During which of the following processes does a glucose molecule break down into ethanol?
Aerobic respiration
Alcoholic fermentation
Lactic acid fermentation
Photosynthesis
A glucose molecule breaks down into ethanol during the process of alcoholic fermentation, which is an anaerobic pathway alternative to aerobic respiration.
During the process of alcoholic fermentation, a glucose molecule is broken down into ethanol. This anaerobic process follows the initial step of glycolysis, where one glucose molecule is converted into two pyruvate molecules. This is followed by the conversion of pyruvate into acetaldehyde and carbon dioxide, after which the acetaldehyde is further reduced into ethanol.
This reduction step regenerates NAD⁺ from NADH, which is essential for glycolysis to continue and for the overall fermentation to proceed.
Fermentation processes like alcoholic fermentation and lactic acid fermentation are alternative pathways to aerobic respiration, differing by their end products--ethanol and carbon dioxide in the former, and lactic acid in the latter. Whereas aerobic respiration is a different process entirely in which glucose breaks down into carbon dioxide and water using oxygen, yielding a much higher amount of ATP compared to fermentation.
The correct answer to the student's question is, therefore, alcoholic fermentation, where glucose is broken down into ethanol in the absence of oxygen.
Air and water are both considered to be ____.
Answer:
Elements.
Explanation:
Modern Chemistry says these are elements.
Answer:
elements
Explanation:
Researchers have developed cars which navigate and steer themselves. Aside from cost, what is most likely the main factor keeping these systems from being placed on all new cars?
A) Production facilities
B) Time constraints
C) Driver confusion
D) Technological issues
Answer:
A
Explanation:because since not all of them hove the sa
me program the pro duction is slow
An 8 N force is applied to a 2 kg object. What is the magnitude of the object's acceleration? A. 0.25 m/s² B. 4 m/s² C. 6 m/s² D. 16 m/s²
Answer: 4m/s2 (B)
Explanation:
Force = mass × acceleration
Force given is 8N
Mass=2kg
Acceleration =?
Substitute into the formula
F=ma
8=2a
A=8/2
A=4m/s2
Acceleration used is 4m/s2 (B)
Answer:
b
Explanation:
Mario uses a hot plate to heat a beaker of 50mL of water. He used a thermometer to measure the temperature of the water. The water in the
beaker began to boil when it reached the temperature of 100 degrees Celsius. If Mario completes the same experiment with 25 mL of water, what would happen to the boiling point? *
The boiling point decreases as the volume decreases.
Explanation:
The Temperature - Volume law otherwise called as Charles law is applied, which says that the volume of the given gas at constant pressure is directly proportional to the temperature measured in Kelvin. As the volume increases, the temperature also increases, if the volume decreases, then the temperature also decreases.
[tex]$\frac{V}{T} = constant[/tex]
As per the Charles law, here the volume is decreased from 50 ml to 25 ml so the boiling point also decreases.
[PLEASE HELP, WILL MARK BRAINLEST]
What part of a wind turbine provides motion to convert into electricity?
A.
generator
B.
blades
C.
tower
D.
rotor
Answer:B
Explanation: The blades spin making the insides create friction making electricity I think
As the number of effective collisions between reacting particles increases, the rate if a chemical reaction:
A- increases
B- decrease
C- remains the same
The rate of a chemical reaction increases as the number of effective collisions between reacting particles increases.
Explanation:The rate of a chemical reaction increases as the number of effective collisions between reacting particles increases. This is because an increase in the number of collisions leads to a greater chance of particles colliding with enough energy and the right orientation to react. As a result, the rate of the reaction increases.
A balloon contains helium gas expands from 230ml to 860 ml as more helium is added. What was the initial quantity of helium present if the expanded balloon contains 3.8x10^-4 mol, assuming constant temperature and pressure?
Answer:
n₁ = 1.0× 10⁻⁴ mol
Explanation:
Given data:
Initial volume of balloon = 230 mL
Initial number of moles of He =?
Final number of moles of He = 3.8 × 10⁻⁴ mol
Final volume of balloon = 860 mL
Solution:
The given problem will be solve through Avogadro law,
"Number of moles of gas and volume are directly proportional to each other at constant temperature and constant pressure"
Mathematical relationship:
V₁/n₁ = V₂/n₂
No we will put the values.
