Answers
Answer:
\(2,092,000J\)
Explanation:
Hello.
In this case, we need to perform a unit conversion problem between cal and joule, taking into account that 1 cal equals 4.184 joules of energy, therefore, we write the following proportional factor:
\(500,000cal*\frac{4.184J}{1cal}\)
Whereas the 1 cal is written under the line in order to simplify the initial can and the 4.184 J on the line as joules are the required units. Thus, we obtain:
\(2,092,000J\)
As the energy required to burn off such amount of energy given of potato chips.
Best regards.
Related Questions
Of the following regions of the electromagnetic spectrum, which one has the shortest wavelength?
a.
gamma rays
b.
infrared
c.
radio waves
d.
X rays
e.
microwaves
f.
ultraviolet
Answers
Answer:
A ---->gamma ray
Explanation:
Gamma rays have the highest frequencies among all electromagnetic waves and therefore have the shortest wavelengths.
Which structure is the Lewis structure for ammonia (NH3)?
A.
A bond line structure of a compound has N H H H. The nitrogen has two dots at its bottom represents a lone pair of electrons.
B.
A bond line structure of a compound has H N H in the linear plane and hydrogen is branching upward, and the compound is H N (H) H.
C.
A bond line structure of a compound has H N H in linear plane and a hydrogen is branching upward, and the compound is H N (H) H. The nitrogen has two dots at its bottom represents a lone pair of electrons.
D.
A bond line structure of a compound has H N H H. The nitrogen has two dots on its top represents a lone pair of electrons.
Answers
Answer: **
H-N-H
|
H
Explanation:
Look at a periodic table to determine how many electrons you need to account for. Hydrogen (H) only has 1 electron, while Nitrogen (N) has 5. We have three Hydrogen atoms and one Nitrogen atom, so the total number of electrons will be 3 * 1 + 5 = 8 e-.
Now, place the center atom, which will be Nitrogen and place the three Hydrogens on three sides of it as above in the answer. You should use single bonds for this. Each single bond is a pair of electrons, so since we have three single bonds so far, we have accounted for 2 * 3 = 6 electrons. However, we need 2 more electrons for the total of 8. We put these electrons in as a lone pair above Nitrogen.
We check to see if everything follows the octet rule: Nitrogen has three single bonds, so that's 6 e-, as well as one lone pair, so that's another 2 e- for a total of 8 e-. Check. Now look at Hydrogen: H is the only element whose full orbital is 2 e-. Each H has a single bond with Nitrogen, so each does have 2 e-.
Thus, we know this is the correct diagram, and we are done.
Explanation:
A bond line structure of a compound has H N H in linear plane and a hydrogen is branching upward, and the compound is H N (H) H. The nitrogen has two dots at its bottom represents a lone pair of electrons. So ,the correct answer is option C.
The correct Lewis structure for ammonia (\(NH_3\)) is option C. It shows a bond line structure with three hydrogen atoms (H) bonded to a central nitrogen atom (N) in a linear plane.
One hydrogen atom branches upward from the plane. Additionally, the nitrogen atom in this structure has two dots at its bottom, indicating a lone pair of electrons. This arrangement follows the octet rule, as nitrogen has formed three covalent bonds with hydrogen, completing its valence shell. The lone pair on nitrogen gives ammonia its characteristic properties.
Thus, option C accurately represents the Lewis structure of ammonia, showing the bonding and lone pair arrangement of its atoms.
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2210.20 J of energy is equal to how many calories?
Answers
Answer:
528.25 Calories
Explanation:
From the question given above, the following data were obtained:
Energy in Joules = 2210.20 J
Energy in calories =?
We can convert 2210.20 J to calories by doing the following:
4.184 J = 1 cal
Therefore,
2210.20 J = 2210.20 J × 1 cal / 4.184 J
2210.20 J = 528.25 Calories
Thus, 2210.20 J is equivalent to 528.25 Calories.
If silver crystallizes in a FCC unit cell and has a density of 10.6 g/cm3 what is the atomic radius of Silver?
Answers
As a result, the silver atomic radius in an FCC crystal lattice is roughly 1.44 angstroms.
What is the FCC crystal structure's atom count per unit cell?There are 6 atoms in each unit cell of the hexagonal closest packed (HCP), which has a coordination number of 12. Four atoms make up each unit cell of the face-centered cubic (FCC), which has a coordination number of 12.
