8. The pressure of the gas in the container is 369.7 mmHg.
9. The new pressure of the gas in atmospheres is 1.47 atm
10. The temperature in Kelvin will 0. 1243 moles of fluorine exert a pressure of 2. 02 atm at a volume of 0. 625 L is 124 K.
The ideal gas equation is expressed as :
P V = n R T
8. The gas law is :
P₁ V₁ = P₂ V₂
P₂ = P₁ V₁ / V₂
P₂ = ( 256.4 × 362 ) / 251
= 369.7 mmHg
9. P₁ V₁ / T₁ = P₂ V₂ / T₂
P₂ = P₁ V₁ T₂ V₂T₁
P₂ = ( 1 × 32.4 × 352) / 28.4 × 273
= 1.47 atm
The pressure is 1.47 atm
10. P V = n R T
T = P V / n R
T = ( 2.02 × 625 ) / 0.1243 × 0.082
T = 124 K
Thus, the temperature is 124 K.
To learn more about ideal gas equation here
https://brainly.com/question/28837405
#SPJ4
Match the human activity with how it intensifies the greenhouse effect deforestation burning fossil fuels primary cause of human-created carbon emissions destroys natural carbon sinks leading to more CO₂ in the air emits methane from decomposing waste disposal in lands
Deforestation - destroys natural carbon sinks leading to more CO₂ in the air
Burning fossil fuels - primary cause of human-created carbon emissions
Waste disposal in landfills - emits methane from decomposing waste disposal in lands
Greenhouse effectsGreenhouse effects refer to the effects caused by the greenhouse gases' absorption of solar radiation to raise the temperature of the atmosphere. The greenhouse gases include carbon dioxide, methane, water vapor, etc.
Deforestation destroys forests which serve as carbon dioxide sinks. The burning of fossil fuels leads to the emission of carbon dioxide and waste disposal in landfills is a source of methane gas. All these gases help create the greenhouse effect.
More on greenhouse effects can be found here: https://brainly.com/question/13706708
#SPJ1
Match the human activity with how it intensifies the greenhouse effect.
deforestation
burning fossil fuels
waste disposal in landfills
primary cause of human-created
carbon emissions
destroys natural carbon sinks,
leading to more co, in the air
emits methane from decomposing
matter
Currents in Earth’s mantle are caused by the constant movement of semi-liquid material between areas with high temperatures near the core and areas with cooler temperatures near Earth’s surface. Use your model from this activity to explain how heat is transferred on a larger scale through such currents
When the semi-liquid material near the core is heated at high temperatures, it becomes less dense and rises. As it rises, it cools and becomes more dense, eventually sinking back down towards the core.
Heat is transferred through the currents in Earth's mantle due to a process known as convection. In this process, heat is transferred by the movement of a fluid. In the mantle, the semi-liquid material acts as a fluid, which constantly moves from areas with high temperatures near the core to areas with cooler temperatures near Earth's surface.
This constant movement of semi-liquid material, which is driven by the differences in temperature helps to distribute heat evenly throughout the mantle also, it prevents any localized hotspots from developing.
Thus, the convection currents in the mantle play a critical role in controlling the transfer of heat within the earth and helps to regulate the overall thermal energy balance of the planet earth.
To know more about earth's mantle here
https://brainly.com/question/30611692
#SPJ4
if a solution containing 65.21 g of mercury(ii) nitrate is allowed to react completely with a solution containing 9.718 g of sodium sulfide, how many grams of solid precipitate will form?
A solid precipitate of 27.84 g of HgS is formed.
First, write down a properly balanced equation for the reaction taking place.
Hg(NO3)2(aq) + Na2S(aq) ==> HgS(s) + 2NaNO3(aq) ... equilibrium equation
Then find out which reactant is limiting.
Mol Hg(NO3)2 present 65.21 g x 1 mol/324.60 g = 0.200 mol
Moles of Na2S present = 9.718 g x 1 mol/78.045 g = 0.12 mol
Since they react with 1:
At 1 molar ratio, Na2S is clearly limiting and determines the amount of HgS formed.
