Ozone depletion is the gradual thinning of Earth's ozone layer, which protects us and it is located in the upper atmosphere. The depletion of this atmospheric layer is mostly caused by human activity, by producing manufactured chemicals, one in specific is CFCs, or Chlorofluorocarbons. Letter B
the one at the bottom^
Answer:
change in gravitational potential energy is 50J
What mass of NaCl is needed to produce a 26.4 mol/L with a 1.7 L volume?
we would need 2625.13 grams (or 2.62513 kilograms) of NaCl.
To calculate the mass of NaCl required to produce a 26.4 mol/L solution with a 1.7 L volume, we need to use the formula that relates the mass of solute, moles of solute, and molarity:Molarity (M) = moles of solute / liters of solution Rearranging this formula, we get:moles of solute = Molarity (M) x liters of solutionWe can use this formula to find the moles of NaCl needed:moles of NaCl = 26.4 mol/L x 1.7 L = 44.88 molNow, we can use the molar mass of NaCl to convert from moles to grams. The molar mass of NaCl is 58.44 g/mol:mass of NaCl = moles of NaCl x molar mass of NaClmass of NaCl = 44.88 mol x 58.44 g/mol = 2625.13 gTo produce a 26.4 mol/L solution with a 1.7 L volume.
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5.22 2.61(g - 7)
g
=.
HELP PLS
Answer:
g = 9
Explanation:
5.22 = 2.61(g - 7) ==> solve for g
5.22 / 2.61 = 2.61(g - 7) / 2.61 ==> divide both sides by 2.61 to isolate g
2 = g - 7 ==> simplify
9 = g ==> add 7 on both sides
g = 9
Which of the following elements has five electrons in each neutral atom?
The element which has five electrons in each neutral atom is boron
Boron number 5 has five protons and therefore as a neutral atom also has five electron
What is an element?An element is a substance which cannot be split into simpler forms by an ordinary chemical process . This simply goes to say that elements are substances which that cannot be decomposed into simpler substances by ordinary chemical reactions.
An atom is the smallest unit or part of an element which can take part in a chemical reaction.
On a general note, elements are classified as thus:Metals, non-metal, and metalloid.The extreme left side elements in the periodic table are metals, for example, aluminum, sodium, calcium, caesium, etc.However, elements on the right side are generally referred to as non-metals, carbon, chlorine, oxygen,
So therefore, the element which has five electrons in each neutral atom is boron
Complete question:
If there are 5 electrons in the neutral atom, what is its Identity?
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4. One molecule of propanol contains a total of
flonsoona
(1) one -OH group
(2) two -CH3 groups
(3) three -OH groups
(4) three -CH3 groups
One molecule of propanol contains only one -OH group and not three -OH groups or three -CH3 groups.
The -OH group is attached to the central carbon atom and makes propanol a useful solvent and intermediate in organic chemistry.Propanol is a colorless liquid that belongs to the family of alcohols. It has the formula C3H8O, and it contains three carbon atoms, eight hydrogen atoms, and one hydroxyl group (-OH) attached to one of the carbons. One molecule of propanol contains only one -OH group, which is attached to the central carbon atom.
Thus, option (2) is the correct answer, and the other options are incorrect.The -OH group in propanol is responsible for its unique chemical and physical properties. It makes propanol soluble in water and other polar solvents and gives it a high boiling point of around 97°C. The hydroxyl group can also participate in chemical reactions, such as esterification, dehydration, oxidation, and reduction. For example, propanol can be oxidized to form propanal and then propanoic acid, which is a useful synthetic intermediate for many organic compounds.Apart from the -OH group, propanol also contains two other functional groups called methyl groups (-CH3). These are attached to the two carbon atoms adjacent to the central carbon. However, the question only asks about the number of -OH groups in propanol, so the methyl groups are irrelevant.
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4- The standard potential of cell: Sn/Sn²+||Cr³+/Cr is −0.60V.what is the standard
reduction potential of the Cr³+/Crelectrode? Es = -0.14V
Sn²+
(b) +0.74V
(c) -0.88V
(d) -0.74V
(a) +0.88V
The standard reduction potential of the Cr³+/Cr electrode is -0.46V. None of the option is correct.
