A baseball is thrown a distance of 20 meters. What is its speed if it takes 1 second to cover the distance?

Answer:

The answer is C

Explanation:

I did it on edge

If the bonds of the product store 27 KJ more energy than the bonds of the reactants, It means the surroundings absorb 27 kj of energy from the reaction system Hence, Option (D) is the correct answer

An exothermic process releases heat, causing the temperature of the immediate surroundings to rise.

The bonds of the product store 27 KJ more energy than the bonds of the reactants, It means that energy has been absorbed by the surrounding as the product formed is more stable due to more stronger bond

This can be inferred from more stored energy with in the bonds and Thus, It is a exothermic reaction.Hence, Option (D) is the correct answer

Learn more about exothermic reaction here ;

https://brainly.com/question/9799465

#SPJ1

Answer:

0.9m/s

hope it helps....

A virtual lab that is used to test, and modify a device that releases thermal energy by chemical processes can use the given materials.

When the temperature rises, atoms and molecules begin to move more quickly and collide with one another, producing thermal energy (also known as heat energy). Thermal energy is the energy that results from a substance's temperature when it is heated. Thermal energy can be absorbed or released by chemical reactions to create changes in thermal energy.

By making nearby particles vibrate more quickly, reactions that release thermal energy warm the area around them. Thermal energy is produced via exothermic reactions, which use chemical energy. The environment receives this thermal energy once it has been released from the reaction products. Conduction, convection, and radiation are the three mechanisms through which thermal energy is transferred.

To learn more about exothermic reactions, visit:

https://brainly.com/question/30135580

#SPJ1

The number of grams of water that are produced from the moles of H₂ is 108.09 grams .

From the balanced chemical equation, we see that 2 moles of H₂ reacts to produce 2 moles of H₂O. Therefore, 1 mole of H₂ reacts to produce 1 mole of H₂O.

To find the number of moles of water produced from 6.00 moles of H₂, we can use the stoichiometry of the balanced chemical equation:

6.00 moles H₂ x (2 moles H₂O / 2 moles H₂) = 6.00 moles H₂O

So 6.00 moles of H₂ produces 6.00 moles of H₂O. To convert moles of water to grams, we need to use the molar mass of water:

Molar mass of H₂O = 2(1.008 g/mol) + 1(15.999 g/mol) = 18.015 g/mol

So, the mass of 6.00 moles of H₂O is:

6.00 moles H₂O x 18.015 g/mol = 108.09 g

Find out more on grams produced at https://brainly.com/question/20703641

#SPJ1

Evaporation, the liquid turns into a gas, but it still retains its original chemical composition. It is not a new substance, but rather a change in state from a liquid to a gas. This change is caused by the escape of molecules from the surface of the liquid into the air, which results in a decrease in the number of molecules in the liquid and an increase in the number of molecules in the air.

Therefore, evaporation is considered a physical change, not a chemical change. This is because the substance undergoing evaporation retains its original chemical composition, and the change is reversible by condensation, which is the process by which a gas turns into a liquid.

Evaporation is when a liquid turns into a gas at a temperature below its boiling point. It is a common phenomenon that occurs in everyday life, such as when water evaporates from a puddle or a wet towel.

The question of whether evaporation is a chemical or physical change can be confusing for some students. However, it is important to understand the difference between these two types of changes in order to understand evaporation.

A chemical change is a change that results in the formation of a new substance with different properties than the original substances. Chemical changes are often accompanied by a change in energy, such as a release or absorption of heat. Examples of chemical changes include burning, rusting, and digestion.

On the other hand, a physical change is a change in a substance's physical properties, such as its state, size, or shape, without forming a new substance. Physical changes are reversible, meaning that the original substance can be restored to its original state by reversing the change. Examples of physical changes include melting, freezing, and boiling.

Know more about evaporation: https://brainly.com/question/2013258

#SPJ11

Answer:

i think is probably A

Explanation:

because at constant temperature, the product of the pressure and volume of a given mass of and ideal gass in a closed system is always constant

Answer:

I believe the answer is A or D

Explanation:

I hope this helps you out!

Answer:

mass number = protons + neutrons.

Explanation:

Together, the number of protons and the number of neutrons determine an element's mass number: mass number = protons + neutrons. If you want to calculate how many neutrons an atom has, you can simply subtract the number of protons, or atomic number, from the mass number.

Nuclear fission is commonly used in nuclear power plants to generate electricity. The advantage of nuclear fusion is that it has the potential to produce large amounts of energy with minimal waste and no greenhouse gas emissions.