230 mL /n₁ = 860 mL/ 3.8 × 10⁻⁴ mol
n₁ = 230 mL× 3.8 × 10⁻⁴ mol/ 860 mL
n₁ = 874 × 10⁻⁴ mol. mL / 860 mL
n₁ = 1.0× 10⁻⁴ mol
Answer: the answer is n1=n2v1/v2
Explanation:
hope this helped
How many moles of nitric acid are needed to make 2 liters of a solution of nitric acid in water with a molarity of 1?
Answer: 0.5 moles
Explanation:
Nitric acid has a chemical formula of HNO3.
Given that:
Amount of moles of HNO3 = Z (let unknown value be Z)
Volume of HNO3 solution = 2L
Molarity of HCl solution = 1M
Recall that molarity of a solution is obtained by dividing the amount of moles by volume in liters
i.e Molarity = Amount in moles/volume
1M = Z x 2L
Z = (1M / 2L)
Z = 0.5 moles
Thus, 0.5 moles of nitric acid are needed to make 2 liters of its solution.
Excluding plasma, which state of matter has the most kinetic energy?
es )
Answer:
Gas
Explanation:
How would the images change for a weak acid solution of the same concentration?
Answer: Strong acids disassociate more compared to weak acids. Since there are more ions, due to more disassociation, there are more ions for electrons to flow through.
Explanation:
Images would show an increase in both the dissociated ions (H+ ions and anions) and the undissociated weak acid molecules in a concentrated solution of weak acid. However, the proportion between them remains unchanged, indicating the properties of a weak acid.
Explanation:In a solution of a weak acid, the acid does not fully dissociate, meaning not all of its molecules separate into hydrogen ions (H+) and anions. Instead, there is an equilibrium between the undissociated acid molecules and the ions. If the concentration of the weak acid solution was increased, the number of acid molecules, both dissociated and undissociated, would increase proportionally.
The images or visual representation of this would show an increase in both the dissociated ions (H+ ions and anions) and the undissociated weak acid molecules. However, the proportion between them would remain the same if no other factors are changed, showing the characteristics of a weak acid.
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What is the mole fraction of NaCl in a mixture containing 7.21 moles NaCl, 9.37 moles KCL, and 3.42
moles LiCI?
Answer : The mole fraction of NaCl in a mixture is, 0.360
Explanation : Given,
Moles of [tex]NaCl[/tex] = 7.21 mole
Moles of [tex]KCl[/tex] = 9.37 mole
Moles of [tex]LiCl[/tex] = 3.42 mole
Now we have to calculate the mole fraction of [tex]NaCl[/tex].
[tex]\text{Mole fraction of }NaCl=\frac{\text{Moles of }NaCl}{\text{Moles of }NaCl+\text{Moles of }KCl+\text{Moles of }LiCl}[/tex]
Now put all the given values in this formula, we get:
[tex]\text{Mole fraction of }NaCl=\frac{7.21}{7.21+9.37+3.42}=0.360[/tex]
Therefore, the mole fraction of NaCl in a mixture is, 0.360
Answer:
.36
Explanation:
true or false: an apple looks red because it absorbs red light?
Answer:
Explanation:
True
I need help !!!!!!!!!!! Plz
1) How will increasing the surface area of one or more reactants affect the reaction rate of a system?
A It will change the products of the reaction.
B It will speed up the reaction.
C It will slow down the reaction.
D It will have no effect on the reaction.
2)Which change will usually speed the reaction rate of a chemical system?
A increase the concentration of a reactant
B decrease the temperature of the system
C decrease the pressure of a system
D increase the concentration a product
3) Some metals found in a car’s exhaust system speed up a chemical reaction but are not used up.
How do these metals work to speed up the reaction?
A They act as catalysts.
B They increase the pressure in the system.
C They increase the temperature of the system.
D They increase the concentration of reactants.
4) How does a catalyst affect the activation energy of a reaction?
A A catalyst increases the activation energy needed for a reaction.
B A catalyst does not affect the activation energy of a reaction.
C A catalyst decreases the activation energy needed for a reaction.
D A catalyst eliminates the need for activation energy.
5) Which theory explains the increase in reaction rate caused by raising the temperature or raising the pressure of a system?
A potential energy theory
B activation energy theory
C surface area theory
D collision theory
Answer:
all answers in image:
Explanation:
happy searching
The correct options are B, A, A, C and D.
