Which equation represents a spontaneous reaction?


A) Ca + Ba2+ to Ca2+ + Ba

B) Co + Zn2+ to Co2+ + Zn

C) Fe + Mg2+ to Fe2+ + Mg

D) Mn + Ni2+ to Mn2+ + Ni

Answer:

35.45253819

Explanation:

(0.7578*34.96....)+(0.2422*36.96...)

Relative and average atomic mass both describe properties of an element related to its different isotopes. Out of these two Relative atomic mas is more accurate. The average atomic mass of Chlorine is 35.45g.

Mass defines the quantity of a substance. It is measured in gram or kilogram. Average mass is the mass of atoms of an element that are isotopes. It can be calculated by multiplying mass of a isotope to natural abundance of that isotope.

Average atomic mass = (mass of first isotope× percent abundance of first isotope)+(mass of second isotope× percent abundance of second isotope)

Substituting the given values

Average atomic mass=(0.7578×34.96....)+(0.2422×36.96...)

Average atomic mass=35.45g

Therefore, the average atomic mass is 35.45g.

To learn more about mass, here:

https://brainly.com/question/28704035

#SPJ2

Answer: with dog figs- it is 590

With decimals it is 589.68

Explanation:

6.508 g mass of of NH3 is formed when 5.36 g of nitrogen gas reacts with excess hydrogen gas.

                                N2 + 3 H2  → 2 NH3

The molar mass of N2 is 28.0 g/mol. The molar mass of NH3 is 17 g/mol.

To find the mass of NH3:

=5.36 x 2 x (17 / 28)

=182.2 / 28

= 6.508 g

The mass of ammonia is 5.36 g.

If you need to learn more about molar mass of NH3, click here

https://brainly.com/question/22997914?referrer=searchResults

#SPJ4

Answer:

Box A.

Explanation:

Density can be defined as mass all over the volume of an object.

Simply stated, density is mass per unit volume of an object.

Mathematically, density is given by the equation;

\(Density = \frac{mass}{volume}\)

In this scenario, Box A and Box B have the same density. However, Box A had more volume. Therefore, the box that would have more mass would be Box A because it has more capacity or volume to hold more matter.

This ultimately implies that, the volume of a box is directly proportional to its mass (amount of matter it can hold); the higher the volume of the box, the higher its mass (more mass).

It's density would be;

\(Density = \frac{50}{25}\)

Density = 2kg/cm³

It's density would be;

\(Density = \frac{20}{10}\)

Density = 2kg/cm³

Therefore, it can be deduced that even though Box A and Box B have the same density; Box A had more volume and consequently, more mass.

Answer:

    2H2    +   1 O2   ------>    2H2O

m = 12.7g                              m = ?

Get the number of moles for Hydrogen gas (H2) by dividing the mass by the molar mass (1.01g/mol as listed in the periodic table for its atomic mass)

12.7/1.01 = 12.57 mol of H2

Now use the mole to mole ratio of Hydrogen gas (H2) and water (H2O).

From the balanced equation, we can see that 2 mol of H2 gives us 2 mol of H2O. Since both of the ratios are equal (2:2), the moles we have for hydrogen gas is the same as the moles we get for water.

12.57 mol of H2O

Now that we have the amount of mol for H2O produced in this reaction, we can convert it to grams by multiplying the moles by the molar mass.

Molar mass of H2O = (1.01 x 2) + (16) = 18.02g/mol

12.57 x 18.02 = 226.5g (rounded)

Therefore 226.5g of water will be produced in this reaction

According to law of conservation of mass and stoichiometry, 114.3 g of water are produced if 12.7 grams of hydrogen reacted with an unknown amount of oxygen.

According to law of conservation of mass, it is evident that mass is neither created nor destroyed rather it is restored at the end of a chemical reaction .

Law of conservation of mass and energy are related as mass and energy are directly proportional which is indicated by the equation E=mc².Concept of conservation of mass is widely used in field of chemistry, fluid dynamics.

2 H₂ + O₂\(\rightarrow\) 2 H₂O,according to this equation,4 g hydrogen reacts with 32 g oxygen to give 36 g water, thus 12.7 g of hydrogen will produce 12.7×36/4=114.3 g water and hence for this amount of water to be formed  12.7 g of hydrogen reacts with 101.6 g of oxygen which is obtained as 114.3-12.7=101.6 g

Thus, 114.3 g of water is produced.

