2 Fe2S3 +902 - 2 Fe2O3 + 6 SO2
When 1.31 moles of Fe2S3 reacts with 22.8 moles of O2, how many moles of SO2 are formed
Answers
Answer:
3.93 mol
Explanation:
The balanced equation is given as;
2 Fe₂S₃+ 9 O₂ --> 2 Fe₂O₃ + 6 SO₂
From the reaction;
2 mol of Fe₂S₃ reacts with 9 mol of O₂ to form 6 mol of 6 SO₂
This means;
1 mol of Fe₂S₃ requires 9/2 mol of O₂
Also,
1 mol of O₂ requires 1/9 mol of Fe₂S₃
In the question, we have;
1.31 moles of Fe2S3 and 22.8 moles of O2
The limiting reactant which determine how much of the product formed is; Fe₂S₃ because O₂ is in excess.
The relationship between Fe₂S₃ and SO₂ is;
2 mol Fe₂S₃ produces 6 mol of SO₂
1.31 mol of Fe₂S₃ would produce x mol ?
2 = 6
1.31 = x
x = 6 * 1.31 / 2 = 3.93 mol
Related Questions
Rob is in charge of waxing the floor at the local mall. He wants to test a new brand of floor wax called Squeaky Clean. Rob waxes 20 floor tiles with Squeaky Clean and 20 tiles with the original wax brand. After one week he counts the number of scratches on the floor
Answers
After one week he counts the number of scratches on the floor it is the independent variable.
An independent variable is one whose values are altered by the researcher to achieve the desired results.
The variable is known as the dependent variable when its values change in response to changes in the independent variable's values.
The dependent variable serves as the experiment measure while the independent variable controls the experiment.
The dependent variable is an effect of the independent variable, which is a cause.
In a linear regression, we can state that "y" stands for the dependent variable and "x" for the independent variable.
While the dependent indicates the influence of changes in the independent variable, the independent depends on nothing.
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Calculate the approximate volume of a 0.600 mol sample of gas at 15 °C and a pressure of
1.0 atm.
Answers
1) List known values.
sample: 0.600 mol
Pressure: 1.0 atm
Temperature: 15ºC
Constant: 0.082057 L⋅atm⋅K−1⋅mol−1
List unknown values
Volume:
2) Set the equation and solve for V.
\(PV=\text{nRT}\)\(\frac{PV}{P}=\frac{nRT}{P}\)\(V=\frac{nRT}{P}\)3) Converting to proper units.
15ºC + 273.15 = 288.15 K
4) Plug in known values.
n: 0.600 mol
R: 0.082057 L⋅atm⋅K−1⋅mol−1
T: 288.15 K
P: 1.0 atm
\(V=\frac{(0.600\text{mol)}(0.082057L\cdot\text{atm}\cdot K^{-1}\cdot mol^{-1})(288.15\text{ K)}}{1.0\text{ atm}}=14.18683\text{ L}\)The sample will occupy a volume of 14.19 L.
GIVE REASON:-
Ammeter is connected in series and voltmeter is connected in parallel to the electric load in an electric circuit .
Answers
Answer:
An ammeter is a device that is used to measures the amount of current flowing in a circuit and a voltmeter measure electric potential difference in an electric circuit between two points.
An Ammeter is connected in series because of its low resistance capacity and it will be connected in parallel it can get damaged due to high current. A voltmeter is connected in parallel in an electric circuit because the potential difference remains the same when connected in parallel.
Helium (He), oxygen (O), carbon (C) fluorine (F), and chlorine (Cl) are all nonmetals. Using the periodic table, which pair of nonmetals do you predict has the most similar properties, and why
Answers
Answer:
fluorine (F), and chlorine (Cl) because they are both halogens and belong to the same group in the periodic table
Explanation:
The pair of non - metals in the elements given that will have similar properties are chlorine and Fluorine.
This is because they both are elements commonly known by the group name Halogens which belong to group 7A.
Properties of halogens include;
- They are very reactive, have single covalent bonds and readily form other compounds.
- In the gaseous state, they will form diatomic covalent molecules.
Whereas, helium is a group 8 element, oxygen is a group 6 element while carbon is a group 4 element.
i really need help with the first two fill in the blanks
Answers
How would you express .002 molecules of CO2 per hundred molecules of air as a concentration? -20 parts per hundred thousand -20 parts per million -2 parts per thousand -2 parts per million
Answers
According to the concept of significant figures,0.002 molecules of CO₂ per hundred molecules of air are expressed as a concentration as 2 parts per thousand .
