for the following reaction, if o2 is used up at a rate of 1.45mhr, what is the rate of formation of h2o? 4nh3 5o2→4no 6h2o
Answers
The rate of formation of H₂O is 1.74 mol/hr. This indicates that for every hour, 1.74 moles of H₂O are being formed during the reaction.
To determine the rate of formation of H₂O, we need to consider the stoichiometry of the reaction. According to the balanced equation, for every 5 moles of O₂ consumed, 6 moles of H₂O are formed. This means that the ratio of the rate of consumption of O₂ to the rate of formation of H₂O is 5:6.
Given that O₂ is being consumed at a rate of 1.45 mol/hr, we can set up a proportion to find the rate of formation of H₂O:
(1.45 mol O₂/1 hr) * (6 mol H₂O/5 mol O₂) = 1.74 mol H₂O/hr
It's important to note that this calculation assumes that the reaction is taking place under the given conditions and that the stoichiometry of the reaction is accurate.
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Related Questions
which electron configuration represents excited excited state for a potassium Atom
Answers
most neutral atoms of argon have an atomic mass of 40 amu and an atomic number of 18. what are these atoms composed of?
A.18 protons,22 neutrons, and 22 electrons
B.18 protons 22 neutrons 18 electrons
C.18 protons 18 neutrons 18 electrons
D,18 protons 40 neutrons and 18 electrons
Answers
Answer:
B.18 protons 22 neutrons 18 electrons
Explanation:
Neutral atom of Argon;
Atomic mass = 40amu
Atomic number = 18
Let us find the number of the subatomic particles;
Protons are the positively charged particles in an atom
Electrons are the negatively charged particles
Neutrons do not carry any charges.
Now;
Atomic mass = number of protons + number of neutrons
Atomic number = number of protons
number of protons = 18
In a neutral atom, number of protons equals number of electrons
number of electrons = 18
Number of neutrons = atomic mass - atomic number
Number of neutrons = 40 - 18 = 22
18 protons, 18 electrons and 22 neutrons
Which statement best compares the energy and frequency of green waves to orange waves?
Green waves have a lower frequency and contain less energy than orange waves.
Green waves have a higher frequency and contain more energy than orange waves.
Orange waves have a higher frequency and contain less energy than green waves.
Orange waves have a lower frequency and contain more energy than green waves.
Answers
Orange waves have a lower frequency and contain less energy than green waves.
What is Wave?
A wave is a disturbance or oscillation that travels through space and time, accompanied by the transfer of energy without the transfer of matter. Waves can take many different forms, including sound waves, light waves, water waves, and seismic waves. They can be described in terms of their frequency, wavelength, amplitude, and velocity, among other properties. Waves play a fundamental role in many areas of science and technology, including communication, medicine, and engineering.
The energy of a wave is directly proportional to its frequency, which means that higher frequency waves contain more energy than lower frequency waves. The frequency of a wave refers to the number of complete cycles or oscillations that the wave undergoes per second, and is measured in units of Hertz (Hz).
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1) in your own words, define the octet rule. 2) what steps should be followed in order to construct a lewis structure for a molecule? 3) how many valence electrons are there in the element h? n? 4) how do you calculate how many non-bonding electrons will be in a lewis structure?
Answers
The octet rule is a guideline in chemistry that states that atoms tend to gain, lose, or share electrons in order to achieve a stable electron configuration with eight valence electrons.
1) This configuration is similar to the noble gases, which have full outer electron shells.
2) To construct a Lewis structure for a molecule, the following steps should be followed:
a) Determine the total number of valence electrons for all atoms in the molecule.
b) Identify the central atom, usually the least electronegative atom, and place it in the center.
c) Connect the central atom to the surrounding atoms using single bonds.
d) Distribute the remaining electrons around the atoms to satisfy the octet rule, starting with the outer atoms.
e) If the central atom doesn't have an octet, form multiple bonds by converting lone pairs on outer atoms into bonding pairs.
f) Check if all atoms have an octet, except for hydrogen, which only needs 2 electrons.
3) The element H (hydrogen) has 1 valence electron, and the element N (nitrogen) has 5 valence electrons.
4) To calculate the number of non-bonding electrons in a Lewis structure, subtract the number of electrons used in bonding (calculated by the total number of valence electrons used for bonding) from the total number of valence electrons for the atom or molecule. These remaining electrons are the non-bonding electrons.
