To determine the amount of nitrogen dioxide (NO2) produced when lead (II) nitrate (Pb(NO3)2) decomposes and produces 0.0788 grams of oxygen gas (O2), we need to consider the balanced chemical equation for the decomposition reaction.
The balanced chemical equation for the decomposition of lead (II) nitrate is:
2Pb(NO3)2(s) → 2PbO(s) + 4NO2(g) + O2(g)
From the balanced equation, we can see that for every 2 moles of lead (II) nitrate decomposed, we get 4 moles of nitrogen dioxide (NO2) gas produced.
To calculate the amount of nitrogen dioxide (NO2) produced, we need to determine the number of moles of oxygen gas (O2) produced.
First, we need to calculate the molar mass of oxygen gas (O2), which is 32.00 grams/mol (16.00 g/mol for each oxygen atom).
Now, we can calculate the number of moles of oxygen gas (O2) produced:
Moles of O2 = Mass of O2 / Molar mass of O2
Moles of O2 = 0.0788 g / 32.00 g/mol ≈ 0.0024625 mol
Since the balanced equation shows that for every 2 moles of lead (II) nitrate decomposed, we get 4 moles of nitrogen dioxide (NO2) gas, we can use the mole ratio to determine the number of moles of nitrogen dioxide (NO2) produced:
Moles of NO2 = Moles of O2 × (4 moles NO2 / 2 moles O2)
Moles of NO2 = 0.0024625 mol × (4/2) ≈ 0.004925 mol
Therefore, approximately 0.004925 moles of nitrogen dioxide (NO2) are produced when 0.0788 grams of oxygen gas (O2) is generated through the decomposition of lead (II) nitrate.\(\)
MULTIPLE CHOICE QUESTION
Is Pd a Type 1 (fixed charge) metal cation
or a Type 2 (variable charge) metal
cation?
Type 1
Type 2
Pd is a transition metal ion hence it is a type 2 metal cation.
What is transition metal ion?A transition metal ion is an ion that is derived from a transition metal element. Transition metals are a group of elements located in the center of the periodic table and characterized by their ability to form multiple stable oxidation states. This property is due to the presence of unpaired electrons in their d-orbitals, which are involved in chemical reactions.
Transition metal ions play important roles in many chemical and biological processes, including catalytic reactions, the formation of coordination complexes, and the regulation of enzymes. They are also commonly used in applications such as pigments, catalysts, and magnetic materials.
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what do mars, pluto, and Jupiter have in common (science) in 8th grade.
Answer:
they are all planets
Explanation:
lithium (li) bonds with another atom to form a stable molecule with formula lix. based on groups in the periodic table, which atom could represent x?
Based on the groups in the periodic table, the atom that could represent "x" in the stable molecule LiX, where Li is lithium, would be any atom from Group 17, also known as the halogens.
The halogens include elements such as fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).
Lithium, being in Group 1, has a single valence electron that it can donate to another atom to form a stable molecule. The halogens in Group 17 have a valence electron deficiency of one, making them suitable candidates to accept the electron from lithium and form a stable LiX molecule.
Therefore, elements like fluorine (F), chlorine (Cl), bromine (Br), iodine (I), or astatine (At) could represent the atom "x" in the LiX molecule.
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Thank you to everyone who has helped me and because of you i got a 100 on my test
Answer:
Awww! Congrats on the people who helped this person!
Explanation:
:))
which of the following are isoelectronic with s^2-? a. Ar b. b Ca2+ с. A13+ d. K
Isoelectronic species have the same number of electrons. To determine which option is isoelectronic with S^2-, let's first find the number of electrons in S^2-. Sulfur (S) has 16 electrons in its neutral state. With a 2- charge, it gains 2 extra electrons, making it have 18 electrons.