The following equation can be used to connect the silver crystal's density to its atomic radius (r) and molar mass (M):
density = (4 x M) / [(a)³ x Avogadro's number]
For FCC unit cells, the length of one edge (a) is related to the atomic radius (r) by the following equation: a = 2^(1/2) * r
Substituting this expression for a into the density equation and solving for r, we get:
r = [(3 x M) / (32 x density x pi)]^(1/3)
where pi is the mathematical constant, pi.
The molar mass of silver is approximately 107.87 g/mol.
Substituting the given values into the equation, we get:
r = [(3 x 107.87 g/mol) / (32 x 10.6 g/cm³ x pi)]^(1/3)
= 1.44 angstroms (rounded to two significant figures)
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Wood burning in a fire is a
Physical change or Chemical change
Answers
Which of these statements best identifies the particle that is labeled with an X?
OIt is either a nucleus or a proton.
OIt is either a proton or a neutron.
OIt is either a neutron or an electron.
OIt is either an electron or a nucleus.
Answers
It is either a proton or a neutron . B
How to identify the particle
The particle labeled with an X is a neutral atom or a proton which is symbolically represented as :
AZX
where,
Z = atomic number of the element and is known as the number of protons and number of electron (in the particle)
A = Mass number of the element which is represented as the sum of the protons and neutrons (in the nucleus)
Thus, the statement that best identifies the particle X is that it is either a proton or a neutron
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except for speed, your nervous system is most similar to
A-A metro bus that makes many stops along its route
B-an air trip where you take multiple planes to get to your destination
C-A cruise ship that makes a circular route back home to port
D-a race car speeding down a track, making pit stops occasionally
Answers
Your nervous system is most similar to a cruise ship (option C).
The nervous system is a complex network in the body in charge of:
Automatic responses and movements.Voluntary movements.Responses to the world.This system works due to the action of structures such as:
The brain.The spinal cord.The nerves.Moreover, the nervous system works through the following steps:
A stimulus is received, for example, you accidentally touch a hot surface.This is taken by the nerves to the brain.The brain processes the information and sends a response, for example, to move the hand away from the hot surface.Based on this, the system resembles a cruise ship because signals go from the senses to the brain and then back again similar to a cruise going away and then back to the port.
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Answer:
THIS IS THE CORRECT ANSWER
an air trip where you take multiple planes to get to your destination.
Explanation:
I did the other answer and I got it wrong so this is the correct answer
Hydrogen sulfide gas is a flammable gas. The gas burns with
a blue flame according to the following equation:
2 H₂S (g) + 3 O2 (g) => 2 SO2 (g) + 2 H₂O(g)
5.00 L of hydrogen sulfide gas and 7.00 L of oxygen were
allowed to react.
Calculate the theoretical yield, in L (liters), of sulfur dioxide.
All the gases were at the same temperature and pressure.
Answers
Answer:
4.67 liters of SO2 with sig figs
Explanation:
To do this reaction, we first must find the limiting agent.
in this problem, 5 liters of H2S are reacted with 7 liters of O2, and each two moles of H2S corresponds to 3 moles of O2. Assuming ideal behavior, 1 liter of H2S has the same number of moles as 1 liter of O2 has. So, 2 liters of H2S react with 3 liters of O2. To find the limiting reagent, focus on one reagent and calculate how much of the other reagents would be needed to fully consume that one reagent.
Focus on H2S:
5 liters of H2S would require 7.5 liters of O2 (since each 2 liters of H2S requires 3 liters of O2)
Focus on O2:
7 liters of O2 would require 14/3, or 4.666... liters of H2S.
Since we don't have 7.5 liters of O2 (we only have 7 liters) to react with all 5 liters of H2S, we would say that O2 is the limiting reagent, and that we have 7 liters of it.
Next, figure out how much product can be produced per mole of that limiting reagent. 3 moles of O2 and 2 moles of H2S turns into 2 moles of SO2 and 2 moles of H2O. Thus, the ratio of O2 to SO2 is 3:2
We have 7 liters of O2, and since the ratio of O2 to SO2 is 3:2, we can set up the equation:
7:x = 3:2 where x is the number of liters of SO2
cross multiply (or solve with another method) to get:
x = 14/3, or 4.666... liters of SO2
Convert 100.6 Kelvin to degrees C.
