Answer:
1. Fe₂O₃ + 3CO → 2Fe + 3CO₂
2. Al₂O₃ + 3C + Cl₂ → 3CO + 2AlCl₃
3. 2H₂S + 3O₂ → 2SO₂ + 2H₂O
Explanation:
Para balancear ecuaciones redox se acostumbra a usar el método ion-electrón, hay que determinar qué elemento se oxida y cual se reduce lo que a la vez significa, aumento del número de oxidación o descenso del mismo.
1. Fe₂O₃ + CO → Fe + CO₂
Para este caso, el hierro se reduce, pasando de Fe³⁺ a Fe⁰ o lo que se dice estado fundamental.
Fe³⁺ + 3e⁻ → Fe
El carbono del CO se oxida a CO₂ donde el carbono pasa de C²⁺ a C⁴⁺
C²⁺ → C⁴⁺ + 2e⁻
Como los electrones quedaron desbalanceados multiplicamos por 2 y 3 las semi reacciones
(Fe³⁺ + 3e⁻ → Fe ) . 2
2Fe³⁺ + 6e⁻ → 2Fe
(C²⁺ → C⁴⁺ + 2e⁻) . 3
3C²⁺ → 3C⁴⁺ + 6e⁻
Ya podemos balancear la ecuacion final:
Fe₂O₃ + 3CO → 2Fe + 3CO₂
(como ya tenemos 2 atomos de hierro en el oxido, no haría falta agregar el 2 en la estoquiometría)
2. Al₂O₃ + C + Cl₂ → CO + AlCl₃
En este caso el carbono se oxida, y el cloro se reduce
C → C²⁺ + 2e⁻
Cl₂ + 2e⁻ → 2Cl⁻
Como el cloro es una molécula diatómica por cada cloro que se reduce, tendremos dos cloruros, tomando los 2 electrones que libera el C.
En este caso los electrones están balanceados
Al₂O₃ + C + Cl₂ → CO + 2AlCl₃
Han quedado desbalanceados el C y el O, asi que no queda otra que completar con la estequiometría
Al₂O₃ + 3C + Cl₂ → 3CO + 2AlCl₃
3. H₂S + O₂ → SO₂ + H₂O
El O₂ se está reduciendo, pasando de 0 a -2
El S del ácido se oxida de +2 a +4
O₂ + 4e⁻ → 2O⁻²
Son dos atomos de O, que cada átomo puede atrapar dos electrones, por ende, consigue enlazar 4 electrones en total
S⁺² → S⁴⁺ + 2e⁻
Como los electrones quedaron desbalanceados, completamos multiplicando la segunda semi reaccion x2
2S⁺² → 2S⁴⁺ + 4e⁻
O₂ + 4e⁻ → 2O⁻²
2H₂S + O₂ → 2SO₂ + 2H₂O
Ya que el oxigeno quedó desbalanceado en el lado producto, completamos con la estoquimetría
2H₂S + 3O₂ → 2SO₂ + 2H₂O
Anatoms of an element with atomic number 48 and mass number 120
contains
Which chemical equation below is balanced to follow the Law of Conservation of Mass?
2 H2 + Cl2 > 3 HCl
2 H2 + 2Cl2 > 2 HCl
H2 + Cl2 > 2HCl
H2 + Cl2 > HCl
Answer:
H₂ + Cl₂ → 2HCl
Explanation:
The equation that is balanced and follows the law of conservation of mass is:
H₂ + Cl₂ → 2HCl
Based on the law of conservation of mass "in a chemical reaction, matter is neither created nor destroyed but they combine with one another".
It suggests that the number of species on both sides of the expression must be the same.
For the given reaction:
H₂ + Cl₂ → 2HCl
Reactant side Product side
H 2 2
Cl 2 2
write this number in scientific notation 41, 820, 000
Answer:
4·1×10∧-7Explanation:
[tex]\mathrm {Hey, there!}[/tex]
Let's solve your problem -
The answer to the question is 4.18 10^7.
Here is my clarification/explanation to support:
To convert a standard number to scientific notation, we have to move the decimal point up until we have a 1 digit number.
