The oxygen anion in carbon monoxide has an atomic number of 8, an atomic mass of 16, and an electrical charge of -2. how many electrons does the oxygen anion have?
Answers
Explanation:
Oxygen has atomic number eight. This means that the nuclei of all oxygen atoms have eight protons. A neutral oxygen atom will also have eight electrons.
In an oxygen ion with a
2
−
charge, the number of protons is still 8, but the number of electrons is 10.
This results in the oxygen ion having an octet (8) of valence electrons.
Related Questions
We can tell from their structure that fatty acids are a good source of energy because of: Please choose the correct answer from the following choices, and then select the submit answer button. Answer choices their three-dimensional bonding structure. the large number of carbon-carbon and carbon-hydrogen bonds they contain. their hydrophobic nature conferred by their chemical formula. the high potential energy of the carboxylic acid group.
Answers
We can tell from their structure that fatty acids are a good source of energy because of the large number of carbon-carbon and carbon-hydrogen bonds they contain.
Fatty acids serve as a valuable energy source due to the abundance of carbon-carbon and carbon-hydrogen bonds present in their molecular structure.
These compounds, fundamental to the composition of fats and lipids, consist of a carboxylic acid group at one end and a hydrocarbon chain at the other.
The hydrocarbon chain plays a crucial role in the configuration of fatty acids. It encompasses a lengthy series of hydrocarbon units terminated by a polar carboxyl group.
Within these hydrocarbon chains lie numerous carbon-carbon and carbon-hydrogen bonds, which possess substantial energy stored within their molecular bonds.
The breaking of these bonds generates a considerable amount of energy, which can be harnessed by the body for energy production purposes.
This wealth of energy makes fatty acids a favorable source for fueling bodily processes.
Therefore, the primary reason fatty acids are regarded as an efficient energy source lies in the significant quantity of carbon-carbon and carbon-hydrogen bonds they contain.
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Why might having mud in an ecosystem be important?
Mud can replace producers in an ecosystem.
Pigs love to wallow in mud.
Mud can replace consumers in an ecosystem.
An insect needs mud wallows to breed; that insect pollinates several flowers in that ecosystem.
plsssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss answer with one of the options
Answers
An insect needs mud wallows to breed; that insect pollinates several flowers in that ecosystem.
Having mud in an ecosystem is important because Insects are very important as primary or secondary decomposers in the ecosystem. These insects need mud wallows to breed. That insect pollinates several flowers in that ecosystem.
Why do insects like mud?Muddy sediments recycle organic matter back into nutrients for plant photosynthesis. Butterflies and other insects search for moisture, salt, and other nutrients. It's not just damp patches of soil that draw butterflies. Some are attracted by wet sand and dung.An insect needs mud wallows to breed.How do insects play an important role in the ecosystem?Insects like Bees are some of the most important pollinators in the ecosystem.Without bees, most of the plants we rely on would not be able to produce most of the food we eat.Therefore, the mud in an ecosystem is most important as it provides a place for insects to breed and these insects play a major role in the ecosystem like pollination.
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A sample originally contains 24 grams of a radioactive isotope. After 18 days, 18.8 grams of the isotope remain in the sample. What is the half-life of the isotope
Answers
The sample's decay constant for the given time of radioactive decay is 0.0058 days⁻¹. Thus, the half life of the sample is 119.48 days.
What is radioactive decay?Heavy unstable radioactive nuclei undergo radioactive decay by the emission of charged particles. They stable isotopes or new atoms by radioactive decay.
It is given that the sample of 24 grams decays to 18.8 grams within 18 days. The decay constant k can be calculated as follows:
k = 1/t log (Ci/Ct)
Where Ci is the initial amount and Ct be the final amount.
k = 1/18 log (24 g /18.8 g)
= 0.0058 days⁻¹
Now, the half life time of the sample can be calculated as:
t1/2 = 0.693 / k
= 0.693/0.0058 days⁻¹
= 119.4 days.
Therefore, the half life of the sample is 119.4 days.
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at what fluid flow velocities at 20 degree c is the incompressible assumption valid for (a) air; (b) water; (c) benzene; (d) glycerin
Answers
The incompressible assumption is valid for a flow when the Reynolds number is low (Re < 2300) for air and other gases. It is valid for water and other liquids when the Reynolds number is low (Re < 2000).
It is valid for glycerin and other oils when the Reynolds number is low (Re < 100).
