Consider the following chemical equilibrium: N2 (g)+3 H2(g) ⇌ 2NH g) K from K for this reaction at an absolute temperature T. You can assume T is comfortably above Now write an equation below that shows how to calculate room temperature.
Answers
To calculate the equilibrium constant (K) for the given reaction at room temperature (typically taken as 25°C or 298K), we can use the following equation: K(room temp) = K(T) * exp(-ΔH°/RT)
K(T) is the equilibrium constant at temperature T
ΔH° is the standard enthalpy change for the reaction
R is the gas constant (8.314 J/K*mol)
T is the absolute temperature in Kelvin (298K for room temperature).
The exponential term in the equation takes into account the temperature dependence of the equilibrium constant. If ΔH° is positive, the equilibrium constant will decrease with increasing temperature, while if ΔH° is negative, the equilibrium constant will increase with increasing temperature.
Note that the values of ΔH° and K(T) for the given reaction would need to be provided in order to calculate K(room temp) using this equation.
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Related Questions
A student is trying to identify an unknown metal X. When he puts it in copper sulphate there is a reaction and red brown pieces of copper fall to the bottom of the test tube. But when he puts metal X into magnesium chloride nothing happens
A) Give two identity of metal X.
B) Out of these two which one is metal X ?
Answers
The unknown metal X is iron metal as it reacts with copper sulfate solution but does not react with magnesium chloride.
What is displacement reaction?Some metals are very reactive while other metals are less reactive or unreactive. When a more reactive metal is added to the solution of a less reactive metal, then the more reactive displaces the less reactive metal from its solution is known as a displacement reaction.
The general form of a single displacement reaction can be represented as:
\(A + BC \longrightarrow B + AC\)
When iron is placed in copper sulfate (CuSO₄) solution then the blue color of the copper sulfate solution turns a red-brown coating of copper metal deposited on the iron.
\(CuSO_4 (aq)+ Fe (s)\longrightarrow FeSO_4 (aq) +Cu(s)\)
Iron lies above the electrochemical series and is more reactive than copper. So it reacts with copper sulfate but does not give any reaction with magnesium chloride.
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In which of the following regions of the nephron is water actively transported?
(a) Proximal convoluted tubule
(b) Descending limb of the nephron loop
(c) Peritubular capillaries
(d) None of the above
Answers
A nephron is the basic functional unit of the kidney that removes waste and additional substances from the blood. It is a long, convoluted tube that extends from the Bowman's capsule to the collecting duct. The correct option in the given question is (a) Proximal convoluted tubule.
The function of the nephron is to filter blood and to create urine. The following are the different regions of a nephron:
Renal corpuscle: It consists of Bowman's capsule and glomerulus. It is the starting point of urine formation.Proximal convoluted tubule: It is responsible for the reabsorption of 60-70% of the filtered load. Water and solutes are reabsorbed from the tubular lumen back into the peritubular capillary network in this area.Nephron loop: It consists of the descending limb and ascending limb. The function of the nephron loop is to establish an osmotic gradient that allows for the formation of concentrated urine.Distal convoluted tubule: It is responsible for the reabsorption of approximately 5% of the filtered load. In this region, there is also active secretion of potassium ions and hydrogen ions into the tubular lumen.Collecting duct: It collects urine from multiple nephrons and transports it to the renal pelvis.Water is actively transported in the proximal convoluted tubule. In this region, water and solutes are reabsorbed from the tubular lumen back into the peritubular capillary network. Water is also passively reabsorbed in the descending limb of the nephron loop. Hence, a is the correct option.
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Water is actively transported in the proximal convoluted tubule. This statement is true regarding the transport of water and the region of the nephron. Approximately 65 percent of the filtrate is reabsorbed in the proximal convoluted tubule. Therefore, the correct option among the given choices is (a) Proximal convoluted tubule.
A nephron is water actively transported. It is a part of the kidney, specifically the renal tubule, that helps in filtering blood, reabsorbing essential elements, and excreting the waste in the form of urine.
Regions of the nephron include the following:
Proximal convoluted tubule (PCT)
Loop of Henle
Distal convoluted tubule (DCT)
Collecting duct
In the proximal convoluted tubule, water is reabsorbed by osmosis. Na+ ions and other substances are reabsorbed actively, making the environment of the filtrate hypotonic to blood. As a result, water moves passively from the proximal convoluted tubule to the capillaries. Approximately 65 percent of the filtrate is reabsorbed in the proximal convoluted tubule. Therefore, the correct option among the given choices is (a) Proximal convoluted tubule.
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What is the purpose of the NADH made during glycolysis?