°C = K - 273
[?] °C
Answers
Answer:
-172.6 °C
Explanation:
You want to know the Celsius equivalent of the temperature 100.6 K.
ConversionThe relation is ...
C = K - 273.15
C = 100.6 -273.15 = -172.55
The temperature is -172.55 °C, about -172.6 °C.
__
Additional comment
We have rounded to tenths, because that is precision of the temperature given. If you use 273 as the conversion constant, you will get -172.4.
A sample of helium occupies a volume of 160cm3 at 100 KPa and 25°c. what volume will it occupy if the pressure is adjusted to 80 KPa and the temperature remains unchanged?
Answers
Answer:
Explanation:Explore this page
About the gas laws calculator
This is an ideal gas law calculator which incorporates the Boyle's law , Charles's law, Avogadro's law and Gay Lussac's law into one easy to use tool you can use as a:
Boyle's Law-
\(\:\:\:\:\:\:\:\:\:\:\:\star\:\sf \underline{ P_1 \: V_1=P_2 \: V_2}\\\)
(Pressure is inversely proportional to the volume)
Where-
\(\sf V_1\) = Initial volume\(\sf V_2\) = Final volume\(\sf P_1\) = Initial pressure\(\sf P_2\) = Final pressureAs per question, we are given that -
\(\sf V_1\) = 160 cm³\(\sf P_1\) = 100KPa\(\sf P_2\) = 80KPaNow that we have all the required values and we are asked to find out that volume which will be occupied if the pressure is adjusted to 80 KPa and the temperature remains unchanged. For that we can put the values and solve for the final volume of helium-
\(\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\star\:\sf \underline{ P_1 \: V_1=P_2 \: V_2}\)
\(\:\:\:\: \:\:\:\:\:\:\longrightarrow \sf 100 \times 160 = 80 \times V_2\\\)
\( \:\:\:\:\:\:\:\:\:\:\longrightarrow \sf V_2 = \dfrac{100 \times 160}{80}\\\)
\( \:\:\:\:\:\:\:\:\:\:\longrightarrow \sf V_2 =100\times \cancel{\dfrac{ 160}{80}}\\\)
\(\:\:\:\: \:\:\:\:\:\:\longrightarrow \sf V_2 = 100 \times 2\\\)
\( \:\:\:\:\:\:\:\:\:\:\longrightarrow \sf \underline{V_2 = 200 \:cm^3 }\\\)
Therefore, 200 cm³ will be occupied if the pressure is adjusted to 80 KPa and the temperature remains unchanged.if there is 5 atoms of oxygen in the reactant, how many oxygen atoms must be in the product
Answers
Answer:
5
Explanation:
It requires 20 chracters to fill this answer
Tumu’s class was given an assignment to feature a scientist that contributed to the development of the cell theory. The class decided to use images to feature the scientist of their choice.
Which image would Tumu most likely use in his assignment to feature Rudolf Virchow?
the magnified shapes of cells in a piece of cork
the different cells that make up a plant leaf
the types of cells at work in the human body
the way root cells reproduce to increase root length
Answers
Answer:
The types of cells at work in the human body
Explanation:
Rudolf Virchow was a German physician who is known as the father of modern pathology. He contributed to the development of the cell theory by concluding that all cells come from preexisting cells. This led to the conclusion that diseases occur at the cellular level, which allowed scientists to diagnose diseases more accurately.
Considering that Virchow analyzed human cells, the image that Tumu would be most likely to use in his assignment is the one of the types of cells at work in the human body.
Answer:
D the way root cells reproduce to increase root length
Explanation:
Have a good day!
Let's do this!
Balance each equation so there are the same number of each type of atom on both sides of the
equation There is a chart above each problem to help you count the atoms
First-Count up the
number of atoms you
currently have Write
that number in the
chart for both sides of
the equation
Second-If the
numbers don't match,
try adjusting the
coefficients one at at
time Make sure to
change the number in
the chart
Remember- you can't
change the formulas!