The half-life of a nuclide is crucial for a number of purposes, such as determining the age of archaeological artifacts and determining whether or not the storage of radioactive waste is safe.

The process of breaking up an atomic nucleus into two or more smaller nuclei and releasing a lot of energy is known as nuclear fission. The fission process uses energy to heat water and make steam, which drives turbines that turn into electricity.

The utilization of atomic splitting in power plants enjoys the benefit of delivering a lot of energy with somewhat modest quantities of fuel, and it doesn't discharge ozone depleting substances.

The process of combining two atomic nuclei into a single, more massive nucleus with the release of a significant amount of energy is known as nuclear fusion. This natural process is being investigated as a potential source of energy on Earth and in other stars.

The time it takes for half of a given amount of a radioactive substance to decay is known as the half-life of a nuclide. Scientists can calculate how much of a substance will remain after a certain amount of time by knowing its half-life, allowing them to make educated decisions regarding its safe handling.

For more such questions on Nuclear fission

https://brainly.com/question/3992688

#SPJ11

Answer:

1.053 grams of HCl.

Explanation:

1st) It is necessary to make sure that the equation is balanced:

From the balanced equation we know that 1 mole of Al(OH)3 react with 3 moles of HCl.

2nd) With the stoichiometry of the reaction and the molar mass of Al(OH)3 (78g/mol) and HCl (36.5g/mol) we can calculate the grams of HCl that can react with 0.750g:

So, 1.053 grams of HCl can react with 0.750g of Al(OH)3.

Answer:

Explanation:

A biography is a specialized form of history. It is an account of events based upon the example of one person's life. There are four basic types of biographies: historical fiction, academic, fictional academic, and the prophetic biography.

The mole ratio O₂ to NH\(_3\) in the reaction 4 NH\(_3\)+50\(_2\) → 4 NO + 6 H₂O is 5:4. Mole is one of the International System of Units.

A mole is merely a measuring unit. In reality, it is one of the International System of Units' seven foundation units (SI). When basically determines are insufficient, new units are created.

Chemical reactions frequently occur at levels that use grams would be inappropriate, but using actual figures of atoms/molecules/ions would also be misleading. As a result, scientists devised the mole could bridge the divide between extremely small and extremely huge numbers. The mole ratio O₂ to NH\(_3\) in the reaction 4 NH\(_3\)+50\(_2\) → 4 NO + 6 H₂O is 5:4.

Therefore, the mole ratio O₂ to NH\(_3\) in the reaction 4 NH\(_3\)+50\(_2\) → 4 NO + 6 H₂O is 5:4.

To learn more about mole, here:

https://brainly.com/question/14676971

#SPJ1

A Lewis structure is a diagrammatic representation that illustrates the arrangement of atoms, bonds, and lone pairs in a molecule. It is based on the concept of valence electrons.

In the Lewis structure, also known as the Lewis dot structure, the symbol A represents an element. Each dot in the structure represents a valence electron of the element. Valence electrons are the outermost electrons in an atom and are involved in chemical bonding.

In some cases, an element may have two unshared electrons, which means they are not involved in bonding with other atoms. These unshared electrons are depicted in the Lewis structure as two dots placed next to the element symbol A.

The presence of two unshared electrons can impact the reactivity and chemical behavior of the element, as these electrons are relatively more available for forming bonds or participating in chemical reactions. By representing the two unshared electrons with two dots, the Lewis structure provides a visual representation of the electron configuration of element A.

Learn more about Lewis structure here:

https://brainly.com/question/29603042

#SPJ11

Answer:

Lime

Explanation:

He shouldn't present his opinions as evidence.

What is the definition of a hypothesis?

A hypothesis is a tested assertion regarding the relationship between two or more variables or a theory put up to explain an observed occurrence in a scientific setting.

The complete population should be examined in order to ascertain whether a statistical hypothesis is accurate. As it is frequently impractical, researchers usually look at a random sample of the population. The statistical hypothesis is rejected if the sample data do not support it.

Making an experiment is the most typical method of testing a theory. A good experiment employs test subjects or establishes situations where you may determine whether your hypothesis appears to be true by assessing a wide array of of data (test results).

To learn more about hypothesis use link below:

https://brainly.com/question/606806

#SPJ1

a) The mass produced is 6.5 * 10^ -20 g.

b) The amount of water produced is 2.1 moles.

c) The mass of oxygen produced is 7.84 * 10^ -21 g.

d) The moles of ammonia needed is 0.56 moles.

