Answer:
Explanation:
so, limiting reactants are the reactant which limit the continuing of the reaction or in simple word they are the element that run out first and are totally consumed
equation :
2koh+h2so4⇒ k2so4 +2h2o
if we have 4 mol of h2so4 and 3 mol of 2koh
number of produced moles of k2so4 on consuming all :
h2so4 ⇒ k2so4
1 mol 1 mol
4 mol ?mol
no of mol of k2so4 if all h2so4 is consumed 4 mol
2koh⇒ k2so4
2 mol 1 mol
3 mol ?mol
no of mol of k2so4 if we consume all koh = 1.5 mol
since the koh produces less mol on consuming it all
the koh is the limiting reactant
According to the wave-mechanical model
of the atom, electrons are located in
with 24.1 moles of P4O10 how many moles of H3PO4 could be made
The reaction of an acid and a base produce water and a
Answer:
The answer is " salt".
Explanation:
Hey there!
When any acids and base react with eachother, they forms water and respective salts.
For example:
HCl + NAOH = NACl + H2O.
Hope it helps!
In an experiment to study the formation of HI (g), H2 (g+ I2(g)→ 2HI (g), H2 (g) and I2(g) were placed in a sealed container and allowed to react. on one set of axes, sketch concentration vs time curves for H2 and Hi. Explain the concept of a dynamic equilbrium.
In an experiment to study the formation of HI (g), H2 (g) + I2 (g) → 2HI (g), H2 (g) and I2 (g) were placed in a sealed container and allowed to react. On one set of axes, the concentration vs time curves for H2 and HI would look like a parabola, where the highest concentration of the reactants are at the beginning, and gradually decline as the reaction reaches equilibrium. The concept of dynamic equilibrium is that the rates of the forward and reverse reaction are equal, and the concentrations of the products and reactants remain constant.
Dynamic equilibrium is a state of a chemical system in which the rate of the forward reaction is equal to the rate of the reverse reaction. In this state, the concentrations of reactants and products remain constant over time as they continue to react with each other. The system does not appear to be changing since the forward and backward reactions occur at the same rate.
The formation of HI(g) from H2(g) and I2(g) represents a reversible reaction. Initially, the concentration of H2(g) is high and the concentration of HI(g) is zero. As the reaction proceeds, the concentration of H2(g) decreases while the concentration of HI(g) increases. Once the system reaches dynamic equilibrium, the concentration of both H2(g) and HI(g) remains constant.
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draw the organic product formed when 1−hexyne is treated with h2o, h2so4, and hgso4. click the draw structure button to launch the drawing utility.
The organic product formed when 1−hexyne is treated with H₂O, H₂SO₄, and HgSO₄ will be 2-hexanone (structure attached).
This reaction is an example of an oxymercuration reaction of the organic product 1−hexyne.
Oxymercuration is shown in three steps to the right. The nucleophilic double bond attacks the mercury ion, releasing an acetoxy group. The mercury ion's electron pair attacks carbon on the double bond, generating a positive-charged mercuronium ion. Mercury's dxz and 6s orbitals give electrons to the double bond's lowest unoccupied molecular orbitals.
In the second stage, the nucleophilic H₂O attacks the highly modified carbon, freeing its mercury-bonding electrons. Electrons neutralize mercury ions by collapsing. Water molecules have positive-charged oxygen.
In the third stage, the negatively charged acetoxy ion released in the first step attacks the hydrogen of the water group, generating the waste product HOAc. The two electrons in the oxygen-hydrogen link collapse into oxygen, neutralizing its charge and forming alcohol.
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Find the volume of 5.74 grams of NO2 (Hint: use two factors)
Answer:
1.2 cm^3
Explanation:
5.74 grams of a something occupies a volume of 1.2 cm^3 .
a schottky defect pair consists of an interstitial and a vacancy. a schottky defect pair consists of an interstitial and a vacancy. true false
A schottky defect pair consists of an interstitial and a vacancy. a schottky defect pair consists of an interstitial and a vacancy.False.
A Schottky defect pair consists of two vacancies, one from the cation and one from the anion lattice sites, resulting in a missing ion pair in the crystal structure. This defect pair is commonly observed in ionic crystals with high coordination numbers, where the cations and anions have similar sizes and charges.