To determine the standard reduction potential of the Cr³+/Cr electrode, we can use the Nernst equation, which relates the standard reduction potential to the cell potential under non-standard conditions. The Nernst equation is given by:
E = E° - (0.0592/n) * log(Q)
where E is the cell potential, E° is the standard reduction potential, n is the number of electrons transferred in the half-reaction, and Q is the reaction quotient.
In this case, we have the standard potential of the cell as −0.60V. We know that the standard reduction potential of the Sn/Sn²+ electrode is -0.14V. Therefore, the reduction potential of the Cr³+/Cr electrode can be calculated as:
E = -0.60V - (-0.14V)
E = -0.60V + 0.14V
E = -0.46V
Therefore, the standard reduction potential of the Cr³+/Cr electrode is -0.46V.
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A new garage door opener app is introduced to the market, claming it can close your garage door from a farther distance than a traditional door opener. 10 volunteers are given access to the app, and their neighbors are using the traditional opener. The number of times the garage door opens is detremined from varying distance. What is the control group, Independent variable, and the dependent variable?
Answer:
I would answer but not enough information
The experimental setup includes the variables that determine the result. The neighbor with a traditional garage door opener is the control, volunteers are independent, and the number of door openings is the dependent variable.
What are dependent and independent variables?Dependent variables are said to be the data that are affected and altered by the other variable of the experimental design. In the experiment of the door opener app, the number of times the door opens is the dependent variable as it depends on the distance.
Independent variables are said to be the data that influence the dependent variable and are the cause in an experimental group are the test variables. The volunteers that have access to the door open app are the independent variables.
On the other hand, the control is the group that lacks the independent variable and is deemed to be constant as they must alter the other factor leading to changes in the result. The number of times the garage door opens is constant.
Therefore, the independent and dependent variables are the test variables.
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-Convert 6.02 x 1020 formula units of MgCl₂ to mol of MgCl₂:
6.02 x \(10^{20\) formula units of MgCl₂ is equal to 0.1 moles of MgCl₂.
To convert formula units of MgCl₂ to moles of MgCl₂, we need to use Avogadro's number, which relates the number of formula units to the number of moles.
Avogadro's number (NA) is approximately 6.022 x 10^23 formula units per mole.
Given that we have 6.02 x 10^20 formula units of MgCl₂, we can set up a conversion factor to convert to moles:
(6.02 x 10^20 formula units MgCl₂) * (1 mol MgCl₂ / (6.022 x 10^23 formula units MgCl₂))
The formula units of MgCl₂ cancel out, and we are left with moles of MgCl₂:
(6.02 x 10^20) * (1 mol / 6.022 x 10^23) = 0.1 mol
Therefore, 6.02 x 10^20 formula units of MgCl₂ is equal to 0.1 moles of MgCl₂.
It's important to note that this conversion assumes that each formula unit of MgCl₂ represents one mole of MgCl₂. This is based on the stoichiometry of the compound, where there is one mole of MgCl₂ for every one formula unit.
Additionally, this conversion is valid for any substance, not just MgCl₂, as long as you know the value of Avogadro's number and the number of formula units or particles you have.
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Constructing a Device to Regulate the Release of Energy - Student Guide
Constructing a Device to Regulate the Release of Energy - Rubric
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Answer:
I am not able to click anything above!
What is the final temperature after 840 Joules is absorbed by 10.0g of water at 25.0
C?
The final temperature of the water is: T_final = 45.0°C
We can use the formula for the specific heat capacity of the water to solve this problem:
q = mcΔT
First, we can calculate the initial energy of the water:
q = mcΔT
q = (10.0 g) (4.184 J/g°C) (25.0°C)
q = 1,046 J
Next, we can calculate the final temperature after absorbing 840 J:
q = mcΔT
840 J = (10.0 g) (4.184 J/g°C) (ΔT)
ΔT = 20.0°C
Therefore, the final temperature of the water is:
T_final = T_initial + ΔT
T_final = 25.0°C + 20.0°C
T_final = 45.0°C
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2. Which chemical below is easier to dissolve in water
a) KBr b) CO2 c)CH4
d) O2
The correct answer is a) KBr.
KBr is an ionic compound composed of a metal (K) and a non-metal (Br). When this compound is added to water, the polar water molecules surround the ions in the solid and separate them, which leads to the compound dissolving in water.