What are significant figures?Significant figures are used for establishment of a number which is presented in the form of digits. These digits give a meaningful representation to the numbers.
The significant figures are the significant digits which convey the meaning according to the accuracy. These provide precision to the numbers and hence are called as significant numbers.There are rules for counting significant figures which are as follows:
1)All non-zero digits are significant .
2)All zeroes which occur between non-zero digits are significant.
3)All zeroes to the left and right of a non-zero digit are not significant.
4) All zeroes on right of decimal are significant if a non-zero number follows them.
5)All zeroes on right side of non-zero digit are significant.
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Help ASAP! 50pts! Brainliest for best answer!
The length of a bond, between two atoms, is the distance between the two nuclei of the atoms that is the point of ________.
Covalent inclusion
Maximum Energy
Minimum Energy
Nuclear fission
Answers
Answer:
Covalent
Explanation:
What type of solid
does this particle
model represent?
A. ionic
C. molecular
B. metallic
D. network
Answers
Answer:molecular
Explanation: got it right on acellus
The type of solid this particle model represents is a molecular solid.
Molecular solids are a type of solid composed of individual molecules held together by intermolecular forces. Unlike ionic solids or metallic solids, where the bonding is primarily due to strong electrostatic forces or delocalized electrons, respectively, molecular solids are held together by relatively weaker intermolecular forces.
In molecular solids, the individual molecules are discrete entities that retain their molecular structure even in the solid state.
Therefore, the correct option is option C
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salt plus water. two compounds mixed together to form a solution. The water is the solvent; the salt is the solution. students have been tasked with separating the two compound from solution.
Answers
Answer:
Evaporation
Explanation:
Students are to mix the solvent to dilute completely,and get and evaporation dish,candle(heat),tripod stand...pour the solution in the evaporation dish and place it on tripod stand above the candle wait for some time the water will change into gas and to get the water they have to cover the evaporating and direct it to a different container to get the water and salt
Which of the following is a stable ion that exists under ordinary conditions?
N3-
Al+
Li2+
F2-
Answers
Answer:
Hmm 65
Explanation:
Calculate the atomic mass of an element if 60.4% of the atoms have a mass of 68.9257 amu and the rest have a mass of 70.9249 amu. Identify the element in the periodic table.
Answers
Answer
Explanation
Atomic mass = abundances1 x relative mass 1+ abundances 2 x relative mass 2 ...etc
= ( 60.4% x 68.9257 + 39.6% x 70.9249)
= 0.604 x 68.9257 + 0.396 x 70.9249)
= 69.72 amu
The element with 2 isotopes, one representing 60.4 % of the atoms (68.9257 amu) and the other representing the rest (70.9249 amu), has an atomic mass of 69.7 amu. The element is Gallium.
An element has 2 isotopes. The sum of their abundances is 100%. If the abundance of isotope 1 is 60.4%, the abundance of isotope 2 is:
\(ab_1 + ab_2 = 100 \% \\ab_2 = 100\% - ab_1 = 100 \% - 60.4 \% = 39.6 \%\)
Isotope 1 has an abundance of 60.4% and a mass of 68.9257 amu, while Isotope 2 has an abundance of 39.6% and a mass of 70.9249 amu. The atomic mass is the weighted average of the mass by the abundance.
\(am = \frac{68.9257 amu \times 60.4 + 70.9249 amu \times 39.6 }{100} = 69.7 amu\)
The element with this atomic mass is Gallium.
The element with 2 isotopes, one representing 60.4 % of the atoms (68.9257 amu) and the other representing the rest (70.9249 amu), has an atomic mass of 69.7 amu. The element is Gallium.
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PLLLZZZZZZZZZZZZZZZ HELPPPPPP MEEEEEEEEEEEE THHHXXX
Answers
A pure yellow crystalline substane, when heated in a vacuum, releases a greenish gas and a red powder. Is the original yellow crystalline substance a compound or element?
Answers
Answer:The yellow crystalline substance is a compound. The green gas and red powder are elements.
Explanation
Elements and compounds are considered pure substances. Elements are made up of a single type of atom while compounds are composed of two or more elements. One example of a compound is the table salt (NaCl) which is made up of one atom of sodium and one atom of chlorine. The elements in the compound are combined chemically and there is a definite ratio of these elements. They are formed by a chemical reaction where chemical bonds are formed. Furthermore, the components of the compound can be separated through several means such as extraction, distillation, etc. The process of heating the yellow crystalline substance resulted in the separation of its components namely, the green gas and red powder.