A. It makes sugars more likely to explode.
B. It carries electrons and hydrogens to the electron transport chain.
C. It transports pyruvate around the cell
D. All of these.
E. It breaks down ATP.
Answers
NADH carries electrons and hydrogens to the electron transport chain.
The main role of NADH and FADH₂ is to donate electrons and hydrogen to the electron transport chain. NADH stands for Nicotinamide Adenine Dinucleotide (NAD) + Hydrogen (H). It also plays an important role of generating energy in the body. During the electron transport chain both NADH and FADH₂ donate electrons by providing hydrogen molecules to the oxygen molecules to create water. Both Kreb's cycle and glycolysis produces NADH.
The NADH that are produced by the body are used for generating energy for the body. Supplements are also taken for NADH but they have some side effects like blood pressure and other effects.
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what are compounds that contain ionic bonds called?
Answers
why is it necessary to indicate the state (s, i, g, aq) of products and reactants when writing a thermochemical equation?
Answers
In a thermochemical equation, the reactants' and products' physical states must be taken into account because they affect the value of H. In the course of an endothermic reaction, the environment provides energy.
What is Thermochemical Equations?The only difference between thermochemical equations and other balanced equations is that they also indicate the heat flow for the reaction. The equation's right side includes a list of the heat flow denoted by the letter H.Kilojoules, or kJ, are the most widely used units. Two thermochemical equations are provided here:H2 (g) + ½ O2 (g) → H2O (l); ΔH = -285.8 kJ
HgO (s) → Hg (l) + ½ O2 (g); ΔH = +90.7 kJ
The enthalpy of a substance depends upon temperature. Ideally, you should specify the temperature at which a reaction is carried out. When you look at a table of heats of formation, notice that the temperature of the ΔH is given. For homework problems, and unless otherwise specified, the temperature is assumed to be 25°C. In the real world, the temperature may be different and thermochemical calculations can be more difficult.A substance's enthalpy is temperature-dependent. The ideal situation would be to state the temperature at which a reaction occurs. Observe that the temperature of the H is mentioned in a table of formation temperatures. The temperature is assumed to be 25°C for homework problems unless otherwise stated. Calculations involving thermochemistry may be more challenging in the real world due to temperature variations.To Learn more about thermochemical equation refer to:
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What is the difference in degrees Fahrenheit between the maximum expected temperatures by the end of the century between the lower and higher emissions scenario? Lower Emissions Scenario - Projected T
Answers
The difference in degrees Fahrenheit between the maximum expected temperatures by the end of the century between the lower and higher emissions scenarios can vary depending on various factors and assumptions.
However, in general, the lower emissions scenario is expected to result in a lower increase in global temperatures compared to the higher emissions scenario.
This means that the maximum expected temperature rise by the end of the century under the lower emissions scenario would be lower than that of the higher emissions scenario.
The specific temperature difference would depend on the specific projections and models used, but it highlights the significant impact that emissions reductions can have on mitigating future temperature increases.
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2 chemical properties or chlorine as well as what it reacts with
Answers
Answer:
Chlorine reacts with most metals and forms metal chlorides, with most of these compounds being soluble in water. Examples of insoluble compounds include AgCl and PbCl2. Gaseous or liquid chlorine usually does not have an effect on metals such as iron, copper, platinum, silver, and steel at temperatures below 230°F.
Explanation:
And ironic bonds what happens to electrons? No
Answers
Answer:
metals donate electrons to nonsmetals
A solution contains 8 moles of solute and the mass of the solution is 4 kg. What’s the molality of this solution? a) 5 mol/kg b) 8 mol/kg c) 4 mol/kg d) 0.5 mol/kg
Answers
The molality of a 4 kg solution containing 8 moles of a solute is 0.5 mol/kg. Option d is the correct answer.
What is molality?Molality is the total number of moles of a solute present in one kilogram of a particular solvent. Molality also goes by the name molal concentration. It measures the concentration of the solute in a solution.
Molality is given by moles of a solute per kilogram of solvent. It differs from molarity, which is the number of moles of a solute per litre of the solution.
From the given question, the number of moles of the solute is 8
The mass of the solution is 4 kg.
From molality = number of moles / mass
Molality = 8 moles / 4 kg = 2
The molality is 2 for 4 kg of the solution, so for 1 kg of the solution it will be 2 / 4 = 0.5 mol/kg
Therefore, molality is 0.5 mol/ kg
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Neon is an inert gas. Why? reason.
Answers
Answer:
Neon is one of six elements, found in the rightmost column of the Periodic Table, that is inert.