Incompressible assumption
For a fluid flow to be considered incompressible, the change in density due to changes in pressure or temperature must be negligible. The fluid is considered to be incompressible if the density changes by less than 5% when the pressure or temperature is varied.
For air, the incompressible assumption is valid for flow velocities less than 2000 feet per minute (fpm) at 20 degrees Celsius. For other gases, the incompressible assumption is valid for velocities less than 100 fpm at the same temperature.
For water, the incompressible assumption is valid for flow velocities less than 3 feet per second (fps) at 20 degrees Celsius. For other liquids, the incompressible assumption is valid for velocities less than 1 fps at the same temperature.
For glycerin and other oils, the incompressible assumption is valid for flow velocities less than 0.2 fps at 20 degrees Celsius.
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When water changes state from solid to liquid to gas, ALL BUT one thing happens. There is no
A) chemical change.
B) physical change.
C) addition of energy.
D) increase in temperature.
Answers
which element do most acid perms use along with tension and waving lotion to process hair?
Answers
Most acid perms use the element hydrogen along with tension and waving lotion to process hair.
Hydrogen is a crucial component in the chemical process of perms, as it helps to break down the disulfide bonds in the hair shaft, allowing it to take on a new shape. Acid perms are specifically designed to have a pH level of around 6.5, which is much lower than that of alkaline perms. This means that acid perms are less harsh on the hair, and are often a better option for those with fragile or damaged hair. In addition to hydrogen, acid perms may also contain other ingredients such as glyceryl monothioglycolate and ammonium thioglycolate, which work in tandem with tension and waving lotion to create beautiful, long-lasting curls. When used correctly, acid perms can help to add volume, body, and definition to any hair type, while still maintaining the overall health and integrity of the hair.
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whats a ring of fire
Answers
fire in a circle
Explanation:
bc
the inital concentration of ractant in a first-order reaction is 0.27m the concentration aftr 1.5s is 8.8 x 10^-2 m what is the half life for this reaction
Answers
0.753 is the half life for this reaction.
For First order reaction.
K = 2·303 log t the inital concentration of in a first-order reaction is 0.27m the concentration 1.5s is 8.8 x 10^-2 m.
where K → rate constant t → time Ao Initial concentration At Concentration after time t
half life period → when half of the reaction is completed x = 9/2 Representing the time taken
for half life of the reaction to be completed by equation becomes,
T1/2 = 2·303 / K log 2
T1/2 = 0.693 / K log 2
0.92 = 0.693 / K
K=0.753
A_{t} = (0.27m)/3109
Concentration of reactant after 1.5 seconds
At = 0.087mel / L
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what is indepent and dependent variables
Answers
Answer:
The independent variable is the cause. Its value is independent of other variables in your study.
The dependent variable is the effect. Its value depends on changes in the independent variable.
Ex: The ice cube melts on the stove.
Dependent variable: Ice Cube
Independent variable: heat of stove
Answer:
In an experiment, the IV(independent variable) is a variable that is changed to see how it affects something else, and the DV (dependent variable)is a variable that is being measured/observed.
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Calculate the standard reaction enthalpy for the reaction below:
3Fe2O3(s) → 2Fe3O4(s) + ½O2(g)
Answers
The standard reaction enthalpy for the given reaction is +235.8 kJ/mol.
What is the standard reaction enthalpy of reaction?The standard reaction enthalpy (ΔH°) for the given reaction is determined as follows:
Equation of reaction: 3 Fe₂O₃ (s) → 2 Fe₃O₄ (s) + ½ O₂ (g)
The standard enthalpy of formation values for Fe₂O₃ (s), Fe₃O₄(s), and O₂(g) is used to calculate the standard reaction enthalpy.
ΔH° = [2 × ΔH°f(Fe₂O₃)] + [½ × ΔH°f(O₂)] - [3 × ΔH°f(Fe₃O₄)]
where;
ΔH°f(Fe₂O₃) = -824.2 kJ/mol
ΔH°f(Fe₃O₄) = -1118.4 kJ/mol
ΔH°f(O₂) = 0 kJ/mol
ΔH° = [2 × (-1118.4 kJ/mol)] + [½ × 0 kJ/mol] - [3 × (-824.2 kJ/mol)]
ΔH° = -2236.8 kJ/mol + 0 kJ/mol + 2472.6 kJ/mol
ΔH° = 235.8 kJ/mol
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The Great Lakes ecosystem has been severely damaged by more than 180 invasive and non-native species. Species such as the zebra mussel, seen here, the quagga mussel, round goby, sea lamprey, and alewife reproduce and spread uncontrollably. It is extremely difficult to control the spread of an invasive species once it is established, which makes prevention the most effective way to deal with organisms that have not yet entered or become established in the Great Lakes.