What is reaction rate?The rate of reaction or reaction rate is the speed at which reactants are converted into products. When we talk about chemical reactions, it is a given fact that rate at which they occur varies by a great deal.
Some chemical reactions are nearly instantaneous, while others usually take some time to reach the final equilibrium.
Increasing the surface area of one or more reactants affect the reaction rate of a system will speed up the reaction.
increase the concentration of a reactant will usually speed the reaction rate of a chemical system
Some metals found in a car’s exhaust system speed up a chemical reaction but are not used up and they act as catalysts.
A catalyst decreases the activation energy needed for a reaction.
The theory explains the increase in reaction rate caused by raising the temperature or raising the pressure of a system is collision theory.
Therefore, The correct options are B, A, A, C and D.
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One major problem with wind and solar energy is that they are conditional. Explain how hydroelectric pumped storage could be used to eliminate this obstacle?
Answer:
These pumps allow the energy to be saved for later use, whenever the load increases.
Explanation:
These hydroelectric pumps are a vast connection of ancillary grid services. These act as storage plants. These enable an electric provider to balance energy and provide stability. This network not only has reservoirs but also controls the frequency of the energy produced.
Due to this, within a few seconds, large amounts of electricity can be produced.
Hydroelectric Pump is a set of two water reserves which pump water through turbines to generate energy at various required elevations. The produced energy is stored by various electric power systems.
Which of these is most similar to the Aztec political system?
O
A. A country makes laws to ensure that religion has a small role in
politics.
O
B. A group of priests create all policies related to religion in a
country
O
C. A king decides to declare war on a neighboring country without
the input of any advisers.
O
D. Men, but not women, in a country are allowed to vote for their
preferred leaders.
The Aztec political system most closely resembles a theocracy where religious leaders influence political decisions, making Option B the correct answer as it aligns with the role of priests in Aztec governance.
The Aztec political system was most similar to a theocratic form of government where religious leaders held significant power in the state's political structure. Comparing the options provided to the Aztec system:
Option A suggests an attempt to keep religion out of politics, which is not characteristic of the Aztec system.
Option B reflects a scenario where religious leaders create policies, aligning closely with the Aztec theocracy where priests and the emperor, who was also seen as a divine figure, had substantial influence.
Option C implies an autocratic rule by a king without advice, which is not similar to the Aztec system that had a ruling elite and a structure of nobility.
Option D discusses a gender-based voting system, which is unrelated to the theocratic nature of the Aztec political system.
Therefore, the correct answer is B, a group of priests create all policies related to religion in a country. This reflects the Aztec civilization where political decisions were often intertwined with religious beliefs and practices, and religious leaders played a central role in governance.
If you have three moles of S2, how many moles of Al2S3 can be produced?
Answer:
2
Explanation:
S2x3=S6
Al2S3
S6/S3=2
Calculate the molarity of a solution, given that its volume is 820 mL and that it contains 7.4 g of ammonium chloride, NH,CI.
Answer:
The correct answer is 0.17 M
Explanation:
We have the following data:
V= 820 ml x 1 L/1000 ml = 0.82 L
m = 7.4 g
Ammonium chloride has the chemical formulae NH₄Cl. So, we calculate the molecular weight (MM) of NH₄Cl from the molar mass of N, H and Cl as follows:
MM NH₄Cl = 14 g/mol + (4 x 1 g/mol ) + 35.4 g/mol = 53.4 g/mol
Now we have to calculate the number of moles of NH₄Cl we have in the solution. For this, we divide the mass (m) into the molecular weight of NH₄Cl (MM):
moles NH₄Cl = m/MM = 7.4 g/53.4 g/mol = 0.138 moles
The molarity of the solution is the number of moles of NH₄Cl in 1 liter of solution. So, we have to divide the number of moles of NH₄Cl into the volume in liters as follows:
M = number of moles NH₄Cl/V = 0.138 moles/0.82 L = 0.169 mol/L ≅ 0.17 M
Answer:
Molarity= 0.169M
Explanation:
Applying n= CV
V=820ml= 0.82dm3
n= m/M = 7.4/53.5 = 0.138mol
0.138= C× 0.82
C= 0.169M
What do these two changes have in common? snails growing shells rust forming on a bicycle frame Select all that apply.