Explanation:
Neon is one of six elements, found in the rightmost column of the Periodic Table, that is inert. Noble gases react very unwillingly, because the outermost shell of electrons orbiting the nucleus is full, giving these gases no incentive to swap electrons with other elements.
I'm just looking for someone to check my answers on this and correct me if I'm wrong :)This is the question:You have three elements, A, B, and C, with the following electronegativity values:A = 0.9B = 3.0C = 3.5You react the elements to form the substances AB, AC, and BC. Answer the following questions:What type of substance is AB? What types of bonds are present? Explain your answer.What type of substance is AC? What types of bonds are present? Explain your answer.What type of substance is BC? What types of bonds are present? Explain your answer.If any of the substances are ionic compounds, which element is the cation and which is the anion? Explain your answer.And these are my answers:AB is a compound. It'd be an ionic compound because the electronegativity is different in each.AC is a compound. It'd be an ionic compound because the electronegativity is different in each.BC is a compound, but the bond between them is covalent.AB is an ionic compound. A is the cation and B is the anion because the element with lower electronegativity is the cation and the element with the higher electronegativity is the anion.
Answers
Answer:
Explanations:
Given the following electronegativity of three elements as:
Assume trilobites went extinct 248 million years ago.
If a trilobite is found in a rock layer, what do you
know about the age of that rock layer?
Answers
Answer:
the rock layer is at least 248 million years old
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Which information would a scientist be least likely to receive from a weather satellite?(1 point)
Responses
data about how many storms will occur in a season
data about how many storms will occur in a season
data about precipitation
data about precipitation
data about the path of an active storm
data about the path of an active storm
data about cloud cover
Answers
information would a scientist be least likely to receive from a weather satellite is data about how many storms will occur in a season
Weather satellites are defined those satellites that are mainly used study and examine the climate and weather patterns that occur at different places on earth and it provide information about temperature, pressure and moisture content of the air, and analyzing all these data it helps in locating and tracing an upcoming storm and thereby warns the locality, where there are chances of an occurrence of storms so the scientist be least likely to receive from a weather satellite is data about how many storms will occur in a season
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GUYS !! So i have a science fair project && we get to pick what we wanna do but i need help , should i do Crystallization or Fingerprint detections ? Because they're both cool.
Answers
Answer:
fingerprint!
Explanation:
sounds cooler, and it should have fewer people in the category, making a higher chance if placing if you do it.
Answer:
Fingerprint detections
Explanation:
I did this a few months ago and lemme tell you..........ITS SO FUN....SO you should do fingerprint detections.
a) Complete the table below. b) You will use this information as a guide in creating your comic strip. c) The information for the Golgi body has already been filled in for you as an example. Structure of Cell Function Factory Part or Worker Golgi body Packages materials and distributes them within A factory worker who puts products or out of the cell in boxes and transports packaged products to the warehouses or to trucks that will leave the factory Cell wall Cell membrane
plzzz i need help!!!!
Answers
Answer:
1. Chief executive officer = Nucleus.
2. Power house = Mitochondrion.
3. Maintenance team = Lysosomes.
4. Functional managers = Chromosomes.
5. Assembly line workers = Ribosomes.
6. Assembly line = Endoplasmic Reticulum.
7. Security and support = Cytoskeleton.
8. Drivers or messengers = Vesicles.
9. Packaging unit = Golgi apparatus.
10. Gate man/procurement unit = Cell membrane.
Explanation:
A cell can be defined as the structural, fundamental, biological and functional unit of life. Cells are found in all living organisms because they are the basic unit of life.
Generally, cells have the ability to independently replicate themselves. These cells can be compared to the kind of structures found in a business or factory, where you have different workers performing different functions.
In a cell, the "workers" that perform various functions or tasks for the survival of the living organism are referred to as organelles.
Factory worker = Cell organelle.
1. Chief executive officer = Nucleus.
The nucleus controls all the activities taking place in the cell and the synthesis of proteins.
2. Power house = Mitochondrion.
The mitochondria provides all the energy required in the cell by transforming energy forms.
3. Maintenance team = Lysosomes.
They are responsible for absorbing materials and breaking the materials taken in by the cells.
4. Functional managers = Chromosomes.
They give sets of instructions for the synthesis of products.
5. Assembly line workers = Ribosomes.
They are involved in the build up of proteins.
6. Assembly line = Endoplasmic Reticulum.
This is where the ribosomes perform their tasks.
7. Security and support = Cytoskeleton.
They help to maintain and support the shape of the cells.
8. Drivers or messengers = Vesicles.
They ensure proteins are properly transported to the right and exact location.
9. Packaging unit = Golgi apparatus.
Prepares the protein for export by chemically tagging them.