The absence of these ions creates a defect that can impact the crystal properties such as ionic conductivity and mechanical strength. On the other hand, interstitial defects occur when an atom or ion occupies an interstitial site, a small gap between atoms in the crystal lattice.
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A solid being added to a liquid to make a mixture. What is the name of this process?.
The process of adding a solid to a liquid to make a mixture is called Dispersion. The mixture can be a solution or a suspension.
For the mixture to be totally in a state of equilibrium, the mixture has to be a solution, which means that the solid particles have fully dissolved in the liquid, otherwise known as a solvent.
Dispersions could result in different mixtures which are named according to how they appear. An example is a suspension, which appears to be partly dissolved in the liquid to form a semi-solid mixture.
Dispersions could also result in emulsions and colloids, all of which have large particles and are non-crystalline in nature.
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How many Joules of energy are there in one photon of orange light whose wavelength is 630nm?
The energy are there in one photon of orange light whose wavelength is 630nm is \(3.15401\times10^{-19}\) Joules.
W=c/v, c=speed of light, v=frequency
\(6.3 \times 10^-7=3 \times 10^8/v\)
\(v=3 \times 10^8 / 6.3 \times 10^-7\)
\(v=4.76 X 10^14 Hz\)-frequency of the yellow light.
E=hv, h=Planck's constant,
\(E=(4.76 \times 10^14)Hz \times 6.62607×10^-34 J s\)
\(E=3.15401\times10^{-19}\) Joules- the energy of a single photon of yellow light.
What is Planck's constant?Planck's constant or Planck's constant, is a fundamental physical constant of quantum mechanics. The constant gives the ratio of the energy of the photon to its frequency, and for mass-energy equivalent, the ratio of mass to frequency.
In quantum mechanics, energy is exchanged and absorbed in certain amounts called quanta. The Planck constant is a number that defines the amount of energy in these quantities and expresses how small things can be. Learn more about Planck's constant in this infographic.
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An ore of zinc contains zinc carbonate.
The equation for the reaction when is carbonate is heated is:.
What is the name of this type of reaction?
The reaction is an example of a decomposition reaction in which Zinc Carbonate is decomposed into two products that is Zinc oxide and Carbon dioxide.
What is Zinc carbonate?Zinc carbonate is an odorless and white sand-like solid. It is insoluble in water and is used in cosmetics, ointments, porcelain, pottery and rubber.
When Zinc carbonate is heated, it produces Zinc oxide and Carbon dioxide. When white powdery solid Zinc carbonate is heated, it turns yellow.
Carbon dioxide gas evolved is confirmed by passing the gas over lime water and it turns the lime water milky.
The reaction is: ZnCO3 --> ZnO + CO2
The reaction is an example of a decomposition reaction in which Zinc Carbonate is decomposed into two products that is Zinc oxide and Carbon dioxide.
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Two moles of an ideal gas occupy a volume V. The gas expands isothermally and reversibly to a volume
3V. (a) Is the velocity distribution changed by the isothermal expansion? Explain. (b) Use Eq.
(Microscopic state) to calculate the change in entropy of the gas. (c) Use Eq. (reversible isothermal
process) to calculate the change in entropy of the gas. Compare this result to that obtained in part (b
The change in entropy calculated using the microscopic state equation is equal to the change in entropy calculated using the reversible isothermal process equation multiplied by Avogadro's number.
How is the change in entropy determined using the microscopic state equation, and how does it compare to the change in entropy calculated using the reversible isothermal process equation?(a) The velocity distribution of an ideal gas is described by the Maxwell-Boltzmann distribution, which depends only on temperature. Since the expansion is reversible isothermal, the temperature remains constant throughout the process. Therefore, the velocity distribution of the gas does not change during the isothermal expansion.
(b) The equation for the change in entropy of an ideal gas in terms of its microscopic state is given by:
ΔS = kB * ln(W2/W1)
where ΔS is the change in entropy, kB is the Boltzmann constant, W2 is the number of microstates corresponding to the final volume (3V), and W1 is the number of microstates corresponding to the initial volume (V).
