Which chemical equation is balanced?
A. Fe2O3 + CO --> Fe + 2CO2
B. 8Al + 3Fe3O4 --> 4Al2O3 + 9Fe
C. 2CuO + 2NH3 --> 2Cu + 3H2O + N2
D. Na2SO2 + S --> S2O3+ Na
E. None of these are balanced

1 valence electron

Explanation:

It is because the metal having one valence electron can readily lose single electron from its outermost shell.

Answer: the answer is 1 valence electron

Explanation: just did a test with this quest thx for the points good luck :D

Answer:

The roman numeral in copper(I) oxide indicates that the oxidation number of copper in the compound is 1.

Explanation:

Roman numeral is used to indicate the oxidation number of an element in a compound.

The roman numeral in copper(I) oxide indicates that the oxidation number of copper in the compound is 1.

This can be seen from the following illustration:

copper(I) oxide => Cu₂O

Oxidation number of O = –2

Oxidation number of Cu₂O = 0

Oxidation number of Cu =?

Cu₂O = 0

2Cu + O = 0

2Cu – 2 = 0

Collect like terms

2Cu = 0 + 2

2Cu = 2

Divide both side by 2

Cu = 2/2

Cu = 1

Thus, we can see that the oxidation number of Cu in Cu₂O is 1. Hence the name of Cu₂O is copper(I) oxide indicating that the oxidation number of of copper (Cu) in the compound is 1.

For copper(II) oxide, we shall determine the oxidation number of Cu. This can be obtained as follow:

copper(II) oxide, CuO => CuO

Oxidation number of O = –2

Oxidation number of CuO = 0

Oxidation number of Cu =?

CuO = 0

Cu + O = 0

Cu – 2 = 0

Collect like terms

Cu = 0 + 2

Cu = 2

Thus, the oxidation number of Cu in CuO is 2. Hence the name of CuO is copper(II) oxide indicating that the oxidation number of of copper (Cu) in the compound is 2.

From the above illustrations,

We can see that the roman numeral in both copper(I) oxide, Cu₂O and copper(II) oxide, CuO are different because the oxidation number of Cu in both cases are different.

All of the lipid compounds are soluble in organic solvents but not in water. Among the given examples, the lipids are oils, cholesterol and phospholipids. The correct options are A, B and D.

The organic compounds which consists of carbon, hydrogen and oxygen atoms and they form the framework for the structure and function of living organisms are called lipids.

These compounds are non-polar molecules which are soluble only in non-polar solvents and it is insoluble in water. They are composed of fats and oils. They are energy rich molecules which provide energy to perform different processes.

Thus the correct options are A, B and D.

To know more about lipids, visit;

https://brainly.com/question/14915606

#SPJ1

The correct option is (a) i.e. C20H120O60. If the molecular formula for glucose is C6H12O6. C20H120O60 be the formula for a polymer made by linking ten glucose molecules together by dehydration reactions.

A chemical process known as dehydration reaction synthesis unites two smaller molecules by removing atoms from each of them. Based on the structure of hydrocarbons, aliphatic and aromatic organic substances can be further subdivided. Several chemical reactions involving organic molecules can result in the formation of new compounds with altered atom-bonding arrangements. Others just entail the displacement or substitution of atoms, while some chemical reactions result in the synthesis of molecules. Synthesis or combination reactions combine two chemicals to form a single molecule. For instance, when Mg and O2 are mixed, MgO is produced (magnesium oxide). "Dehydration reactions are chemical processes in which a water molecule is eliminated from the reactant molecule. The technique of mixing two chemicals while eliminating water molecules is known as dehydration synthesis. This is because "dehydration" is defined as "losing water," while "synthesis" is defined as "creating a new material." As a result, "dehydration synthesis" refers to the process of "losing water" while creating new chemicals.

To know more about dehydration reactions please refer: https://brainly.com/question/28233389

#SPJ4

The  AIR MASSES that would affect the climates of Florida : are maritime tropical air mass and the maritime polar air mass,

Maine : maritime polar air mass and maritime tropical air mass,

Montana :  continental polar and maritime polar air masses.

Texas :  maritime tropical air masses  and continental tropical air masses

An air mass is  described as a large body of air with generally uniform temperature and humidity.

An air mass's properties are determined by the region from which it originates. The likelihood that the air mass will take on characteristics of the surface below increases with the amount of time it spends over its source region.

Learn more about air mass at:

https://brainly.com/question/19626802

#SPJ1

The number of atoms of O in 46.6 moles of Al₂(CO₃)₃ is  2.52 x 10²⁶

To learn more about empirical formulas,

https://brainly.com/question/29608015

Answer:

(aq) meaning aqueous solution

Explanation:

hope it helps .

The observation that compound A releases H2 gas while compound B does not when treated with Na metal can be explained by considering the structural differences between the two compounds and their ability to undergo specific reactions.