2
Reactants
Mg
M
Mg
LI
Reactants
H
LO +
Products
Mg
N
L
O
H
но →
_Math
Products
LIOH
You should
do this in
pencil
Answers
The balanced chemical equations of the reactions are given below:
1. Mg (s) + 2 H₂O (l) ----> Mg(OH)₂ (s) + H₂ (g)
2. 2 Li (s) + 2 H₂O (l) ----> LiOH (aq) + H₂ (g)
What is a balanced equation?A balanced chemical equation is an equation in which the number of moles of atoms of elements in a given reaction is equal to the sum of the number of moles of atoms of each element that is produced.
A balanced chemical equation is in accordance with the law of conservation of mass which states that matter can neither be created nor destroyed.
When balancing chemical equations, numerical coefficients are added in front of moles of atoms of an element or moles of a given compound taking part in the reaction.
The balanced chemical equation of the reaction of magnesium and water as well as the reaction of lithium and water is given below:
Magnesium and water:
Mg (s) + 2 H₂O (l) ----> Mg(OH)₂ (s) + H₂ (g)
Lithium and water:
2 Li (s) + 2 H₂O (l) ----> LiOH (aq) + H₂ (g)
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19. what is the empirical formula for C36H9?
Answers
The empirical formula for \(C_3_6 H_9\) is \(C_4H\).
Chemical formulas that give only the relative number of atoms of each type in a molecule are called empirical formulas. The subscripts in an empirical formula are always the smallest possible whole-number ratios.
Look at the ratio of these two atoms in the compound
C : H
36: 9
Divide the ratio by 9 to get simple ratio:-
C : H
36/9 : 9/9
4 : 1
For \(C_3_6 H_9\) , the smallest whole number ratio is 4:1. So, the empirical formula for \(C_3_6 H_9\) is \(C_4H\).
So, the empirical formula for \(C_3_6 H_9\) is \(C_4H\).
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The element fluorine forms a(n) _______ with the charge__________ . The symbol for this ion is____________ , and the name is _____________. The number of electrons in this ion is__________
Answers
Answer:
A chemical element exhibiting the symbol F and atomic number 9 is fluorine. It prevails as an extremely toxic pale yellow diatomic gas at normal circumstances and is the lightest halogen. It is exceptionally reactive as it reacts with all the other elements except for helium, argon, and neon, and is the most electronegative element.
Fluorine like halogens produces an anion with a charge of -1 to acquire stability. The symbol for this ion is F-, and the name given to the ion is fluoride ion. The atomic number of fluorine is 9, therefore, the number of electrons in this anion is 9+1 = 10.
Two asteroids are 75,000 m apart one has a mass of 8 x 10^7 N what is the mass of the other asteroid
Answers
The mass of the asteroid is C. 1.2 x \(10^{12}\) Kg
To find the mass of the other asteroid, we can rearrange the equation for the gravitational force between two objects:
F = (G * m1 * m2) / \(r^{2}\)
where F is the force of gravity, G is the gravitational constant, m1 and m2 are the masses of the two asteroids, and r is the distance between them.
Given that the distance between the asteroids is 75000 m, the force of gravity between them is 1.14 N, and one asteroid has a mass of 8 x \(10^{7}\) kg, we can substitute these values into the equation and solve for the mass of the other asteroid (m2):
1.14 N = (6.67430 × \(10^{-11}\) N \(m^{2}\)/\(Kg^{2}\) * 8 x \(10^{7}\) kg * \(m2\)) / \((75000 m)^{2}\)
Simplifying and solving the equation, we find that the mass of the other asteroid (m2) is approximately 1.2 x \(10^{12}\) kg. Therefore, Option C is correct.
The question was incomplete. find the full content below:
Two asteroids are 75000 m apart one has a mass of 8 x \(10^{7}\) kg if the force of gravity between them is 1.14 what is the mass of the asteroid
A. 3.4 x \(10^{11}\) kg
B. 8.3 x \(10^{12}\) kg
C. 1.2 x \(10^{12}\) kg
D. 1.2 x \(10^{10}\) kg
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In a compound the elements are _____ together, whereas in a mixture the substances are blended together.
Answers
Answer:
bonded
Explanation:
Compounds are two elements bonded together.
A mixture is multiple substances blended together. The substances aren't bonded together and can easily be extracted from each other.
Which of the following is a Arrhenius base?
A.) NaNo3
B.) Hr
C.) CH4
D.) Al(OH)
Answers
The Arrhenius bases among the given options are Ba(OH)2 and KOH. Arrhenius bases are substances that, when dissolved in water, release hydroxide ions (OH-) as the predominant species.
