Answer:
Carbon anodes need to be replaced periodically to avoid oxidation. During the Electrolysis of the Alumina, Oxygen is deposited at the anode. The oxygen reacts with the carbon anodes causing the formation of carbon dioxide. Anode is made up of the graphite (or Carbon), thus carbon reacts with the Oxygen and forms its oxide. As a result of this Oxidation, we need to replace the anode from time to time
Which of the following reactions is balanced?
Answer:
D
Explanation:
Because it has equal number of elements on each side of the arrow
chemical formula is given.
CO→C+O
What does the formula describe?
A.
It describes a mixture being separated by a physical process.
B
It describes an atom being separated by a chemical process.
C
It describes an element being broken down into the atoms from which it was formed.
D
It describes a compound being broken down into the elements from which it was formed.
Answer:
D . It describes a compound being broken down into the elements from which it was formed.
Explanation:
A compound consists of two or more elements chemically combined together in a chemical reaction. The compound carbon monoxide is represented by the chemical symbol, CO. This means that it contains 1 atom of the carbon element and 1 atom of the Oxygen element.
This compound is formed when carbon is directly oxidized in a limited supply of oxygen. In the above reaction, this compound is disintegrated into its individual components, namely, carbon and oxygen.
what is the coefficient for water after the equation is balanced?
Answer:
1
Explanation:
In a titration, a few drops of an indicator are added to a flask containing 35.0 milliliters of HNO3(aq) of unknown concentration. After 30.0 milliliters of 0.15 M NaOH(aq) solution is slowly added to the flask, the indicator changes color, showing the acid is neutralized.
What are the products of this reaction?
Answer:
NaOH(aq) + HNO3(aq)------>NaNO3(aq) + H2O(l)
Explanation:
A thing to note is that an acid and a base will react to form a metal salt + H2O.
~Hope it helps:).
In titration, when [tex]HNO_{3}[/tex] added to NaOH in then it will form [tex]NaNO_{3}[/tex] and water.
What is titration?Titration is just a laboratory technique for determining the concentration of an unknown solution using a solution of given volume and concentration. Between the two solutions, redox reaction or acid-base neutralization occurs, and the known numbers are used to calculate the unknown.
In titration, when [tex]HNO_{3}[/tex] is added in a base like NaOH then it will form it will form [tex]NaNO_{3}[/tex] and water.
The reaction of the titration can be written as:
NaOH + [tex]HNO_{3}[/tex] → [tex]NaNO_{3}[/tex] + [tex]H_{2}O[/tex].
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In the unbalanced chemical equation shown below, what is the coefficient of aluminum (AI) metal?
Al(s) + O2(g) → Al2O3(s)
Answer : A. 3
Explanation:
3Al(s) + 3O2(g) → 3Al2O3(s)
This is the right Answer :3
I hope you are having a great day :3
What is the relative formula mass of a compound?
Answer:
To find the relative formula mass (M r) of a compound, you add together the relative atomic mass values (A r values) for all the atoms in its formula.
Explanation: Find the M r of carbon monoxide, CO. Find the M r of sodium oxide, Na 2O. The relative formula mass of a substance, shown in grams, is called one mole of that substance.
C + O = Co
C + 2O = Co2
law of multiple proportions
sort out
Answer:
"When two or more elements combine to form more than one compound, the mass of one of them, which joins the fixed mass of the other, is in relation to whole numbers and simple" Example: The carbo
Can you pls answer This question
Answer:
a) pentane
b) 1,3-dimethyl butane
c) 3,4-diethyl-5-methlyl heptane
d) 1,3,5-triethyl-2,4,6-trimethyl cyclohexane
Explanation:
The essence of IUPAC nomenclature is to provide a generally accepted nomenclature for chemical compounds which enables the structure of a compound to be drawn from its name without ambiguity.
In order to name straight chain organic compounds, we have to identify the parent chain and then give numbers to the substituents or locants such that they have the lowest possible numbers in alphabetical order.
The correct names of the organic compounds in the question are;
a) pentane
b) 1,3-dimethyl butane
c) 3,4-diethyl-5-methlyl heptane
d) 1,3,5-triethyl-2,4,6-trimethyl cyclohexane
which of the four substances listed will dissolve in water and why?
Answer:
Sugar, sodium chloride, and hydrophilic proteins are all substances that dissolve in water. Oils, fats, and certain organic solvents do not dissolve in water because they are hydrophobic.
And, water is called the "universal solvent" because it dissolves more substances than any other liquid. ... Water molecules have a polar arrangement of the oxygen and hydrogen atoms—one side (hydrogen) has a positive electrical charge and the other side (oxygen) had a negative charge.