Grams of HgS precipitate formed = 0.12 mol Na2S x 1 mol HgS/mol Na2S x 232.66 g/mol = 27.84 g HgS
Learn more about precipitate
brainly.com/question/29762381
#SPJ4
26. Synthesize Why does examining population size,
density, and distribution together give you a bet-
ter understanding of a population than looking at
these characteristics separately?
Examining population size, density, and distribution together give you a better understanding of a population than looking at these characteristics separately because these variables play a role in how the ecosystem adjusts to the growing population.
What is population density, and how does it work?
The average population size per unit of area or volume is known as population density. A colony of 100 insects, for instance, has a density of 1 insect per square meter and occupies an area of 100 square meters.
Numerous creatures' location, development, and migration can all be described using population density. The share of residents by different regions of a country is known as the national population distribution. The quantity of people within a broadly defined geographic area is referred to as the population size.
To learn more about ecosystem use link below:
https://brainly.com/question/1514975
#SPJ1
How to calculate burette reading table
Answer:
The purpose of burette reading is to tell you how much solution has been dispensed, instead of telling you how much the burette contains. Unlike other volumetric glassware, the zero scale on a burette is written on top. Measurement scale on the burette is at 0.10 intervals. All burette readings are given to an accuracy of 0.05 mL.
Make sure your eye is at the same level of the meniscus to avoid an error. For water and most liquids, the meniscus is concave or like a U shape. Read the center of the meniscus or the bottom of the U-shape.
A zoomed-in section of the burette between 20.5 milliliters and 18.5 milliliters shows the level of the solution in the burette. There is a concave meniscus at the surface of the solution. There are 3 eyes on the right side of the burette looking at the level of the solution from above, at, and below the meniscus. The eye above the meniscus reads the solution level to be at 19.42 milliliters. The eye at the same level as the meniscus reads the level of the solution to be 19.5 milliliters. The eye below the meniscus reads the level of the solution to be 19.62 milliliters. The correct measurement of the solution level is 19.5 millimeters.
Figure: How to read the meniscus. The correct reading is 19.50 mL. Due to parallax error, the reading can be 19.62 mL or 19.42 mL.
The first and final reading of the burette should be recorded. The difference between the first and final reading is called the titer.
Readings should be recorded to the nearest 0.05 mL. Examples of readings: 22.05, 23.00, and 23.05 mL.
Can I get Brainliest?
Explanation:
Another rock is determined to be 5 half-lives old. If the rock has a total mass of 16 grams, how many grams are stable product?
please explain :) i will give brainliest
Answer:
Explanation:
If a rock is 5 half-lives old, it means that the fraction of the original radioactive material remaining is (1/2)^5 = 1/32. This also means that the fraction of stable product in the rock is 1 - 1/32 = 31/32.
If the total mass of the rock is 16 grams, we can calculate the mass of the stable product as follows:
mass of stable product = (31/32) * 16 grams
= 15.5 grams
Therefore, the mass of stable product in the rock is 15.5 grams.
Note: Vol. = volume. Since the bolt has an irregular shape, find its volume by displacement only.
1. Calculate the volumes of the samples used in Procedure step 2. Record the calculated
volumes in Table 2. 2. Why could we not find the volume of the bolt by this method?
2. How did you find the volume of the PE rod using the displacement method?
Note: 1 cm = 1 mL.
Because PE floats, push the rod under the water with a very small object, such as a
pin, and volume of the pin is negligible and can be ignored.
The displacement method is the sole way to determine the iron bolt's volume. Aluminium bar volume is 15.52 cm3. The rod's volume is 23.8 cm3.
Describe loudness. The area occupied by an object is referred to as its volume. We are aware that based on the object's characteristics, there are various approaches to determine its volume. If the object is solid, we have two options: we can look at the solid's dimensions or we can use the solid's dimensions. The actual technique we choose to employ is unique to the object whose volume we want to measure. in order to determine the aluminium bar's volume; Volume equals length, width, and height. Volume is equal to 9.7 * 1.6 * 1.0, or 15.52 cm3. in order to determine the rod's volume; Volume equals Area * Length.
Learn more about Volume here:
https://brainly.com/question/28694532
#SPJ4
Show your work for the following problems. 3. A gas at a fixed temperature has a volume of 3. 41L. Its pressure is changed from 4. 22atm to 1. 202atm. What is the new volume at constant temperature?