In this case, we have two moles of gas, so the number of particles is fixed. The number of microstates is proportional to the volume raised to the power of the number of particles:
W2/W1 = (3V/V)^(2N) = 3^(2N)
where N is the number of moles of gas.
Substituting this into the equation for ΔS, we have:
ΔS = kB * ln(3^(2N))
(c) The equation for the change in entropy of an ideal gas during a reversible isothermal process is given by:
ΔS = nR * ln(V2/V1)
where ΔS is the change in entropy, n is the number of moles of gas, R is the molar gas constant, V2 is the final volume (3V), and V1 is the initial volume (V).
In this case, we have:
ΔS = 2R * ln(3V/V)
Comparing the results from part (b) and part (c), we can see that:
ΔS (part b) = kB * ln(3^(2N))
ΔS (part c) = 2R * ln(3V/V)
The quantities kB and R are related by the equation:
R = N_A * kB
where N_A is Avogadro's number.
Since kB and R have a linear relationship, we can write:
ΔS (part c) = N_A * kB * ln(3V/V) = N_A * ΔS (part b)
Therefore, the result obtained in part (c) is equal to the result obtained in part (b) multiplied by Avogadro's number.
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the water in a beaker has a volume of 50 millimeters, is this an extensive property?
No, the volume of water in a beaker is not an extensive property.
Extensive properties are those that depend on the amount or size of the substance being measured. In other words, they are properties that change with the quantity of the substance. Examples of extensive properties include mass, volume, and total energy.
In the given scenario, the volume of water in the beaker is 50 milliliters. This volume remains the same regardless of the quantity of water present. Whether it's 50 milliliters or 500 milliliters, the volume measurement does not change. Therefore, the volume of water in the beaker is an example of an intensive property.
Intensive properties are independent of the amount or size of the substance. They are characteristics that remain constant regardless of the quantity of the substance. Examples of intensive properties include temperature, density, and color.
It's important to note that the distinction between extensive and intensive properties depends on the specific property being considered. While volume is typically an extensive property for a bulk substance, in the case of a fixed volume of water in a beaker, it becomes an intensive property.
In summary, the volume of water in a beaker is not an extensive property but rather an intensive property because it does not change with the quantity of the substance.
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why is it useful to group large number of things?
Which piece of information would be most helpful indetermining whether a hydrocarbon is saturated orunsaturated?a the melting point of the hydrocarbonb the number of carbon atomsc the number of hydrogen atomsdthe type of bonds between carbon atoms in thestructure
Answer:
\(D\)Explanation:
Here, we want to select the most important information piece to determine saturation
The best way to check for this is to check the kind of bonds between the carbon atoms in the molecule
When there are double or triple covalent bonds between the carbon atoms, then, we can be sure that there is a degree of unsaturation (alkenes, alkynes)
If we have single bonds only, then the molecule is saturated
What is the molality of a solution prepared by dissolving 225 mg of glucose (C6H12O6) in 5.00 mL ofethanol (density = 0.789 g/mL)
How are the following aspects of a reaction affected by the addition of a catalyst?.
Any reaction that has a catalyst added to it has its activation energy reduced, accelerating the rate of the reaction. Although it doesn't initiate the reaction, it lowers the energy needed to do so. Furthermore, doing so causes the catalyzed reactions to produce an intermediate product.
The catalyst's properties are the key idea used to address this question. The molecules known as catalysts have a strong tendency to alter the rate of a reaction. It should be noted that the catalyst itself does not change significantly.
A catalyst accelerates both the forward and backward reactions at a faster rate. It also lowers the activation energy for both forward and backward reaction.
Without a catalyst, the reaction would speed up in any direction. However, a catalyst can never increase the rate of a reaction in both directions at the same time—neither forward nor backward. A catalyst lowers the activation energies of both forward and backward reactions, causing them to accelerate in the desired direction.
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Most substances only exist in one state of matter.
True
or
False
What is the molarity of a NaCl solution containing 9.0
moles of NaCl in 3.0 L of solution?
Answer:
3 M
Explanation:
Molarity equation: M = n/v
n = moles of solute
v = liters of solution
9 moles of NaCl / 3 L
9/3 = 3 M
Which of the following best represents and explains the formula for a compound made from nitrogen and hydrogen?
