CHEMISTRY MIDDLE SCHOOL

What is the balanced equation for Fe+O2—->Fe3O4

Answers

Answer 1
Answer:

Answer:

The balanced chemical reaction is:

Explanation:

Balanced chemical reaction : It is defined as the reaction in which the number of atoms of individual elements present on reactant side must be equal to the product side.

While balancing the chemical equation balance all the atoms of elements except oxygen atom which will be done in the last.

Step 1: Write three in front of iron;

Step 2: Now write two in front of oxygen gas;

The balanced chemical reaction is:

According to reaction, 3 moles of iron reacts with 2 moles of oxygen gas to give 1 mole of ferric oxide.

Answer 2
Answer:

Answer:

3Fe2O2---> Fe3O4

Explanation:

You need to add three to the left side to make it equal to the one on the right, and add a 2 since you can't change the subscripts


Related Questions

HIGH SCHOOL

Are atoms the smallest? Is there maybe, somehow a smaller thing that makes up atoms?

Answers

No, atoms are not the most elementary particles.

For instance, they are made of quarks, which are more elementary particles.
Quarks are smaller, for example -- protons are made up of them.
HIGH SCHOOL

An archeologist finds a 1.62 kg goblet that she believes to be made of pure gold. She determines the volume is 205 ML. What is the density of the goblet?

Answers

An archeologist finds a 1.62 kg goblet that she believed to made of pure gold. She determines the volume is 205 ML. Then, the density will be 0.01 kg/mL

What is density?

Density is defined as the mass per unit volume it means that mass present in 1 meter cube is called density. The S.I unit of density is kg/m^3 and in C.G.S it is gram/cm^3

So, In above statement we can understand that density, mass, and volume all are convert to each other it means that if we know any two variable then third one will be calculated easily.

Mathematical

Formula for density will be as mentioned below:-

Density = Mass/Volume.

In above question

Given that:-

Mass=1.62 kg

Volume = 205 ML

Density = Mass/Volume

Density = 1.62/205

So,

  Density = 0.01 kg/ML

Therefore, an archeologist finds a 1.62 kg goblet that she believed to made of pure gold. She determines the volume is 205 ML. Then the density will be 0.01 kg/mL.

Learn more about density here:

brainly.com/question/15164682

#SPJ2

D = density , m = mass , & v = volume
 

Answer: d = 0.01 g/mL
COLLEGE

The strongest elemental oxidizing agents are found in the _________ _________ region of the periodic table while the strongest reducing agents are found in the ________ ________ region of the periodic table.

Answers

Answer:

The strongest elemental oxidizing agents are found in the Group 17 region of the periodic table while the strongest reducing agents are found in the Group 1 region of the periodic table.

Explanation:

Strongest oxidizing agent means the elements which can oxidize others and themselves gets reduced easily. It means they can accept electrons easily. An element can gain electron easily if it may attain a half or full filled stability.

thus elements of group 17 is the region where we can found strongest elemental oxidizing agents.

Strongest reducing agents means the element can reduce others easily and thus can lose electrons easily. This is possible if an element attains a stability by losing electrons.  Thus elements of group 1 is the region where we can found reducing elemental reducing agent.

Strongest reducing agents are in Group 1 . For example lithium. The strongest oxidising agents are in Group 7 , For example Fluorine.

MIDDLE SCHOOL

In some chemical reactions between liquids, a new solid substance is formed. The new solid is called an. Please help me

Answers

Answer:

The new solid substance that is formed as a final product of the reaction between two liquid reactants is called a precipitate.

Explanation:

The substance that is responsible for creating this solid end product is called a precipitant. This precipitate settles completely after the process of centrifugation,the clear liquid that is present above the precipitate(the solid that is settled at the bottom by sedimentation) is called the supernatant. If the solubility of the compound is exceeded by the concentration, precipitation takes place.

An example of a precipitate is silver chloride, a white substance that is formed after the mixing of aqueous silver nitrate to a solution containing potassium chloride.

Answer              percipitate (please like and subscribe)

Explanation:

COLLEGE

The smallest particle of a compound that retains the properties of the compound is called a(n) A.atom.
B.matter.
C.element.
D.molecule.

Answers

I would go with D. If not then A
Answer is Atom. Atom is the smallest particle of a compound that retains the properties of the compound. 

Hope it helped you.


-Charlie
MIDDLE SCHOOL

How many atoms of each element are needed to create an ionic compound of strontium selenide

Answers

Step 1:
           Calculate the ionic charges on both atoms:

As Strontium belongs to Group-II in periodic table so it will tend to loose two electrons and form Sr⁺² , i.e.

                                        Sr    →     Sr⁺²  +  2 e⁻

While, Se belonging to Group-VI will tend to gain two electrons and form Se⁻², i.e. 

                                       Se  +  2 e⁻    →    Se⁻²

Step 2:
           Multiply the coefficient of each element by the charge of other element.

                                    Se⁻² × 2  =  2 Se⁻²           ∴ where 2 is charge on Sr
And,
                                    Sr⁺² × 2  =  2 Sr⁺²             ∴ where 2 is charge on Se

So, the formula comes out to be,

                                                  Sr₂Se₂

Or divide both coefficients by 2 to have a simplest form. i.e...

                                                    SrSe

Result:
           One One atoms of each element are needed to create an ionic compound of Strontium Selenide.
COLLEGE

How many moles of Fe2o3 are in 161 g of the compound ?

Answers

M = 161g
M = 56 * 2 + 16 * 3 = 160g/mol

n = m/M = 161g / 160g/mol = 1,00625 mol
MIDDLE SCHOOL

What is the purpose of phosphates in fertilizer what is the purpose of phosphates in laundry detergent

Answers

Fertilizers provide soil with nutrients, like phosphate, that are required to produce healthy gardens and abundant crops. The Fertilizer Institute reports that experts estimate one-third of the world's food supply would not be produced without the use of commercial fertilizers....i hope i help u....
Phosphates make the soil fertile, and enrich the soil with phosphorous.

Phosphates are used in laundry detergents. Phosphate reacts with dirt in clothes and removes them.
COLLEGE

You can practice converting between the mass of a solution and mass of solute when the mass percent concentration of a solution is known. The concentration of the KCN solution given in Part A corresponds to a mass percent of 0.180 %. What mass of a 0.180 % KCN solution contains 768 mg of KCN?

Answers

Answer: The mass of solution having 768 mg of KCN is 426.66 grams.

Explanation:

We are given:

0.180 mass % of KCN solution.

0.180 %(m/m) KCN solution means that 0.180 grams of KCN is present in 100 gram of solution.

To calculate the mass of solution having 768 mg of KCN or 0.786 g of KCN   (Conversion factor:  1 g = 1000 mg)

Using unitary method:

If 0.180 grams of KCN is present in 100 g of solution.

So, 0.768 grams of KCN will be present in = of solution.

Hence, the mass of solution having 768 mg of KCN is 426.66 grams.

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