By the Help of Ideal gas laws, The new volume of the gas at a constant temperature when the pressure is changed from 4.22 atm to 1.202 atm is 12.94 L.
The Ideal Gas Law, PV = nRT, which takes P as the pressure, V as the volume, n as the number of moles, R as the gas constant, and T as the temperature, can be used to explain the relationship between pressure, volume, and temperature. If we keep the temperature constant, we can rearrange the equation to solve for the new volume:V1 = (P1 × V2) / P2, where V1 is the new volume and P1 and P2 are the initial and final pressures, respectively. Plugging in the values from the problem, we get:V1 = (4.22 atm × V2) / 1.202 atm = 3.41 L × (4.22 atm / 1.202 atm) = 12.94 LSo the new volume of the gas at a constant temperature when the pressure is changed from 4.22 atm to 1.202 atm is 12.94 L.
Learn more about Ideal gas:
brainly.com/question/28257995
#SPJ4
The greater the speed of gas particles in a container, the:_________
The greater the speed of gas particles in a container, the higher the pressure of the gas.
This is because the pressure is directly proportional to the kinetic energy of the gas particles, and the kinetic energy of a gas particle is directly proportional to its speed squared. The pressure of a gas is usually expressed as a force per unit area, and can be calculated by multiplying the average kinetic energy of the gas particles by the number of particles per unit volume. Since the kinetic energy of a particle is proportional to the square of its velocity, if we double the velocity of the gas particles, we will see an increase in the average kinetic energy and thus an increase in the pressure. Thus, the greater the speed of gas particles in a container, the higher the pressure of the gas.
Learn more about gas here:
https://brainly.com/question/3637358
#SPJ4
a chemist employed by an airplane manufacturer investigates new adhesives for the purpose of building airplanes without rivets. she is engaged in group of answer choices risk-benefit analysis. alchemy. applied research. basic research.
A chemist employed by an airplane manufacturer investigates new adhesives for the purpose of building airplanes without rivets. So, she is engaged in applied research.
Research means findings and discoveries. A researcher can carry out either basic research or applied research. Every research topic begins with an explanation of the aim of the investigation, which describes identifying the research method or the strategy used to carry out the research.
Applied research is a non-systematic approach to solving certain difficulties or problems . These concerns or problems may affect a person, a group, or the entire society. It is referred to as "non-systematic" because it directly aim at seeking solutions.
It makes use of the existing scientific instruments to identify solutions. So, it is frequently referred to as a "scientific process".
The three different categories in research are as follows: Action research, Research and Development and evaluation research.
To know more about research here
https://brainly.com/question/30353052
#SPJ4
can someone tell me if I answered this question correctly
Answer:
Yeah you are right great job
Andrea's ballpoint pen leak ink, a permanent onto her white blouse. Her friends suggested that she soaked the stain in nail polish remover, in rubbing alcohol or wash the stain in soap or water. Andrea asked you, a good science student which of these suggestions she should try. Plan and design an experiment to identify which solvent is best for removing ink stain from Andrea's blouse
The most effective in removing ink stains from a white blouse by comparing the degree to which each solvent is able to remove the stain. The solvent that results in the least visible ink stain will be considered the most effective.
A solvent in chemistry is a liquid that is used to dissolve a solute (another substance) to form a solution. The solvent acts as the medium in which the solute is dissolved, allowing it to be dispersed evenly throughout the solution. The choice of solvent can greatly impact the solubility, reactivity, and overall properties of the solution.
There are many types of solvents, including polar and non-polar solvents. Polar solvents have a positive and negative end and are able to dissolve polar compounds. An example of a polar solvent is water. Non-polar solvents, on the other hand, do not have a polar structure and are able to dissolve non-polar compounds. An example of a non-polar solvent is hexane.