Learn more about law of conservation of mass,here:

https://brainly.com/question/28711001

#SPJ2

Answer:

1000ml/1L

Explanation:

at room temperature substances hawks together by covalent bonds are typically in liquid form

At room temperature substances hawks together by covalent bonds are typically in liquid or gas form.

Covalent compounds are typically liquids or gases at room temperature, although the more complex and the larger the molecule, the greater the chance that it could exist as a solid.

Compounds that form from two or more nonmetallic elements, such as carbon and hydrogen, are called covalent compounds. In a covalent compound, atoms of the different elements are held together in molecules by covalent bonds. These are chemical bonds in which atoms share valence electrons.

Learn more about Covalent compounds here: brainly.com/question/11651796

#SPJ2

Answer:

2mg+2hcl------>mgcl2+h2

Answer: When magnesium reacts with hydrochloric acid, it produces magnesium chloride and hydrogen gas. To write the formula for this reaction, we first need to identify the elements involved and their respective chemical symbols. The chemical symbol for magnesium is Mg, the symbol for hydrochloric acid is HCl, and the symbol for hydrogen is H.

Next, we need to balance the equation by making sure that the number of atoms of each element is the same on both sides of the arrow. In this case, we have one atom of magnesium on the left side of the arrow and one atom of hydrogen on the right side. However, we also have one atom of chlorine on the left side and two atoms of hydrogen on the right side. To balance the equation, we need to add a coefficient of 2 in front of the HCl on the left side, so that the equation becomes:

Mg + 2 HCl -> MgCl2 + H2

This balanced equation shows that for every one atom of magnesium that reacts with two atoms of hydrochloric acid, two atoms of magnesium chloride and two atoms of hydrogen gas are produced.

Part A: The strength of an electric field that will balance the weight of a proton is approximately 9.8 N/C (or 9.8 x 10^9 N/C).

Part B: The direction of an electric field that will balance the weight of a proton is upward.

Part C: The strength of an electric field that will balance the weight of a electron is approximately 9.8 x 10^16 N/C.

Part A: The weight of a proton is given by the equation F=mg, where F is force, m is the mass of proton and g is the acceleration due to gravity. The mass of proton is 1.67 x 10^-27 kg. So F = 1.67 x 10^-27 kg x 9.8 m/s^2 = 1.63 x 10^-26 N. The strength of an electric field required to balance the weight of a proton is the force acting on the proton divided by the charge of proton, which is approximately 9.8 x 10^9 N/C.

Part B: The weight of a proton is an upward force and the electric field that will balance this force will also be upward.

Part C: Similarly, the weight of an electron is given by the equation F=mg, where F is force, m is the mass of electron and g is the acceleration due to gravity. The mass of an electron is 9.11 x 10^-31 kg. So F = 9.11 x 10^-31 kg x 9.8 m/s^2 = 8.89 x 10^-31 N. The strength of an electric field required to balance the weight of an electron is the force acting on the electron divided by the charge of electron, which is approximately 9.8 x 10^16 N/C.

electric fields we must take into account that the charge of the proton is positive and the charge of electron is negative.

To know more about electric field click below:

brainly.com/question/8971780#

#SPJ4

It is true that the sublevels of each principal energy level of the hydrogen atom have the same energy.

An electron is more likely to be found in specific regions of a given energy level than in others when it is at that level. They are referred to as orbitals. Sublevels are collections of equal energy orbitals. There can be a maximum of two electrons in each orbital. A characteristic known as electron spin causes the two electrons in a specific orbital to slightly differ in energy while under a magnetic field. According to the theory of electron spin, there is an energy difference between two electrons in the same orbital because they are spinning in opposite directions on their axes.

Each major energy level has a single sublevel with a s orbital, which can hold up to two electrons.

To know more about principal energy level :

https://brainly.com/question/19568870

#SPJ4

The volume of the new system will be 4.32 L.

Given that a 2.50 mol sample of gas occupies 3.0 L of volume. If the container is elastic and the amount of the gas increased to 3.60 mol.

We have to calculate the volume of the new system.

Therefore, we use Avogadro's Law, which states that equal volumes of gases at the same temperature and pressure contain an equal number of molecules.

According to Avogadro's Law,V1/n1= V2/n2Where,V1 is the initial volume of the gas.n1 is the initial number of moles of the gas.V2 is the final volume of the gas.n2 is the final number of moles of the gas.

