If an electrochemical cell has a positive standard cell potential but a negative cell potential K>1; Q>K.
The standard electrode potential is a gauge of the equilibrium potential. The potential of the electrode is the difference in potential between the electrode and the electrolyte. When the concentrations of all the species present in a semi-cell are represented by unity, the electrode potential is referred to as the standard electrode potential.
Given E0 cell is positive and Ecell is negative. Such that from the below equation we can find that Ecell = E0cell - (0.0592/nF)logQ. So, if Q>K then the required conditions are met. These conditions represent a spontaneous redox reaction.
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three moles of an ideal monatomic gas are at a temperature of 345 k. then, 2438 j of heat is added to the gas, and 962 j of work is done on it. what is the final temperature of the gas?
The final temperature of gas is approximately 436 K . if three moles of an ideal monatomic gas are at a temperature.
What are monatomic atoms?Monoatomic (monatomic): A molecule composed of just one atom, and lacking any covalent bonds. The noble gases (He, Ne, Ar, Kr, Xe, and Rn) are all monoatomic, whereas most other gases are at least diatomic.
What is monatomic or diatomic?Complete answer: Monatomic gas is the gas that has molecules containing a single atom only while diatomic gas has the molecule containing two atoms. Similarly, triatomic gas contains molecules with three atoms. The hydrogen gas exists as a diatomic molecule, as it contains two atoms of hydrogen.
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f the original mass of wo3 is 37.0 g, how many grams of co2 must be collected from the reaction in order to infer that the solid that remains is pure tungsten
11 grams of CO2 must be collected from the reaction in order to infer that the solid that remains is pure tungsten.
What is chemical reaction example?A chemical reaction is a process in which reactants react chemically and convert into products by chemical transformation. For example, Respiration – we inhale oxygen which reacts with glucose and produces carbon dioxide, water and energy.
How does a chemical reaction start?When atoms establish or break chemical bonds, chemical processes take place. Reactants are the substances that begin a chemical reaction, while products are the compounds that are created as a result of the reaction.
Given:
WO3 = 37.0 g
Chemical reaction,
2WO3(s) + 3C(s) ↔ 2W(s) + 3CO2(g)
(37 grams WO3) / (232 grams) = 0.159 moles WO3(0.159 moles WO3) x (3 moles CO2 / 2 moles WO3) = 0.239 moles CO2(0.239 moles CO2) x (44 grams CO2) = 10.5 grams
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A ga occupie a volume of 400cm³ at 500k and 1 atmophere preure. What will be the temperature of the ga when the volume and preure of the ga i 100cm³ and 0. 5 atmophere repectively
The temperature will be 62.5K when the volume and pressure of the ga 100cm³ and 0. 5 atmosphere.
What is stated by the combined gas law?The ratio of the product of the original pressure and volume to the original temperature will equal the ratio of the product of the new pressure and volume to the new temperature, or, according to a commonly used version of the combined gas law.
What are the three gas laws?According to Boyle's Law, gas volume grows as pressure lowers. According to Charles' Law, a gas expands in volume as its temperature rises. Additionally, Avogadro's Law states that as the number of gases increases, so does the volume of the gas.
From the combined gas law equation:
p1V1/T1 = p2V2/T2
where p1 - initial pressure, V1 - initial volume, T1 - initial temperature, p2 - final pressure, V2 - final volume, T2 - final temperature.
T2 = p2V2T1 / p1V1
As a result:
T2 = (0.5 atm × 100 cm3 × 500 K) / (1 atm × 400 cm3) = 62.5 K
T2 = 62.5 K
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Which of the following nuclear processes results in an increase in the number of neutrons in the product element? 1. Alpha emission II. Beta emission III. Positron emission IV. Electron capture O A) III and IV O B) II, III, and IV OC) | and II O D) I, II, III, and IV OE) I, II, and I
The atomic number of an element increases as a result of beta decay, where one of the neutrons in the nucleus abruptly transforms into a proton.