Now, let's compare the given options:
a. Ar (Argon) has 18 electrons in its neutral state, so it is isoelectronic with S^2-.
b. Ca2+ (Calcium ion) has 20 electrons in its neutral state. With a 2+ charge, it loses 2 electrons, making it have 18 electrons. Thus, it is isoelectronic with S^2-.
c. Al3+ (Aluminum ion) has 13 electrons in its neutral state. With a 3+ charge, it loses 3 electrons, making it have 10 electrons. It is not isoelectronic with S^2-.
d. K (Potassium) has 19 electrons in its neutral state. It is not isoelectronic with S^2-.
So, the species isoelectronic with S^2- are a. Ar and b. Ca2+.
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In hydrogen iodide __________________ are the most important intermolecular forces.
(a) dipole-dipole forces
(b) london dispersion forces
(c) hydrogen bonding
(d) covalent bonding
Answer:
Hydrogen bonding
Explanation:
When Hydrogen interacts with a halogen, it forms hygrogen bonding with that halogen(eg. F, CL, I.... N and O) . Hydrogen bonding is the strongest form of covalent bonding
Michelle drove 300 miles in 6 hours. What was Michelle's speed?
30 miles per hour
80 miles per hour
50 miles per hour
60 miles per hour
Michelle drove 50 miles per hour
Explanation:
300 miles divided by 6 hours equals 50 miles per hour.
Miles per hour basically just means
\(\frac{Total number of miles}{total number of hours}\)
You can infer from the use of the word 'per' that you should divide the number of miles by the number of hours to get an average speed.
Similarly, to work out the number of miles driven you could say you travelled 50 miles per hour for 6 hours, so you would multiply 50mph x 6 hours to work the equation in reverse.
A) Calculate the pH of 0. 215 M carbonic acid. Ka1 for carbonic acid is 4. 3 X 10-7.
pH = 3. 52
B) Now, suppose you add some solid sodium hydrogen carbonate to the carbonic acid solution in part A). What will happen to the pH?
The pH will remain the same when the sodium hydrogen carbonate is added.
You can't tell what will happen to the pH.
The pH will rise when the sodium hydrogen carbonate is added.
A buffer is formed and the pH will rise when the sodium hydrogen carbonate is added.
The pH will fall when the sodium hydrogen carbonate is added.
A buffer is formed and the pH will fall when the sodium hydrogen carbonate is added.
A buffer is formed and the pH will remain the same when the sodium hydrogen carbonate is added.
C) Calculate the pH of solution when the concentration of sodium hydrogen carbonate is 0. 820 M.
pH = 6. 94790693688853
A) The pH of 0.215 M carbonic acid with a Ka₁ of 4.3 x 10⁻⁷ is 3.52. B) The addition of solid sodium hydrogen carbonate to the carbonic acid solution will result in the formation of a buffer solution, which will resist changes in pH.
This is because sodium hydrogen carbonate is a weak base that will react with the weak acid, carbonic acid, to form its conjugate base, bicarbonate ion, and water. The bicarbonate ion will then act as a weak acid, reacting with any added strong base, such as hydroxide ion, to maintain the pH of the solution within a certain range. Therefore, the pH will remain relatively stable when sodium hydrogen carbonate is added to the carbonic acid solution.
C) The pH of a 0.820 M solution of sodium hydrogen carbonate can be calculated using the equation for the ionization of bicarbonate ion in water, which is:
HCO₃⁻ + H₂O ⇌ H₂CO₃ + OH⁻
The concentration of OH⁻ can be determined by using the Kw of water, which is 1.0 x 10⁻¹⁴ at 25°C. The pH of the solution can then be calculated using the equation:
pH = pKb + log([HCO₃⁻]/[CO₃²⁻])
where pKb is the negative logarithm of the base dissociation constant, Kb, of bicarbonate ion, which is equal to Kw/Ka₂, and [HCO₃⁻] and [CO₃²⁻] are the concentrations of bicarbonate and carbonate ions in the solution, respectively. The pH of the solution is found to be 6.95
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Which statement best describes the particles in a sample of H2O in the solid phase?Immersive Reader
(10 Points)
They move very quickly and rarely interact.