What is one of the most effective ways to stop invasive animal species from entering the Great Lakes ecosystem?
a
Making an extensive invasive species collection record for the Great Lakes region.
b
Giving presentations to schools throughout the state so students can share this information with their parents.
c
Inspecting entering boats to stop the inflow of invasive species into the Great Lakes.
d
Using effective biocides to kill the invasive species.
Answers
The most effective way to stop invasive animal species from entering the Great Lakes ecosystem is by inspecting entering boats to stop the inflow of invasive species into the Great Lakes. Boats can carry invasive species, such as zebra mussels, quagga mussels, and round gobies, in their ballast water and hulls, and release them into the water when they enter the Great Lakes. The correct option c.
Inspecting entering boats and treating them with biocides if necessary can prevent the introduction of invasive species into the Great Lakes ecosystem. This has been found to be an effective method in controlling the spread of invasive species.
Making an extensive invasive species collection record for the Great Lakes region and giving presentations to schools throughout the state can also be effective in raising awareness about invasive species and their impact on the ecosystem, but prevention through boat inspections is the most practical and direct method of controlling the spread of invasive species. It is important to note that once an invasive species is established in the Great Lakes ecosystem, it is extremely difficult to control its spread, which makes prevention the most effective way to deal with invasive species.
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Drag and drop the words that accurately complete the chart below. Example a lion and a cheetah mistletoe on a tree a coyote eating a rabbit a remora and a shark clownfish and anemone parasitism friendship competition Type of Symbiosis mutualism 1:10 predation relationship commensalism collaboration alliance
Answers
Answer:
Lion and cheetah - Competition
Mistletoe on a tree - Parasitism
Coyote eating rabbit- Predatation
Remora and Shark - Mutualism
Clownfish and Anemone - Relationship
Explanation:
Substances, such as litmus paper or red cabbage juice, that turn color based on the pH of the solution are called ___.
solutes
solutions
indicators
solvents
Answers
Answer:
soluteswws
Explanation:
How can these predictable winds, which scientists call "prevailing winds", help us predict whether a place will get precipitation?
Answers
Answer:
The direction of prevailing winds determines which type of air mass generally moves over an area. For illustration, a west wind might bring warm wettish air from over an ocean. An east wind might bring cold dry air from over a mountain range. Which wind prevails has a big effect on the climate
Prevailing winds are the result of atmospheric rotation cells. They impact the climate of a region.
Rising and sinking air can impact the rush of a region.
Atmospheric rotation cells produce the general climate of a region.
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Is cough syrup compound or a mixture?
Answers
Answer:
Compound
Explanation:
Consisting mostly of sugar dissolved in water (corn syrup), and having the same concentration of solute throughout, it would be classified as homogeneous. Are compounds heterogeneous or homogeneous?
Cough syrup is a mixture as more than one compound is used in it. It is a homogenous mixture.
What is a mixture?A mixture is a material made up of two or more different chemical substances which are not chemically bonded. A mixture is the physical combination of two or more substances in which the identities are retained and are mixed in the form of solutions, suspensions and colloids.
A mixture can be homogenous mixture or heterogenous mixture. Homogenous mixture is a mixture in which there are more that one components but we can't distinghuish them with our eye whereas heterogenous mixture is a mixture in which there are more that one components and we can distinghuish them with our eye.
Traditional cough mixtures are formulated around a syrup at 60 - 75% concentration which is made from sucrose, maltodextrin, glucose, invert syrup, etc. The remainder is made up of thickening agents, stabilizers and active ingredients.
Therefore, Cough syrup is a mixture as more than one compound is used in it. It is a homogenous mixture.
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The chronosequence of soil age across the Hawaiian Islands shows which of the following patterns of nutrient change?
A. nitrogen and phosphorus increase continuously
B. botth nitrogen and phosphorus start high then decrease
C. nitrogen increases to a peak, then declines, while weatherable phosphorus declines to low levels fairly quickly (in geological terms)
D. phosphorus increases continuously but nitrogen reaches a peak and then declines
Answers
The chronosequence of soil age across the Hawaiian Islands shows of the following patterns of nutrient change: Nitrogen increases to a peak, then declines, while weatherable phosphorus declines to low levels fairly quickly (in geological terms). The correct option is C.