Let us recall that we can be able to use the principles of stoichiometry to be able to obtain the parameters that we need to solve in this question.

a) Given that;

1 mole of oxygen would contain 6.02 * 10^23 molecules

x moles of oxygen would contain 8.46 x 10^ 2 molecules

x = 1.41 * 10^ -21 moles

If 4 moles of ammonia produces 4 moles of nitrogen IV oxide. Hence the mass of the nitrogen IV oxide produced

= 1.41 * 10^ -21 moles * 46 g/mol

= 6.5 * 10^ -20 g

b) Number of moles of ammonia = 23.7 g/17 g/mol

= 1.39 moles

If 4 moles of ammonia produces 6 moles of water

1.39 moles of ammonia produces 1.39 * 6/4

=2.1 moles

c) 1 mole of water would contain 6.02 * 10^23 molecules

x moles of water would contain  1.26 x 10^ 2 molecules

x = 2.1 * 10^ -22 moles

If 7 moles of oxygen produces 6 moles of water

x moles of oxygen would produce 2.1 * 10^ -22 moles of water

x = 2.45 * 10^-22 moles

Mass of the oxygen = 2.45 * 10^-22 moles * 32 g/mol

= 7.84 * 10^ -21 g

d) If 1 mole of oxygen occupies 22.4 L

x moles of oxygen occupies 22.05 L

x = 0.98 moles

If 4 moles of ammonia reacts with 7 moles of oxygen

x moles of ammonia would reacts with  0.98 moles of oxygen

x = 4 * 0.98/7

= 0.56 moles

Learn more about stoichiometry:https://brainly.com/question/9743981

#SPJ1

When table salt (sodium chloride which ionizes into Na and Cl) is added to alginate, a gel does not form and spherification does not occur. This happens because the salt only has one positive charge that neutralizes the negative charge in the alginate.

There are various types of Spherification. Spherification is the creation of small spheres with a thin film on the surface and a liquid center. The process of spherification is mostly used in molecular gastronomy to make small, flavorful balls of liquid ingredients that burst in the mouth when bitten into. The method involves a process of encapsulating liquid droplets in a sphere made of a gel-like film. This process requires sodium alginate (E401), a gel-forming ingredient that thickens the liquids.

Sodium alginate gelation occurs as a result of the mixture of an alginate solution with a cation solution that causes the solution to gel. The sodium ions present in the solution swap with calcium ions present in the cation solution, causing a gel to form. This occurs as a result of a chemical reaction known as cross-linking. When table salt is added to the alginate solution, a gel does not form and spherification does not occur since the salt only has one positive charge that neutralizes the negative charge in the alginate. Alginate requires a doubly charged cation to cross-link.

Learn more about cations at https://brainly.com/question/14309645

#SPJ11

When an element can both reduce and oxidize, it is said to be "disproportionate." This indicates that it must have at least two oxidation states: a decreased state and an oxidized state.

The element undergoing the disproportionation reaction must have at least three distinct oxidation states, and it must be less stable in one oxidation state from which it can be both oxidized and reduced to a relatively more stable oxidation.

Disproportionation occurs when one oxidation state becomes less stable in comparison to other oxidation states, either lower or higher.

Learn more about  disproportionation reaction :

brainly.com/question/13683302

#SPJ4

First jou adjust the Al, then the Br and last the K and you will see that the SO4 is adjusted.

Acid-base reactions can be either exothermic or endothermic. The given reactions (1), (2), and (3) are all exothermic. The reaction between NaOH and HCl (reaction 1) produces the most heat due to the combination of strong acid-strong base properties, resulting in a highly exothermic reaction.

Acid-base reactions can be either exothermic or endothermic, depending on the specific reaction and the nature of the acids and bases involved.

In general, when an acid and a base react to form a salt and water, the reaction can release or absorb heat. This is because the formation or breaking of chemical bonds during the reaction leads to a change in energy, resulting in either heat being released (exothermic) or heat being absorbed (endothermic).

Now, let's analyze the given reactions:

1. NaOH(aq) + HCl(aq) → NaCl(aq) + H₂O(l)

This reaction between sodium hydroxide (NaOH) and hydrochloric acid (HCl) is highly exothermic. It is a strong acid-strong base reaction, where the strong base NaOH reacts with the strong acid HCl to form the salt NaCl and water. This reaction releases a significant amount of heat.