This is an Arrhenius base. When Ba(OH)2 is dissolved in water, it dissociates into Ba2+ ions and hydroxide ions (OH-). The hydroxide ions make it a base.
HClO is not an Arrhenius base. It is a weak acid, known as hypochlorous acid, and releases protons (H+) when dissolved in water. KOH is an Arrhenius base. When KOH is dissolved in water, it dissociates into K+ ions and hydroxide ions (OH-). The presence of hydroxide ions makes it a base.
Therefore, the Arrhenius bases among the given options are Ba(OH)2 and KOH.
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What occurs after cytokinesis is completed at the end of meiosis I?
O Four haploid cells are formed.
O Two diploid cells are formed.
OTwo haploid cells are formed.
O Four diploid cells are formed.
Answers
Answer. After cytokinesis is completed at end of meiosis - I two haploid cells are formed.on:
Answer:
C. TWO HAPLOID CELLS ARE FORMED
Explanation:
I TOOK THE EDGUNITY TEST AND I GOT IT CORRECT
Due today please answer! Can we better understand plastics by using Periodic Table?
Answers
Answer is in a photo. I can only upload it to a file hosting service. link below!
bit.\(^{}\)ly/3a8Nt8n
Answer:
I think not
Explanation:
Plastics can be understand through the knowledge of its types and structure than periodic table.
Which chemical equation is unbalanced?
C + O2 Right arrow. CO2
Sr + O2 Right arrow. 2SrO
6H2 + 3O2 Right arrow. 6H2O
H2 + H2 + O2 Right arrow. H2O + H2O
Answers
Answer:
Sr + 02 Right arrow.2Sr0
Answer:
b
Explanation:
The pOH of a solution is 6.0. Which statement is correct?
Use pOH = -log[OH-] and PH+pOH = 14.
The pH of the solution is 20.0.
O The concentration of OH ions is 1.0 x 108 M.
The concentration of OH ions is 1.0 x 106 M.
O The pH of the solution is 8.0.
A
Answers
At pOH value of 6.0 the pH value of the following solution is 8.0 and the concentration of [\(H^{+}\) ] ion is \(10^{-8}\)
In this question we will apply the formula
pH +pOH = 14 . . . . . . . . . . . . .(1)
where pH = concentration of [\(H^{+}\) ] ion
pOH = concentration of [\(OH^{-}\) ] ion
As per the question
pOH =6.0
Putting the value of pOH in equation (1) we get the value of pH
pH + 6.0 =14
pH = 14 -6.0
pH = 8.0
The value of pH if the pOH value is 6.0 is 8.0
To find the concentration of \(H^{+}\) ion we will use the following formula
This is calculated by the formula
[\(H^{+}\)} = \(10^{-pH}\)
where we will write the values of pH
Hence the concentration of [\(H^{+}\)} ion is \(10^{-8}\)
Therefore at pOH of 6.0 the pH value of the following solution is 8.0 and the concentration of [\(H^{+}\) ] ion is \(10^{-8}\)
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The complete question is -
What is the pH value and concentration of [\(H^{+}\) ] ion of the following if the pOH value of the solution is 6.0 ?
80. When water forms ice, hydrogen bonds around a water molecules are at ... apart.
1.
30 °C
2. 45 °C
3.
90 °C
4.
180 °C
5. 35 °C
6. I do not know.
N
Answers
Answer:
6
Explanation:i dont know
What is the relationship between cubic centimeters and milliliters?
Answers
Answer:
• One cubic centimeter is the same volume as 1 Millimetre .
EXPLANATION :- • The relationship between cubic centimeters and Millimetre :-These are the same measurement .
There is no difference in volume.
The primary difference is that milliliters are used for fluid amounts while cubic centimeters are used for solids.
No matter what is being measured .
Hope this helps !!find protons neutrons and electrons of 60Co+3
Answers
how many moles are in 22 grams of argon
Answers
Answer:
0.551 moles
Explanation:
To calculate the number of moles in 22 grams of argon, divide the mass by the molar mass:
Number of moles = Mass / Molar mass
Number of moles = 22 g / 39.95 g/mol
Number of moles ≈ 0.551 moles
Therefore, there are approximately 0.551 moles of argon in 22 grams of argon.