What is Ionic Compound?
An ionic compound is a chemical compound composed of ions held together by electrostatic forces called ionic bonds. Ions are atoms or molecules that have gained or lost one or more electrons, giving them a positive or negative charge. In an ionic compound, a positively charged ion (cation) and a negatively charged ion (anion) are attracted to each other to form a stable compound.
CO2, CH4, and O2 are nonpolar molecules, and therefore, do not dissolve well in water. CO2 and O2 are gases at room temperature and pressure, while CH4 is a gas at room temperature but can be liquefied under pressure.
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2. What is the percent composition of Mg(IO3)2?
Answer:
Mass percentage 6.4967
Explanation:
I had some study notes
How many protons does Hydrogen contain?
Answer:
1
Explanation:
What is the relationship between heat, temperature, thermal
energy within a system?
Answer:
The thermal energy, orheat, of an object is obtained by adding up the kinetic energy of all the molecules within it.Temperature is the average kineticenergy of the molecules.
Put the following energy sublevels in order from least to greatest energy.
A. 1s, 2s, 3s, 4s, 2p, 3p, 4p, 3d, 4d, 4f
B. 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 4d, 4f
C. 1s, 2s, 2p, 3s, 3p, 3d, 4s, 4p, 4d, 4f
D. None of these
The correct order is 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 4d, 4f. The correct option is B.
Order of energy sublevelsThe correct order of energy sublevel is 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p.
Thus, with the exclusion of 5s, 5p, 6s, 5d, 6p, 7s, 5f, 6d, and 7p, what we have left in order of increasing energy is 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 4d, 4f.
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The correct order from least to greatest energy for the energy sublevels is; 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 4d, 4f (Option B).
What is the Aufbau principle?The Aufbau principle offers a method in which the energy levels in an atoms are arranged from the least to the greatest. We know that electrons are filled into orbitals in order of increasing energy.
Thus, the correct order from least to greatest energy for the energy sublevels is; 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 4d, 4f (Option B).
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3 Ca + 2 P→ Ca3P₂
Identify the limiting reactant (LR), excess reactant (ER), and theoretical yield (TY), in moles, of Ca³P₂
when 17.0 grams Ca reacts with 18.0 grams P.
To identify the limiting reactant, excess reactant, and theoretical yield, we first need to determine the amount of each reactant in moles.
Using the molar masses of Ca and P:
Number of moles of Ca = 17.0 g / 40.08 g/mol = 0.424 mol
Number of moles of P = 18.0 g / 30.97 g/mol = 0.581 mol
Next, we need to determine the stoichiometric ratio of the reactants. From the balanced chemical equation, we see that the ratio of Ca to P is 3:2.
3 Ca + 2 P → Ca3P2
To use the stoichiometric ratio to determine the limiting reactant, we need to compare the actual ratio of the reactants to the stoichiometric ratio.
Actual ratio of Ca to P = (0.424 mol Ca) / (0.581 mol P) ≈ 0.73
Stoichiometric ratio of Ca to P = 3/2 = 1.5
Since the actual ratio is greater than the stoichiometric ratio, Ca is the excess reactant and P is the limiting reactant.
To find the theoretical yield of Ca3P2, we need to use the stoichiometric ratio to determine how many moles of Ca3P2 can be produced from the limiting reactant (P).
From the balanced chemical equation, we see that 2 moles of P react with 3 moles of Ca to produce 1 mole of Ca3P2.
So, the number of moles of Ca3P2 that can be produced from 0.581 mol of P is:
(0.581 mol P) × (1 mol Ca3P2 / 2 mol P) = 0.2905 mol Ca3P2
Therefore, the theoretical yield of Ca3P2 is 0.2905 mol.
A piece of metal with a mass of 24.2 g was dropped into a graduated cylinder containing 15.50 mL of water. The graduated cylinder after the addition of the metal is shown. Determine the density of the metal.
Explanation
Given
Mass of metal = 24.2 g
Initial volume = 15.50 mL
Final volume = 18.4 mL
Volume occupied by metal = 18.4 mL - 15.50 mL = 2.9 mL
Solution
density = mass/volume
density = 24.2g/2.9 mL
density = 8.34 g/mL
Answer
Density of metal = 8.34 g.mL
help Tell me the answer.
