product is a chemical change. Thus, option A is correct.

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Answer:

3ZnCl2 + 2(NH4)3PO4 → Zn3(PO4)2 + 6NH4Cl

Explanation:

Zinc Chloride + Tribasic Ammonium Phosphate = Zinc Phosphate + Ammonium Chloride

Reaction Type

Double Displacement (Metathesis)

Reactants

Zinc Chloride - ZnCl2

Zinc(II) Chloride Zinc Chloride, Anhydrous Dichlorozinc Butter Of Zinc Zinc Chloride Zn-65

Molar Mass of ZnCl2 Oxidation State of ZnCl2

Tribasic Ammonium Phosphate - (NH4)3PO4

Ammonium Phosphate

Molar Mass of H12N3O4P Oxidation State of H12N3O4P

Products

Zinc Phosphate - Zn3(PO4)2

Zinc(II) Phosphate

Molar Mass of O8P2Zn3 Oxidation State of O8P2Zn3

Ammonium Chloride - NH4Cl

Amchlor Ammoneric Ammonium Muriate Darammon Sal Ammonia Sal Ammoniac Salammonite Salmiac

Molar Mass of ClH4N Oxidation State of ClH4N

Answer:

Gas D

Explanation:

liters at 30 °C

Answer: A

Explanation: I quizzed

The equilibrium constant, which indicates how far a chemical process progresses, is a thermodynamic quantity.

The equilibrium constant is a ratio of the concentrations (or partial pressures) of the products to the concentrations (or partial pressures) of the reactants.

1) The equilibrium constant is;

Keq = 1/(3.5) * (1.5)^2

Keq = 0.13

2) 0.15 = [0.25]/1 * [CO2]

[CO2] = [0.25]/0.15

[CO2] =1.67

3) Ksp = [Mg^+] [Cl^-]^2

4 * 10^-2 = [Mg^+] *  [3.5 * 10^-3]^2

[Mg^+] = 4 * 10^-2/ [3.5 * 10^-3]^2

= 3.3 * 10^-5 M

4) Ksp = x^2

Ksp = (2 * 10^-3)^2

= 4 * 10^-6

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Based on the Law of Conservation of Mass, the mass of products form when baking soda decomposes is 168 g/mole.

The law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as the system's mass cannot change, so quantity can neither be added nor be removed.

From the equation of NaHCO3 → Na₂CO3 + H₂O + CO₂ , we have

Mass of baking soda = 2 x molar mass

Molar mass of NaHCO₃ = 84.007 g/mole

Mass of baking soda = 2 x 84.007 g/mole

Mass of baking soda =  168.014 g/mole=  168 g/mole

Therefore, based on the Law of Conservation of Mass, the mass of products form when baking soda decomposes is 168 g/mole.

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Answer:

1.389 moles

Explanation:

We are given that

Given mass of ammonium=25.0 g

We have to find the  number of moles in 25.0g of ammonium.

The chemical formula of ammonium \(NH^{+}_4\)

Molar mass of N=14, Molar mass of H=1

Molar mass of ammonium (NH4+)=14+4(4)=18 g/mol

We know that

Number of moles=Given mass/Molar mass

Using the formula

Number of moles of ammonium=\(\frac{25}{18}\)moles

Number of moles of ammonium=1.389 moles

Hence, the number of moles in 25.0g of ammonium=1.389 moles

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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Explanation:

We have to perform the following substraction:

4.3 x 10² - 7.0 × 10² = ?

Since both numbers have the same order of magnitude we can directly substract them.

4.3 - 7.0 = -2.7

So the answer to our operation is:

4.3 x 10² - 7.0 × 10² = -2.7 × 10²

Answer: -2.7 × 10²

Answer:  84.56 L is the answer.

Explanation:

Answer:

84.6

Explanation:

I took the test