2. NH₃(g) + HCl(g) → NH₄Cl(s)

This reaction between ammonia (NH₃) and hydrochloric acid (HCl) is also exothermic. Ammonia is a weak base, and HCl is a strong acid. When they react, they form the salt NH₄Cl, also known as ammonium chloride. The formation of the ionic solid NH₄Cl is an exothermic process, resulting in the release of heat.

3. NaOH(aq) + HC₂H₃O₂(aq) → NaC₂H₃O₂(aq) + H2O(l)

This reaction involves sodium hydroxide (NaOH) and acetic acid (HC₂H₃O₂). It is an example of a neutralization reaction, where the strong base NaOH reacts with the weak acid HC₂H₃O₂ to produce sodium acetate (NaC₂H₃O₂) and water (H₂O). This reaction is also exothermic, releasing heat.

Among the three given reactions, the reaction between NaOH and HCl produces the most heat. This is because it involves the reaction between a strong base and a strong acid, resulting in a highly exothermic reaction. The strong acidic and basic properties of HCl and NaOH, respectively, contribute to the vigorous release of heat during the reaction.

To learn more about exothermic refer here:

https://brainly.com/question/4345448#

#SPJ11

There will be 9 moles of NaNO3 and 3 moles of AlCl3 produced from this reaction.

What is mole?

The mole is the unit of amount of substance in the International System of Units which is a quantity amount of substance is a measure of how many elementary entities of a given substance are in an object or sample.

A balanced equation for the above reaction can be written as :

       Al(NO3)3 + (3)NaCl —> (3)NaNO3 + AlCl3

NaCl is the limiting reagent for this reaction as it is required more, hence it will be consumed more.

For us to calculate the maximum amount of AlCl3 produced, we know that as 3 moles of NaCl and 1 mole of Al(NO3)3 to produce AlCl3 hence, only  3 AlCl3 will be produced due to insufficient NaCl.

Learn more about moles at: https://brainly.com/question/29367909

#SPJ1

The functional groups that are involved in forming a peptide bond are the amine group (-NH2) and the carboxyl group (-COOH).

The formation of a peptide bond involves two functional groups: the carboxyl group (-COOH) of one amino acid and the amino group (-NH2) of another amino acid. During the process, a condensation reaction occurs, resulting in the release of a water molecule. The carboxyl group of one amino acid donates a hydrogen atom (H) to the amino group of the adjacent amino acid, creating a peptide bond and forming a dipeptide. This process can continue through multiple amino acids, leading to the formation of longer polypeptide chains. Peptide bonds are crucial for the structural and functional integrity of proteins in living organisms. Proteins, which are made up of one or more polypeptide chains, are the most common type of biomolecules in living organisms.

To know more about dipeptide, visit:

https://brainly.com/question/32240062

#SPJ11

During metabolism, atp is produced by chemical reactions, is broken down to fuel those reactions, and is transported from one cell to another.

What is metabolism?

The chemical processes in the body's cells known as metabolism convert food into energy. In order for our bodies to move, think, and grow, they require this energy. The chemical events that occur during metabolism are regulated by specific proteins in the body.

Therefore, During metabolism, atp is produced by chemical reactions, is broken down to fuel those reactions, and is transported from one cell to another.

To learn more about metabolism

Here: https://brainly.com/question/1490181

#SPJ4

I agree with the student's statement that states that ozone depletion is causing global warming.

Ozone layer depletion is the gradual thinning of the earth’s ozone layer in the upper atmosphere caused due to the release of chemical compounds containing gaseous bromine or chlorine from industries or other human activities.

The ozone layer is a region in the earth’s stratosphere that contains high concentrations of ozone and protects the earth from the harmful ultraviolet radiations of the sun.

Global warming is a sustained increase in the average temperature of the Earth, sufficient to cause climate change.

Greenhouse gases emitted into the atmosphere are the causes depletion of ozone layer, which in turn leads to global warming.

Chlorofluorocarbons or CFCs are the main cause of ozone layer depletion. These are released by solvents, spray aerosols, refrigerators, air-conditioners, etc.

Therefore, the statement made by the student is correct and I agree with it.