When we keep moving the decimal point, we get 4.18
Now, we will count the numbers after the 8 to get the 10 area.
There are five numbers after the 8, so we get 10^5.
Now, we will add 2 more to the 5, we get 10^7
Our answer will be: 4.18 10^7
[tex]\mathrm {Best, of, Luck!}[/tex]
A student wants to make a fair comparison of the reactivity of the metals with hydrochloric acid.
Name two variables that must be kept constant.
Answer:
the concentration of the reactants
the temperature in heating
The variable that should be kept constant is the concentration of the reactant and the temperature in heating.
What is hydrochloric acid?Hydrochloric acid (HCl) is called as the muriatic acid represent the colorless corrosive, also the mineral acid should be strong that contains various industrial used also it should be reacted with an organic base it created the hydrochloride salt.
Therefore, we can conclude that The variable that should be kept constant is the concentration of the reactant and the temperature in heating.
Learn more about acid here: https://brainly.com/question/17784856
help me plsssss ))):
Answer:
crushing an ice cube
Explanation:
crushing an ice cube can be redone by freezing it again in its position
true or false: ur hearts a muscle
Answer: True
Explanation:
Help! The products of a chemical equation are CO2 and 2H20. Which set of atoms
must make up the equation's reactants so that the equation models the law
of conservation of mass?
A. 2 C,3 O, and 4 Hg
B. 2 C,2 O, and 3 H
C. 1 Ca, 4 O, and 4 H
D. 1 C, 4 O and 4 H
Answer:
D. 1 C, 4 O and 4 H
Explanation:
a p e x, just took the quiz
According to law of conservation of mass, the set of atoms that must make up the equation's reactants is 1 C, 4 O and 4 H.
What is law of conservation of mass?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.
Law needs to be modified in accordance with laws of quantum mechanics under the principle of mass and energy equivalence.This law was proposed by Antoine Lavoisier in the year 1789.
Learn more about law of conservation of mass,here:
https://brainly.com/question/28711001
#SPJ5
check wether all the answers are correct or not. please?
Answer:
H2+NO3=HNO3
Explanation:
becuase HNO3
What do acids react with in limestone to form giant cave systems?
Answer:
Giant cave systems have formed through the reaction of acids with carbonates the that make up limestone. Caves are formed as a result of dissolution of limestone, through a type of chemical weathering known as carbonation.
Explanation:
.
Answer:
It's C: Carbonates
Explanation:
Its on ed
Which type of bond involves valence electrons constantly moving between atoms, like a sea of electrons?
a. Ionic
b. Covalent
c. Molecular
d. Metallic
my song, you hate me
yeah, lately i was feeling that you hate me its ok though cause i know
yeah, am i in a dream am i awake i cant tell because i feel im about to break
i know im a mistake all i ever ask for is for gods sake i dont apologize because what difference what it make i had all those chances that i did not take
its all my fault i got to behave im trapped in a cage i got to lose all the bad stuff and get in shape all i have to do now is give and take all those things that i said about drowning
in a lake its just hard to replace when you have so much to say to her face i still remember that when she taught me how to tie my shoe lace
yeah, i just want to be the better person the better version im not even learning and that is for certain im in flames im burning and inside im hurting but now i hope i will learn my lesson
Answer:
cool
Explanation:
Answer: I'm sensing depressed vibes... you okay?
Explanation: Your song's nice tho c:
A gas occupies 3.5L at 2.5 kPa pressure. What is the volume at 100 mmHg at the same temperature? Be sure to
show the setup and the final answer and unit.
Show Your Work
The volume at 100 mmHg : 0.656 L
Further explanationBoyle's Law
At a constant temperature, the gas volume is inversely proportional to the pressure applied
[tex]\rm p_1V_1=p_2.V_2\\\\\dfrac{p_1}{p_2}=\dfrac{V_2}{V_1}[/tex]
V₁=3.5 L
P₁=2.5 kPa=18,7515 mmHg
P₂=100 mmHg
[tex]\tt \dfrac{18.7515}{100}=\dfrac{V_2}{3.5}\\\\V_2=\dfrac{18.7515\times 3.5}{100}=0.656~L[/tex]
Describe the role of the ocean in the water cycle?