To learn more about Solvent visit here:
brainly.com/question/14797683
#SPJ4
Au+HCL(aq) Complete the chemical Equation
The complete balanced chemical equation is:
2[tex]Au[/tex] + 6[tex]HCl[/tex] (aq) → 2[tex]Au[/tex][tex]Cl_{3}[/tex] (aq) + 3[tex]H_{2}[/tex] (g)
What is a chemical equation?Chemical equations provide the reactants, products, and mole ratios of each component involved in the reaction and are a symbolic depiction of a chemical reaction. The reactants are written on the left side of the arrow, while the products are written on the right side, using chemical symbols and formulas. The coefficients in front of the formulas show the number of molecules involved and the arrow shows the reaction's direction. Chemical equations serve to explain the underlying chemical processes and forecast the volume of products that will be created in a reaction. They are a crucial tool in the study of chemistry and are essential to chemical reactions and their uses in a variety of sectors.
To know more about chemical equations, check out:
https://brainly.com/question/5880605
#SPJ1
Beth and Charlie did an experiment with plants. For this experiment, they got two plants that were the same kind, that had the same kind of soil, and that were the same size. Then, they left both plants next to the window and gave both plants the same amount of water every day. They covered one plant with a cardboard box and left the other plant uncovered.
They covered one plant with a cardboard box and left the other plant uncovered. The uncovered plant will grow and covered will not grow.
What is experiment?The experiment is the cornerstone of the scientific process, which is a methodical approach to learning about the world around you. Although some experiments are conducted in laboratories, an experiment can be conducted anywhere, at any time.
Beth and Charlie did an experiment with plants. For this experiment, they got two plants that were the same kind, that had the same kind of soil, and that were the same size. Then, they left both plants next to the window and gave both plants the same amount of water every day. They covered one plant with a cardboard box and left the other plant uncovered. The uncovered plant will grow and covered will not grow.
Therefore, the uncovered plant will grow and covered will not grow.
To know more about experiment, here:
https://brainly.com/question/11256472
#SPJ1
explain what causes the unique colored lines and colored flames that we observe from various elements
For the balanced chemical reaction below:
P4O10(g) + 6 H2O(l) —> 4 H3PO4(aq)
(a) Calculate the moles of H3PO4 if there are 6.46 grams of water.
40
(b) Calculate the grams of H3PO4 if there are 0.730 moles of water.
(c) Calculate the grams of tetraphosphorus decoxide if there are 4.78 grams of water.
40
(d) Calculate the moles of H3PO4 if there are 0.898 moles of tetraphosphorus decoxide.
a. The moles of H3PO4 would be 0.24 mol
b. The grams of H3PO4 would be 48.02 grams
c. The grams of tetraphosphorus decoxide would be 14.2 grams
d. The moles of H3PO4 would be 3.59 mol
Stoichiometric problemThe balanced equation of the reaction is as follows:
[tex]P_4O_{10}(g) + 6 H_2O(l) -- > 4 H_3PO_4(aq)[/tex]
The mole ratio of water and H3PO4 = 3:2
Mole of 6.46 grams of water = 6.46/18 = 0.36 mol
Equivalent mole of H3PO4 = 2/3 x 0.36 = 0.24 mol
With 0.730 moles of water, the equivalent mole of H3PP4 will be: 2/3 x 0.730 = 0.49 moles
Mass of 0.49 mol H3PO4 = 0.49 x 98 = 48.02 grams
Mole ratio of tetra phosphorus decoxide and water = 1:6
Mole of 4.78 grams of water = 4.78/18 = 0.27 mol
Equivalent mole of tetra phosphorus decoxide = 0.27/6 = 0.05 mol
Mass of 0.05 mol tetra phosphorus decoxide = 0.05 x284 = 14.2 grams
Mole ratio of tetraphosphorus decoxide and H3PO4 = 1:4
Mole of tetraphosphorus decoxide = 0.898
Equivalent mole of H3PO4 = 0.898 x 4 = 3.59 mol
More on stoichiometric problems can be found here: https://brainly.com/question/14301905
#SPJ1
fluorescent objects absorb light and emit it again at a lower frequency of energy explain why the emitted frequency has to be lower
The emitted fluorescent light has longer wavelength and lower energy because it lost some energy to the solvent molecules and some fraction of energy is dissipated as heat.
What is fluorescence ?A material that has absorbed light or other electromagnetic radiation will emit light when it undergoes fluorescence. It has a luminescent quality. Most of the time, the emitted light has a lower photon energy than the absorbed radiation because it has a longer wavelength.
