HCOOH + MnO, CO, + Mn2+ (in acidic solution) *
Answers
Step 1: Separate the whole reaction into two half-reactions
HCOOH → CO2 MnO4- → Mn2+
Step 2: Balance the non-hydrogen and non-oxygen elements first
HCOOH → CO2 MnO4- → Mn2+
(C is balanced) (Mn is balanced)
Step 3: Balance oxygen by adding H2O(l) to the side that needs oxygen (1 O : 1 H2O)
HCOOH → CO2 MnO4- → Mn2+ + 4H2O
Step 4: Balance hydrogen by adding H+ to the side that needs hydrogen (1 H: 1 H+)
HCOOH → CO2 + 2H+ 8H+ + MnO4- → Mn2+ + 4H2O
Step 5: Balance the charges: add electrons to the more positive side (or less negative side)
HCOOH → CO2 + 2H+ 8H+ + MnO4- → Mn2+ + 4H2O
Reactants Products Reactants Products
HCOOH = 0 2H+ = +2 8H+ =+8 Mn2+ =+2
__MnO4- = -1________________________
Overall = 0 +2 +7 overall = +2
+2e- +5e-
0 +2
Step 6: Balance electrons on the two half-reactions
5[HCOOH → CO2 + 2H+ +2e-]
2[5e- + 8H+ + MnO4- → Mn2+ + 4H2O]
5HCOOH → 5CO2 + 10H+ + 10e-
10e- + 16H+ + 2MnO4- → 2Mn2+ + 8H2O
Step 7: Get the overall reaction by adding the two reaction.
5HCOOH → 5CO2 + 10H+ + 10e-
10e- + 16H+ + 2MnO4- → 2Mn2+ + 8H2O
5HCOOH + 6H+ + 2MnO4- → 2Mn2+ + 8H2O + 5CO2
Balanced Redox Reaction:
5HCOOH + 6H+ + 2MnO4- → 2Mn2+ + 8H2O + 5CO2
Related Questions
Explain the difference between elements and compounds.
Answers
Answer:
Elements are pure substances which are composed of only one type of atom. Compound are substances which are formed by two or more different types of elements that are united chemically in fixed portions.
will give brainly if correct
Answers
Answer:
3.4 mol Li2SO4
Explanation:
6.8 mol LiOH × (1 mol Li2SO4/2 mol LiOH)
= 3.4 mol Li2SO4
Answer:
3.4 mol Li2SO4
Explanation:
6.8 mol LiOH × (1 mol Li2SO4/2 mol LiOH) = 3.4 mol Li2SO4
is the reaction possible
Copper + Zinc ➡️ Copper sulphate + Zinc
is it possible or not possible
Answers
Answer: Copper and Zinc --> Copper Sulphate is possible
Explanation:
Jupiter revolves around the sun in a predictable pattern because
Answers
What happens when an electron drops back down the ladder to the ground state
Answers
the form of energy that your lunch represents is?
A) electrical
B) chemical
C) thermal
D) nuclear
Answers
An object has a mass of 20 g and volume of 10 cm3. Enter the numerical value for the density of the object in units of g/cm3.
Answers
Answer:2g/cm3 is ur answer, hope this helps :)
Explanation: when solving for the density, the formula would be d=m(mass)/v(volume). therefore you need to take the volume and divide that into the mass to get density. in this case your mass is 20 and volume is 10. so you divide those two and you will get your answer of 2g/cm3.
In "An Inconvenient Truth" Gore described the shape of the CO2 curve - a. Who did Al Gore reference as his mentor who first made measurements and showed him this curve?
Answers
In "An Inconvenient Truth," Al Gore referenced his mentor, Roger Revelle, as the scientist who first made measurements and showed him the \(CO_{2}\) curve.
Roger Revelle, the mаn who begаn tаking meаsurements of \(CO_{2}\) concentrаtions in the аtmosphere in the lаte 1950s, wаs а mentor to former US Vice President Аl Gore. Аl Gore cited Revelle аs his primаry teаcher in the field of globаl wаrming in the documentаry "Аn Inconvenient Truth".
In the lаte 1950s, Revelle, together with Chаrles Dаvid Keeling, begаn tаking meаsurements of аtmospheric \(CO_{2}\) concentrаtions in the remote Mаunа Loа Observаtory in Hаwаii. The Keeling Curve, which wаs nаmed аfter Chаrles Dаvid Keeling, depicts the rise in \(CO_{2}\) concentrаtions in the аtmosphere аs а result of humаn аctivity over time.
