Consider the following ionic
compounds and determine which
has the higher melting point.
A. MgS
B. Lil

In the laboratory, hydrogen gas is used as fuel for various purposes, including heating. In order to start the heating process, it is necessary to allow the hydrogen gas to flow continuously for a while. This is because there may be air or other gases present in the hydrogen gas pipeline that can affect the heating process.

For such more question on heating process

https://brainly.com/question/29317333

#SPJ8

Answer:

The average atomic mass of an element is the sum of the masses of its isotopes, each multiplied by its natural abundance.

Answer:

tap to view photo

1.melting

2.freezing

3.vaporization

4.condensation

To tell a Cu(NO3)2 solution from a Ni(NO3)2 solution, you can add KI to the solution. If the solution contains Cu(NO3)2, the brown precipitate will be formed, but if the solution contains Ni(NO3)2, no precipitate will be formed.

This is the best way to distinguish between these two solutions, since adding KOH or Na2C2O4 will result in blueish precipitates, being harder to identify if it is Cu(NO3)2 or Ni(NO3)2 and with Na2SO4 no reaction will happen.

It means that the answer is: By adding KI and seeing if a brown precipitate is formed.

Answer:

B. The amount of produd obtained/amount possible * 100

Explanation:

In chemistry, the yield of a chemical reaction is the quantity or amount of products obtained in that chemical reaction. It is calculated by using the following formula:

Percentage yield = Actual yield/theoretical yield × 100

- The actual yield is the amount of products got from a chemical reaction

- The theoretical yield is the amount of product got from using the balanced equation (stoichiometry).

when the temperature is raised to 325 K and the volume is increased to 1.8 L, the gas will occupy a pressure of approximately 1.08 atm.

To solve this problem, we can use the combined gas law equation, which relates the initial and final conditions of a gas when the amount of gas remains constant.

The combined gas law equation is given as:

(P₁ * V₁) / T₁ = (P₂ * V₂) / T₂

where P₁, V₁, and T₁ represent the initial pressure, volume, and temperature, respectively, and P₂, V₂, and T₂ represent the final pressure, volume, and temperature, respectively.

Given

Initial pressure (P₁) = 1.2 atm

Initial volume (V₁) = 0.9 L

Initial temperature (T₁) = 273 K

Final volume (V₂) = 1.8 L

Final temperature (T₂) = 325 K

We need to find the final pressure (P₂).

Substituting the given values into the combined gas law equation, we have:

(1.2 atm * 0.9 L) / 273 K = (P₂ * 1.8 L) / 325 K

Now, we can solve for P₂:

P₂ = (1.2 atm * 0.9 L * 325 K) / (273 K * 1.8 L)

= 1.08 atm

for more questions on temperature

https://brainly.com/question/2339046

#SPJ8

The reactants are 2 NaCl + F2

Fluorine (F) is most likely to gain electrons when forming an ion because it belongs to Group 17 (halogens) and requires one electron to achieve a stable configuration.



Among the given options, the element most likely to gain electrons when forming an ion is fluorine (F). Fluorine belongs to Group 17, also known as the halogens, which have a strong tendency to gain one electron to achieve a stable configuration. With seven valence electrons, fluorine only needs to gain one electron to fill its outermost electron shell and attain the stable electron configuration of the noble gas neon.

On the other hand, zinc (Zn) is a transition metal that typically loses electrons to form a positive ion. Lithium (Li) and aluminum (Al) both belong to groups that tend to lose electrons to achieve stability. Manganese (Mn) can gain or lose electrons depending on the specific reaction or compound due to its multiple oxidation states.

Fluorine is most likely to gain electrons when forming an ion among the given options because of its high electronegativity and its position in Group 17 of the periodic table.

To learn more about Fluorine click here brainly.com/question/27952083

#SPJ11

Answer:

Explanation:

The Chilton-Colburn analogy, also known as Reynolds Analogy, provides a connection between heat transfer and mass transfer of a fluid.

Hence, the corresponding heat transfer correlation, assuming the Chilton-Colburn analogy for mass transfer is:

Sh = 0.023(Re)0.83(3e)1/3

The corresponding heat transfer correlation by Chilton-Colburn analogy is:

Nu = 0.023 (Re)0.83 (Pr)n, where n = 0.4 to 0.6.

Assuming that the Chilton-Colburn analogy holds good for the present situation, the above correlation can be used as a heat transfer correlation.

Learn more about Reynolds Analogy

brainly.com/question/31298157

#SPJ11

Answer:

No. You can not simplify a coefficient of.