10. Gate man/procurement unit = Cell membrane.
It is the wall of the cell and typically controls what leaves and enters the cell.
true or false You have to have the same number of each type of atom on the left-and right-handside of a chemical equation
Answers
Answer:
true :)
Explanation:
if the equation isn't balanced, it isn't a proper chemical equation
Which statement describes a process involved in the evolution of Earth’s early atmosphere?
A.
Cyanobacteria transformed carbon dioxide in the atmosphere into oxygen during photosynthesis.
B.
Heavier gases escaped through Earth’s atmosphere, leaving only lighter gases such as oxygen behind.
C.
Volcanic eruptions produced enough oxygen to create Earth’s atmosphere.
D.
The amount of oxygen in the atmosphere declined due to respiration, or breathing.A sea breeze is a wind that blows from the sea toward land. Which statement best explains how air pressure influences sea breezes?
A.
Wind always blows from the sea toward land, regardless of differences in air pressure.
B.
The air above the land has a lower pressure than the air above the sea.
C.
The air above the sea has a lower pressure than the air above the land.
D.
The sea and the land are at equivalent air pressures, so waves cause the wind to move toward the land.
Answers
Answer:
D
Explanation:
What should be the labels on the X-axis and Y-axis?
Answers
Answer:
The label on the X-axis is Heat Supplied or Absorbed
The label on the Y-axis is Temperature
Explanation:
The given graph is the heating curve of a substance as it is absorbs heat (increase in the x-axis) and have an increase in temperature (increase in the y-axis) between its different phases, from A to E
Therefore;
The label on the X-axis should be Heat Supplied or Absorbed
The label on the Y-axis should be Temperature
An appropriate state of phase 'A' is the solid phase of the substance where the temperature of the substance increases as heat is supplied without the substance changing into a liquid
Stage 'B' is the melting stage, when the substance transforms from solid to liquid as heat is applied, without an increase in temperature, which is seen by the horizontal line of stage 'B'
At stage 'C', the substance which is entirely liquid continues to absorb heat (moving to the right), while the temperature rises
At stage 'D', the substance in the liquid state continues to absorb heat (moving to the right), but rather than increase in its temperature, the substance transforms to the gaseous phase, which is phase 'E'
At phase 'E', the substance continue to absorb heat without changing state and therefore its temperature increases
The phases 'B', and 'D', where there is no increase in temperature as heat is added (progression to the right) are the regions where we have the latent heat of fusion and evaporation respectively.
how much energy is needed to convert 120g of ice at -35°C to steam at 150°C?
Answers
what does group 16 (oxygen family) have in common
Answers
Answer: here is your answer
Explanation:
The oxygen family consists of the elements that make up group 16 on the periodic table: oxygen, sulfur, selenium, tellurium, and polonium. These elements all have six electrons in their outermost energy level, accounting for some common chemical properties among them.
Answer:
they all have 6 valence electrons
Explanation:
all elements in group 16 have 6 valence electrons
How many moles of water is 5.02x1018 molecules
of water?
Answers
Answer:8.334×10^-6 moles
Explanation:
a mole is 6.023×10^23
5.02×10^18 ÷ 6.023×10^23=8.33×10^-6
To test the hypothesis above, you changed the
of the solvent and
measured the
of a solid.
Answers
Evaluated the solubility of the solid and altered the solvent's temperature
What influence does temperature have on a solid's solubility in a liquid, brainily?As the temperature rises, solids become more soluble in the liquid. With a temperature rise, exothermic processes slow down while endothermic processes speed up.
Do the majority of solid substances become less soluble as the temperature rises?The majority of solid substances become more soluble as the temperature rises. The impact, however, varies significantly from one solute to another and is challenging to anticipate. A solubility curve, or graph of the solubility vs. temperature, can be used to visualise the solubility dependence on temperature.
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There are many organic acids and bases in our cells, and their presence modifies the pH of the cell media (cytosol). A solution of equal concentrations of lactic acid and sodium lactate was found to have pH = 3.08.
a) What are the values of pKa and Ka of lactic acid?
b) What would be the pH is the acid had twice the concentration of the salt?
Answers
a) The pKa of lactic acid is 3.86, and the Ka is 1.38 × 10^-4.
b) If the acid had twice the concentration of the salt, the pH would increase to 3.47.
a) The pH of a solution of equal concentrations of lactic acid and sodium lactate is equal to the pKa of lactic acid, which is 3.86. Using the relationship between Ka and pKa (pKa = -log(Ka)), the Ka of lactic acid can be calculated as 1.38 × 10^-4.
b) If the acid had twice the concentration of the salt, the initial concentration of lactic acid would be twice that of the original solution. Using the Henderson-Hasselbalch equation, pH = pKa + log([salt]/[acid]), the pH of the solution can be calculated.