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Calcium carbonate decomposes in this balanced equation:
CaCO3 CaO + CO2 ΔH = +110 kJ/mol
Answers
The decomposition of calcium carbonate is an endothermic reaction.
The given equation for the decomposition of calcium carbonate is:
CaCO₃ → CaO + CO₂
ΔH = +110 kJ/mol
where ΔH is the enthalpy change for the reaction.
The positive value of ΔH in the equation indicates that the reaction is endothermic, meaning that heat is absorbed by the reactants from the surroundings during the reaction. This means that the reaction requires an input of energy to proceed, and the products (CaO and CO₂) have higher potential energy than the reactant (CaCO₃).
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--The complete question is, Calcium carbonate decomposes in this balanced equation:
CaCO3 + CaO + CO2 ΔH = +110 kJ/mol
Is this reaction endothermic or exothermic?--
Un mol de amoniaco Tiene una masa molar de 17 g y ocupa un volumen de 22.4 l qué volumen ocupa el 50 g amoniaco en condiciones normales de temperatura y presión
Answers
Answer:
V = 65.81 L
Explanation:
En este caso, debemos usar la expresión para los gases ideales, la cual es la siguiente:
PV = nRT (1)
Donde:
P: Presion (atm)
V: Volumen (L)
n: moles
R: constante de gases (0.082 L atm / mol K)
T: Temperatura (K)
De ahí, despejando el volumen tenemos:
V = nRT / P (2)
Sin embargo como estamos hablando de condiciones normales de temperatura y presión, significa que estamos trabajando a 0° C (o 273 K) y 1 atm de presión. Lo que debemos hacer primero, es calcular los moles que hay en 50 g de amoníaco, usando su masa molar de 17 g/mol:
n = 50 / 17 = 2.94 moles
Con estos moles, reemplazamos en la expresión (2) y calculamos el volumen:
V = 2.94 * 0.082 * 273 / 1
V = 65.81 LPLEASE HELP ASAP :)
Which electrode is the anode in a galvanic cell?
A. The electrode that removes ions from solution
Ο Ο
B. The electrode with the highest reduction potential
C. The electrode where a reduction reaction occurs
O O
D. The electrode with the highest oxidation potential
SUBMIT
Answers
Answer:
D
Explanation:
I just took the quiz on a pex
The electrode is the anode in a galvanic cell should be option d. The electrode with the highest oxidation potential.
What is an electrode?The electrode should be lies in the left half-cell to represent the anode since oxidation should be arise here.
Here the flow of anions should be in the salt that bridges towards it. In the right half-cell that represent the cathode since the reduction arise here.
Hence, the option d is correct.
And the rest of the options are wrong.
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( multi choice) ( science)
What are the ways that oxygen enters our body?
A. nose
B. mouth
C. ears
D. eyes
Answers
Answer:
you can also get oxygen from the mouth but you get more from the nose so i would chose nose
Whats the best red waterproof lipstick? Need some help :)
Answers
\(\(\blue{\rule{40pt}{900000000pt}}\)\)
The key point when trying to speed
up the dissolving process is to
increase the
A)contact between the solvent and
solute
B)amount of solvent used in the
solution
Answers
Answer:
B
Explanation:
This because increasing the solvent increases the solubility product of the disolving substance
The melting point X of a certain specimen be assumed to be a continuous random variable which is uniformly distributed over the interval [110, 120]. Find density function of X, mean of X, variance of X and P (112 x < 115.).
Answers
Density function: f(x) = 1/10, for 110 ≤ x ≤ 120, and f(x) = 0 otherwise.
Mean: μ = 115.
Variance: σ^2 = 25/3.
Probability: P(112 < X < 115) = 0.3.
Given that the melting point X is uniformly distributed over the interval [110, 120], we can find the density function, mean, variance, and probability as follows:
1. Density function:
Since X is uniformly distributed, the density function f(x) is constant within the interval [110, 120] and zero outside that interval. To find the density function, we need to determine the height of the constant density.
The total length of the interval is 120 - 110 = 10.
Since the density function is constant, the area under the density function curve must be equal to 1.
Therefore, the height of the constant density is 1 divided by the length of the interval: f(x) = 1/10, for 110 ≤ x ≤ 120, and f(x) = 0 otherwise.
2. Mean:
The mean (μ) of a uniform distribution is the average of the endpoints of the interval. In this case, the mean is (110 + 120) / 2 = 115.