I don't see any options so there i hope it helps .
Which of the following statements apply to an ionic bond?
Check all that apply.
O A. It is made of two metal atoms.
B. Electrons are shared equally in it.
O C. It is made of two atoms with a large difference in
electronegativity.
O D. It is made of a positive cation and a negative anion.
Answer:
the result is C and D. those are the ansers
Answer:C & D
Explanation:
Just took the test
which equation is correctly balanced for hydrogen and oxygen reacting to form water?
A. H2+O2–> H2O
B. 2H2+ O2–>2H2O
C. 4H+O2–>2H2O
D. H2+O—> H2O
The correct balanced equation for hydrogen and oxygen reacting to form water is 2H₂ + O₂ ⇒ 2H₂O₂. Therefore, option B is correct.
What is balanced equation ?Chemical equations are symbols and chemical formulas that depict a chemical reaction symbolically. Because mass cannot be generated or destroyed, according to the rule of conservation of mass, a chemical equation must always be in balance.
Equal numbers of atoms from various elements are present in both the reactants and the products in balanced chemical equations.
The left and right sides of the reaction arrow of a balanced equation have an equal number of each type of atom. The reactants and products are placed on the left and right sides of the arrow, respectively, to create a balanced equation.
Thus, The correct balanced equation for hydrogen and oxygen reacting to form water is 2H₂ + O₂ ⇒ 2H₂O₂. Therefore, option B is correct.
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A molecule with one lone pair and three bond pair
▪︎Ammonia
▪︎carbon tetrachloride
choose correct option
It's ammonia (NH3).....
Answer:
A molecule with one lone pair and three bond pair
- Ammonia
what is difference between asexual or sexual reproduction
Explanation:
asexual reproduction involves 1 parent and produces offspring that are genetically identical to each other and parent.
Sexual reproduction involves 2 parents and produces offspring that are genetically unique.
Orange juice is a mixture of several substances, including water, sucrose, and citric acid. If a scientist studies samples of many brands of orange juice, which finding is most likely?
A. The samples contain the same substances in a variety of proportions.
B. The samples contain the same substances in a fixed proportion.
C. The water in each sample has a unique set of properties.
Answer:
A. The samples contain the same substances in a variety of proportions.
Explanation:
Un profesor desea preparar una disolución de agua oxigenada al 20%v/v y dispone solamente de 50 cm3 h2o2 ¿qué volumen d disolución deberá preparar? Con procedimiento
Answer:
250cm³ de disolución se deben preparar
Explanation:
El porcentaje volumen volumen (%v/v) se define como el volumen de soluto -En este caso, H2O2- en 100cm³ de disolución.
Se desea preparar una solución que contenga 20cm³ de H2O2 por cada 100cm³
Como solamente se cuenta con 50cm³ de H2O2, el volumen que se debe preparar es:
50cm³ H2O2 * (100cm³ Disolución / 20cm³ H2O2) =
250cm³ de disolución se deben prepararfind the volume of a gas if 3.6 mols of the gas is at STP
Answer:
81 L gas
General Formulas and Concepts:
Ideal Gas Law
STP (Standard Conditions for Temperature and Pressure) = 22.4 L per mole at 1 atm, 273 KStoichiometry
Using Dimensional AnalysisExplanation:
Step 1: Define
[Given] 3.6 mols gas at STP
[Solve] volume (L) of gas
Step 2: Convert
[DA] Set up: [tex]\displaystyle 3.6 \ mol \ gas(\frac{22.4 \ L \ gas}{1 \ mol \ gas \ at \ STP})[/tex][DA] Multiply [Cancel out units]: [tex]\displaystyle 80.64 \ L \ gas[/tex]Step 3: Check
Follow sig fig rules and round. We are given 2 sig figs.
80.64 L gas ≈ 81 L gas
Cu2O + C -> Cu + CO2 balanced equation
Answer:
2Cu2O + C --> 4Cu + CO2
Explanation
The Law of conservation of Mass states You can not destroy or create math in a chemical reaction, meaning you must have the same amount at the beginning and the end. This equation keeps the same amount of atoms on both sides.
Answer: Yes, it is a balanced equation.
Explanation:
https://chemequations.com/en/?s=Cu2O+%2B+C+%3D+Cu+%2B+CO2
This is where I got the answer so you know. Hope this helps :)
What is the molarity of a sodium hydroxide solution if 25 mL of the solution is neutralized by 69.5 mL of 1.5 M HCl?