Since the concentration of the salt remains the same, while the concentration of the acid doubles, the ratio of [salt]/[acid] becomes 0.5. Plugging in the values, pH = 3.86 + log(0.5) = 3.47. Therefore, the pH of the solution would increase to 3.47.
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Modern periodic table is based upon atomic number. Explain what does the modern periodic table states about the atomic numbers ?
Answers
Answer:
Explanation:Elements of the periodic table are arranged in order of increasing atomic number. The periodic law states “When elements are arranged in order of increasing atomic number, there is a periodic repetition of their chemical and physical properties.”
What is the name of this isotope? P-17 N-22
Answers
Answer:Chlorine
Explanation:
This isotope is Chlorine because an atom with 17 protons will always be chlorine, just as an atom with 1 proton will always be hydrogen, for example
If atmospheric pressure measurement for taking at regular intervals from sea level to the stratopause The measurements with most likely show that the pressure
Answers
Answer:
Troposphere
Explanation:
The troposphere is the lowest layer of Earth's atmosphere that extends from under the stratosphere down to the surface of the earth. Nearly all weather condition takes place in the troposphere. The troposphere contains about 75% of the atmosphere's mass and 99% of the total mass of water vapour and aerosols in the atmosphere.
Answer: Pressure decreases.
Explanation:
Atmospheric pressure is termed as the downward force applied by the weight of air against a particular area on Earth's surface. the Standard atmospheric pressure is determined by weighing the column of air occupying 1 square inch on Earth's surface which begins at sea level and moves upward to the uppermost layer of the atmosphere
Measuring the Atmospheric pressure from sea level to the stratosphere,the second layer of the atmosphere which contains the most of the ozone gas show that the pressure decreases
Place each example into the corresponding characteristic used to distinguish species.
Molecular features
Answers
There are some example of characteristic used to distinguish species. Morphological Traits: the quantity of stamens in a flower.
Reproductive isolation: frequency and length of sounds in frog mating calls.
Molecular features :Amoeba mRNA sequences
Ecological factors: The section of the tree occupied by warblers for breeding and the salt marsh plants' susceptibility to saltwater.
A species cannot successfully reproduce with another species due to barriers resulting from geography, behavior, physiological, molecular features, genetic differences, or other factors. Examples of Molecular Traits of Morphological Traits features include the shape and structure of an animal's internal organs and bones, as well as alterations to the animal's external appearance. A snowshoe hare, for instance, is well-equipped for the winter months because of its huge rear feet for quick movement and its white coat for stealth.
Your question is incomplete but most probably your full question was
Place each example into the corresponding characteristic used to distinguish species.
Morphological traits
Reproductive isolation
Molecular features
Ecological factors
The quantity of stamens in a flower.
Frequency and length of sounds in frog mating calls
Amoeba mRNA sequences
The section of the tree occupied by warblers for breeding and the salt marsh plants' susceptibility to saltwater.
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Which substance is the most soluble at 60 degrees Celsius? How do you know?
Answers
Answer:
NH4CL is the answer
Explanation:
Hope it helps you
an unknown alkene was treated with mcpba in dichloromethane, followed by work-up with h2o/h . a racemic mixture of the compound shown below was obtained. what is correct name of the starting alkene? A. (Z)-3-Methylpent-2-ene B. (E)-3-Methylpent-2-ene C. 2-Methylpent-2-ene D. 2,3-Dimethylbut-2-ene E. none of the above
Answers
Option A. Z)-3-Methylpent-2-ene is the correct name of the starting alkene
What is a starting alkeneA starting alkene refers to the initial unsaturated hydrocarbon compound used in a chemical reaction or synthesis. It is the precursor or starting material from which other compounds or products are formed through various chemical transformations.
In organic chemistry, alkene refers to a class of hydrocarbons that contain a carbon-carbon double bond. These compounds are important intermediates in many organic reactions and serve as building blocks for the synthesis of more complex molecules.
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The atomic number of calcium is 20. This number means that calcium has 20 protons. The atomic mass of calcium is 40. How many neutrons does calcium have? (Remember: protons + neutrons = atomic mass.)
ASAP NOW PLS
Answers
Answer:
Otherwise, positive charge means that the element lost an electron and negative charge means it gained an electron. (3) The atomic mass is equal to the sum of the number of protons and number of neutrons. An atom of the calcium-40 isotope has 20 neutrons in its nucleus.