They move very quickly and frequently collide.
They vibrate in place and have very weak bonds.
They vibrate in place and have very strong bonds.
Answer:
You can describe, the state, the color, the texture, and the odor of matter using your senses. ... As the motion of particles continues to increase, they move even farther apart. ... For example water is normally a liquid at room temperature. When it ... Gases have the most kinetic energy because their particles move very quickly.
Explanation:
Hopefully this helps!
Answer:
They vibrate in place and have very strong bonds.
Explanation:
All solids, in their form, have particles that vibrate in place and strong bonds to keep their form.
The molal boiling-point and freezing-point constants are different for different solvents.
True or False
False. The given statement The molal boiling-point and freezing-point constants are different for different solvents is wrong.
Does the solvent affect freezing point depression?Depression at the Freezing Point. A solution's freezing point is lower than that of the pure solvent. This indicates that for freezing to happen, a solution needs to be cooled to a lower temperature than the pure solvent.
What connection exists between molality and freezing point depression?The number of solute molecules dissolved in one kilogram of the solvent is known as the molality of the solution, and it is directly inversely related to the drop in freezing point.
What transpires when more solvent is introduced in terms of the freezing point?The effect of adding a solute to a solvent affects a solution's freezing point in the opposite way that it affects its boiling point. The freezing point of a solution will be lower than that of a pure solvent. The temperature at which a liquid turns into a solid is known as the freezing point.
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1. Describe the pH scale. (What is the lowest value? Highest value? Neutral value? Which
end is acid? Which end is base?)
Answer:
0 being the lowist 14 being the hieist 0 is the most acidic 14 is the hieist base 7 is nutrol
Explanation:
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14
Show a sample calculation for the determination of [fescn2 ]equil utilizing the molar extinction coefficient from your standardization curve and the beer-lambert law
The concentration of \(FeSCN^{2+}}$\) at equilibrium in our solution is \(5.4 \times 10^{-5} mol/L\).
To determine the concentration of \(FeSCN^{2+}}$\) in a solution at equilibrium, we can use the Beer-Lambert law, which relates the concentration of a colored species in solution to its absorbance at a specific wavelength. The law can be written as A = εcl, where A is the absorbance, ε is the molar extinction coefficient, c is the concentration, and l is the path length of the sample.
To perform this calculation, we need to first create a standardization curve, which is a plot of the absorbance of known concentrations of \(FeSCN^{2+}}$\) at a particular wavelength. Once we have the curve, we can use the slope of the line to calculate the molar extinction coefficient of \(FeSCN^{2+}}$\).
Once we have determined the molar extinction coefficient, we can measure the absorbance of our sample at the same wavelength and use the Beer-Lambert law to calculate the concentration of \(FeSCN^{2+}}$\) in our solution at equilibrium. For example, let's say that our sample has an absorbance of 0.3 at a wavelength of 450 nm and a path length of 1 cm. If our standardization curve has a slope of \(5.6 \times 10^{3} L/mol/cm\), then we can calculate the concentration of \(FeSCN^{2+}}$\) in our sample as:
\($c = \frac{A}{\varepsilon l} = \frac{0.3}{5.6\times 10^3 \text{ L/mol/cm} \times 1 \text{ cm}} = 5.4\times 10^{-5} \text{ mol/L}$\)
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3. What do you notice about the number of valence electrons as you move from left to right across a row or period in the periodic table? (Na Mg Al Si P S Cl Ar)
Answer:
The number of valence electrons increases across the period
Explanation:
Since elements across the period have an additional electron, the additional electrons are arranged around the valence orbit until stability is achieved.
The experiment set-up shown in the picture has a light-proof box with a small hole on one side. What will be the shape of the image of the arrow on the opposite wall?
(The arrow is pointing up in the image of the arrow, also the box has a hole on it's left side.)
A. Left
B. Up
C. Down
D. Right
Answer: A.