How is raw steel made and how is it different from raw iron?
Answers
In which container are the particles of water moving fastest? In which container are the particles moving slowest
Answers
Answer:
Particles move faster the farther they are apart, so the container with the most spread out particles.
if you mix 67.9 ml of 1.000 m naoh with 67.9 ml of 1.000 m hcl, what is the concentration of nacl(aq) in the resulting solution? report your answer to one decimal place and do not include units in the final answer.
Answers
Rounding this answer to one decimal place gives a final answer of 0.5 M. Therefore, the concentration of NaCl(aq) in the resulting solution is 0.5.
When you mix 67.9 mL of 1.000 M NaOH with 67.9 mL of 1.000 M HCl, a neutralization reaction occurs between the two. The balanced equation for the reaction is:
NaOH + HCl → NaCl + \(H_{2} O\)
From the equation, you can see that 1 mole of NaOH reacts with 1 mole of HCl to produce 1 mole of NaCl. Therefore, the number of moles of NaCl produced in the reaction is equal to the number of moles of HCl used.
The number of moles of HCl used can be calculated from the initial concentration and volume of the acid:
moles HCl = concentration x volume
= 1.000 M x 0.0679 L
= 0.0679 moles
Since 1 mole of HCl produces 1 mole of NaCl, the number of moles of NaCl produced in the reaction is also 0.0679 moles.
The total volume of the resulting solution is
67.9 mL + 67.9 mL
= 135.8 mL = 0.1358 L.
Therefore, the concentration of NaCl in the resulting solution is:
concentration = moles of NaCl / volume of solution
= 0.0679 moles / 0.1358 L
= 0.4996 M
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referring to the data in part ii what is different about the spectrum of light from an incandescent lamp when viewed through a solution of cuso4?
Answers
Based on the data in Part II, the spectrum of light from an incandescent lamp viewed through a solution of CuSO4 is different in that it shows absorption lines.
These absorption lines occur because the CuSO4 molecules in the solution absorb certain wavelengths of light, which results in a reduced intensity of light passing through the solution. The specific wavelengths of light that are absorbed depend on the electronic structure of the CuSO4 molecule. This absorption spectrum provides information about the electronic transitions that occur within the CuSO4 molecule. Therefore, the presence of absorption lines in the spectrum of light viewed through CuSO4 indicates the presence of the molecule in the solution. The incandescent lamp emits a continuous spectrum, whereas the CuSO4 solution absorbs specific wavelengths, causing the transmitted light to appear altered. In particular, CuSO4 absorbs light in the red and green regions, which results in a blue coloration of the transmitted light. This absorption is due to the presence of copper ions (Cu2+) in the CuSO4 solution, which interact with the incoming light and selectively absorb specific wavelengths. Thus, the observed light spectrum will display distinct changes when passing through a CuSO4 solution compared to the original incandescent lamp spectrum.
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An unknown element has two isotopes, one with a mass of 14.00 amu and 98.632% abundance and one with a mass of 15.00 amu and 1.3668% abundance. Calculate its average atomic mass and identify the element.
Answers
The average atomic mass of the element = 14.0135 amu and the element is Nitrogen
Evaluating :
14.00 × 98.632 % + 15.00 × 1.3668 %
= 1,401.35 %
average atomic mass = \(\frac{1401.35}{100}\)
= 14.0135 amu
Isotopes :
Isotopes are part of a family of an element that have all the same number of protons but different numbers of neutrons. The number of protons in a nucleus defines the element's atomic number on the Periodic Table. Taking example, carbon is having six protons and it's atomic number 6.
Atomic mass :The average atomic mass (generally known as atomic weight) of an element is the weighted average mass of the atoms in a naturally participating sample of the element. Average masses are generally determined in unified atomic mass units (u), where 1 u is equal to one-twelfth of the mass of a neutral atom of carbon-12.
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The Sun’s Influence on Atmosphere and Oceans
Note-taking Guide
Directions: Complete the note-taking guide using the words in the word bank below. To enter your answers, click on the blanks and type.
weather hurricanes poles convection currents warming salt
global conveyor belt surface currents dense equator
Loop Current salinity climate heat cooling wind
The Sun is the main energy source on Earth. Approximately
50%
of the
solar energy hitting Earth is absorbed by land and oceans.
This absorbed energy changes into
which can be transferred to
the atmosphere. As the air in the atmosphere then gets heated, it becomes
less
and rises.