Compound A and compound B both have the molecular formula C₂H₆O, which indicates that they both contain two carbon atoms, six hydrogen atoms, and one oxygen atom. However, the difference lies in the arrangement of these atoms within the molecules. One possible explanation for the observed difference is that compound A is an alcohol, specifically ethanol (CH₃CH₂OH), while compound B is an ether, such as dimethyl ether (CH₃OCH₃). The presence of the hydroxyl group (-OH) in ethanol enables it to undergo a reaction with sodium metal, known as the metal-acid reaction. In this reaction, the metal displaces the hydrogen from the hydroxyl group, forming sodium ethoxide (CH₃CH₂ONa) and releasing hydrogen gas (H₂). On the other hand, ethers like dimethyl ether lack the hydroxyl group and therefore cannot undergo the metal-acid reaction. Consequently, when compound B is treated with sodium metal, no hydrogen gas is released. The ability of compound A to release hydrogen gas while compound B does not when treated with sodium metal can be attributed to the presence of a hydroxyl group in compound A (ethanol), enabling it to undergo a metal-acid reaction, whereas compound B (dimethyl ether) lacks the necessary functional group and thus does not undergo this reaction.

For such more questions on structural

https://brainly.com/question/29117530

#SPJ11

Answer:

hill

Explanation:

Answer:

B, trust me

Explanation:

^^^

Answer:

The solid phase has the lowest entropy.

Explanation:

Entropy (S) is the measure of how  spread out or dispersed the energy of a system is among the different possible ways  that system can contain energy. The greater the dispersal, the greater is the entropy.

In a solid, the atoms or molecules  are confined to fixed positions, thus, the dispersal is minimal and the entropy is at its lowest.

Answer:

I think the awnser is B proteins

Explanation:

I could be wrong but this is off preveous knowleadge.

The direction of heat transfer between two samples of carbon depends on their temperature difference, and not solely on their average kinetic energy. While the average kinetic energy of a substance is related to its temperature, it is not the determining factor for the direction of heat transfer.

When two samples of carbon come into contact, a heat transfer will occur between sample A and sample B. The direction of heat transfer is dependent on the temperature difference between the samples. Heat transfer always flows from a hotter object to a cooler object, so if sample A is hotter than sample B, heat will flow from A to B. If sample B is hotter than sample A, heat will flow from B to A.
The average kinetic energy of the molecules in a substance is related to its temperature. The higher the average kinetic energy, the higher the temperature of the substance. However, the average kinetic energy does not determine the direction of heat transfer.
It is possible for a substance with a lower average kinetic energy (and therefore a lower temperature) to transfer heat to a substance with a higher average kinetic energy (and therefore a higher temperature). This can occur if the substance with the lower temperature has a greater heat capacity, which means it can absorb more heat without a significant increase in temperature.

for more questions on kinetic energy

https://brainly.com/question/25959744

#SPJ8

Answer:

Phosphorus

Explanation:

This should be the correct answer

If not then im sorry :)

The result of the reaction between 2.2 g of Al and 1.8 g of O2 is the formation of 3.89 g of \(Al_{2} O_{3}\).

The given masses of Al and \(O_{2}\) are in a ratio of approximately 1:1. Therefore, we can assume that all the Al reacts with all the O2, and use stoichiometry to determine the products and reactants involved.

The balanced chemical equation for the reaction between Al and O2 is:

                                       4 Al + 3 \(O_{2}\) → 2 \(Al_{2} O_{3}\)

Using the molar masses of Al (26.98 g/mol) and \(O_{2}\) (32.00 g/mol), we can convert the given masses into moles:-

2.2 g Al × (1 mol Al/26.98 g Al) = 0.0815 mol Al

1.8 g \(O_{2}\) × (1 mol \(O_{2}\)/32.00 g \(O_{2}\)) = 0.0563 mol \(O_{2}\)

From the balanced chemical equation, we can see that 4 moles of Al react with 3 moles of \(O_{2}\) to produce 2 moles of Al2O3. Therefore, the limiting reactant is \(O_{2}\), since there are fewer moles of \(O_{2}\) than required by the stoichiometry of the reaction.

Using the mole ratio from the balanced chemical equation, we can determine the amount of \(Al_{2} O_{3}\) produced:

0.0563 mol \(O_{2}\) × (2 mol \(Al_{2} O_{3}\)/3 mol \(O_{2}\)) × (101.96 g Al2O3/mol) = 3.89 g \(Al_{2} O_{3}\).

To know more about chemical equation:

brainly.com/question/11231920

#SPJ1

Answer:

a. <1.0

b. 1.30

c. 3.00

d. 11.00

e. 12.70

The mass of the zinc that is required is 184.6 g.

We know that the term reaction has to do with the combination of two substances. Often times, we would have a new substances that is formed which is the product of the reaction.