Explanation: When light passes through a small hole, it creates an inverted image on the opposite side. In this case, since the arrow is pointing up, the inverted image will appear pointing down on the opposite wall. Furthermore, since the box has a hole on its left side, the inverted image will be shifted towards the left.
a stock solution of 1.00 m nacl is available. how many milliliters are needed to make 100.0 ml of 0.750 m
75 milliliters of stock solution are needed to make 100.0 mL of 0.750 M.
What is the stock solution?
To make a stock solution, weigh out the proper amount of a pure solid or measure out the proper amount of a pure liquid, put it in the right flask, and then dilute it to the desired volume.
NaCl stock solution is, S1 = 1.00 M.
NaCl is, S2 = 0.750 M.
NaCl is, V2 = 100 mL.
Consider, the required volume of NaCl stock solution to make the desired solution is, V1
According to the dilution law,
S1V1 = S2V2
Where, S1 = Initial strength, V1 = Initial volume, S2 = Final strength and V2 = Final volume.
So, 1.00 M *V1 = 0.750 M * 100 mL
V1 = ( 0.750 M * 100 mL) / 1.00 M = 75 mL
Therefore, 75 milliliters of stock solution are needed to make 100.0 mL of 0.750 M.
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How do the products of chemical reactions compare to their reactants?
Question 5 options:
The products often have completely different properties than the reactants.
The products usually weigh more than the reactants.
The products usually have more atoms than the reactants.
The products are usually more toxic than the reactants.
Answer: The products usually weigh more than the reactants.
Explanation:
Answer:
A
Explanation:
i just took the k12 test
which of the following atoms has six valence electrons?
The atom that has six valence electrons is Oxygen (O). Oxygen has the electron configuration of 1s^2 2s^2 2p^4, indicating that it has six valence electrons in its outermost energy level (2s^2 2p^4). Valence electrons are the electrons in the outermost energy level of an atom and are involved in bonding with other atoms to form chemical compounds.
The atom that has six valence electrons is Oxygen (O). Oxygen is found in group 16 of the periodic table, and it has six electrons in its outermost energy level or valence shell.
Valence electrons are the electrons in the outermost energy level of an atom. Oxygen, with an atomic number of 8, has its valence electrons in the second energy level, specifically in the 2p orbital. In the electron configuration of oxygen (1s² 2s² 2p⁴), there are six valence electrons in the 2s and 2p orbitals combined.
The number of valence electrons determines the chemical properties and reactivity of an atom. Oxygen, with its six valence electrons, is known for its ability to form stable covalent bonds with other elements and participate in various chemical reactions. Understanding the valence electron count of an atom helps in predicting its bonding behavior and the types of compounds it can form.
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Which scenario would result in a population growth of zero? Use this formula: population growth = (birth rate + immigration) – (death rate + emigration) 12 individuals emigrate, 12 individuals die, 12 individuals are born, 0 individuals immigrate 16 individuals emigrate, 3 individuals die, 13 individuals are born, 0 individuals immigrate 8 individuals emigrate, 0 individuals die, 20 individuals immigrate,12 individuals are born 10 individuals emigrate, 4 individuals die, 14 individuals immigrate, 0 individuals are born
Answer:
12 individuals are born 10 individuals emigrate, 4 individuals die, 14 individuals immigrate, 0 individuals are born
Explanation:
From the formula:
Population growth = (birth rate + immigration) – (death rate + emigration)
= (b + i) - (d + e)
For the first option, b = 12, i = 0, d = 12, e = 12
population growth = (12+0) - (12+12) = -12
For the second option: b = 13, i = 0, d = 3, e = 16
population growth = (13+0) - (3+16) = -6
For the third option: b = 12, i = 20, d = 0, e = 8
population growth = (12+20) - (0+8) = 24
For the last option: b = 0, i = 14, d = 4, e = 10
population growth = (0+14) - (4+10) = 0
Hence, the last option is the correct option.
Answer:
d because i got a 100%
Explanation:
What is the volume of 0.789 moles of gas that exerts 1.15 atm of pressure at 376 K?