Cool, dense air from other places flows in to replace this warm air, which we
feel as
.
This cool air eventually heats and starts to rise again. This continual process
of air closest to Earth’s surface warming, rising, cooling, and then sinking
creates
in the atmosphere.
Atmospheric winds that blow over the ocean surface create
that carry water around the globe.
Unequal heating of the oceans and differences in
also
create currents.
The Sun warms water at the
more than it does at the
high latitude Polar regions.
At the
, some water freezes. The water that doesn’t freeze
contains more
, making it denser.
As this cold, dense water sinks, the warm water from the equator moves
toward the poles to replace it.
This constant movement creates a deep ocean current called the
.
The global conveyor belt transfers heat from one part of the world to the
other, thus affecting the
and
in all parts
of the world.
Surface and deep ocean currents continually transfer warm and cold waters
around the globe.
As these waters warm or cool the air above it, winds blow the air over land,
it up or
it down.
The
in the Gulf of Mexico is an ocean current
that creates a warm layer of water in the gulf. This results in the growth of
several
that affect the Gulf Coast.
Answers
Answer:
bestie this is like 6th grade stuff
Explanation:
What makes the Bactria move
Answers
Answer:
b
Explanation:
Two students investigated the electrolysis of copper sulfate solution. When copper sulfate solution is electrolysed, copper is produced at the negative electrode What substance is produced at the positive electrode when copper sulfate solution is electrolysed
Answers
Oxygen gas is produced at the positive electrode of the solution.
What is produced?We know that the term electrolysis has to do with the process by which we can be able to cause the splitting of a compound that is ionic when we pass a direct current through the solution of the compound.
Now we know that at the negative electrode, we are going to have the copper metal that is discharged but at the positive electrode, we are going to have the discharge of oxygen gas. This is because it is higher in the series than sulfate ions.
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The drug concentration in the bloodstream thours after injection is given approximately by C(t)=3.75e^−1,0≤t≤5, where C(t) is the concentration in milligrams per milliliter. (A) What is the rate of change of concentration after 3 hours? After 5 hours? (B) Graph C. (A) Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round until the final answer. Then round to the nearest hundredth as needed.) A. After 3 hours, the concentration is increasing at the rate of mg/mL per hour: B. After 3 hours, the concentration is decreasing at the rate of mg/mL per hour. C. After 3 hours, the rate is nelther increasing nor decreasing.
Answers
Given:
C(t) = 3.75e^(-t), 0 ≤ t ≤ 5
To determine the rate of change of concentration after 3 hours, we need to find the first derivative of C(t) with respect to t using the following formula:
dy/dx of e^x = e^x(dy/dx)
Therefore,
dC(t)/dt = d/dt (3.75e^(-t)) = 3.75 d/dt(e^(-t)) = -3.75e^(-t)
The rate of change of concentration after 3 hours is given by dC(t)/dt = -3.75e^(-t) at t = 3.
C(3) = 3.75e^(-3) ≈ 1.44
Hence, the rate of change of concentration after 3 hours is 1.06 mg/mL per hour (rounded to two decimal places).
To find the rate of change of concentration after 5 hours, we need to find the first derivative of C(t) with respect to t using the following formula:
dy/dx of e^x = e^x(dy/dx)
Therefore, dC(t)/dt = d/dt (3.75e^(-t)) = 3.75 d/dt(e^(-t)) = -3.75e^(-t)
The rate of change of concentration after 5 hours is given by dC(t)/dt = -3.75e^(-t) at t = 5.C(5) = 3.75e^(-5) ≈ 0.27
Hence, the rate of change of concentration after 5 hours is 0.26 mg/mL per hour (rounded to two decimal places).
Thus, the option is A.
After 3 hours, the concentration is increasing at the rate of 1.06 mg/mL per hour.
After 5 hours, the concentration is increasing at the rate of 0.26 mg/mL per hour (rounded to two decimal places).
The graph of C is given below:
Image 1 is the graph of C.
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What is the pOH of water?
Answers
Answer:
A. 7
(assuming the water is neutral)
What does it mean if EROEI = 1? a. None of the above b. It's early days of fossil fuel exploration c. It's a perfect return on investment d. The efficiency is 100%
Answers
When EROEI (Energy Return on Energy Investment) is equal to 1, it means that the energy gained from a particular source is equivalent to the energy invested in obtaining that energy. In other words, the energy return is equal to the energy input. This indicates a situation where the energy extraction process is barely breaking even, with no net gain or loss in energy.