Explanation:

:)

This ensures that the leaf is able to take in the appropriate amount of CO2 for photosynthesis without losing too much water through transpiration. The presence of internal air spaces ensures that CO2 is rapidly transported from the stomata to the chloroplasts, where it is utilized for photosynthesis.

Leaves are specialized for internal CO2 uptake in several ways. The primary way is through tiny pores called stomata, which are surrounded by specialized cells that control the opening and closing of the pore. Additionally, leaves have internal air spaces that allow for efficient diffusion of gases.In the ways that leaves are specialized for internal CO2 uptake are as follows.Stomata, tiny pores surrounded by specialized cells that control the opening and closing of the pore, is the primary way that leaves are specialized for internal CO2 uptake. The second way is the presence of internal air spaces in leaves that allows for efficient diffusion of gases. The opening and closing of the stomata are regulated by a variety of environmental factors, including light intensity, temperature, and humidity. This ensures that the leaf is able to take in the appropriate amount of CO2 for photosynthesis without losing too much water through transpiration. The presence of internal air spaces ensures that CO2 is rapidly transported from the stomata to the chloroplasts, where it is utilized for photosynthesis.

To know more about chloroplasts visit:

https://brainly.com/question/11136550

#SPJ11

When answering questions, a question-answering bot on the platform Brainly should always be factually accurate, professional, and friendly. It should be concise and should not provide extraneous amounts of detail. It should not ignore any typos or irrelevant parts of the question.What is a catalyst?A catalyst is a substance that increases the rate of a chemical reaction without undergoing any permanent chemical change itself. This means that the catalyst is neither consumed nor produced in the reaction. In other words, the catalyst does not participate in the reaction itself, but it speeds up the reaction. There are many different types of catalysts, including enzymes, metals, acids, and bases.Which one of the following general characteristics is shared by all catalysts?A catalyst increases the rate of a chemical reaction, but it does not change the key of a reversible reaction. Therefore, the correct answer is c) they increase the reaction rate but do not change the key of a reversible reaction.
All catalysts share the general characteristic (c): they increase the reaction rate but do not change the equilibrium of a reversible reaction. Catalysts work by providing an alternative reaction pathway with a lower activation energy, allowing reactant molecules to convert into products more easily. However, they do not affect the overall energy balance of the reaction or its reversibility.

Answer:

8 mol of hydrogen will react with 1 mol of sulfur.

Explanation:

We'll begin by writing the balanced equation for the reaction.

This is given below:

8H2 + S8 —> 8H2S

Now, let us carefully observe the mole ratio of the reactants.

This is illustrated:

The mole ratio of the reactants ( i.e H2 and S8) is 8 : 1

From the balanced equation above,

We can thus, concluded that:

8 moles of H2 will reacted with 1 mole of S8.

Answer:

b

Explanation:

edge 2021

To calculate the amount of energy required to melt 235 grams of aluminum, we need to use the equation Q = m * ΔHf

Where Q is the heat energy, m is the mass of the substance, and ΔHf is the heat of fusion.

First, we need to convert the mass of aluminum from grams to moles. The molar mass of aluminum (Al) is 26.98 g/mol.

moles of Al = mass of Al / molar mass of Al

moles of Al = 235 g / 26.98 g/mol ≈ 8.71 mol

Next, we can calculate the heat energy required to melt the aluminum:

Q = m * ΔHf

Q = 8.71 mol * 10.6 kJ/mol

Multiplying the moles by the heat of fusion, we get:

Q = 92.326 kJ

Therefore, approximately 92.326 kilojoules (kJ) of energy are required to melt 235 grams of aluminum at its melting temperature of 658°C.

Learn more about amount of energy here

https://brainly.com/question/26380678

#SPJ11

Answer:

B. Propane

Explanation:

just did it edge 2022

The limiting component or reactant in a chemical process is the one that controls how much product is created. Because metals and compounds respond in a balanced chemical equation according to their mole ratios, a limiting reactant is necessary.

When a chemical reaction is complete, the limiting reagent—also known as the limiting reactant or limiting agent—is the component that has been completely consumed.  Since the process cannot proceed without this reagent, the quantity of product that can be produced is constrained.

Excess reagents or surplus reactants are any chemicals that are present in amounts greater than those necessary to cause a reaction with the limiting reagent (sometimes abbreviated as "xs").

Learn more about limiting reagent

https://brainly.com/question/11848702

#SPJ1

A single water molecule (H-O-H) is held together by covalent bonds.