Fluorescence can be seen when the emitted light is in the visible spectrum while the absorbed radiation is in the ultraviolet (UV) region of the electromagnetic spectrum, which is invisible to the human eye.
The fluorescent photons have lower energy. The non-radiative vibrational transitions taking place in between causes dissipation of energy as heat and some energy is transferred to the solvent molecules.
Find more on fluorescence :
https://brainly.com/question/14892301
#SPJ1
______contains digestive enzymes to break down harmful substances.
Liver contains digestive enzymes to break down harmful substances.
Digestive enzymes: Digestive enzymes are a group of enzymes which break down polymeric macromolecules into their smaller building blocks, in order to facilitate their absorption into the cells of the body.
Digestive enzymes are found in the digestive tracts of animals (including humans) as well as in the tracts of carnivorous plants, where they aid in the digestion of food, as well as inside the cells, especially in their lysosomes, where they function to maintain the cellular survival.
Liver: The liver contains various digestive enzymes, such as liver alcohol dehydrogenase, which helps to break down toxic substances such as alcohol and drugs, and convert them into less harmful substances that can be excreted from the body.
To know more about Digestive enzymes here
https://brainly.com/question/30312574
#SPJ4
For the reaction HCl + NaOH ® NaCl + H2O, how many moles of hydrochloric acid are required to produce 180. g of water?
The molar mass of HCl is 36.46 g/mol, and the molar mass of H₂O is 18.02 g/mol.
What is molar mass?
Molar mass is a physical property of a substance, defined as the mass of a given substance divided by its amount of substance in moles. It is usually expressed in units of grams per mole (g/mol). Molar mass is used to calculate the mass of a particular substance from its molar quantity, or to calculate the quantity of a particular substance from its mass.
In order to calculate the number of moles of HCl required to produce 180. g of water, we must first calculate the number of moles of H2O that are produced. Since the molar mass of H₂O is 18.02 g/mol, we can divide 180. g by 18.02 to get the number of moles produced:
180. g / 18.02 g/mol = 10.00 moles of H₂O
Now, since the reaction is 1:1 (1 mole of HCl for 1 mole of H₂O), we can simply multiply the number of moles of H₂O produced (10.00 moles) by 1 to get the number of moles of HCl required:
10.00 moles H₂O × 1 mole HCl/1 mole H₂O = 10.00 moles HCl
Therefore, in order to produce 180. g of water, 10.00 moles of HCl are required.
To learn more about molar mass
https://brainly.com/question/30459969
#SPJ4
How do colliding air masses create a front?
When two different air masses collide, their difference in temperature, humidity, and air pressure can create a boundary between them, called a front.
What is an air front?When two different air masses collide, their difference in temperature, humidity, and air pressure can create a boundary between them, called a front.
This boundary separates the two air masses and often results in significant weather changes, such as precipitation and strong winds, as the denser, cooler air mass displaces the lighter, warmer air mass.
The passage of a front can bring about changes in the weather, as the leading edge of the cooler and denser air replaces the warmer air. The type of front can be characterized by its movement and the temperature changes it brings, and they are classified into four main types:
cold frontwarm frontstationary frontoccluded front.Learn more on air fronts here https://brainly.com/question/508529
#SPJ1
How is transport of water a way to preserve the water supply on Earth? Do you consider this a solution?
All the living organisms need water to survive in the earth. The transport of water can be considered as a solution of water supply on earth. Most of the people suffers from water scarcity.
How can we preserve water?Water is regarded as the universal solvent and plays an important role in the survival of all living organisms. The preservation of water mainly refers to protect and control the use of water and its associated resources.
It is very important to preserve water. Because everyday the population is increasing and the water resources are reducing. The preservation of water helps us to supply large amount of water for longer usage.
Some methods to preserve water are:
Close the tap when it is not in use.Check the leakage of water through pipesCollect and save rainwaterDo not waste too much water for bathing, washing, cleaning etc.Water supply means providing water to the public. Here water is supplied through pipes, pumps, etc. To make healthy individuals in our society transport of water is essential.