Answer:NH4, because nitrogen needs four electrons, and each hydrogen needs one electron.
Explanation:
what is the hydroxide concentration in a solution at 25.0∘c with [h3o ]=4.6×10−4 m?
The hydroxide ion concentration is 2.17 × 10⁻¹¹ M.
Hydrogen ion concentration of solution= [H3O+] = 4.6 × 10⁻⁴ M
The concentration of the hydroxide ion can be calculated using the relationship between the two ions, that is:[H₃O⁺][OH⁻] = 1.0 x 10⁻¹⁴ M²
[H₃O⁺] = 4.6 x 10⁻⁴, we can substitute to get:
[(4.6 × 10⁻⁴ M) (x)] = 1.0 × 10⁻¹⁴ MX = [OH⁻] = (1.0 × 10⁻¹⁴ M²)/(4.6 × 10⁻⁴ M)X = 2.17 × 10⁻¹¹ M [OH⁻]
Hence, the hydroxide ion concentration is 2.17 × 10⁻¹¹ M.
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Please help me and I’ll give you brainiest!!!!!!!!!
Have a wonderful day!!:)))
Answer:
Explanation:
C
The diagram below shows a food web in a woodland.
If a certain organism is a secondary consumer, what best explains its position in the food web?
A X, because organism X feeds on producers
B Y, because organism Y feeds on producers
C X, because organism X feeds on a carnivore
D Y, because organism Y feeds on a herbivore
Answer:
Y because organism y feed on herbivores
Explanation:it means y is carnivores or omnivores
Explanation:
which observations support boyle's law? select one or more: the product of a gas's pressure and volume is constant. pressure and volume both increase at the same rate. when volume of a gas is decreased, its pressure will increase. as gas pressure decreases, its volume increases.
Boyle’s law is supported by the following options - (a) product of pressure and volume is constant, (c) decrease in volume leads to increase in pressure, and (d) decrease in pressure leads to increase in volume.
Boyle's law, an experimental gas law, states that as a container's capacity rises, a gas's pressure tends to drop.
According to Boyle's law, in a closed system with constant temperature and gas volume, the absolute pressure a given mass of an ideal gas exerts is inversely proportional to the volume it occupies.
According to this, the volume of a gas is inversely proportional to the pressure it exerts at a given temperature. In other words, a gas will condense to fit into an enclosed area when it is poured into it, but the pressure it exerts on the container will rise.
Therefore, (a) the product of the pressure and volume of a gas is constant, (c) The pressure will increase with a decrease in the volume of the gas, and (d) the pressure decreases with an increase in the volume of the gas.
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calculate the mass of mgco3 precipitated by mixing 10.00 ml of a 0.200 m na2co3 solution with 5.00 ml of a 0.0650 m mg(no3)2 solution.
The mass of Magnesium carbonate is 0.275 g.
The balanced chemical reaction is shown below,
Na₂CO₃ + Mg(NO₃)₂ → 2 NaNO₃ + MgCO₃
0.200 M 0.0650 M ?
10.0 5.00 mL ?
Since the volume and concentration of Mg(NO₃)₂ and Na₂CO₃ is given, we can calculate the number of moles for each of them and then determine the limiting reagent.
Convert the volume of Mg(NO₃)₂and Na₂CO₃ to liters:
5.00 mL x ( 1 L/1000 mL ) = 5.00 x 10⁻³ L
10.00 mL x ( 1L/ 1000 mL ) = 1.000 x 10 ⁻² L
Number of mol Mg(NO₃)₂ = (0.0650 mol /L) x 5.00 x 10⁻³ L
= 3.25 x 10⁻⁴ mol Mg(NO₃)₂
Number of mol Na₂CO₃ = (0.200 mol / L) x 1 x 10⁻² L
= 2.000 x 10⁻³ mol Na₂CO₃
Limiting reagent = 3.25 x 10⁻⁴ mol Mg(NO₃)₂ x ( 1 mol Na₂CO₃ / mol Mg(NO₃)₂ )
= 3.25 x 10⁻⁴ mol Na₂CO₃ required .