Now, let's calculate the new volume of the system using Avogadro's Law.

V1/n1= V2/n2

Given that V1 = 3.0 L,

n1 = 2.5 mol,

n2 = 3.6 mol

Therefore, V2 = (V1*n2)/n1V2

= (3.0 * 3.6) / 2.5V2

= 4.32 L

Therefore, the volume of the new system will be 4.32 L.

To learn more about volume visit;

https://brainly.com/question/28058531

#SPJ11

The measured volume of hydrogen gas will be too high.

The volume of hydrogen is measured by collecting the gas over water. The volume of the gas is measured as the volume of water displaced by the gas in an inverted container.

When air leaks into the graduated cylinder, more volume of water is displaced hence a higher volume of hydrogen gas is measured.The calculated molar volume of hydrogen will be too high as a result of this error

The gas being recorded during the experiment would not only include hydrogen gas, but the air that leaked into the eudiometer tube as well. This leads to the increase in the volume of hydrogen gas which will be too high.

Since the volume of hydrogen is too high, therefore the calculated molar volume of hydrogen would also be too high.

To know more about volume, refer: brainly.com/question/10609459

#SPJ4

The production of methyl 3-nitrobenzoate in the lab involved the reaction of methyl benzoate with bromine dissolved in 48% HBr.

Methyl 3-nitrobenzoate is an organic compound with the chemical formula C8H7NO4. It is commonly used as a reagent in organic synthesis and can be prepared in the lab through different methods.

Among the group of answer choices provided, the reaction of methyl benzoate with bromine dissolved in 48% HBr is the method that yields methyl 3-nitrobenzoate. This reaction is an example of electrophilic aromatic substitution, where the bromine molecule is the electrophile that attacks the electron-rich aromatic ring of the methyl benzoate.

The reaction mechanism involves the formation of a bromonium ion intermediate, which is then attacked by the nucleophilic oxygen of the nitrite ion present in the reaction mixture. The resulting intermediate undergoes deprotonation to yield the final product, methyl 3-nitrobenzoate.

Click the below link, to learn more about Methyl Nitrobenzoate:

https://brainly.com/question/10213530

#SPJ11

From the given option d. H₂SO₄ is polyprotic acid while the other formulas are not polyprotic acid.

"Polyprotic" properly translates as having numerous protons. Acids known as polyprotic acids are those that can lose more than one proton per molecule during acid-base interactions. Alternatively put, acids that include many molecules of an ionizable H+ atom. The first proton to be lost is the one that happens the quickest and most easily as protons are lost in phases (one at a time). Depending on how frequently dissociation takes place, polyprotic acids have a variety of dissociation constants, including Ka1, Ka2, Ka3, and equivalence points. Sulfuric Acid (H₂SO₄ ) is illustration of a diprotic polyprotic acid.

Acids known as polyprotic acids are capable of losing several protons per molecule. They can also be divided into diprotic acids and triprotic acids based on how many protons they can donate, respectively. Titration curves work well for illustrating polyprotic acids and bases. Consequently, a monoprotic acid is an acid that can only contribute one proton, whereas a polyprotic acid can donate many proton donations. Similar to this, a polyprotic base can accept many proton but a monoprotic base can only accept one proton.

To know more about polyprotic acid, click here:

https://brainly.com/question/28326127

#SPJ4

The substances that participate in a reaction are called reactants, whereas the substance that forms as a result of a reaction is called a product.

Reactants are the starting materials that are involved in a chemical reaction, which undergo a transformation to form new substances. The reactants are typically shown on the left side of a chemical equation, with an arrow pointing to the right side, where the products are shown.

Products, on the other hand, are the new substances that are formed as a result of the chemical reaction. They are typically shown on the right side of a chemical equation, with an arrow pointing from the reactants on the left side.

Chemical reactions involve the breaking and formation of chemical bonds, which result in the rearrangement of atoms to form new substances with different chemical and physical properties than the reactants. The law of conservation of mass dictates that the total mass of the reactants must be equal to the total mass of the products in a chemical reaction.

Learn more about chemical reactions here:

https://brainly.com/question/9201475

#SPJ4

alignment of the Earth with the Moon and Sun

This is the answer.

Tides are formed by gravitational force of Sun and Moon.