Answer:
it's easy u just have to put them in a calculator the way they are it will give you your answer atleast I think so hope this helps
PROJECT: HYDROELECTRIC POWER
Assignment Directions:
Compose an essay on hydroelectric power of at least 400 words.
Assignment Guidelines:
In your report, be sure to address:
How a hydroelectric power plant works, including why dams are built as parts of large hydropower plants;
The environmental and economic benefits of hydroelectricity, giving examples from the case studies; and
The environmental and cultural disadvantages of hydropower, giving examples from the case studies.
Hydroelectric Power: Harnessing Nature’s Energy
Let's imagine a huge wall blocking a river. On one side, the water level is high, and on the other, it's low. Now imagine that this wall has a mechanism to let the water flow from the high side to the low side, and in the process, it produces electricity. This is, in simple terms, how a hydroelectric power plant works!
Hydroelectric power plants work by using water to turn turbines that generate electricity. They are often built with dams, which are like giant walls across rivers. The dams are essential because they raise the water level on one side, creating a reservoir or a lake. This reservoir stores a huge amount of potential energy. When the water is released, it flows down through turbines, and this energy is converted into mechanical energy. The turbines are connected to generators, which turn the mechanical energy into electricity.
Now, let's talk about some of the environmental and economic benefits of hydroelectricity. It's like hitting two birds with one stone! Firstly, hydroelectric power doesn’t produce greenhouse gases or pollutants during operation, which means it’s much cleaner for our air compared to coal or gas power plants. For example, the Itaipu Dam in Brazil and Paraguay is a great case study. It generates so much electricity from hydro power that it reduces CO2 emissions equivalent to what 21.6 million cars would produce in a year!
Another economic benefit is that the electricity produced is usually cheaper in the long run. Hydroelectric plants have high upfront costs but can operate for a very long time. The Hoover Dam in the USA, built in the 1930s, still generates electricity at low cost, providing power to millions of homes.
However, there is no such thing as a free lunch. There are also environmental and cultural disadvantages to hydroelectric power. When a dam is built, the area behind it gets flooded. This means that plants, animals, and even people's homes can be submerged. For instance, the Three Gorges Dam in China displaced over 1.2 million people and flooded archaeological sites. Additionally, dams can impact fish populations. In the United States, salmon populations in the Pacific Northwest have decreased partly because dams block their migration routes.
Dams also affect the natural flow of rivers, which can have far-reaching consequences for ecosystems. The Aswan Dam in Egypt, for example, has reduced the fertility of the Nile Delta because the nutrients that used to flow down the river and enrich the soil are now trapped behind the dam.
In conclusion, hydroelectric power is an incredible way to generate clean energy, but it's important to weigh these benefits against the environmental and cultural costs. Finding ways to mitigate the negative impacts or looking at alternative renewable energy sources can help us move towards a more sustainable future.
*Keep in mind, you should paraphrase this or use it as your frame of reference, otherwise it would be plain plagiarism.*
The power of water has been harnessed by humans for centuries to generate electricity, and hydroelectric power is a renewable and sustainable energy source that has been used for many years. In this essay, we will explore the inner workings of hydroelectric power plants, the advantages and disadvantages of this energy source, and the potential it holds for a sustainable energy future. Hydroelectric power plants use the force of falling water to turn turbines, generating electricity through a process that is clean and efficient. Dams are built as part of large hydropower plants to control the flow of water and store it for later use. When the water is released from the dam, it flows through a penstock and turns the turbine, which generates electricity. Moreover, hydropower plants can be easily adjusted to meet peak demand for electricity, making them a valuable source of reliable and flexible energy.
One of the main advantages of hydroelectricity is its sustainability. Water is a renewable resource that is constantly replenished by the water cycle, making hydropower an almost infinite source of energy. Additionally, hydropower plants can provide a range of ecosystem services, such as flood control, irrigation, and recreation. For example, the Itapúa Dam on the Paraná River in Brazil provides water for irrigation, supports local fishing industries, and generates electricity for millions of homes. Nevertheless, there are also environmental and cultural drawbacks to hydropower. Large dams can cause significant harm to river ecosystems, altering the natural flow of water and affecting the habitats of fish and other aquatic species. Moreover, the construction of dams can displace local communities and destroy cultural heritage sites. For example, the construction of the Three Gorges Dam in China has caused the displacement of over one million people and has destroyed numerous cultural heritage sites.