Let us look at the reaction between zinc and copper II sulfate and that reaction is written as; \(Zn(s) + CuSO_{4} (aq) ------ > ZnSO_{4} (aq) + Cu(s)\)

Number of moles of the copper sulfate = 454 g/159.61 g/mol

= 2.84 moles

Now, the reaction is 1:1  we can see;

Number of moles = mass/molar mass

Mass of Zn = 2.84 moles * 65 g/mol

= 184.6 g

Learn more about molar mass:https://brainly.com/question/12127540

#SPJ1

Answer:

Explanation:

The balanced chemical equation for the reaction between sulfuric acid and sodium hydroxide is:

H2SO4 + 2NaOH → Na2SO4 + 2H2O

From the equation, we can see that one mole of sulfuric acid reacts with two moles of sodium hydroxide. Therefore, the number of moles of sodium hydroxide used in the reaction is:

n(NaOH) = c(NaOH) x V(NaOH) = 0.400 mol/L x 0.0200 L = 0.00800 mol

Since one mole of sulfuric acid reacts with two moles of sodium hydroxide, the number of moles of sulfuric acid used in the reaction is twice that of sodium hydroxide:

n(H2SO4) = 2 x n(NaOH) = 2 x 0.00800 mol = 0.0160 mol

The concentration of the sulfuric acid can be calculated by dividing the number of moles by the volume used in the titration:

c(H2SO4) = n(H2SO4) / V(H2SO4) = 0.0160 mol / 0.0250 L = 0.640 M

Therefore, the concentration of the dilute sulfuric acid is 0.640 M.

Answer:

To clean microscope eyepiece lenses, breathe condensation onto them and then wipe them with lens tissue. Kim-wipes are made by Kleenex and generally will work well. For stubborn spots, wipe the surface with tissue moistened with 95% alcohol. Wipe the lens dry with a dry tissue.

Explanation:

Answer:i believe 9-?

Explanation:

boron-10

boron-11

carbon-12

carbon-13

oxygen-16

oxygen-17

oxygen-18

chlorine-35

chlorine-37

Answer:

B

Explanation:

Mass is defined as the quantity of matter in an object.

Answer:

A.

Explanation:

Spiders are creepy.

That your answer.

Answer:

think I did this before and its V

Cyanide  is the polyatomic ion in the compound HCN. Therefore, the correct option is option D among all the given options.

By convention, the charge of an electron is believed to be negative, and this charge is equal to something and opposite to the charge of a proton, which would be thought to be positive. An ion's net charge is not zero since its total amount of electrons is greater than its entire number of protons.

A cation is indeed a positively charged ion that has fewer electrons than protons, whereas an anion has more electrons than protons. Because electrostatic force attracts opposing electric charges, anions and cations attract one other and quickly form ionic compounds. Cyanide  is the polyatomic ion in the compound HCN.

Therefore, the correct option is option D.

To learn more about ion, here:

https://brainly.com/question/14059707

#SPJ1

Answer: The molar concentration of 29 g of \(Mg(OH)_{2}\) dissolved in 1.00 L of water is 0.497 M.

Explanation:

Given: Mass = 29 g

Volume = 1.00 L

Moles is the mass of substance divided by its molar mass. So, moles of \(Mg(OH)_{2}\) is as follows.

\(Moles = \frac{mass}{molar mass}\\= \frac{29 g}{58.32 g/mol}\\= 0.497 mol\)

Molarity is the number of moles of a substance divided by volume in liter.

Hence, molarity of the given solution is as follows.

\(Molarity = \frac{moles}{Volume (in L)}\\= \frac{0.497 mol}{1.00 L}\\= 0.497 M\)

Thus, we can conclude that the molar concentration of 29 g of \(Mg(OH)_{2}\) dissolved in 1.00 L of water is 0.497 M.

The best description of the relationship between population size, carrying capacity, and limiting factors is: "The size of a population usually stays near its carrying capacity due to limiting factors."

Carrying capacity refers to the maximum number of individuals that a particular environment can sustainably support. It represents the limit to which a population can grow given the available resources, such as food, water, and habitat. Limiting factors, on the other hand, are the factors that restrict population growth by reducing birth rates, increasing death rates, or limiting access to resources.As a population approaches its carrying capacity, limiting factors come into play and regulate the population size. These limiting factors can include competition for resources, predation, disease, availability of suitable habitat, and other environmental factors. They act as checks on population growth, preventing it from exceeding the carrying capacity of the ecosystem.

Therefore, the size of a population usually stays near its carrying capacity because the limiting factors ensure that the population does not exceed the available resources and ecological limits of the environment. If the population surpasses the carrying capacity, the limiting factors will intensify, causing a decline in resources and an increase in mortality rates, which ultimately brings the population back towards the carrying capacity.It's important to note that the relationship between population size, carrying capacity, and limiting factors is dynamic and can vary depending on various ecological and environmental factors.

for such more questions on capacity

https://brainly.com/question/29792498

#SPJ8

The plate tectonics of the geosphere and the winds of the atmosphere experience convection currents as a result of the Sun’s energy.

A convection current can be defined as a process that includes the movement of energy from one place to another and is also known as convection heat transfer.

Convection currents have a tendency to flow fluid or gas molcules from one place to another. These currents are generated as a result of the differences within the densities and temperatures of a particular gas or fluid.

The heat energy can be provided by the process of convection between the two parts of the fluid at two different temperatures. The mantle within the surface of the earth flows from one place to another due to convection currents.

Convection can be seen in the rising plume of hot air from fire, plate tectonics, oceanic currents, and sea-wind formation where upward convection is modified by Coriolis forces.

Learn more about convection currents, here:

https://brainly.com/question/20169044

#SPJ1