3

Explanation:

moon is the reason that creates tides in the ocean due to gravitational force and the moon's distance

When 16.45 g sample of NaCl is dissolved in enough water to make 1.000 l of solution, the solution has a molarity equal to 0.2815 moles NaCl/L solution.

Molarity, or molar concentration, is defined as the number of moles of solute per liter of solution. It can be calculated using the formula given by:

M = n/v

where M = molarity

n = number of moles of solute

v = volume of solution

If the mass of the solute NaCl is 16.45 g, divide it with the molar mass of NaCl to get the number of moles of solute.

n = m/MM

n = 16.45 g/58.44 g/mol

n = 0.2814852841 moles NaCl

If 0.2814852841 moles NaCl is dissolved in enough water to make 1. 000 l of solution, solve its molarity.

M = n/v

M = 0.2814852841 moles NaCl/1.000 l solution

M = 0.2814852841 moles NaCl/L solution

M = 0.2815 moles NaCl/L solution

Learn more about molarity here: https://brainly.com/question/14469428

#SPJ4

(d) greenhouse effect

Answer:

B.

near the equator

Explanation:

Tropical rainforests are found in Central and South America, western and central Africa, western India, Southeast Asia, the island of New Guinea, and Australia. Sunlight strikes the tropics almost straight on, producing intense solar energy that keeps temperatures high, between 21° and 30°C (70° and 85°F). Tropical rainforests are found closer to the equator where it is warm. Temperate rainforests are found near the cooler coastal areas further north or south of the equator. The tropical rainforest is a hot, moist biome where it rains all year long.

Answer:

Li,Ci,P,N

Explanation:

Answer:

6 g

Explanation:

The balanced equation for the reaction is:

CH4 + 2O2 → CO2 + 2H2O

Using the balanced equation, we can see that 1 mole of CH4 reacts with 2 moles of O2 to produce 1 mole of CO2 and 2 moles of H2O.

We first need to calculate the number of moles of water produced:

20.0 g H2O × (1 mol H2O/18.015 g H2O) = 1.11 mol H2O

Since 1 mole of CH4 produces 1 mole of CO2, we know that the number of moles of CO2 produced is also 1.11 mol.

Now we can use the molar mass of CO2 to convert moles to grams:

1.11 mol CO2 × (44.01 g CO2/1 mol CO2) = 48.85 g CO2

Therefore, the mass of CO2 produced in the reaction is approximately 6 g.

The following species can be listed in order of decreasing boiling point:

CO2>O3>N2>O2>H2

The boiling point of gases depends upon the strength of the intermolecular forces of attraction acting between them and the molecular weight of the gaseous species.

The reasons for the order of decreasing boiling point can be stated as:

For CO2- CO2 has the highest boiling point due to the3 polar covalent bond between the carbon and oxygen atoms. It also exhibits dipole-dipole interactions.

For Ozone(O3)- It also has polar covalent bonds but also exhibits London dispersion forces which are a type of weak intermolecular forces.

For Nitrogen(N2)- The intermolecular forces(London dispersion force) are weak and N2 is a nonpolar molecule.

For Oxygen(O2)- O2 is also nonpolar and exhibits London dispersion force.

Hydrogen(H2)- It is also a non-polar molecule exhibiting London dispersions forces due to its low molecular weight and small size.

Hence due to the above-mentioned reasons, the decreasing order of boiling point is:

CO2>O3>N2>O2>H2

To know about the boiling point :

https://brainly.com/question/2153588

From the observation and conclusion shown in the image, it can be inferred that the two solutions being mixed contain ions that react with each other to form an insoluble compound.

The cloudy white precipitate indicates that the reaction has taken place and the resulting compound is not soluble in the solvent.

Based on the experimental setup shown in the provided image, it appears to be a chemical reaction process involving the mixing of two colorless solutions resulting in a cloudy white precipitate. This type of reaction is called a precipitation reaction, which involves the formation of an insoluble solid (precipitate) when two solutions are mixed.

However, without additional information about the specific reactants used in the experiment, it is difficult to determine the exact chemical reaction that occurred.

For more such questions on compound

https://brainly.com/question/15929599

#SPJ11

The volume of 0. 250 m sulfuric acid solution would be needed to react completely with 18. 00 ml of 0. 350 m ammonia solution is 0.0504 L.