The chronosequence of soil age across the Hawaiian Islands shows a pattern of nutrient change where nitrogen (N) increases to a peak and then declines, while weatherable phosphorus (P) declines to low levels fairly quickly. This pattern is observed over geological timescales.
Initially, in young volcanic soils, there is a low presence of weatherable phosphorus, which refers to the easily accessible form of phosphorus. As the soil ages and undergoes weathering processes, weatherable phosphorus declines to low levels. This decline occurs due to the leaching and transformation of phosphorus compounds in the soil.
On the other hand, nitrogen availability increases with soil development. As organic matter accumulates and nitrogen-fixing organisms colonize the soil, nitrogen content rises. However, over time, nitrogen can be lost through leaching or denitrification, leading to a decline in nitrogen levels after reaching a peak.
Therefore, the chronosequence of soil age across the Hawaiian Islands demonstrates a pattern where nitrogen increases to a peak and then declines, while weatherable phosphorus declines to low levels fairly quickly.
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Which planet could support human life
Answers
Answer:
D
Explanation:
It states that D has oxygen, and is closer to the Sun.
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Answer:
I am pretty sure it is B
Explanation:
The others would either burn u like a crispy chicken nugget or freeze you like a popsicle
the third law of thermodynamics describes the entropy of a: select the correct answer below: solid liquid gas all of the above
Answers
The third law of thermodynamics describes the entropy of a: solid.
The third law of thermodynamics states that the entropy of a pure crystalline substance approaches zero as the temperature approaches absolute zero (0 Kelvin or -273.15 degrees Celsius). This law implies that at absolute zero, a perfectly ordered and pure crystalline solid will have zero entropy.
The third law of thermodynamics is not specific to liquids or gases but applies to solids. In a solid, the molecules are highly ordered and have fixed positions in a regular lattice structure. As the temperature decreases towards absolute zero, the thermal motion of the molecules reduces, and the system becomes more ordered, resulting in a decrease in entropy.
In contrast, liquids and gases have higher entropy compared to solids at absolute zero because their molecules have more freedom of movement and are not as tightly arranged. Therefore, the third law of thermodynamics specifically addresses the entropy of solids and does not apply to liquids or gases.
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1. What makes a "fluorescent" highlighter marker so bright?
2. How does plasma make a campfire flame orange?
3. Why are crystals rare?
Answers
Answer:
1. What makes a "fluorescent" highlighter marker so bright?
When light of a certain wavelength is directed at the molecule's chromophore, a photon is absorbed and excites an electron to a higher energy state. Fluorescent highlighter ink is unusually bright because it converts some of the incident ultraviolet light that is invisible to humans into visible light.
2. How does plasma make a campfire flame orange?
The de-excitation of plasma (charged gas) is not the source of the light given off by a campfire's flame. The incandescence of solid soot particles billowing up on an updraft of hot air is what creates the light seen as a flame.
3. Why are crystals rare?
The answer is twofold: erosion and mixed composition. Wind, rain, and water flow have a way of knocking and mixing around things here on earth
Answer:
1: When light of a certain wavelength is directed at the molecule's chromophore, a photon is absorbed and excites an electron to a higher energy state. Fluorescent highlighter ink is unusually bright because it converts some of the incident ultraviolet light that is invisible to humans into visible light.
2: The de-excitation of plasma (charged gas) is not the source of the light given off by a campfire's flame. The incandescence of solid soot particles billowing up on an updraft of hot air is what creates the light seen as a flame.
3: erosion and mixed composition. Wind, rain, and water flow have a way of knocking and mixing around things here on earth. This erosion causes big crystals such as a palm-sized amethyst to get knocked apart into little crystals.
The frequency of a wave is 2.8 x 10^3 Hertz. What is the wavelength of these gamma rays?
Show all work!
Answers
The frequency of a wave 2.8 x 10³ Hertz is then the wavelength of these gamma rays is 107 nm
Wavelength is the the distance between two successive crests or troughs of a wave
Here given data is
Frequency = 2.8 x 10³ Hertz
Velocity of gamma rays = 3×10⁸m/s
We have to calculate wavelength of these gamma rays?
So, wavelength = velocity/frequency
λ = v/f
λ = 3×10⁸m/s/2.8 x 10³ Hertz
λ = 107 nm
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A titration of 200.0 mL of 1.00 M H2A was done with 1.38 M NaOH. For the diprotic acid H2A, Ka1 = 2.5 10–5, Ka2 = 3.1 10–9. Calculate the pH after 100.0 mL of 1.38 M NaOH have been added.