Learn more about ozone layer depletion at: https://brainly.com/question/11318086

#SPJ1

The balanced symbol equation for the Haber process, which is the industrial method for producing ammonia, is N2 + 3H2 → 2NH3

A. The Haber process is the industrial method for producing ammonia, and the balanced equation for the reaction is:

N2 + 3H2 → 2NH3

The atom economy for a product is the percentage of the total mass of reactants that becomes the desired product. For ammonia, the atom economy can be calculated as follows:

Molar mass of NH3 = 14.01 + 3(1.01) = 17.04 g/mol

Atom economy of NH3 = (2 mol NH3 x 17.04 g/mol) / [(1 mol N2 x 28.02 g/mol) + (3 mol H2 x 2.02 g/mol)] x 100% = 34.0%

B. To calculate the theoretical yield of ammonia, we need to use the given mass of nitrogen and the stoichiometry of the balanced equation. The molar mass of nitrogen is 28.02 g/mol, so 27.3 g of nitrogen is equal to:

27.3 g / 28.02 g/mol = 0.974 mol N2

According to the balanced equation, 1 mole of N2 reacts with 3 moles of H2 to produce 2 moles of NH3. Therefore, the theoretical yield of ammonia is:

Theoretical yield of NH3 = (0.974 mol N2) x (2 mol NH3 / 1 mol N2) x (17.04 g/mol NH3) = 33.1 g NH3

C. The percentage yield of the reaction can be calculated by dividing the actual yield of ammonia by the theoretical yield, and then multiplying by 100%. The actual yield of ammonia is given as 29.9 g:

Percentage yield of NH3 = (29.9 g NH3 / 33.1 g NH3) x 100% = 90.4%

D. The percentage conversion of hydrogen can be calculated by dividing the mass of hydrogen used in the reaction by the mass of hydrogen that would have been used if all of it had been consumed in the reaction. The mass of hydrogen used is 10.4 g, and the mass of hydrogen that would have been used if all of it had been consumed in the reaction is:

1( mol H2 x 2.02 g/mol) x (0.974 mol N2 / 1 mol N2) = 1.98 g H2

Therefore, the percentage conversion of hydrogen is:

Percentage conversion of H2 = (10.4 g H2 / 1.98 g H2) x 100% = 525% (This result is not possible, as the percentage conversion cannot be greater than 100%. It is likely that there was an error in the calculation or in the data provided.)

For more question on balanced symbol equation

https://brainly.com/question/11904811

#SPJ11

The NaOH extraction step would remove some acidic components, while the NaHCO3 extraction step may have limited effect if the significant acidic components have already been neutralized.

If you mistakenly extract a solution first with NaOH (aq) and then with NaHCO3 (aq), you would observe the following results:

NaOH Extraction:

When NaOH (aq) is added to the solution, it will react with acidic components present in the solution, such as carboxylic acids, phenols, or acidic functional groups. This reaction results in the formation of water-soluble salts or compounds, which will dissolve in the aqueous NaOH solution. As a result, the acidic components will be removed from the solution.

NaHCO3 Extraction:

When NaHCO3 (aq) is added to the remaining solution from the previous step, it will react with acidic components that were not neutralized by NaOH. NaHCO3 is a weaker base compared to NaOH and is primarily used to extract acidic compounds such as phenols and carboxylic acids. These acidic components will react with NaHCO3 to form water-soluble salts, which will dissolve in the aqueous NaHCO3 solution.

However, if NaOH is mistakenly used first, it is possible that some acidic components in the solution may have already reacted and been removed in the previous step. Therefore, the NaHCO3 extraction step may not yield significant additional changes or observable results.The results of mistakenly extracting the solution first with NaOH (aq) and then with NaHCO3 (aq) would depend on the nature and concentration of the acidic components present in the solution.

Learn more about carboxylic acids visit:

brainly.com/question/4721247

#SPJ11

Answer:

89.6 L

Explanation:

In normal conditions,

For every 1 mole of carbon dioxide at STP, it occupies 22.4 L of volume.

============================================================

Solving :

⇒ 1 mole : 22.4 L

⇒ 1 × 4 : 22.4 × 4

⇒ 4 moles : 89.6 L

[Ar]4s23d6 the electron configuration of the metal ion in Fe(NO3)3.

The noble gas krypton, which is isoelectronic with As arsenic 3 ion (As3), is isoelectronic with [Ar]3d104s2sp6 because it has gained three electrons.

Transition-metal ions are frequently referred to as having dn configurations because their valence electrons are mostly found in d orbitals. For instance, it is claimed that the Co3+ and Fe2+ ions have a d6 configuration.

The number of protons in the atomic nuclei of arsenic, abbreviated As, is 33. 33 electrons would likewise be present in a neutral As atom.

learn more about electron configuration

https://brainly.com/question/26084288

#SPJ4

Answer:

CD is oxidised

and

Au is reduced

hope helps u