Limiting reagent is Mg(NO₃)₂ since 2.25 x 10⁻⁴ mol Na₂CO₃ is required to
react completely with 2.25 x 10⁻⁴ Mg(NO₃)₂, and there is an excess.
Number of moles of MgCO₃ produced is calculates as follows:
= 3.25 x 10⁻⁴ mol Mg(NO₃)₂ x ( 1 mol MgCO₃ / 1 mol Mg(NO₃)₂ )
= 3.25 x 10⁻⁴ mol MgCO₃
The formula for calculating number of moles is given as :
Mole = mass/molar mass
⇒ Mass= Mole × molar mass
Mass = 3.25 x 10⁻⁴ mol MgCO₃ x 84.31 g/mol
= 0.275 g
Hence, the mass of MgCO₃ is 0.275 g
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Which of the following are NOT properties of an base
Answer:
Reacts with salt to from an acid
convert 0.75km to meter
Answer:
\(0.75 \times 1000 = \)
Explanation:
Use ur calculator
Answer:
750m
Explanation:
1 km is equal to 1000m. Therefore all you have to do is multiply 0.75 by 1000 and you will get 750. Hope this helps! :)
4) A car is speeding along with
5,000 N of force. It
experiences 400 N of friction
and then hits a zombie, which
exerts 500 N of force back
against the car. What is the net force and is it balanced?
The net force of the car speeding with of 5000N of force is 4100N force and it is not even near to be balanced.
What is net force?The net force is the total of all the forces acting on an object, according to its definition. Mass can be accelerated by net force. Whether a body is at rest or in motion, another force is at work on it. When a system has a lot of forces acting on it, the phrase "net force" is used.
We have given,
Applied force Fa = 5000N
Frictional force Ff = -400N
Force exerted back by zombie Fz = -500N
The net force formula is given by
\(F_{Net}\) = F₁ + F₂ + F₃
\(F_{Net}\) = 5000 - 400 - 500
\(F_{Net}\) = 4100N
Therefore, The net force of the car speeding with of 5000N of force is 4100N force and it is not even near to be balanced.
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Please help this is my chemistry work
For a given reaction, the rate constant triples when the temperature is increased from 32C to 71C. What is the activation energy for the reaction? (R = 8.314 J/K Mol)
For a given reaction, the rate constant triples when the temperature is increased from 32C to 71C. The activation energy for the reaction is 70.2 kJ/mol.
The Arrhenius equation relates the rate constant (k) of a chemical reaction to the temperature (T), the activation energy (Ea), and the gas constant (R):
\(k = Ae^{(-Ea/RT)}\)
where,
A is the pre-exponential factor (also known as the frequency factor).
We can use the given information to set up a ratio of rate constants at two different temperatures:
\(\frac{k_2}{k_1} = exp \left [(Ea/R) \times \left (\frac{1}{T_1} - \frac{1}{T_2} \right ) \right ]\)
where
k₁ is the rate constant at the lower temperature (32°C or 305 K) and
k₂ is the rate constant at the higher temperature (71°C or 344 K).
We know that the rate constant triples, so:
k₂ = 3k₁
Substituting this into the equation above and solving for Ea, we get:
\(\frac{3k_1}{k_1} = exp \left [(Ea/R) \times \left (\frac{1}{305\ K} - \frac{1}{344\ K} \right ) \right]\)
\(3 = exp \left [(\left \frac{Ea}{8.314\ J/K Mol} \right ) \times (0.00328 K^{-1}) \right ]\)
Taking the natural logarithm (ln) of both sides, we get:
\(\ln(3) = \left (\frac{Ea}{8.314\ J/K Mol} \right) \times (0.00328 K^{-1})\)
Solving for Ea, we get:
Ea = -ln(3) × 8.314 J/K Mol / 0.00328 K⁻¹
Ea = 70200 J/mol
Therefore, the activation energy for the reaction is 70.2 kJ/mol.
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What is the name of the ability to use up energy in one second
Answer:
Work
Explanation:
Work is defined as the ability to use energy in one second and its SI unit is same as energy that is joule.
Work refers to the energy utilized to displace an object over a distance by an external force in one direction and in given time period which can be one second as well.
Hence, the correct answer is "work".