A. Both are only physical changes.
B. Both are caused by heating.
C. Both are chemical changes.
D. Both are caused by cooling
Answer:
Im not completely sure about the answer, but A and C are Wrong
Explanation:
This is because the snail growing its shell is a physical change. For the shell of a snail to grow, the snail must consume Calcium to grow its shell. And would grow it just like how we grow our fingernails!
Rust forming on a bicycle frame is an example of a chemical change. This is caused by metal being exposed to oxygen. Just like when you leave your bike outside in the rain, it'll get rusty!
Both snails growing shells and rust forming on a bicycle frame are chemical changes. The former involves the secretion of calcium carbonate, while the latter is the formation of iron oxide due to the reaction of iron with oxygen.
Explanation:The two changes, snails growing shells and rust forming on a bicycle frame, have a common feature - they are both chemical changes.
Snails growing shells is a chemical change because the process of shell growth involves the secretion of calcium carbonate, a chemical process.
Similarly, when a bicycle frame rusts, it is also a chemical change. This is because rust, or iron oxide, forms when oxygen in the air reacts with the iron in the metal - this is a chemical reaction.
Hence option C is correct.
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Describe the current model of the atom and the characteristics of each of the 3 subatomic particles. Be prepared to provide the number of protons, neutrons and electrons for a given element.
Answer:
The current model of the atom and the characteristics of each of the 3 subatomic particles are the electron cloud which contains 1 subatomic particle the electron which has negative charge and weights 1/2000 AMU the electron cloud surrounds the nucleus, the nucleus contains two subatomic particles the proton which has positive charge and weights one AMU and the neutron which has neutral/no charge and weights one AMU.
This question involves two calculations. The answer to the first part will be
used for calculating the second part.
Aluminum powder, Al, will react and burn with oxygen gas, O2, to produce
aluminum oxide, Al2O3, according to the following balanced equation:
4 Al + 302
+ 2Al2O3
a) If 85.1 grams of aluminum react with excess oxygen in the air, how many
grams of aluminum oxide, Al2O3, will theoretically be produced?
b) If after the reaction is completed, 116.9 g of Al2O3 were actually
recovered and measured, what is the percent yield of the reaction?
Answer :
(a) The mass of [tex]Al_2O_3[/tex] produced is, 15.2 grams.
(b) The percent yield of the reaction is, 72.5 %
Explanation :
Part (a) :
Given,
Mass of [tex]Al[/tex] = 85.1 g
Molar mass of [tex]Al[/tex] = 27 g/mol
First we have to calculate the moles of [tex]Al[/tex]
[tex]\text{Moles of }Al=\frac{\text{Given mass }Al}{\text{Molar mass }Al}=\frac{85.1g}{27g/mol}=3.15mol[/tex]
Now we have to calculate the moles of [tex]Al_2O_3[/tex]
The balanced chemical equation is:
[tex]4Al+3O_2\rightarrow 2Al_2O_3[/tex]
From the reaction, we conclude that
As, 4 moles of [tex]Al[/tex] react to give 2 moles of [tex]Al_2O_3[/tex]
So, 3.15 moles of [tex]Al[/tex] react to give [tex]\frac{2}{4}\times 3.15=1.58[/tex] mole of [tex]Al_2O_3[/tex]
Now we have to calculate the mass of [tex]Al_2O_3[/tex]
[tex]\text{ Mass of }Al_2O_3=\text{ Moles of }Al_2O_3\times \text{ Molar mass of }Al_2O_3[/tex]
Molar mass of [tex]Al_2O_3[/tex] = 102 g/mole
[tex]\text{ Mass of }Al_2O_3=(1.58moles)\times (102g/mole)=161.2g[/tex]
Therefore, the mass of [tex]Al_2O_3[/tex] produced is, 161.2 grams.
Part (b) :
Now we have to calculate the percent yield of the reaction.
[tex]\text{Percent yield}=\frac{\text{Experimental yield}}{\text{Theoretical yield}}\times 100[/tex]
Experimental yield = 116.9 g
Theoretical yield = 161.2 g
Now put all the given values in this formula, we get:
[tex]\text{Percent yield}=\frac{116.9g}{161.2g}\times 100=72.5\%[/tex]
Therefore, the percent yield of the reaction is, 72.5 %
Which feature is most likely found at a divergent boundary?