EROEI is a metric used to assess the efficiency and viability of energy sources. It measures the amount of usable energy obtained from a particular energy source divided by the amount of energy invested to extract or produce that energy. A value of 1 means that the energy gained is just enough to offset the energy invested.
In practical terms, an EROEI of 1 implies that the energy source being evaluated is not very efficient. It suggests that the amount of energy required to extract, process, or produce the energy is nearly equal to the energy obtained. Therefore, there is little to no surplus energy available for other uses or to sustain the energy extraction process itself.
An EROEI of 1 is often associated with energy sources in their early stages of development or exploration, where the technology or extraction methods may not be fully optimized. It could also indicate energy sources with high production costs or low energy density.
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Is the rate of decay fastest at the beginning, middle, or end of the process?
Answers
Answer:
The beginning
Explanation:
In a nuclear reaction, the rate of decay is fastest at the beginning of the process.
What are nuclear reactions?There are two types of nuclear reactions which are nuclear fusion and nuclear fission .They involve the combination and disintegration of the element's nucleus respectively.
In nuclear fission, the nucleus of the atom is bombarded with electrons of low energy which splits the nucleus in to two parts .Large amount of energy is released in the process.It is used in nuclear power reactors as it produces large amount of energy.
In nuclear fusion,on the other hand, is a reaction which occurs when two or more atoms combine to form a heavy nucleus.Large amount of energy is released in the process which is greater than that of the energy which is released in nuclear fission process.
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it is used to lift water from a well
Answers
Answer:
When air is admitted into the well, the water recedes from the level of static head to the bottom of the discharge pipe. The displaced column of liquid rises up the discharge pipe. Air bubbles mix with water and this reduces the specific gravity of the column of water sufficiently to lift it to the surface.
Explanation:
10 To draw a perfect circle, you'll need: A A protractor B. A sextant С A compass D A spirograph 10 of 10
Answers
Answer:
B
Explanation:
Two quick google searches later I grace you with the google has bestowed upon me
Given the balanced equation of H2SO + O2 + H2SO3, how many liters of O2 are needed to
produce 463g H2SO3 at standard temperature and pressure?
Answers
126.34 liters of O₂ are needed to produce 463g of H₂SO₃ at standard temperature and pressure, given the balanced equation: H₂SO₄ + O₂ + H₂O → 2H₂SO₃.
The balanced equation is as follows:
H₂SO₄ + O₂ + H₂O → 2H₂SO₃
We can use stoichiometry to calculate the volume of O₂ needed to produce 463g of H₂SO₃ at standard temperature and pressure. The molar mass of H₂SO₃ is 82.07 g/mol. Therefore, there are 463/82.07 = 5.64 moles of H₂SO₃ produced.
Since the stoichiometric ratio between O₂ and H₂SO₃ is 1:1, we need 5.64 moles of O₂ to produce 5.64 moles of H₂SO₃.
The volume of a gas at standard temperature and pressure is 22.4 L per mole. Therefore, the volume of O₂ needed is:
5.64 mol x 22.4 L/mol = 126.34 L
So, 126.34 liters of O₂ are needed to produce 463g of H₂SO₃ at standard temperature and pressure, given the balanced equation: H₂SO₄ + O₂ + H₂O → 2H₂SO₃.
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Inversion is a type of mutation that
Select one:
a change in every amino acid that follows the point of mutation
involves the loss of all or part of a chromosome
reverses the direction of parts of a chromosome.
O
O
a change in one or few nucleotides that occur at a single point in the DNA sequence
Answers
Answer:
bsbsbsbsbsbsbsbabababab
Explanation:
PLEASE HELP!!
George is writing an essay about the role of observation and inference in the development of the atomic theory. He wants to explain why it was more difficult to observe the presence of neutrons in atoms. Which statements should he include in his essay? Choose the two statements that apply.
A. While protons or electrons can be influenced by other charged particles, neutrons are not.
B. It was difficult to observe that neutrons were different than protons because the two particles respond to charge in the same way.
C. It was difficult to observe that neutrons were different than electrons because the two particles respond to charge in the same way.
D. Neutrons are held tightly together with protons in the nucleus, so scientists could not observe the behavior of neutrons independently.
Answers
Answer:
D and A
Explanation:
While protons or electrons can be influenced by other charged particles, neutrons are not.
and
Neutrons are held tightly together with protons in the nucleus, so scientists could not observe the behavior of neutrons independently.