Answer:
Don't get me wrong the seas are, by distant, the biggest store of water on soil, over 96% of all of Earth's water exists within the seas. Not as it were do the seas give dissipated water to the water cycle, they moreover permit water to move all around the globe as sea streams. I mean, that's all i know man, give me a break.
Explanation:
1) Protons have what kind of charge?
2) Electrons have what kind of charge?
3) Neutrons have what kind of charge?
Igneous rocks are classified by mineral composition and ?
1. How fast it weathers .
2. Sizes of the rock .
3. Texture .
4. Density.
Answer:
3. Texture.
Explanation:
Igneous rocks texture refers to the size of minerals in the rock, which is assessed by how visible they are to the naked eye.
I need someones help
Answer:
y or z one of those two i think its z but im so sorry if im wrong if not z then try y also I learned this last year.
What mass of sulphuric acid can be made from 8g of SO3
(SO3+H2O==>H2S04)
09.8g
18.2g
Answer:
10 g H₂SO₄
General Formulas and Concepts:
Chemistry - Stoichiometry
Reading a Periodic TableUsing Dimensional AnalysisExplanation:
Step 1: Define
Given: 8 g SO₃
RxN: SO₃ + H₂O → H₂SO₄
Step 2: Identify Conversions
Molar Mass of S - 32.07 g/mol
Molar Mass of O - 16.00 g/mol
Molar Mass of H - 1.01 g/mol
Molar Mass of SO₃ - 32.07 + 3(16.00) = 80.07 g/mol
Molar mass of H₂SO₄ - 2(1.01) + 32.07 + 4(16.00) = 98.09 g/mol
Step 3: Stoichiometry
[tex]8 \ g \ SO_3(\frac{1 \ mol \ SO_3}{80.07 \ g \ SO_3} )(\frac{1 \ mol \ H_2SO_4}{1 \ mol \ SO_3} )(\frac{98.09 \ g \ H_2SO_4}{1 \ mol \ H_2SO_4} )[/tex] = 9.80042 g H₂SO₄
Step 4: Check
We are given 1 sig fig. Follow sig fig rules and round.
9.80042 g H₂SO₄ ≈ 10 g H₂SO₄
1. Hermione is trying to replicate the Polyjuice Potion that they created in their second year at Hogwarts. The problem is that she doesn’t have the exact ingredients that she needsandshe is trying to substitute imitation bat wings instead of real bat wings. She knows that they are not as strong as the original so she is making three batches in the same cauldrons over the same fire so she can test which amount of imitation bat wing will work. The potion will turn green when the correct amount is added.
Test (independent) Variable: ___________________________________
Result (dependent) Variable: _______________________________________________
Constants: ____________________________________________
Answer:
A) Test(independent) variable is bat wings.
B) Result (dependent) Variable is the Polyjuice Potion.
C) Cauldrons and fire
Explanation:
A) A test/independent variable is the variable that is being tested in the experiment or research and it is not affected by other variables in the experiment.
Now, in this experiment, what is being tested is are the bat wings.. Thus;
Test(independent) variable is bat wings.
B) Result (dependent) Variable is a variable that depends on the independent variable being tested. From the question, the result is the Polyjuice Potion.
Thus, Result (dependent) Variable is the Polyjuice Potion.
C) The constants are things that don't change with respect to any of the other variables. In this case, they are; cauldrons and fire
Which is the ground- state electron configuration for Neon?
The formula for calculating density, D, is D=MV, where M represents mass and V represents volume. For liquids, volume is often given in cubic centimeters (cc), which is the same as cm 3. If the density of an unknown liquid is 1.6 g/cc, what is the mass of 800 cc of the unknown liquid in grams (g)? 0.002 g 1.6 g 500 g 1280 g
please anwser asap!!!!!!!
Answer:
500g
Explanation:
Just divide by all the numbers and the one that equals 1.6 is the answer
OK HURRY AND PLEASE ANSWER COZ THIS TEST IS TIMED BROS
What is the sum of the coefficients in the balanced chemical equation for the combustion of acetone, C3H6O(l), in air?