A. 4250 L
B. 0.0294 L
C. 36.5 L
D. 21.2 L
The volume of the gas is 21.2 L. Answer choice D is correct.
The correct option is D.
The Ideal Gas Law equation must be used to determine a gas's volume:
Where P is for pressure, V is for volume, n is for moles, R is for the gas constant, and T is for temperature, we get PV = nRT.
Given are the quantities of 0.789 moles of gas, 1.15 atm of pressure, and 376 K of temperature. R has a constant value of 0.08206 L atm/mol K for gases.
In order to solve the Ideal Gas Law equation, we can enter the following values:
V = (nRT) / P V = (0.789 mol) (0.08206 L atm/mol K) (38 K) / (1.15 atm)
V = 21.2 L
D is the right answer.
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Assuming air to be an ideal gas with a molecular weight of 28.967, what is the density of air at 1atm and 600°C? 0.59 kg/m3 0.40 kg/m3 0.68 kg/m3 0.12 kg/m3
The density of air at 1atm and 600°C assuming air to be an ideal gas with a molecular weight of 28.967 is 0.12 kg/m3.
To solve for the density of air, we can use the ideal gas law, which states that PV=nRT, where P is pressure, V is volume, n is the number of moles of gas, R is the universal gas constant, and T is temperature. We can rearrange this equation to solve for density, which is equal to nM/V, where M is the molecular weight of the gas.
Given that air has a molecular weight of 28.967, we can use this value to find the number of moles of air present in a given volume at a given temperature. Plugging in the values for pressure (1atm), temperature (600°C or 873K), and the universal gas constant (0.08206 L atm/mol K), we can solve for the volume of air that contains one mole of air.
Once we have the volume of air that contains one mole of air, we can calculate the density of air by multiplying the number of moles of air by its molecular weight, and then dividing by the volume of air. The resulting density is 0.12 kg/m3, which is the correct answer.
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The density of air at 1atm and 600°C is 0.59 kg/m3.
Explanation:To find the density of air at 1atm and 600°C, we can use the ideal gas law.
The ideal gas law relates the pressure (P), volume (V), number of moles (n), and temperature (T) of a gas. The equation is given as: PV = nRT, where R is the ideal gas constant.
Using the given molecular weight of air, we can calculate the number of moles of air at 600°C. Since we know the pressure and number of moles, we can find the volume of the air using the ideal gas law. Finally, we can calculate the density by dividing the mass of the air by its volume.
Therefore, the correct answer is 0.59 kg/m3.
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what happens to the boiling point of hydrocarbon compounds when the number of carbon atom increases
A. Decreases
B. Increases
C. Remains the same
D. None of these
I NEED YOUR ANSWER RN GUYSS PLEASEE
Para preparar 1 kilogramo de arcilla se requieren 400 gramos de agua. Si a nivel del laboratorio solo se cuenta con una probeta y sabemos que la densidad del agua es 1100Kg/m3 ¿Cuántos litros de agua se deben añadir?
Answer:
0.364 L
Explanation:
Para resolver este problema es necesario expresar la densidad en g/L.
Para hacer esa conversión primero convertimos m³ en L:
1 m³ = 1000 L1100 \(\frac{kg}{m^3}* \frac{1m^3}{1000L}\) = 1.1 kg/LY después convertimos kg en g:
1.1 kg/L * \(\frac{1000g}{1kg}\)= 1100 g/LFinalmente dividimos la masa deseada (400 g) entre la densidad, para calcular el volumen:
400 g ÷ 1100 g/L = 0.364 Lwhat do the conclusions tell about the experiments?
A) the conclusions tell what other scientists think about the experiment
B) the conclusions tell how the experiments should be repeated
C)the conclusions tell why the data support or reject the hypothesis
D) the conclusions tell if the scientific method was followed
Help Please !!!!!!!!!!!!!!!!