3. Variance:
The variance (σ^2) of a uniform distribution is calculated using the formula: σ^2 = (b - a)^2 / 12, where a and b are the endpoints of the interval. In this case, the variance is (120 - 110)^2 / 12 = 10^2 / 12 = 100/12 = 25/3.
4. Probability:
To find P(112 < X < 115), we need to calculate the area under the density function curve between the points 112 and 115.
Since the density function is constant within the interval [110, 120], the probability is equal to the ratio of the length of the interval [112, 115] to the length of the entire interval [110, 120].
The length of the interval [112, 115] is 115 - 112 = 3.
The length of the entire interval [110, 120] is 120 - 110 = 10.
Therefore, P(112 < X < 115) = (3 / 10) = 0.3.
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Which molecular solid would have the lowest boiling point?
A. One with induced dipole attractions
B. One that has hydrogen bonding
C. One with dipole-dipole attractions
D. One made of polar molecules
Answers
The molecular solid that has the lowest boiling point is ; ( A ) One with induced dipole attractions
Induced dipole attraction is a weak dipole force of attraction that occurs whenever a polar molecule induces a dipole in a nonpolar substance thereby distablizing the electron arrangement previously present in the nonpolar substance.
Nonpolar Substances that undergoes induced dipole attraction will have its boiling point lowered due the electron arrangement destabilization it experiences.
Hence we can conclude that the molecular solid that has the lowest boiling point is One with induced dipole attractions.
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Just give me the answer lol
Answers
Answer:
what is the question?
Explanation:
if you tell me ill update it if i got the info
Explain why the reaction between lead oxide and carbon is called a redox reaction.....
Answers
Answer:
Explanation:
It's called a Redbox reaction because when a change in oxidation number occurs in a reaction, with both an increase in number and a decrease in number, then the reaction is classified as redox. If this doesn't occur, then the reaction is non- redox.
Mark as brainliest if useful
What is called scientist name of potato
Answers
Answer:
name is Solanum tuberosum.
Explanation:
HOPE IT HELPS YOU
Answer:
I am very sure its Solanum
The sequence at the 3' terminal of a tRNA molecule, where the amino acid is bound is Submit Answer Retry Entire Group 9 more group attempts remaining
Answers
The sequence at the 3' terminal of a tRNA molecule, where the amino acid is bound, is called the CCA sequence. This sequence is highly conserved among tRNAs and plays a crucial role in the translation process.
The CCA sequence serves as a binding site for the amino acid during tRNA charging, which is the process of attaching the appropriate amino acid to the tRNA molecule. The aminoacyl-tRNA synthetase enzymes recognize the CCA sequence and attach the specific amino acid to the 3' end of the tRNA molecule, forming an aminoacyl-tRNA complex. This complex then participates in protein synthesis, where the tRNA delivers the amino acid to the ribosome, allowing for the formation of the polypeptide chain.
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What is the pOH of water?
Answers
Answer:
A. 7
(assuming the water is neutral)
Write a brief passage describing a neutral atom of
nitrogen-14 (N-14). Describe the number of
protons, neutrons, and electrons in the atom,
where each type of particle is located, and how
the terms atomic number, mass number, and
atomic mass are related to the particles. Use the
periodic table to help you.
Answers
Answer:
The atomic number is specific to an element, and the element with atomic number 7 is Nitrogen.
Atomic number is equal to the number of protons or number of electrons for aa neutral atom.
Mass number is the sum of number of neutrons and number of protons.
Atomic mass is the sum of masses of all protons and neutrons.
Protons and neutrons are located in the nucleus. Electrons are located outside the nucleus in the shells.
atomic number = Number of protons = number of electrons = 7
Mass number = number of neutrons + number of protons = 14
Number of neutrons = Mass number - number of protons = 14 - 7= 7
Answer:
It contains seven protons in the nucleus.
It contains seven neutrons in the nucleus.
It contains seven electrons in orbitals around the nucleus.
Its atomic number is its number of protons.
Its atomic mass is the mass of protons and neutrons.
Explanation:
on edg 2021
If you have 10 protons and 11 neutrons, in a electrically neutral atom, How many electrons would you have?