Despite these challenges, the potential of hydroelectric power for a sustainable energy future cannot be ignored. As we move towards a world that is less reliant on fossil fuels, hydropower can play a critical role in providing clean, renewable, and reliable energy. Furthermore, new technologies are being developed to reduce the environmental impact of hydropower, such as fish ladders and other measures to support fish migration. Furthermore, hydroelectric power is a powerful and sustainable source of energy that harnesses the power of falling water to generate electricity. Although there are challenges associated with hydropower, such as the environmental and cultural impacts of large dams, the benefits of this energy source are significant. As we continue to seek sustainable solutions to our energy needs, hydroelectric power will undoubtedly play a critical role in meeting our energy demands while also protecting the environment and supporting economic growth.
Thank you, I genuinely hope this helps.
According to the following reaction, how many moles of oxygen gas are necessary to form 0.408 moles carbon dioxide?
C3 Hs (g) +502(g) → 3CO2(g) + 4H₂O(g)
mol oxygen gas
Answer:
2 molecules of oxygen are necessary
You are out hiking on a cold snowy day. You put on your battery-heated socks. In which direction is the thermal energy flowing?
There is no thermal energy in this scenario.
Thermal energy is moving from the air to your socks
Thermal energy is moving from your feet to your socks
Thermal energy is moving from your socks to your feet
The correct answer is that thermal energy is moving from your feet to your socks. The battery-heated socks work by using the heat generated by your body to warm your feet in cold weather.
The body produces heat, which is converted into thermal energy, and moves from your feet to the socks.
In order to warm your feet and make them more comfortable in cold weather, the socks use thermal energy. The thermal energy is only transferred in one direction, from your feet to the socks.
No more energy is produced because the battery-heated socks utilise your body's thermal energy to keep your feet warm.
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How many atoms are in 12 g of Carbon-12 (12C)?
There are approximately 6.022 × 10^23 atoms in 12 grams of Carbon-12 (12C).
The number of atoms in a given amount of a substance can be calculated using Avogadro's number, which represents the number of atoms or molecules in one mole of a substance. Avogadro's number is approximately 6.022 × 10^23.
Carbon-12 is a specific isotope of carbon, with an atomic mass of 12 atomic mass units (amu). One mole of Carbon-12 has a mass of 12 grams. Since one mole of any substance contains Avogadro's number of particles, in the case of Carbon-12, it contains 6.022 × 10^23 atoms.
Therefore, if we have 12 grams of Carbon-12, which is equal to one mole, we can conclude that there are approximately 6.022 × 10^23 atoms in this amount of Carbon-12.
In summary, 12 grams of Carbon-12 contains approximately 6.022 × 10^23 atoms. Avogadro's number allows us to relate the mass of a substance to the number of atoms or molecules it contains, providing a fundamental concept in chemistry and enabling us to quantify and understand the microscopic world of atoms and molecules.
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heating curve iron
at what temperature does the substance begins to boil
at what temperature does a substance begin to melt
at what temperature is a substance for a liquid and a gas
at what temperature is the substance both a solid and a liquid
The substance begins to boil at 2750⁰C, the substance begins to melt at 1500⁰C, the temperature at which the substance is both a liquid and a gas at 2750⁰C, temperature is the substance both a solid and a liquid at 1500⁰C.
Heating curves are the graphical correlations between heat added to a substance. When viewed from a cooling perspective, ie. loss of heat, it is the cooling curve.
The gradient of the cooling curve is related to the heat capacity, the thermal conductivity of the substance, and the external temperature. The more heat is required to change the temperature of the substance, the slower it cools, so the smaller the gradient of the curve. The higher the thermal conductivity, the faster heat is transferred, so the faster the substance cools.
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Which of the following characteristics do Element I and Element I have in common?
Answer:
Option C. The same number of energy levels.
Explanation:
From the diagram given above, element (i) belong to group 2 while element (ii) belong to group 6.
Also, both element i and ii belong to the same period (i.e period 4). This simply means that both element i and ii have the same number of energy levels.
NOTE: Elements in the same period have the same number of shells of electrons which simply means they have the same energy levels.