In a water molecule, one oxygen atom is bonded to two hydrogen atoms. These atoms are held together by covalent bonds, which involve the sharing of electrons between the atoms. Specifically, the oxygen atom shares one electron with each of the hydrogen atoms, and each hydrogen atom shares one electron with the oxygen atom. This sharing of electrons allows each atom to have a stable electron configuration, forming a strong and stable bond.

The resulting molecule has a bent shape, with an angle of approximately 104.5 degrees between the hydrogen-oxygen-hydrogen atoms. This shape contributes to the unique properties of water, such as its polarity and hydrogen bonding capabilities.

Additionally, water molecules have a dipole moment, meaning they have a slight positive and negative charge, allowing them to interact with other polar molecules. Overall, the structure and properties of the water molecule play a crucial role in its importance for life and the environment.

To learn more about covalent bonds visit:

https://brainly.com/question/3447218

#SPJ11

Answer:

The answer to this question would be electron.

Electron is located on the outer side of the atom and constantly moving in an orbit so its location cannot be accurately determined. The cloud around the center of the atom is drawn to picture the orbit.

Neutron and proton located in the middle of an atom in a part that called nucleus. Nucleus location is kept at the center and it doesn't move.

Explanation:

Answer:

1. Proton = 4

2. Neutron = 5

3. Electron = 2

Explanation:

9 4Be^2+

From the above, we obtained the following:

Atomic number = 4

Mass number = 9

Charge = +2

1. Determination of the proton.

Atomic number is simply defined as the proton number. This implies that:

Atomic number = proton number

Atomic number = 4

Therefore,

4 = proton number

Proton = 4

2. Determination of the Neutron.

Mass number = Proton + Neutron

Mass number = 9

Proton = 4

Neutron =?

Mass number = Proton + Neutron

9 = 4 + Neutron

Collect like terms

Neutron = 9 – 4

Neutron = 5

3. Determination of the electron.

From the question given

9 4Be^2+

The atom has a charge of +2. This implies that the atom has lose 2 electrons. Thus we can obtain the electron as follow:

Proton = 4

Charge = +2

Electron =?

Electron = Proton – charge

Electron = 4 – 2

Electron = 2

When comparing C and Ge, C has a smaller radius than Ge because C is located higher in the group in the periodic table because as one goes down the group, the atomic radius increases since additional shells are added to the atoms.

The atomic radius of an atom is the distance from the nucleus to the outermost electron's valence shell. The number of protons and electrons, as well as the number of occupied shells, determines the atomic radius. Electrons are negatively charged particles that are attracted to the positively charged nucleus, which contains protons. Electrons are in constant motion, so their position cannot be predicted precisely, but the valence shell provides a reasonable estimation of their location.

Carbon (C) and germanium (Ge) are both members of Group 14 of the periodic table, which means they have four valence electrons. As a result, they have the same number of valence electrons, and their valence shells are similarly located.

Carbon is smaller than germanium because it is located higher in the group than germanium. As one goes down the group, the atomic radius increases since additional shells are added to the atoms. Therefore, C's smaller radius compared to Ge is due to the additional shells it possesses.

However, there are certain exceptions to the trend that atomic radius increases down a group and decreases across a period. For example, oxygen has a smaller radius than nitrogen because of the repulsive force between the two unpaired electrons on the same orbital.

For more such questions on Periodic table.

https://brainly.com/question/11155928#

#SPJ11

Answer:

There are millions of organic compounds but only thousands of inorganic compounds because:

a. organic compounds were formed by living things.

b. there is more carbon on Earth's surface than any other element.

c. atoms of elements other than carbon never combine with themselves.

d. carbon atoms can combine with up to four other atoms, including other carbon atoms.

Answer:

Electron = negative; Proton = positive; Neutron = no charge

Explanation:

Explanation:

cooked rice

nutrient

carbohydrate.

Boiler eggs

nutrient

Protein.

Explanation:

A. Chemical potential energy.

Answer:

The smallest atomic unit which maintains the physical properties of a compound is called a molecule.

Explanation:

A molecule is the smallest unit of a compound that can exist independently and still retain the properties of that compound. It is made up of two or more atoms that are bonded together, and it is the basic unit of a chemical compound. The atoms in a molecule are held together by chemical bonds, which are the attractive forces that hold the atoms together. Molecules can be made up of different types of atoms, and the type and arrangement of atoms in a molecule determine the properties of the compound.