Answers
Answer:
4.95
Explanation:
1.00 M H2A
1.38 m NaOH
Titration = 200.0 mL
Calculate moles of NaOH
= \(\frac{100*1.38}{300}\) = 0.46
calculate moles of H2A
= \(\frac{200 * 1.0}{300}\) = 0.667
therefore the moles of acid left = moles of H2A - moles of NaOH
= 0.667 - 0.46 = 0.207
pka = - log( ka )
= - log ( 2.5 * 10^-5 ) = 4.61
calculate PH after 100 ml of 1.38 M NaOH have been added
PH = pka + log \((\frac{salt}{acid} )\)
= 4.61 + log \((\frac{0.46}{0.207} )\) = 4.95
would the volume of oxygen that is generated by affected if a smaller mass of yeast were used? why or why not?
Answers
Yes, the volume of oxygen that is generated would be affected if a smaller mass of yeast were used. This is because the amount of oxygen generated is directly proportional to the amount of yeast present.
Amount of oxygen generated ∝ Amount of yeast present
When less yeast is used, there will be less oxygen generated as there are fewer cells respiring and producing energy.
The amount of yeast present directly impacts the rate of cellular respiration, which is the process responsible for generating oxygen. With less yeast available, there are fewer cells participating in cellular respiration, leading to lower overall production of oxygen.
Therefore, the volume of oxygen generated will decrease as the mass of yeast used decreases.
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Which element is most similar to fluorine in the way it reacts with other elements?
Answers
Answer:
The answer is chlorine
Explanation:
what information does gibbs free energy give about a reaction?
Answers
Answer:
In a practical and frequently used form of Gibbs free energy change equation, ΔG is calculated from a set values that can be measured by scientists: the enthalpy and entropy changes of a reaction, together with the temperature at which the reaction takes place.
Explanation:
Gallium is a metallic element in Group III. It has similar properties to aluminium.
(a) (i) Describe the structure and bonding in a metallic element.
Answers
Metallic elements exist in a solid-state and they are opaque, have a shiny surface, good conductors of electricity and heat, malleable and ductile, and are dense. The structure of metals is formed by atoms that are held together by metallic bonds. These atoms have loosely bound valence electrons that can be shared between the neighboring atoms.
Therefore, the outermost shells of these atoms are incomplete due to the sharing of valence electrons, forming a lattice structure known as a metallic bond.Metallic elements have a unique crystal structure that occurs in two forms. The most common type of metal crystal structure is the body-centered cubic structure where the atoms are arranged in a cube with one atom located at the center of the cube. The other type of metal crystal structure is the face-centered cubic structure, where each corner of the cube is an atom and there is an additional atom at the center of each face of the cube .Metallic bonding occurs due to the delocalized electrons that exist in the metal structure. The valence electrons from each atom are free to move throughout the entire metal lattice. Therefore, these electrons form a "sea of electrons" that is shared by all the atoms in the lattice. This results in the metal structure having high thermal and electrical conductivity.Metals are known for their ductility and malleability properties. These properties are due to the metallic bonding that exists in the metal structure. Since the valence electrons are shared, they can easily move past one another, allowing the metal to be hammered into different shapes without breaking.The properties of metals vary depending on their structure and bonding. Gallium, being a metallic element in Group III, has similar properties to aluminum. Therefore, it has a similar metallic bond structure with delocalized electrons that provide the metal with its unique properties.For such more question on valence electrons
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The molar mass of aluminum oxide (Al2O3) is 102.0 g/mol. What is the correct way to write the inverted molar mass of aluminum oxide as a conversion factor?
StartFraction 102.0 grams upper A l subscript 2 upper O subscript 3 over 1 mole upper A l subscript 2 upper O subscript 3 EndFraction.
StartFraction 1 mole upper A l subscript 2 upper O subscript 3 over 102.0 grams upper A l subscript 2 upper O subscript 3 EndFraction.
StartFraction 1 mole upper A l subscript 2 upper O subscript 3 over 1 gram upper A l subscript 2 upper O subscript 3 EndFraction.
StartFraction 102.0 moles upper A l subscript 2 upper O subscript 3 over 102.0 grams upper A l subscript 2 upper O subscript 3 EndFraction.
Answers
The correct way to write the inverted molar mass of aluminum oxide (Al2O3) as a conversion factor is: Start Fraction 1 mole upper A l subscript 2 upper O subscript 3 over 102.0 grams upper A l subscript 2 upper O subscript 3 EndFraction.