2. De acuerdo con la tabla periódica, ¿cuál de las siguientes combinaciones de elementos tiene caracteristicas semejantes? (1) sodio (Na), cloro (CI), hidrógeno (H) (2) neon (Ne), argón (Ar), criptón (Kr) (3) litio (Li), magnesio (Mg), azufre (S) (4) berilio (Be), carbono (C), fluor (F) (5) aluminio (AI), azufre (S), cloro (CI) C nourdin con el texto en la relación de qué
it is a because I took the test
Write 5,600 in scientific notation
Answer:
\(5.6\cdot10^{3}\) = \(5600\)
Explanation:
\(--------------------------------------------\)
\(5.6\cdot10^{0}\) = \(5.6\)
\(5.6\cdot10^{1}\) = \(56\)
\(5.6\cdot10^{2}\) = \(560\)
\(5.6\cdot10^{3}\) = \(5600\) = \(Answer\)
\(--------------------------------------------\)
Hope this helps! <3
\(--------------------------------------------\)
The chemist used 480g
2Fe2O3 + 3C → 4Fe + 3CO2
How many g Fe were formed?
How many g carbon needed to be taken?
How many dm3 of carbon dioxide was released during this process?
How many grams released CO2?
The chemist received 252g of Fe. Calculate the percent yield of the reaction?
The theoretical yield of Fe is 335.1 g.
54.0 g of C is needed.
The volume of CO2 produced is 0.992 L.
198.05 g of CO2 was produced.
The percent yield of the reaction is 75.2%.
The balanced chemical equation for the reaction is:
2Fe2O3 + 3C → 4Fe + 3CO2
Using the equation, we can calculate the theoretical yield of Fe and the amount of C needed.
To calculate the theoretical yield of Fe:
Convert the given mass of Fe2O3 to moles:
480 g Fe2O3 x (1 mol Fe2O3/ 160 g Fe2O3) = 3.0 mol Fe2O3
Use stoichiometry to find the moles of Fe produced:
2 mol Fe2O3 → 4 mol Fe
3.0 mol Fe2O3 x (4 mol Fe / 2 mol Fe2O3) = 6.0 mol Fe
Convert moles of Fe to grams:
6.0 mol Fe x (55.85 g Fe / 1 mol Fe) = 335.1 g Fe
To calculate the amount of C needed:
Use stoichiometry to find the moles of C needed:
2 mol Fe2O3 → 3 mol C
3.0 mol Fe2O3 x (3 mol C / 2 mol Fe2O3) = 4.5 mol C
Convert moles of C to grams:
4.5 mol C x (12.01 g C / 1 mol C) = 54.0 g C
To find the volume of CO2 produced, we need to calculate the number of moles of CO2 produced using stoichiometry.
Use stoichiometry to find the moles of CO2 produced:
2 mol Fe2O3 → 3 mol CO2
3.0 mol Fe2O3 x (3 mol CO2 / 2 mol Fe2O3) = 4.5 mol CO2
Convert moles of CO2 to volume using the ideal gas law:
PV = nRT
V = nRT/P
V = (4.5 mol) (0.0821 L atm mol^-1 K^-1) (298 K) / (1 atm)
V = 0.992 L
To find the mass of CO2 produced:
Use the molar mass of CO2 to convert from moles to grams:
4.5 mol CO2 x (44.01 g CO2 / 1 mol CO2) = 198.05 g CO2
To calculate the percent yield of the reaction:
Use the given mass of Fe (252 g) and the theoretical yield of Fe (335.1 g) to calculate the percent yield:
Percent yield = (actual yield / theoretical yield) x 100%
Percent yield = (252 g / 335.1 g) x 100%
Percent yield = 75.2%
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pls help
2.0 mol of Ca(OH)2 are mixed with 2.0 mol of HCl according to the following equation:
Ca(OH)2+2HCl=CaCl2+2H2O
a. Which chemical is in excess and which is limiting reactant?
b. What is the excess in grams?
c.Theoretically,how many moles of H20 will be produced?
Answer:
Explanation:
Limiting is HCl and excess is Ca(OH)2
excess is 296 grams Ca(OH)2
2 moles H2O will be formed
Based on the balanced equation, if 60.1 grams of Nitrogen (N2) are used, how many grams of ammonia (NH3) is made?