To know more about water, visit;
https://brainly.com/question/23469916
#SPJ1
an unknown compoound is decomposed into 6.9 g of na, 3.1 g of p, and 6.4 of o. what is its empirical formula
The compound's empirical formula is [tex]Na_3P_1O_4[/tex].
We must establish the relative ratios of the components in the compound in order to get the empirical formula for the compound.
The simplest whole-number ratio of the various atoms in a compound is represented by an empirical formula. The molecular formula displays the precise quantity of various atom types present in a compound's molecule.
The masses of Na, P, and O will first be converted to moles:
Na: 6.9g / 23g/mol = 0.3 mol
P: 3.15 g / 31 g / mol = 0.1 mol
O: 6.4g/16g/mol = 0.4 mol
The relative ratios will then be obtained by dividing each value by the smallest value (0.1 mol for P) as follows:
P: 0.1 mol/0.1 mol = 1,
Na: 0.3 mol/0.1 mol = 3,
O: 0.4 mol/0.1 mol = 4.
So the formula is [tex]Na_3P_1O_4[/tex]
To learn more about Empirical formula :
https://brainly.com/question/8676129
#SPJ4
discuss and recognize the formula units that comprise ionic compounds. recognize a polyatomic ion and be able to draw the covalent bonding of polyatomic ions that result in a compound.
A polyatomic ion is a group of atoms that have a net charge and act as a single unit in chemical reactions. Some common examples of polyatomic ions include nitrate (NO3-), carbonate (CO32-), and sulfate (SO42-).
Ionic compounds are composed of positive and negative ions. The positive ions, or cations, are usually composed of metal elements and the negative ions, or anions, are typically composed of non-metal elements. The combination of these ions creates a formula unit, which is a neutral compound that results from the total balance of positive and negative charges.
The formula units in an ionic compound are held together by electrostatic attraction, or the force of attraction between opposite charges. This type of bonding results in a repeating lattice-like structure, with the cations and anions arranged in a specific pattern.
In a covalent bond, electrons are shared between the atoms, rather than being transferred from one atom to another as in an ionic bond. Polyatomic ions can form covalent bonds with other polyatomic ions or with individual atoms to form compounds. For example, the polyatomic ion carbonate (CO32-) can form a covalent bond with a metal cation, such as sodium (Na+), to form sodium carbonate (Na2CO3). The carbonate ion shares its electrons with the sodium ion to form a neutral compound.
learn more about atoms here:
https://brainly.com/question/13654549
#SPJ4
suppose you dissolve 132 g of lead(ii) acetate in 2.20 l of water. what is the molality of the solution? the molar mass of lead(ii) acetate is 325.29 g/mol, and the density of water is 1.000 g/ml.
Dissolve 132 g of lead(ii) acetate in 2.20 l of air. Then the molarity of the solution is 0.184 mol/L
Molarity in the concentration of a solution is known as molar concentration or molarity with its symbol M. Molarity is used to get the concentration of a solution quantitatively.
The mass of lead acetate Pb(C2H3O2)2 = 132 g
We must first find the molarity of lead acetate:
n = mass/Mr
n = 132/325.29
n = 0.405 M
The moles of lead acetate is 0.405 mol
Then the molarity of the solution is
M = n/V
M = 0.405/2.20
M = 0.184 mol/L
Learn more about the molarity at https://brainly.com/question/14469428
#SPJ4
Is a beta sheet a secondary protein structure?
Yes, beta sheet is a secondary protein structure found in proteins.
Beta-Pleated Sheets of Protein is defined as a special type of secondary structure of a protein. Beta-Pleated Sheets consists of different beta strands linked by hydrogen bonds between the adjacent strands. Around three to ten amino acids are combined to create a beta-strand polypeptide.
Generally, a beta-pleated protein sheet is a type of protein secondary structure. Most of the proteins contain both α-helices and β-sheets, but some proteins contain only one type of secondary structure . A beta sheet is that type of secondary structure which describes how the backbone of a protein is arranged in space. Beta-pleated protein sheet consists of at least two beta strands.
Learn more about beta sheet from the link given below.
https://brainly.com/question/14728237
#SPJ4
How are food chains interconnected?