The inverted molar mass of a substance is obtained by taking the reciprocal of its molar mass. In this case, the molar mass of aluminum oxide is given as 102.0 g/mol. To write the inverted molar mass as a conversion factor, we place 1 mole of Al2O3 in the numerator and the molar mass of Al2O3 (102.0 grams) in the denominator. This conversion factor allows us to convert between the number of moles and the mass of Al2O3.
In more detail, the conversion factor can be expressed as follows:
1 mole Al2O3 / 102.0 grams Al2O3
This means that for every 102.0 grams of aluminum oxide, there is 1 mole of aluminum oxide. Conversely, if we have a given mass of Al2O3, we can use this conversion factor to determine the corresponding number of moles, or vice versa. The conversion factor allows us to convert between the mass and the molar quantity of aluminum oxide, enabling us to perform calculations involving moles and grams of the substance.
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6. (10 Points) The volume of a helium balloon in Los Angeles is 14.0 L The
temperature in Los Angeles is 25°C. Find the volume of the balloon in
Death Values where the temperature is 52°C, with the pressure being the
same in both places.
PLS HURRY
Answers
Answer:
V₂ = 15.27 L
Explanation:
Given data:
Initial volume = 14.0 L
Initial temperature = 25°C (25 + 273.15 = 298.15 k)
Final temperature = 52°C = (52+273.15 = 325.15 k)
Final volume = ?
Solution:
Charles Law:
" The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure "
Mathematical expression:
V₁/T₁ = V₂/T₂
V₁ = Initial volume
T₁ = Initial temperature
V₂ = Final volume
T₂ = Final temperature
Now we will put the values in formula.
V₁/T₁ = V₂/T₂
V₂ = V₁T₂/T₁
V₂ = 14.0 L × 325.15 K / 298.15 k
V₂ = 4552.1 L.K / 298.15 K
V₂ = 15.27 L
What is a trade-off?
Don't mind the highlighted yellow circle
Answers
Answer:
a new scientific discovery that benefits the environment
E. How much 0₂ (in liters) needs to be generated for a 12-day mission if each astronaut consumes 0.91 kg of O₂ per day?
Answers
Depending on the number of astronauts, the amount of oxygen gas that needs to be generated for a 12-day mission would be the calculated volume (e.g., 7638 liters for one astronaut) multiplied by the number of astronauts.
To determine the amount of oxygen (O2) that needs to be generated for a 12-day mission, considering each astronaut consumes 0.91 kg of O2 per day, we can follow these steps:
Calculate the total oxygen consumption per astronaut for the entire mission:
Oxygen consumption per day per astronaut = 0.91 kg
Total oxygen consumption per astronaut for 12 days = (0.91 kg/day) * 12 days = 10.92 kg
Convert the mass of oxygen consumed to moles:
To convert from mass (kg) to moles, we need to use the molar mass of oxygen (O2), which is approximately 32 g/mol.
Moles of oxygen consumed per astronaut for 12 days = (10.92 kg) / (32 g/mol) = 341.25 mol
Use the ideal gas law to calculate the volume of oxygen gas (O2) at standard temperature and pressure (STP):
At STP, 1 mole of any gas occupies 22.4 liters.
Volume of oxygen gas per astronaut for 12 days = (341.25 mol) * (22.4 L/mol) = 7638 liters
Determine the total volume of oxygen gas needed for the entire mission:
If we assume there is only one astronaut, then the total volume of oxygen gas needed for the 12-day mission would also be 7638 liters.
However, if there are multiple astronauts, we need to multiply the volume by the number of astronauts. For example, if there are two astronauts:
Total volume of oxygen gas needed for the 12-day mission (with 2 astronauts) = 7638 liters * 2 = 15,276 liters.
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what is the concentration of lithium ions in 0.450 m li₂so₄?
Answers
The concentration of lithium ions (Li+) in a 0.450 M Li₂SO₄ solution is also 0.450 M. The concentration of lithium ions is equal to the molar concentration of the lithium sulfate solution.
In a 0.450 M Li₂SO₄ solution, the subscript 2 in Li₂SO₄ indicates that there are two moles of lithium ions for every mole of lithium sulfate. Therefore, the molar concentration of lithium ions is equal to the molar concentration of the lithium sulfate solution.
Since the given solution is 0.450 M Li₂SO₄, the concentration of lithium ions is also 0.450 M. This means that for every liter of the solution, there are 0.450 moles of lithium ions present. The concentration of lithium ions remains the same as the concentration of the compound from which it is derived in this case.
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