Answer:
Fault-block mountain
In geography, fault-block mountains arise when the Earth's crust pulls apart and divides. Some parts of the Earth are pushed upwards whereas the other moves downward forming a divergent boundary. In geological studies, a divergent boundary can be described as a linear feature which arises due to plate tectonics which are being pulled apart from each other. Hence, fault-block mountains are most likely to be seen in a divergent boundary.
Most active divergent plate boundaries occur between oceanic plates and exist as mid-oceanic ridges. Divergent boundaries also form volcanic islands, which occur when the plates move apart to produce gaps that molten lava rises to fill.
Fault-block mountain
A diverging border is a linear structure that occurs as plate tectonics draw apart from each other in geological investigations.Fault-block mountains form as the Earth's crust separates and pulls away.As a result, fault-block mountains are most likely to appear at a divergent boundary.Fault-block mountain is most likely found at a divergent boundaryFor more information:
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The pressure in an automobile tire filled with air is 245.0 kPa. If Po2 = 51.3 kPa, Pco2 = 0.10 kPa, and P-others = 2.3 kPa, what is Pn2?
Answer:
PN₂ = 191.3 Kpa
Explanation:
Given data:
Total pressure of tire = 245.0 Kpa
Partial pressure of PO₂ = 51.3 Kpa
Partial pressure of PCO₂ = 0.10 Kpa
Partial pressure of others = 2.3 Kpa
Partial pressure of PN₂ = ?
Solution:
According to Dalton law of partial pressure,
The total pressure inside container is equal to the sum of partial pressures of individual gases present in container.
Mathematical expression:
P(total) = P₁ + P₂ + P₃+ ............+Pₙ
Now we will solve this problem by using this law.
P(total) = PO₂ + PCO₂ + P(others)+ PN₂
245 Kpa = 51.3 Kpa + 0.10 Kpa + 2.3 Kpa + PN₂
245 Kpa = 53.7 Kpa+ PN₂
PN₂ = 245 Kpa - 53.7 Kpa
PN₂ = 191.3 Kpa
The partial pressure of nitrogen is determined to be 191.3 kPa.
The total pressure in the automobile tire is given as 245.0 kPa. To find the partial pressure of nitrogen (PN₂), we can use Dalton's Law of Partial Pressures, which states that the total pressure is the sum of the partial pressures of all gases present.
Here's the step-by-step calculation:
Total pressure (Ptotal) = 245.0 kPa Partial pressure of oxygen (PO₂) = 51.3 kPa Partial pressure of carbon dioxide (PCO₂) = 0.10 kPa Partial pressure of other gases (P-others) = 2.3 kPaUsing Dalton's Law:
Ptotal = PO₂ + PCO₂ + P-others + PN₂
Substituting the given values: 245.0 kPa = 51.3 kPa + 0.10 kPa + 2.3 kPa + PN₂
Rearranging to solve for PN₂:
PN₂ = 245.0 kPa - (51.3 kPa + 0.10 kPa + 2.3 kPa)
PN₂ = 245.0 kPa - 53.7 kPa
PN₂ = 191.3 kPa
Therefore, the partial pressure of nitrogen in the car tire is 191.3 kPa.
16.4 mL of 0.135 M NaOH is used to neutralize 46.9 mL of HCl. The concentration of the HCl solution is ____ M (3 decimal places).
The concentration of the HCl solution is 0.047 M.
Explanation:
Data given about acid and base:
volume of acid Vacid = 46.9 ml
molarity of acid =?
volume of the base (NaOH) = 16.4 ml
molarity of the base = 0.135 M
To know the concentration of the acid in this reaction, the formula used in titration is used. It is
Macid X Vacid = Mbase X Vbase
the formula is rewritten as:
Macid = [tex]\frac{Mbase X Vbase}{Vacid}[/tex]
putting the values in the equation:
Macid = [tex]\frac{0.135 X 16.4}{46.9}[/tex]
= 0.047 M
the concentration of the acid i.e HCl in the solution is of 0.047 M.
Which of these is true about the mantle?
A. It is solid and does not move.
B. It moves quickly and unpredictable.
C. It moves in very slow currents.
D. It can suddenly cause huge fault lines.
Answer:
c.
Explanation:
it moves in slow convection currents, hope this helps!
The mantle moves in very slow currents, behaving like a non-Newtonian fluid, allowing the solid, yet plastically flowing rock to drive the motion of tectonic plates within the Earth's lithosphere.