A food chain are interconnected in the sense that it shows a single pathway from the producers to the consumers and the way energy flows in this pathway.
What is food chain?
This refers to a linear sequence of organisms where nutrients and energy is moved from one organism to the other. This occurs when one organism consumes another organism.
The food chain starts with the producer organism, follows the chain and ends with the decomposer organism. m for survival. For example Grass (Producer) —–Goat (Primary Consumer) —– Man (Secondary consumer).
Learn more about food chain on
https://brainly.com/question/1807825
#SPJ1
water is extremely important in living things for all of the following reasons exceptgroup of answer choicesit has high specific heat and resists temperature change.it is a good solvent; most things dissolve in it.it is an excellent buffer.it has high heat of vaporization and low density of ice.
Water is not a suitable buffer because there is not enough acid or base in the given amount of water that is produced when another acid or base is added. So the answer is c.
Water is not a suitable buffer because there is not enough acid or base in the given amount of water that is produced when another acid or base is added. Water has unique chemical properties in all three states: solid, liquid, and gas, thanks to the ability of its molecules to form hydrogen bonds with each other. From humans to bacteria, living organisms have a high water content, so understanding the unique chemistry in his three states of water is key to biology.
Learn more about Buffer
brainly.com/question/10695579
#SPJ4
What are all possible values of the magnetic quantum number m1 for a 3s electron?
you heat 3.854 g of a mixture of fe3o4 and feo to form 4.148 g fe2o3. the mass percent of feo originally in the mixture was:
To determine the mass percent of FeO in the original mixture, we need to balance the equation for the reaction that takes place when the mixture is heated. The reaction between Fe3O4 and FeO to form Fe2O3 is as follows:
Fe3O4 + FeO --> Fe2O3
Next, we'll use the law of conservation of mass to balance the equation. According to this law, the total mass of the reactants must equal the total mass of the products.
We'll start by assuming that the number of moles of FeO in the mixture is 1.0. Then, the number of moles of Fe3O4 can be calculated as follows:
4.148 g Fe2O3 / (71.844 g/mol) = 0.058 mol Fe2O3
0.058 mol Fe2O3 / (1 mol FeO / 2 mol Fe2O3) = 0.116 mol FeO
0.116 mol FeO x (55.845 g/mol) = 6.468 g FeO
So, the mass of FeO in the original mixture was 6.468 g and the mass of Fe3O4 was 3.854 g - 6.468 g = -2.614 g.
The mass percent of FeO in the original mixture can be calculated as follows:
(6.468 g FeO / (6.468 g FeO - 2.614 g Fe3O4)) x 100% = 71.12%
So, the mass percent of FeO in the original mixture was 71.12%.
To know more about law of conservation of mass, visit the link given below:
https://brainly.com/question/2890660
#SPJ4
what molecules produced in the light reaction provide energy for these reactions? (rubp, co2, 3-phosphoglycerate, glyceraldehydes-3-phosphate (g3p))
The Calvin cycle is a series of reactions that take place in the stroma of chloroplasts in photosynthetic cells, and it is responsible for converting carbon dioxide (CO2) into sugars. The cycle consists of three phases: fixation, reduction, and regeneration.
In the fixation phase, CO2 is added to ribulose-1,5-bisphosphate (RuBP) to form a six-carbon intermediate.
In the reduction phase, the six-carbon intermediate is then reduced to two molecules of glyceraldehyde-3-phosphate (G3P). This process requires energy, which is provided by ATP and NADPH, the high-energy molecules produced in the light reactions.
In the regeneration phase, the two G3P molecules are converted back into RuBP, completing the cycle. This allows the Calvin cycle to continue, and the sugars produced can be used for energy and to build more complex compounds.
In summary, the Calvin cycle converts CO2 into sugars through a series of reactions that require energy from ATP and NADPH produced in the light reactions.
Learn more about photosynthetic cells:
brainly.com/question/13833620
#SPJ4
Summarize the reactions occurring in the three phases of the Calvin cycle (fixation, reduction, regeneration). What molecules produced in the light reaction provide energy for these reactions? (RuBP, CO2, 3-phosphoglycerate, glyceraldehydes-3-phosphate (G3P))