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each photon in a beam of light has an energy of 4.20 ev. what is the wavelength of this light? group of answer choices 321 nm 103 nm 296 nm 412 nm 420 nm
Answers
The energy of a photon, E, is related to its wavelength, λ, by the equation: the wavelength of the light is approximately 293 nm.
Wavelength is the distance between two consecutive points on a wave that are in phase, or have the same phase, and can be measured as the distance from one peak of the wave to the next. Wavelength is commonly denoted by the Greek letter lambda (λ) and is usually measured in meters (m), but can also be measured in other units such as nanometers (nm), micrometers (µm), or angstroms (Å).
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True or False. Chemical changes only rearrange the elements that are
already present.
True or False. The reactants and the products of a chemical equation
always have the same number of atoms.
Answers
Here's link to the answer:
tinyurl.com/wpazsebu
why is oil not a mineral? (choose 2)
Answers
Minerals do not include crude oil or natural gas. The most obvious difference between gas and oil is that they lack crystal structures and are not solids. Originally derived from rotting plants and animals, they are organic as well.
What is known as crystal?Any solid material that is a crystal has its constituent atoms arranged in a specific pattern, and its surface regularity mirrors its internal symmetry.
Is crystalline a gem?When it comes to gemstones, only rare, precious, or quasi minerals, like diamond, and even some organic bases, like amber, are used, as opposed to crystals, which can be any element arranged in a geometric form. Although some crystals could be made to sparkle similarly, they are typically cut or polished in a manner that causes the gem shimmer and glisten.
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Which term describes a mixture of 48 percent iron, 22 percent chromium, and 30 percent palladium?
Answers
Alloy.
You would be most likely to use a slicing machine if you were using the __________ method to produce cookies.
Answers
You would be most likely to use a slicing machine if you were using the icebox method to produce cookies.
In the icebox method a type of cookie in which the dough is made, rolled into a stick, and refrigerated until the dough hardens. The dough can be removed from the refrigerator, cut into individual pieces, and then baked. The rest of the dough is returned to the refrigerator until needed.
Icebox method, also known as refrigerator cookies, are sliced and baked cookies. The dough is formed into logs, chilled in the refrigerator (also called an icebox), sliced , and then baked.
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Convert solar day into mintues
Answers
Answer:
There are 24*60 minutes in a day (ignoring the imperfections of the natural world, the Earth and Sun). So there are 24*60 valid 24 hour times (excluding seconds) on a digital clock.
A measure of time representing the interval between consecutive passages of the Sun across the meridian, averaged over one year. 1 day = 24 hr (86,400 sec) and 60 minutes.
hope it helps ya mate! :-P
what is the chemical equation for
3fe(s)+4h2o(l)→fe3o4(s)+4h2(g)
Answers
Answer:
3fe s )+ 4h2o G )= fe3o4 s )+ 4h2 G
Explanation: 3Fe(s) + 4H2O(g) → Fe3O4(s) + 4H2(g) (i) Iron metal is getting oxidised. (ii) Water is getting reduced. (iii) Water is acting as reducing agent.
Explanation:
i make a search
True or false? First nations people along the west coast of british columbia used smelting technology to create copper plaques
Answers
First nations people along the west coast of British Columbia used smelting technology to create copper plaques is false.
Smelting process is the form of extractive metallurgy to produce a metal from its ore. it is the process of melting and separation of charges . it is extensive energy process. Plaques are made by pouring molten metal in to a mold. and when it gets cools , it solidified into a copper solid plaque. first nation people use copper as hunting weapons, spear tools etc. copper is metal.
Thus, First nations people along the west coast of British Columbia used smelting technology to create copper plaques is false.
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Which is NOT TRUE of minerals? They cannot be made by any plant or animal. They are in the simplest chemical form when we eat them. The minerals in our food supply come from our environment and the earth. They are broken down when exposed to heat and oxygen.
Answers
The correct answer is (d) They are broken down when exposed to heat and oxygen.
The minerals are inorganic substances which are obtained from earth's crust. It is a naturally occurring inorganic element or compound having an orderly internal structure and characteristic chemical composition, crystal form, and physical properties.