Answer:
4.17M
Explanation:
m1v1/m2v2=n1/n2
The diagram shows the water cycle. At point 4, condensation is occurring. How is water changing?
A) Water vapor (gas) is becoming liquid.
B) Water is being stored in the atmosphere.
C) Liquid water in the atmosphere is becoming a gas.
D) Liquid water from the earth's surface is becoming water vapor (gas)
Answer:
water vapor (gas) is becoming liquid
can someone help me with these answer becuz im struggling sorry
Answer:
21.8
Explanation:
add both because there both forces are going down
If a gas occupies 2.3 liters at a pressure of 1.9 atm, what will be its volume at a
pressure of 3.8 atm?
Answer:
Option C (1.2 L) is the correct option.
Explanation:
The given values are:
Pressure,
[tex]P_1=1.9 \ atm[/tex]
[tex]P_2=3.8 \ atm[/tex]
Volume,
[tex]V_1=2.3 \ L[/tex]
[tex]V_2=?[/tex]
As we know,
The gas equation is:
⇒ [tex]PV=nRT[/tex]
At constant temperature,
⇒ [tex]P_1 V_1=P_2 V_2[/tex]
or,
⇒ [tex]V_2=\frac{P_1 V_1}{P_2}[/tex]
By substituting the values, we get
⇒ [tex]=\frac{1.9\times 2.3}{3.8}[/tex]
⇒ [tex]=\frac{4.37}{3.8}[/tex]
⇒ [tex]=1.15 \ L[/tex]
or,
⇒ [tex]=1.2 \ L[/tex]
A solid calcium metal reacts with molecular oxygen.
WORD EQUATION =
CHEMICAL EQUATION =
When something is hot , its atom has more energy
True or False
Will mark as brainliest if the answer is correct
What is the nature of the soil depends on ?
Answer:
Well i dk know this question i think we need soil because plants need soil so they can provide oxegon
Explanation:
La rapidez de una reaccio es 0,450 mol/s ¡cuanto tiempo, en segundos, serán necesarios para que se consuman 0,323 mol de reactivos
Answer:
[tex]tiempo=0.72s[/tex]
Explanation:
¡Hola!
En este caso, como podemos observar, la relación entre la rapidez de reaction, las moles y el tiempo de reacción es:
[tex]rapidez=\frac{mol}{tiempo}[/tex]
De este modo, despejamos el tiempo en esta ecuación para obtener:
[tex]tiempo=\frac{mol}{rapidez}[/tex]
Así, reemplazamos la rapidez y moles dadas para obtener:
[tex]tiempo=\frac{0.323mol}{0.450mol/s}\\\\tiempo=0.72s[/tex]
¡Saludos!
Name the layers of the atmosphere and one fact about each layer.
If 40 grams of NH3 are dissolved in 100 mL of water at 10 degrees Celsius, how many more grams of NH3 would I need to add to make this a saturated solution?
Which one is it?
25 g
30 g
20 g
0 g
how much energy is required to melt 2kg of ice at 0°C?
Answer: Therefore, to melt 2kg of ice 835. 48kJ of heat is required.
Explanation:
I hope this helps!
Which of the following is NOT one of the three main global climate zones?
A. Tropical
B. Latitude
C. Polar
D.Temprate
5. Determine if a precipitation reaction occurs between aqueous silver nitrate and aqueous calcium chloride. If a
precipitation reaction takes place, write a balanced chemical equation, total ionic equation and net ionic
equation for the reaction. Identify any spectator ions.
a. Balanced chemical equation: (3 marks)
b. Total ionic equation: (2 marks)
C. Net ionic equation: (1 mark)
d. Spectator ions: (1 mark)
Answer:
See Explanation
Explanation:
a) In writing the balanced chemical reaction equation, the number of atoms of each element on the right hand side must be the same as the number of atoms of each element on the left hand side. The balanced reaction equation is;
2AgNO3(aq) + CaCl2(aq) ------> 2AgCl(s) + Ca(NO3)2(aq)
b) The total ionic equation shows all the ions present in the reaction system as follows;
2Ag^+(aq) + 2NO3^-(aq) + Ca^2+(aq) + 2Cl^-(aq) ---->2AgCl(s) + Ca^2+(aq) + 2NO3^-(aq)
c) The net ionic equation shows the ions that really participated in the reaction;
2Ag^+(aq) + 2Cl^-(aq) ---->2AgCl(s)
d) The spectator ions didn't undergo any change from left to right in the reaction equation. They include;
NO3^-(aq) and Ca^2+(aq)