Answer:
C
Explanation:
APEX
the conclusions of an scientific experiment tell why the data support or reject the hypothesis. Thus option C is correct.
What is scientific experiment ?Scientific experiment involve asking different scientific questions, making hypothesis, design experiment, result and conclusion.
A good scientific experiment should have some facts which can be answered by using data analysis.
The types of scientific questions are Verification questions, Theory questions, Experimental questions
The verification question can be solved by collecting data from observation, which include characteristics or properties of a subject.
A theory question refers an imaginative exercise, is not fictional, depend on prior knowledge of the phenomenon being asking about.
The scientific question or an experimental question used to compare the element of a system when altered, it involves variables such as independent, dependent and controlled variables.
Thus option C is correct.
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What do carnivores do and what is another name for them? PLEASE HELP
from our discussion of how water and carbon dioxide interact on mars, what would happen if a large body of liquid water (a big lake perhaps) were to appear on mars?
Carbon dioxide would be absorbed by the water, lowering air pressure, resulting in evaporation or freezing of the water.
The early atmosphere of Mars and its early, universal magnetic field both had a direct and indirect impact on the presence of liquid water on the planet. The atmosphere of Mars was much thicker than it is now about 4 billion years ago. And there was a lot more carbon dioxide in there (and other gases). A greenhouse gas called carbon dioxide contributes to the planet's warming. According to two researchers from Caltech's Jet Propulsion Laboratory, a sizable store of carbon dioxide trapped in the soil of Mars may be responsible for the apparent abrupt shifts in the red planet's temperature over billions of years.
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A student has two samples of NaCl, each one from a different source. Assume that the only potential contaminant in each sample is KCl. The student runs an experiment to determine the percent by mass of chlorine in each sample. From the results of this experiment alone, which of the following questions is most likely to be answered? A. Which sample has the higher purity? B. Which sample has the higher density? C. What is the source of the contaminants present in each of the samples? D. Which sample came from a salt mine, and which sample came from the ocean?
Answer:
The correct option is;
A. Which sample has the higher purity
Explanation:
The information given relate to the presence of two samples of NaCl, from different sources
The only potential contaminant in each of the sources = KCl
The content of the sample = NaCl
The molar mass of NaCl = 58.44 g/mol
The molar mass of KCl = 74.5513 g/mol
Let the number of moles of KCl in the sample = X
For a given mass of NaCl, KCl mixture, we have;
The molar mass of potassium = 39.0983 g/mol
The molar mass of chlorine = 35.453 g/mol
The molar mass of sodium ≈ 23 g/mol
Therefore;
Each mole of KCl, will yield 35.453 g/mol per 74.5513 g/mol of KCl
While each mole of NaCl will yield 35.453 g/mol per 58.44 g/mol of NaCl
Therefore, the pure sodium chloride sample will yield more chlorine per unit mass of sample.
As such if the two samples have the same mass, the sample with the contaminant of KCl will yield less mass of chlorine per unit mass of the sample, from which the student will be able to tell the purity of the solution.
The sample with the higher purity will yield a higher mass chlorine per unit mass of the sample.
The question that will be most likely answered is ( A ) ; which sample has the higher purity
From the question there are two samples of NaCl from different sources that has a contaminant of KCl in each of them .
A student running an experiment to determine the percentage by mass of Chlorine in each sample is to determine which of the sample contains a lesser amount of the contaminant KCl.
Note : The purer the NaCl sample the more chlorine per unit mass of sample.
Hence the question that can be answered by this experiment is which sample has the higher purity.
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What is the purpose of chemistry lab?(solution)
1. Some reactions will present an actual yield lower than the theoretical yield, and this can occur due to many situations, a couple of the reasons why that we can list is that some reactions don't have the reactants actually reacting to form the products, and another reason why is the loss of reactants in the process for many possible situations.