The mantle of the Earth is characterized by its ability to move in very slow currents. This is due to the mantle behaving like a non-Newtonian fluid, similar to the material Silly Putty, which can deform under a slow, continuous stress. The mantle, although predominantly solid rock, flows plastically rather like a very viscous liquid, such as honey or corn syrup. The lithosphere, which includes the crust and the rigid uppermost part of the mantle, moves with the tectonic plates atop the slowly flowing asthenosphere. This process is integral to plate tectonics and influences the movement of the Earth's crust.
Among the choices provided, option C - It moves in very slow currents is the correct description regarding the mantle.
a balloon is filled with 3.60 L of H2 gas at STP. If the balloon is taken into the sea where the pressure is 2.50 atm and the temperature is 10.00c, what is the new volume of H2 gas in liter?
The new volume of [tex]H_2[/tex] gas is required.
The new volume of the required gas is 1.49 L.
Ideal gas laws[tex]P_1[/tex] = Initial pressure = 1 atm
[tex]P_2[/tex] = Final pressure = 2.50 atm
[tex]T_1[/tex] = Initial temperature = 273.15 K
[tex]T_2[/tex] = Final temperature = [tex]10.00^{\circ}\text{C}=10+273.15=283.15\ \text{K}[/tex]
[tex]V_1[/tex] = Initial volume = 3.60 L
[tex]V_2[/tex] = Final volume
From the ideal gas laws we have
[tex]\dfrac{P_1V_1}{T_1}=\dfrac{P_2V_2}{T_2}\\\Rightarrow V_2=\dfrac{P_1V_1T_2}{T_1P_2}\\\Rightarrow V_2=\dfrac{1\times 3.6\times 283.15}{273.15\times 2.5}\\\Rightarrow V_2=1.49\ \text{L}[/tex]
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The new volume of H₂ gas in the balloon, taken to the sea where the pressure is 2.50 atm and the temperature is 10.00°C, is approximately 3.63 liters. This calculation is based on the ideal gas law using the initial conditions at STP.
To find the new volume of H₂ gas in the balloon when taken to the sea, we can use the ideal gas law, which relates the pressure (P), volume (V), temperature (T), and the number of moles (n) of a gas. The ideal gas law is represented as:
PV = nRT
Where:
P = Pressure (in atm)
V = Volume (in liters)
n = Number of moles
R = Universal gas constant (0.0821 L·atm/mol·K)
T = Temperature (in Kelvin)
First, let's calculate the number of moles of H₂ gas in the balloon at STP (Standard Temperature and Pressure):
Pressure at STP (P₁) = 1 atm
Temperature at STP (T₁) = 273.15 K (0°C + 273.15)
Using the ideal gas law:
P₁V₁ = nRT₁
1 atm × 3.60 L = n × 0.0821 L·atm/mol·K × 273.15 K
n ≈ 0.150 moles
Now, we can use the new conditions at the sea:
Pressure at the sea (P₂) = 2.50 atm
Temperature at the sea (T₂) = 10.00°C + 273.15 = 283.15 K
We want to find the new volume (V₂) of H₂ gas
P₂V₂ = nRT₂
Substituting the values:
(2.50 atm) × V₂ = (0.150 moles) × (0.0821 L·atm/mol·K) × (283.15 K)
Now, solve for V₂:
V₂ ≈ (0.150 moles × 0.0821 L·atm/mol·K × 283.15 K) / 2.50 atm
V₂ ≈ 3.63 L
So, the new volume of H₂ gas in the balloon when taken to the sea is approximately 3.63 liters.
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Octylphenol ethoxylate is a detergent that is commonly used in chemistry laboratories. It is a thick, yellowish liquid. A chemist dissolves a small amount of octylphenol ethoxylate in a liter of benzene, an organic liquid, then adds a small amount of toluene, another organic liquid. Identify each component of the solution as a solute or a solvent.
Benzene is a
a) solute.
b) solvent.
Toluene is a
a) solute.
b) solvent.
Octylphenol ethoxylate is a
a) solute.
b)solvent.
the answer on edge2020 is solvent, solute, solute
Answer:
1) Solvent
2) Solute
3) Solute
Explanation:
According to the concept of solubility, benzene is a solvent and toulene and octylphenol ethoxylate are solutes.
What is solubility?
Solubility is defined as the ability of a substance which is basically solute to form a solution with another substance. There is an extent to which a substance is soluble in a particular solvent. This is generally measured as the concentration of a solute present in a saturated solution.