Common minerals include quartz, feldspar, mica, amphibole, olivine, and calcite. They are used by plants and animals to perform various physiological functions. Plants obtain minerals from the soil. Animals get minerals from plants or other animals.
Therefore, options (a), (b), and (c) are correct because minerals are not produced by plants and animals. Minerals are in their simplest chemical form, and minerals are obtained from the earth's crust and environment. They are not broken down when exposed to heat and oxygen. So, option (d) is incorrect. Hence, the correct option is (d) They are broken down when exposed to heat and oxygen.
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The law of original horizontality explains:
A why rocks harden
B why rocks appear in layers
C how sedimentary rock forms
D why rock layers are always flat
EARTH SCIENCE
Answers
Answer:
c) how sedimentary rock forms
A radioactive substance decreases by 65% each hour. Find the hourly decay factor. The hourly decay factor is__
Answers
A radioactive substance decreases by 65% each hour. Find the hourly decay factor. The hourly decay factor is 0.35.
Chemicals in the class of radionuclides (also known as radioactive materials) have unstable atomic nuclei. They become stable by undergoing modifications in the nucleus (spontaneous fission, alpha particle emission, neutron conversion to protons, or the opposite).
A radioactive atom will naturally emit radiation in the form of energy or particles in order to transition into a more stable state. The difference between radioactive material and the radiation it emits must be made.
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Give any two reasons why we need to separate things in our daily life.
Answers
Answer:
1: They could get mixed up and then it messes other stuff up, 2: It keeps you orgnized
Explanation:
The graph represents the change in that occurs when food is cooked over a charcoal grill. Which statement correctly explains the graph?A. The reactants are unlit charcoal that has already released its energy, and the products are charcoal that has already burned.B. The reactants are charcoal that has already burned and released its energy, and the products are unlit charcoal.C. The reactants are unlit charcoal, and the products are charcoal that has already burned and released its energy.D. The reactants are charcoal that has already burned, and the products are unlit charcoal that has already released its energy.
Answers
The answer is C.
The reactants are charcoal that is unlit + oxygen and the products are the burnt charcoal + energy.
\(C_xH_y+O_{2\text{ }}\rightarrow CO_2+H_2O\text{ + heat}\)So for every combustion reaction like this one, CxHy is the wood. So before you light the wood, it is actally a reactant together with oxygen, because without oxygen the wood will not burn. So under the influence of heat, wood produces substances like carbon dioxide and heat, the moment you see wood burning it it already producing products, CO2 and heat (which is the fire). This is a combustion reaction.
Combustion reaction is exothermic because it releases energy.
What is the specific volume of a sample of dry air from Earth’s atmosphere if the pressure is 50 kPa and
the temperature is 263 K?
Answers
To determine the specific volume of a sample of dry air, we can use the ideal gas law. The ideal gas law equation is:
PV = nRT
Where:
P = Pressure (in Pascal)
V = Volume (in cubic meters)
n = Number of moles of the gas
R = Ideal gas constant (8.314 J/(mol·K))
T = Temperature (in Kelvin)
To convert the given pressure and temperature to the SI units (Pascal and Kelvin), we have:
Pressure = 50 kPa = 50,000 Pa
Temperature = 263 K
Now, we can rearrange the ideal gas law equation to solve for volume (V):
V = (nRT) / P
Since we're dealing with a specific volume, we need to determine the volume per unit mass. Therefore, we'll consider one kilogram (kg) of dry air.
To calculate the number of moles (n) of air in one kilogram, we need to know the molar mass of dry air. The molar mass of dry air can be approximated as 28.97 g/mol.
1 kg of air = 1000 g
Number of moles (n) = (mass of air) / (molar mass of air)
n = (1000 g) / (28.97 g/mol)
Now we can substitute the values into the equation:
V = [(1000 g) / (28.97 g/mol)] * (8.314 J/(mol·K)) * (263 K) / (50,000 Pa)
V/n ≈ 0.0434 m³/mol is the specific volume of the dry air sample.
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If a solid mixture of the three aromatic compounds shown below is placed in 3 m hcl, which is likely to dissolve?.
Answers
Ethyl 4-aminobenzoate is likely to dissolve in 3 M HCl as it is a base and can react with the acid to form a salt, which is soluble in water.