Answers
Answer:
Well, you'd have 1 electron more than protons (since there are 10 protons and 11 electrons). So the previously neutral ion has now become an ion with a -1 charge
The antibiotic prontosil, developed by bayer pharmaceuticals in 1932, was used in saving the life of president roosevelt's son from severe strep throat in 1936. protonsil consists of two nitrogens bonded together in a double bond. the left nitrogen is bonded to a benzene ring where the para position contains a sulfur double bonded to two oxygen atoms and single bonded to n h 2. the right nitrogen is bonded to a benzene ring where one ortho and the para position each have an n h 2 substituent. substituent prontosil is an azo dye, which can be prepared from an aryldiazonium ion and an aromatic compound. draw the structures of the diazonium ion and the coupling component for this drug
Answers
Prontosil is a compound produced by the coupled reaction of an aryldiazonium ion and an aromatic compound.
What are diazonium compounds?
These are organic compounds in which there are ionic interactions between the azo group (-N₂⁺) and an anion X⁻.
The general structure is RN₂⁺X⁻.
R is the lateral chain that might be an aromatic ring, among other options.N₂⁺ is the azo groupX⁻ is the anionThe azo group characterizes as being unstable and reactive. This property is because one of the N atoms has a positive charge.
-N⁺≡ N
What is the coupling reaction of aryldiazonium compounds?Aryldiazonium salt reactions can occur in two ways,
Substitution reactionsCoupling reactionsCoupling reactions are the aromatic electrophilic substitution, where the aryldiazonium ion acts as an electrophile for an activated aromatic compound to attack it.
The coupling reaction occurs at the azo group level.
In the exposed example,
the benzene ring with sulfur bonded to oxygen atoms is the coupling componentthe benzene ring with NH₂ and the azo group is the diazonium ionIn the attached files you will find the drawings.
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calculate the ph of a solution having [OH-] = 8.2 x 10 ^-8M
Answers
Answer:
6.91Explanation:
To find the pH we must first find the pOH
The pOH can be found by using the formula
pOH = - log [ {OH}^{-} ]
We have
\(pOH = - log(8.2 \times {10}^{ - 8} ) \\ = 7.086186...\)
pOH = 7.09
Next we use the equation
pH = 14 - pOH
We have
pH = 14 - 7.09
We have the final answer as
6.91Hope this helps you
Describe some of the solutions that engineers might propose for maximizing the percent yield of hydrogen from discarded wood.
Answers
A possible solution for maximizing the percentage of hydrogen in discarded wood is to design a machine that can collect more effectively all the gases and separate hydrogen from other gases.
How do people produce hydrogen using discarded wood?Discarded wood and other products can still produce important elements nitrogen, methane, and hydrogen. This is possible through combustion that releases these elements in a gas.
What is the limitation of this method?This is a new method and it is still not completely developed. Due to this, the equipment is not as efficient as one would like, for example, all gases are initially collected together but this is a problem if only one gas is needed.
Based on this, a potential solution would be to create a machine that is more efficient in collecting and separating the gases.
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Given the reaction:
2C2H6 + 702 -> 4C02 + 6H20
What is the total number of CO, molecules produced when 0.15 moles of C2H6 is consumed?
Give 2 decimal places in your answer and give only the number before the " x10?3" portion of the answer. Example: If your answer to the problem was 6.02 x 1023 you would enter 6.02 in the answer box.
55°F Clear
Answers
The number of the molecules of CO2 that is produced is 1.81 * 10^23 molecules
How is stoichiometry used in reaction?Stoichiometry is the study of the quantitative relationships between reactants and products in a chemical reaction. It is used to determine the amount of products that can be formed from a given amount of reactants, and vice versa.
If 2 mols of C2H6 produces 4 moles of CO2
0.15 moles of C2H6 will produce 0.15 * 4/2
= 0.3 moles
If 1 molecule contains 6.02 * 10^23 molecules
0.3 moles will contain 0.3 * 6.02 * 10^23 molecules/1 molecule
= 1.81 * 10^23 molecules
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the mass in grams of one mole of any pure substance is called its
Answers
Answer:
this
Explanation:
Molar mass also called Atomic mass is the atomic weight. You can find this on the periodic table.
-
-
The answer would be
A. the mass in grams of one mole of a substance
guyz help me !!! what is pasteurization please don't copy from google
Answers
Answer:
Pasteurization:
It is the process in which any beverage such as milk or any other liquid is heated at a certain temperature to kill the bacteria and microorganisms that can cause spoilage or fermentation or any other disease.
Which of the following is true about limiting and excess reagents?
Links are reported
Answers
Answer:
the first one
Explanation:
I take this subject