The solubility mainly depends on the composition of solute and solvent ,its pH and presence of other dissolved substance. It is also dependent on temperature and pressure which is maintained.Concept of solubility is not valid for chemical reactions which are irreversible. The dependency of solubility on various factors is due to interactions between the particles, molecule or ions.
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If 0.214 mol of argon gas occupies a volume of 343.4 mL at a particular temperature and pressure, what volume would 0.375 mol of argon gas occupy under the same conditions?
Answer in - ATM
Answer:
601.8 mL
Explanation:
For an ideal gas kept at constant temperature and pressure, the number of moles of the gas is directly proportional to the volume of the gas:
[tex]n\propto V[/tex]
where
n is the number of moles
V is the volume of the gas
Therefore, for a gas undergoing a transformation at constant temperature and pressure, we can write:
[tex]\frac{V_1}{n_1}=\frac{V_2}{n_2}[/tex]
where here we have:
[tex]V_1=343.4 mL[/tex] is the initial volume of the gas
[tex]n_1=0.214 mol[/tex] is the initial number of moles
[tex]n_2=0.375 mol[/tex] is the final number of moles
Solving for V2, we find the final volume of the gas:
[tex]V_2=\frac{n_2 V_1}{n_1}=\frac{(0.375)(343.4)}{0.214}=601.8 mL[/tex]
The volume would 0.375 mol of argon gas occupy under the same conditions will be "601.8 mL".
Pressure and TemperatureAccording to the question,
Gas initial volume, V₁ = 343.4 mL
Initial no. of moles, n₁ = 0.214 mol
Final no. of moles, n₂ = 0.375 mol
We know that,
Moles of gas ∝ Volume of gas
or,
n ∝ V
and, the relation will be:
→ [tex]\frac{V_1}{n_1} = \frac{V_2}{n_2}[/tex]
then,
The final volume be:
→ V₂ = [tex]\frac{n_2 V_1}{n_1}[/tex]
By substituting the values, we get
= [tex]\frac{0.375\times 343.4}{0.214}[/tex]
= [tex]\frac{128.775}{0.214}[/tex]
= 601.8 mL
Thus the above answer is correct.
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Is it really possible for humans not to alter the natural world around them?
Answer: I'm sure it's possible but we too lazy
Explanation:
ok, I need help with this one!!!!!!!!!!!!!!!!!!!! plz and thank you
Which statement is a correctly written thermochemical equation?
2C8H18 + 25O2 →16CO2 + 18H2O , ΔH = −5,471 kJ/mol
4Fe (s) + 3O2 (g)→2Fe2O3 (s) , ΔH = −3,926 kJ
NH4Cl → NH4+ + Cl–
C3H8 (g) + O2(g)→CO2 (g) + H2O (l), ΔH = −2,220 kJ/mol
The statement that should be rightly mentioned with respect to the equation of thermochemical is 4 Fe (s) + 3O2(g) -------> 2Fe2O3(s) ΔH = -3926 KJ
What is the thermochemical equation?It is a balanced of stoichiometric chemical equation that involved the change with respect to enthalpy, ΔH. Here the reactants and the product state should be considered as the liquid, solid, or in gaseous state.
Also, the value of the heat should be absorbed since ΔH < 0 so the reaction should be considered as the exothermic and ΔH > 0 then the reaction is endothermic.
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The correct thermochemical equation is '4Fe (s) + 3O2 (g) → 2Fe2O3 (s), ΔH = −3,926 kJ', which includes the balanced chemical equation and the enthalpy change for the whole reaction.
Explanation:The question asks which statement is a correctly written thermochemical equation. A proper thermochemical equation includes the balanced chemical equation alongside the enthalpy change (ΔH) for the reaction. The enthalpy change represents the heat absorbed or released during the reaction when it occurs at constant pressure. There is only one correct thermochemical equation provided:
4Fe (s) + 3O2 (g) → 2Fe2O3 (s), ΔH = −3,926 kJ
This equation is balanced and represents the reaction of iron (Fe) with oxygen (O2) to form iron(III) oxide (Fe2O3). The enthalpy change is given for the entire reaction, not per mole, which is the correct way to represent it in a thermochemical equation. The other equations either do not include the enthalpy change in the correct units or are missing it entirely.