The three aromatic compounds are ethyl 4-aminobenzoate, 2-nitrotoluene, and 1,3,5-trimethylbenzene. When these solids are placed in 3 M HCl, only the compound with basic properties (ethyl 4-aminobenzoate) is likely to dissolve. This is because HCl is a strong acid that dissociates completely in water to produce H+ ions.
When HCl is added to a basic compound like ethyl 4-aminobenzoate, the H+ ions react with the lone pair of electrons on the nitrogen atom of the amine group, neutralizing the basicity of the compound and producing a water-soluble salt. On the other hand, the other two compounds, which are not basic, will not react with HCl and will not dissolve in the acidic solution. Therefore, ethyl 4-aminobenzoate is the most likely compound to dissolve in 3 M HCl.
The complete question is
If a solid mixture of the three aromatic compounds shown below is placed in 3 m hcl, which is likely to dissolve?
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Determine the carburizing time necessary to achieve a carbon concentration of 0. 30 wt% at a position 4 mm into an iron–carbon alloy that initially contains 0. 10 wt% C. The surface concentration is to be maintained at 0. 90 wt% C, and the treatment is to be conducted at 1100°C. Use the diffusion data for γ-Fe in Table 5. 2. ( Callister, Materials Science and Engineering, 9th ed. , John Wiley & Sons, Inc. , 2014) Express your answer in hours to three significant figures
Answers
The carburizing time necessary to achieve a carbon concentration of 0.30 wt% at a position 4 mm into an iron-carbon alloy is 63.4 hours.
To determine the carburizing time necessary to achieve a carbon concentration of 0.30 wt% at a position 4 mm into an iron-carbon alloy, we can use Fick's second law of diffusion:
\(DC_{surface} / 2 = (C_{surface} - C_{4mm}) / erf(x / (2 * \sqrt{Dt} ))\\\)
where D is the diffusion coefficient, \(C{surface}\\\) is the surface carbon concentration (0.90 wt%), C_4mm is the carbon concentration at the position 4 mm into the alloy (0.10 wt%), x is the distance from the surface (4 mm), and t is the carburizing time we want to find.
We can use the diffusion coefficient for γ-Fe at 1100°C from Table 5.2, which is D = \(6.0 * 10^{-12} m^2/s.\)
Substituting the given values, we get:
\((6.0 * 10^{-12} m^2/s) * (0.90 - 0.30) / 2 = (0.90 - 0.10) / erf(4 mm / (2 * \sqrt{6.0 * 10^{-12} m^2/s} ))\)
Simplifying the left-hand side, we get:
\(1.8 * 10^{-12} m^2/s = (0.80) / erf(4 mm / (2 * \sqrt{(6.0 * 10^{-12} m^2/s) * t)})))\)
Taking the inverse error function of both sides, we get:
\(erf(4 mm / (2 * \sqrt{6.0 * 10^{-12} m^2/s) * t)} ) = 0.000346\)
Substituting this back into the previous equation, we get:
\(1.8 * 10^{-12} m^2/s = (0.80) / 0.000346\)
Solving for t, we get:
t = 63.4 hours
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Is silicon(IV) oxide the same as silicon dioxide
Answers
Answer:
Yes, it is
Explanation:
Silicon (IV) oxide, commonly known as silica is a substance that majorly constitutes SAND. It has the chemical formula, SiO2, which contains a combination of silicon and oxygen.
The IUPAC name of SiO2 is Silicon IV oxide, which can also be referred to as Silicon dioxide because the structure the compound contains two (-di) oxygen atoms. Hence, based on the question, silicon(IV) oxide is the same as silicon dioxide.
what element is being oxidized in the following redox reaction? c3h8o2(aq) k2cr2o7(aq) → c3h4o4(aq) cr 3(aq)
Answers
C: carbon is getting oxidised in the reaction. Oxidation and reduction both takes place in a redox reaction.
In k2Cr2O7 , the K is in + 1 oxidation state , Cr is in + 6 oxidation state, and O is in -2 oxidation state
On the right hand side Cr is in +3 oxidation state that means Cr is getting reduced in the reaction.
In C3H8O2 , H and O are ih their general oxidation states +1 and -2 respectively. Here alcoholic group is getting oxidised to carboxylic group. So C is getting oxidised.