The balance reaction is 2KOH+\(H_{2} SO_{4}\)=\(2H_{2} O+K_{2} SO_{4}\)

This shows us that we need 2 moles of KOH for each mole of sulfuric acid.

So, we write mathematically 2*(0.018*0.350)=(V*0.250)

V=(2*0.018*0.350)/0.250=0.0504 L

With the chemical formula H2SO4, sulfuric acid, also known as sulphuric acid or oil of vitriol, is a mineral acid made up of the elements hydrogen, oxygen, and sulfur. It is a viscous liquid that is miscible with water and is colorless, odorless, and viscous.

Since pure sulfuric acid has a significant affinity for water vapor, it does not naturally occur on Earth; as a result, it is hygroscopic and rapidly collects water vapor from the atmosphere. Due to its potent dehydrating and oxidizing qualities, concentrated sulfuric acid is extremely corrosive to various materials, including rocks and metals. One significant exception is phosphorus pentoxide, which dehydrates sulfuric acid to sulfur trioxide instead of being dehydrated by sulfuric acid.

Learn more about Sulfuric acid here:

https://brainly.com/question/1107054

#SPJ4

Answer:

B MEMBERS OF THE SAME SPECIES

I HAVE NO EXPLANATION BECAUSE THIS IS EASY

A trisaccharide is formed by linking three monomers of the sugar C5H10O5 through dehydration reactions.

The formula of this trisaccharide is dependent on the specific arrangement of the monomers and their glycosidic bonds.

The sugar C5H10O5, also known as pentose, can be found in many biological molecules such as nucleic acids and certain carbohydrates. When three monomers of this sugar are brought together and undergo dehydration reactions, a trisaccharide is formed. Dehydration reactions involve the removal of a water molecule to form a new bond between monomers.

The formula of the trisaccharide will depend on the specific arrangement of the monomers and the type of glycosidic bond that forms between them. Glycosidic bonds can link monomers in different orientations, resulting in different types of trisaccharides. For example, if the three monomers are linked in a linear fashion, the trisaccharide may have a formula such as C15H26O13. However, if the monomers are linked in a branched fashion, the formula may be different.

Overall, the formula of a trisaccharide made from three C5H10O5 monomers will depend on the specific arrangement of the monomers and the type of glycosidic bond formed between them.

To learn more about monomers click brainly.com/question/18784783

#SPJ11

Answer:

D - 3.7 L.

Explanation:

Took the test.

Answer:

It will lose 2 electrons

Explanation:

Here we have a calcium atom, which has 20 electrons.

Those 20 electrons are in 4 shells. (2-8-8-2)

Saying there are 2 electrons in the valence shell (Shell N), to get to an octet with an ionic bond (with a group 16 element), those 2 electrons will have to go.

Ethyl acetate dissolve the trans-1,2-dibenzoylethylene as

The chemical compound ethyl acetate, also known as ethyl ethanoate or EtOAc or EA, has the formula C4H8O2 and is an organic compound. This clear liquid is used to decaffeinate tea and coffee as well as in glues and nail paint removers. It has a distinctive sweet scent akin to pear drops. The ester of ethanol and acetic acid, ethyl acetate is produced in huge quantities for use as a solvent.

A moderately polar solvent with the benefits of being volatile, comparatively non-toxic, and non-hygroscopic is ethyl acetate. Due to the lack of an acidic proton, it is a weak hydrogen bond acceptor and cannot act as a donor (one directly bonded to an electronegative atom such as fluorine, oxygen, or nitrogen). At normal temperature, ethyl acetate has an 8% solubility in water and can dissolve up to 3% of water. It is more soluble in water at higher temperatures. In the presence of potent aqueous bases and acids, it becomes unstable.

Molecular Formula C16H12O2

Synonyms

trans-1,2-Dibenzoylethylene

959-28-4

Dibenzoylethylene

1,2-Dibenzoylethylene

trans-1,4-Diphenyl-2-butene-1,4-dione

Toluene is an aromatic chemical made up of a benzene ring and a methyl substituent. The methyl group has a hyperconjugative action on the benzene ring that donates electrons. Toluene, however, is a non-polar substance.

Hexane and toluene are both non-polar hydrocarbons. Water, on the other hand, is a polar chemical.

Hence, as per the "like dissolves like" concept both hexane and toluene dissolve in each other.

Learn more about dibenzoylethylene here :

brainly.com/question/29892742

#SPJ4