The scientific method is great, but how do you think we answer the questions which cannot be tested with an experiment?
Answers
Answer:
We do something called hypothesis
Answer:
1. Make an observation.
2. Ask a question.
3. Propose a hypothesis.
4. Make predictions.
5. Test the predictions.
6. Iterate.
and if it can't be trsted the you did something wrong
Explanation:
The scientific method
At the core of biology and other sciences lies a problem-solving approach called the scientific method. The scientific method has five basic steps, plus one feedback step:
Make an observation.
Ask a question.
Form a hypothesis, or testable explanation.
Make a prediction based on the hypothesis.
Test the prediction.
Iterate: use the results to make new hypotheses or predictions.
The scientific method is used in all sciences—including chemistry, physics, geology, and psychology. The scientists in these fields ask different questions and perform different tests. However, they use the same core approach to find answers that are logical and supported by evidence.
Scientific method example: Failure to toast
Let's build some intuition for the scientific method by applying its steps to a practical problem from everyday life.
2. Which state of matter is characterized by particles that are close to each other but are not arranged in a definite pattern?
A)liquid
B)plasma
C)solid
D)gas
Answers
Answer:
Solid
Explanation:
Cus its solid, take a brick for example. It's hard and has no space unlike liquid or gas.
Question 20 (1 point) ✓ Saved A short circuit can cause ________ because there is nothing in the circuit to limit the current and absorb the electrical energy. Heat builds up quickly in the wire and power supply. (Lesson 4.05) an explosion a release of harmful chemicals a fire All of the above
Answers
A short circuit can cause giant spark ,because there is nothing in the circuit to limit the current and absorb the electrical energy. Heat builds up quickly in the wire and power supply. (Lesson 4.05) an explosion a release of harmful chemicals a fire All of the above
What is Circuit?
The point where the electrons enter the electrical circuit is known as the source, and the point where they depart is known as the return. Let's do a little experiment; you'll require the following:
Electrical tape, wire, and electric bulbs
power source
Only when there is at least one closed loop running from the positive to the negative end of the circuit is it considered complete. This is the most basic type of electrical circuit. A television's internal circuit is more intricate and made up of several parts
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A 0.2 g sample of pyrolusite is analyzed for manganese content as follows. Add 50.0 mL of 0.1 M solution of ferrous ammonium sulfate to reduce the MnO2 to Mn2 . After reduction is complete, the excess ferrous ion is titrated in acid solution with 0.02 M KMnO4, requiring 15.0 mL. Calculate the percent manganese in the sample as Mn3O4.
Answers
Answer:
66.7%
Explanation:
The reaction for the titration of the excess ferrous ion is:
5Fe⁺² + MnO₄⁻ + 8H⁺ → 5Fe³⁺ + Mn²⁺ + 4H₂OWe calculate the moles of Fe⁺² from the used moles of KMnO₄:
0.02 M * 15.0 mL = 0.30 mmol KMnO₄0.3 mmol KMnO₄ * \(\frac{5mmolFe^{+2}}{1mmolKMnO_4}\) = 1.5 mmol Fe⁺²Then we substract those 0.30 mmol from the original amount used:
0.1 M * 50.0 mL = 5.0 mmol Fe⁺²5.0 - 1.5 = 3.5 mmol Fe⁺²The reaction between ferrous ammonium sulfate and MnO₂ is:
2Fe⁺² + MnO₂ + 4H⁺ → 2Fe³⁺ + Mn²⁺ + 2H₂OSo we convert those 3.5 mmol Fe⁺² that were used in this reaction to MnO₂ moles:
3.5 mmol Fe⁺² * \(\frac{1mmolMnO_2}{2mmolFe^{+2}}\)= 1.75 mmol MnO₂Then we convert MnO₂ to Mn₃O₄, using the reaction:
3MnO₂ → Mn₃O₄ + O₂1.75 mmol MnO₂ * \(\frac{1mmolMn_3O_4}{3mmolMnO_2}\) = 0.583 mmol Mn₃O₄Finally we convert Mn₃O₄ moles to grams:
0.583 mmol Mn₃O₄ * 228.82 mg/mmol = 133.40 mg Mn₃O₄And calculate the percent
0.2 g = 200 mg133.40 / 200 * 100% = 66.7%