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Answer:
C3h8o2
Explanation: oxidation and reduction simultaneously occurs in a redox reaction. Atoms in a molecule during oxidation and reduction changes the oxidation state, in case of oxidation, it increases while in the case of reduction it decreases.
In the given reaction K,Cr, and O have oxidation number +1,+6 and -2 in K2Cr2O7. But on the right side, the oxidation state of Cr changes to +3 and gets reduced in the reaction. Similarly, C3H8O2 undergoes oxidation to C3H8O4,where the alcoholic group get oxidized to carboxylic acid.
How many moles of fe3o4 can be produced when 12.00 mol fe react with 6.00 mol o2?
Answers
When 12.00 moles of Fe react with 6.00 moles of O2, the number of moles of Fe₃O₄ that can be produced is 4.00 moles.
To determine the number of moles of Fe3O₄ produced, we need to consider the balanced chemical equation for the reaction between Fe and O₂, which is:
4Fe + 3O₂ -> 2Fe3O₄
From the balanced equation, we can see that the mole ratio between Fe and Fe₃O₄ is 4:2 or 2:1. This means that for every 4 moles of Fe consumed, 2 moles of Fe3O₄ are produced.
Given that we have 12.00 moles of Fe, we can calculate the moles of Fe3O₄ produced as follows:
moles of Fe₃O₄ = (12.00 moles of Fe) * (2 moles of Fe3O₄ / 4 moles of Fe)
Simplifying the expression, we find:
moles of Fe3O₄ = 6.00 moles of Fe₃O₄ / 4
Therefore, the number of moles of Fe3O₄ that can be produced is 4.00 moles.
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Need the answer ASAP!!!
Select the correct answer.
A student puts a glass of water in the freezer. Later, he notices ice forming on the surface of the water. Which property of water best explains
why ice forms on its surface?
OA
Ice has more surface tension than liquid water,
OB.
Ice is less dense than liquid water.
OC.
Ice has a lower freezing point than liquid water.
OD
Ice is more cohesive than liquid water.
O E.
Ice can dissolve more oxygen than liquid water.
Answers
Answer:
The Ice is Less Dense than the Water
Explanation:
I just answered this one myself, and the explanation is also just that Ice isn't dense enough to sink.
a student wants to prepare 0.13 m nano3 for a lab experiment in 250-ml volumetric flask. how many grams of nano3 need to be weighted out to dissolve in the volumetric flask?
Answers
In order to prepare 0.13 m nano3 for a lab experiment in a 250-ml volumetric flask, a student needs to weigh out 2.76gof nano3 to dissolve in the flask.
A form of laboratory glassware used to produce solutions is a volumetric flask. A volumetric flask is a bulb with a flat bottom and an extended neck that is calibrated to retain a specific volume at a mark on the neck. The flask can also be referred to as a graduated flask. The volume of the NaNO3 solution is 250 mL, and its molarity is 0.13 M. 250 mL of 0.15 M NaNO3 is calculated as (250/1000)L * (0.13 mol/L) = 0.0325 mol. Weight of 0.0375 mol is required since the molar mass of NaNO3 is 85 g/mol. 2.76g of NaNO3 are equal to 0.0325 mol*(85 g/mol). It is necessary to weigh 2.76 g of NaNO3.
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Choose the molecules that contains sphingosine.
a. sphingomyelins molecule
b. molecule
c. molecule
d. a phosphatidylcholine
Answers
Answer:
a phosphatidylcholine
The molecule that contains sphingosine is a phosphatidylcholine compound.
What is a compound?
Compound is defined as a chemical substance made up of identical molecules containing atoms from more than one type of chemical element.
Molecule consisting atoms of only one element is not called compound.It is transformed into new substances during chemical reactions. There are four major types of compounds depending on chemical bonding present in them.They are:
1)Molecular compounds where in atoms are joined by covalent bonds.
2) ionic compounds where atoms are joined by ionic bond.
3)Inter-metallic compounds where atoms are held by metallic bonds
4) co-ordination complexes where atoms are held by co-ordinate bonds.
They have a unique chemical structure held together by chemical bonds Compounds have different properties as those of elements because when a compound is formed the properties of the substance are totally altered.
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Consider the reaction below: Na(s) + H₂O(l)= NaOH(aq) + H₂(g) 1. Indicate that the reaction is an oxidation-reduction reaction . 2.State the substances oxidized and reduced. 3.State the reducing agent and the oxidizing agent. 4. Write the balance half ionic equation for the oxidation and reduction equation.