Express answer as an integer
Answer:
C3H6O + 4O2 → 3CO2 + 3H2O or 11
Explanation:
Answer:
11
Explanation:
2 The substance has a mass of 0.50 kg.
34 000 J of energy is transferred to the substance to completely melt it.
The temperature of the substance does not change during this time.
Calculate the specific latent heat of fusion of the substance.
Use an equation from the Equations List.
Answer:
68000J/kg
Explanation:
Given parameters:
Mass of the substance = 0.5kg
Quantity of heat transferred to the body = 34000J
Unknown:
Specific latent heat of fusion = ?
Solution:
The specific latent heat is usually involve in phase changes;
H = mL
H is the quantity of heat supplied
m is the mass
L is the specific latent heat
Insert the parameters and solve;
34000 = 0.5 x L
L = [tex]\frac{34000}{0.5}[/tex] = 68000J/kg
Difference between bouyancy and density
Answer:
what She said but better
carbon and tin are both in the fourth column of the table which would you expect to have the greater electronegativity
Answer: Carbon
Explanation:
electronegativity decreases when you go down a column
The study of chemical bonds is called chemistry.
The correct answer is carbon.
The more negative charge present on an atom shows the electronegativity.
The attraction of the nucleus to the proton is also referred to as electronegativity.
The smaller the radius more the electronegativity.
Hence, the correct answer is Carbon as it has fewer atoms and a smaller radius.
For more information, refer to the link:-
https://brainly.com/question/12985618
I need help! Thanks!
Answer:
C. As speed increases, kinetic energy increase exponentially
Explanation:
As you can see on the graph, the further right we move on the x-axis, the higher the values on the y-axis. This means that as one value increases, the other value also increases. The only answer choice that says this is C.
Hope this helps :)
is C because i did it on the quiz
Ernest Rutherford built on the work of previous scientists and improved the accuracy of the atomic model. What part of the atom is Rutherford
credited for discovering?
A.) The protons
B.) The electrons
C.) The nucleus
D.)The electron cloud
What is the chemical equation( formula ) of the reaction of photosynthesis
Answer:
The process of photosynthesis is commonly written as: 6CO2 + 6H2O → C6H12O6 + 6O2.
Explanation:
This means that the reactants, six carbon dioxide molecules and six water molecules, are converted by light energy captured by chlorophyll (implied by the arrow) into a sugar molecule and six oxygen molecules, the products.
What do you think happens to Difluoroethane at –24°C? Provide evidence to support your claim.
Answer:
The following subsections explain the explanation according to the particular circumstance.
Explanation:
The boiling point seems to be the temperature beyond which the working fluid as well as the boiling phase would be at a predetermined pressure or voltage at equilibrium among one another and. The vapor or boiling temperature of 1,1 difluoroethane seems to be -25oC at 1 atm, although as a gas it can remain at a higher temperature around -24oC.gasoline is separated from crude oil by heating it until it reaches it's boiling point. which separation method is used?
Answer:
Fractional distillation
Explanation:
The separation of gasoline from crude oil by heating until it reaches its boiling point is a separation technique called fractional distillation.
It is the separation of a mixture, such as crude oil into their respective fractions. This is achieved due to the differences in boiling point between the constituent fractions in the mixture. As the boiling point of a fraction is reached, it distills out from the column.The reactants in a chemical equation have 3 carbon atoms, 6 oxygen atoms, and 4 hydrogen atoms. In order to follow the conservation of matter, the products of the chemical equation will have
Answer:
The same amount of atoms (3 carbon atoms, 6 oxygen atoms, and 4 hydrogen atoms).
Explanation:
According to the law of conservation of mass, when a chemical reaction takes place there is no synthesis or degradation of matter, that is, matter can be neither created nor destroyed. It can only be transformed.
Therefore, in a chemical reaction the atoms are conserved. That means that the elements that in definite proportions are forming a compound, will reorganize to form new compounds, and the amount and type of atoms of the products will be the same as the reactants.
In summary, if the reactants in a chemical equation have 3 carbon atoms, 6 oxygen atoms, and 4 hydrogen atoms, the products of the chemical equation will have 3 carbon atoms, 6 oxygen atoms, and 4 hydrogen atoms as well.