3 H2 + 1 N2 ----> 2 NH3
Answer:
mass NH₃ produced = 72.9g (3 sig. figs.)
Explanation:
3H₂ + N₂ => 2NH₃
given excess 60.1g (?)grams
moles => (60.1g/28g/mol)
= 2.15mole => 2(2.15mole)
= 4.29mole NH₃
mass NH₃ = 4.29moles x 17 g/mole = 72.9grams NH₃
Always convert given data into moles, solve in terms of moles and convert to needed dimension from mole yields. :-)
Answer:
73.07 grams of ammonia is produced.
Explanation:
In order to find the grams of ammonia produced, we need to find the amount of the reactants so that we know how much product (ammonia) the reactants (Hydrogen and Nitrogen) can and will produce.
First, we need to use the balanced equation to find the amount of moles equivalent to the 60.1 grams of Nitrogen that reacts.
To convert from Grams to Moles, we will divide by the molar mass (amu)..
60.1 grams of N2 / 2(14.01) grams N2 = 2.144896502 moles of N2.
So, we know that 60.1 grams of N2 equals 2.144896502 moles.
Now, we will look at the balanced equation and convert from moles of N2 to moles of NH3 in order to later find the grams of NH3 (ammonia) produced..
2.144896502 moles N2 * 2 moles NH3/1 mol N2 = 4.289793004 moles NH3.
Now that we know the amount of moles produced of ammonia, we will convert to grams. We can do this by multiplying by the molar mass of ammonia which is 17.034 (N = 14.01, H = 1.008, ---> 14.01 +3(1.008) = 17.034)
4.289793004 moles NH3 * 17.034/1 mol = 73.07233403 grams NH3
This can be estimated to 73.07 grams of NH3 (ammonia) produced.
If you are still confused on how to convert between moles and grams, please see the uploaded image.
Starting with 0.3500 mol CO(g) and 0.05500 mol COCl2(g) in a 3.050 L flask at 668 K, how many moles of CI2(g) will be present at equilibrium?
CO(g) + Cl2(g)》COCl2(g)
Kc= 1.2 x 10^3 at 668 K
At equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.
1: Write the balanced chemical equation:
\(C_O\)(g) + \(Cl_2\)(g) ⟶ \(C_OCl_2\)(g)
2: Set up an ICE table to track the changes in moles of the substances involved in the reaction.
Initial:
\(C_O\)(g) = 0.3500 mol
\(Cl_2\)(g) = 0.05500 mol
\(C_OCl_2\)(g) = 0 mol
Change:
\(C_O\)(g) = -x
\(Cl_2\)(g) = -x
\(C_OCl_2\)(g) = +x
Equilibrium:
\(C_O\)(g) = 0.3500 - x mol
\(Cl_2\)(g) = 0.05500 - x mol
\(C_OCl_2\)(g) = x mol
3: Write the expression for the equilibrium constant (Kc) using the concentrations of the species involved:
Kc = [\(C_OCl_2\)(g)] / [\(C_O\)(g)] * [\(Cl_2\)(g)]
4: Substitute the given equilibrium constant (Kc) value into the expression:
1.2 x \(10^3\) = x / (0.3500 - x) * (0.05500 - x)
5: Solve the equation for x. Rearrange the equation to obtain a quadratic equation:
1.2 x \(10^3\) * (0.3500 - x) * (0.05500 - x) = x
6: Simplify and solve the quadratic equation. This can be done by multiplying out the terms, rearranging the equation to standard quadratic form, and then using the quadratic formula.
7: After solving the quadratic equation, you will find two possible values for x. However, since the number of moles cannot be negative, we discard the negative solution.
8: The positive value of x represents the number of moles of \(Cl_2\)(g) at equilibrium. Substitute the value of x into the expression for \(Cl_2\)(g):
\(Cl_2\)(g) = 0.05500 - x
9: Calculate the value of \(Cl_2\)(g) at equilibrium:
\(Cl_2\)(g) = 0.05500 - x
\(Cl_2\)(g) = 0.05500 - (positive value of x)
10: Calculate the final value of \(Cl_2\) (g) at equilibrium to get the answer.
Therefore, at equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.
For more such questions on equilibrium, click on:
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