Answers
The reaction is an oxidation-reduction reaction because here Sodium is oxidized from Na to Na⁺ while hydrogen is reduced from H⁺ to H₂⁰.
The reaction below: 3Na(s) + 3H₂O(l)= 3NaOH(aq) + H₂(g)
1. The reaction is an oxidation-reduction reaction because here Sodium is oxidized from Na to Na⁺ while hydrogen is reduced from H⁺ to H₂⁰.
2. The substances oxidized are Na and reduced. is H⁺.
3. The reducing agent is Na and the oxidizing agent is H₂O.
4. half ionic equation for the oxidation
Na => Na⁺ + e⁻
The half ionic equation for the reduction equation.
H₂O + e⁻ => H₂
An oxidation-reduction reaction is any chemical response in which the oxidation number of a molecule, atom, or ion changes by way of gaining or losing an electron. Redox reactions are common and crucial to some of the basic features of lifestyles, such as photosynthesis, respiration, combustion, and corrosion or rusting.
Oxidation is a chemical procedure. it is defined as a method that occurs whilst atoms or agencies of atoms lose electrons. some other manner to define oxidation is when a chemical species gains oxygen or loses hydrogen. whilst these activities occur, oxidation takes area.
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a sample of radioactive isotope is found to have an activity of 114 bq imediately after it is pulled from the reactor that formed the isotope. its activity 3 h, 50 min later is measured to be 80.2 bq. find the decay constant
Answers
The decay constant for the radioactive isotope in this problem is approximately 0.069\(h^-^1\).
The activity of a radioactive isotope is the rate at which it decays, and is measured in becquerels (Bq). The activity of a sample of radioactive material decreases over time as the number of radioactive nuclei in the sample decreases due to radioactive decay.
The rate of radioactive decay is described by the first-order rate law, which relates the rate of decay to the number of radioactive nuclei present in the sample. The rate constant (λ) for radioactive decay is a characteristic property of the isotope and is related to its half-life (t1/2) by the equation:
t1/2 = ln(2)/λ
where ln(2) is the natural logarithm of 2, which is approximately 0.693.
To find the decay constant for the radioactive isotope in the given problem, we can use the following equation:
A = A0 e^(-λt)
where A is the activity at time t, A0 is the initial activity, and t is the time elapsed since the initial measurement.
Substituting the given values into this equation, we get:
80.2 Bq = 114 Bq e^(-λ(3 h 50 min))
Converting the time elapsed to hours, we get:
t = 3.833 h
Substituting this value, we get:
80.2 Bq = 114 Bq e^(-λ(3.833 h))
Dividing both sides by 114 Bq, we get:
0.704 = e^(-λ(3.833 h))
Taking the natural logarithm of both sides, we get:
ln(0.704) = -λ(3.833 h)
Solving for λ, we get:
λ = -ln(0.704)/3.833 h
λ ≈ 0.069 h^-1
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If 5.00 mol of hydrogen gas and 1.20 mol of oxygen gas react, what is the limiting reactant? 2H2(g) + O2(g) — 2H2O(1) H2 O2 neither H2 or 02
Answers
The limiting reactant is oxygen gas (O2) because it will run out first and limit the amount of product that can be formed.
To determine the limiting reactant in this reaction, we'll first look at the balanced chemical equation:
2H₂(g) + O₂(g) → 2H₂O(l)
Now, we'll compare the available moles of each reactant to their stoichiometric ratios in the equation. We have 5.00 moles of H₂ and 1.20 moles of O₂.
For H₂, divide the available moles by its stoichiometric coefficient (2): 5.00 mol / 2 = 2.50 mol
For O₂, divide the available moles by its stoichiometric coefficient (1): 1.20 mol / 1 = 1.20 mol
Since 1.20 mol of O₂ is less than 2.50 mol of H₂, O₂ is the limiting reactant in this reaction.
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Between the two elements Neon (Ne) and Silicon (Si) which is more stable explain your reasoning?
Answers
Answer:
Neon is a gas and silicon is a solid i solved this for my chemistry teacher dr Thomas project this week
Explanation:
gasses are naturally less stable then non metalloids