4. According to the solubility curve, if we have 30 grams of NH4Cl at 50°C, the reaction will be unsaturated
Dry ice is a form of carbon dioxide that sublimates at room temperature. At a Halloween party, some students noticed that the dry ice underwent a phase change. Which statement below best describes the change in the energy and physical characteristics of the molecules of carbon dioxide during this process?
A. The molecules experienced a physical change from a gaseous state to a liquid state, releasing energy into the environment and reducing the molecular movement.
B. The molecules experienced a chemical change as the carbon dioxide reacted with oxygen, which released oxygen gas into the environment and increased the molecular movement.
C. The molecules experienced a physical change from a solid state to a gaseous state, which increased the molecular movement and the energy of the carbon dioxide molecules.
D. The molecules experienced a chemical change from a liquid state to a solid state, which reduced the amount of energy between the carbon dioxide molecules and decreased the molecular movement.
Answer:
The molecules experienced a physical change from a solid state to a gaseous state, which increased the molecular movement and the energy of the carbon dioxide molecules
brainliest
The statement which best describes the change in the energy and physical characteristics of the molecules of carbon dioxide during this process is (B) The molecules experienced a chemical change as the carbon dioxide reacted with oxygen, which released oxygen gas into the environment and increased the molecular movement.Hence, The correct option is (B)
What is Physical Change ?Physical changes are those that affect a chemical substance's form but not its chemical content.
Physical changes may normally be used to separate compounds into chemical elements or simpler compounds, but they cannot be used to separate mixtures into their component compounds.
A change in physical attributes accompanies a physical change. Melting, turning into a gas, and changing strength are a few examples of physical qualities.
Therefore, molecules of carbon dioxide during this process is (B) The molecules experienced a chemical change as the carbon dioxide reacted with oxygen, which released oxygen gas into the environment and increased the molecular movement.Hence, The correct option is (B)
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12. Determine the number of moles of boric acid that react in the equation to produce 10 moles of water.
In the preceding equation, 6.67 moles of boric acid (\(H_3BO_3\)) will react to generate 10 moles of water (\(H_2O\)).
To determine the number of moles of boric acid that react in the equation to produce 10 moles of water, we need to examine the balanced chemical equation and use stoichiometry.
1. Begin by examining the balanced chemical equation for the reaction involving boric acid and water. Let's assume the equation is:
\(3H_2O\) + \(3H_2O\) -> \(B_2O_3\) + \(6H_2O\)
2. From the balanced equation, we can see that 2 moles of boric acid (H3BO3) react with 3 moles of water (\(H_2O\)) to produce 6 moles of water (\(H_2O\)).
3. Use the given information that 10 moles of water (\(H_2O\)) are produced. Since the stoichiometric ratio between boric acid and water is 2:3, we can set up a proportion to find the number of moles of boric acid:
2 moles \(H_3BO_3\) / 3 moles \(H_2O\) = x moles \(H_3BO_3\) / 10 moles \(H_2O\)
4. Cross-multiply and solve for x:
(2 moles \(H_3BO_3\))(10 moles \(H_2O\)) = (3 moles \(H_2O\))(x moles \(H_3BO_3\))
20 moles \(H_2O\) = 3x moles \(H_3BO_3\)
5. Divide both sides of the equation by 3 to isolate x:
x moles \(H_3BO_3\) = (20 moles \(H_2O\)) / 3
6. Calculate the value of x:
x moles \(H_3BO_3\) ≈ 6.67 moles \(H_3BO_3\)
Therefore, approximately 6.67 moles of boric acid (\(H_3BO_3\)) will react to produce 10 moles of water (\(H_2O\)) in the given equation.
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pleaseeeeeeeeeee someone help urgent we are writing a test tmr can some one please explain subatomic particles to me...
Answer:
n physical sciences, subatomic particles are smaller than atoms. They can be composite particles, such as the neutron and proton; or elementary particles, which according to the standard model are not made of other particles. Particle physics and nuclear physics study these particles and how they interact.
Explanation:
a particle smaller than an atom (e.g., a neutron) or a cluster of such particles (e.g., an alpha particle).