What are nuclear reactions?Atoms occasionally transform abruptly into whole other atoms without prior notice since they aren't content with being who they are. Nuclear reactions, which transform one nucleus into another nucleus, are based on this inexplicable shift from one sort of element into another. Nuclear reactions take place when the ratio of protons and neutrons in an atom's nucleus changes, much way chemical reactions do when molecules exchange electrons, transforming one compound into another.Protons can sometimes be forced out of the nucleus or transformed into neutrons in certain nuclear processes.When an element's atomic number (number of protons) changes, so does its name since we determine what it is called by looking up the element's number on a periodic table and then reading off its name. Since an atom of potassium (atomic number 19) can abruptly change into an atom of calcium, nuclear processes resemble alchemy in this regard (atomic number 20). We'll discuss more about the radiation discharge in a moment, but that is the only indication that anything has changed.To Learn more About beta decay refer To:
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Complete and balance each of the following equations. If no reaction occurs, write NOREACTION. Express your answer as a chemical equation. Identify all of the phases in your answer.
1) KCl (aq) + CaS (aq) -->
2) CrBr2 (aq) + Na2CO2 (aq) -->
3) NaOH (aq) + FeCl3 (aq) -->
4) NaCl (aq) + Hg2(C2H3O2)2 (aq) -->
5) (NH4)2SO4 (aq) + SrCl2 (aq) -->
6) NH4Cl (aq) + AgNO3 (aq) -->
The following equations. If no reaction occurs: 1) NOREACTION, 2) CrBr2 (aq) + Na2CO2 (aq) --> 2NaBr (aq) + Cr(CO3)2 (s), and given below:
What is reaction?Reaction is the process by which a material or substance undergoes a change due to the introduction of an external factor. It is an action or response to a stimulus, and can be either physical or chemical in nature. Chemical reactions involve changes in the composition of the substances involved, while physical reactions involve changes in the physical properties of the substances.
3) NaOH (aq) + FeCl3 (aq) --> NaCl (aq) + Fe(OH)3 (s)
4) NaCl (aq) + Hg2(C2H3O2)2 (aq) --> 2NaC2H3O2 (aq) + Hg2Cl2 (s)
5) (NH4)2SO4 (aq) + SrCl2 (aq) --> 2NH4Cl (aq) + SrSO4 (aq)
6) NH4Cl (aq) + AgNO3 (aq) --> AgCl (s) + NH4NO3 (aq)
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what trend in ionization energy do you see as you go down a group/family on the periodic table? what causes this trend?
As you progress down a group, the first ionization energy normally drops. This is because the outermost electron is typically held less securely and can be removed with less energy because it is farther away from the nucleus.
As you descend a group family on the periodic table, what pattern do you notice?The electronegativity of a group diminishes from top to bottom. This is due to the fact that as atomic number decreases within a group, the atomic radius—the separation between the valence electrons and nucleus—increases.
As you move through the periodic table, what pattern do you notice in the ionization energy?First ionization energy normally rises from left to right across a period on the periodic table. This is because.
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Typically, the initial ionization energy decreases as you move along a group. This is because the outermost electron is typically held less securely and can be removed with less energy because it is farther away from the nucleus.
As you descend a group family on the periodic table, what pattern do you notice?A group's electronegativity decreases at top to bottom. This is because the atomic radius—the distance in between outer electrons and nucleus—increases as atomic number within a group decreases.
What pattern do you see in the ionization energy as you progress through the periodic table?On the periodic table, the first ionization energy typically climbs across a period from left to right.
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The drawings below represent aqueous solutions. Solution A is 2.00 L of a 2.00-M aqueous solution of copper(II) nitrate. Solution B is 2.00 L of a 3.00-M aqueous solution of potassium hydroxide. a. Draw a picture of the solution made by mixing solutions A and B together after the precipitation reaction takes place. Make sure this picture shows the correct relative volume compared to solutions A and B, and the correct relative number of ions, along with the correct relative amount of solid formed. b. Determine the concentrations (in M) of all ions left in solution (from part a) and the mass of solid formed.
The mass of the solid is 293 g. if A 2.00 L of 2.00-M aqueous solution of copper(II) nitrate. Solution B is 2.00 L of 3,00-M aqueous solution of potasSium hydroxide.
What can happen if your potassium level is too low?A low potassium level can make muscles feel weak, cramp, twitch, or even become paralyzed, and abnormal heart rhythms may develop. The diagnosis is based on blood tests to measure the potassium level. Usually, eating foods rich in potassium or taking potassium supplements by mouth is all that is needed.
Can low potassium be cured?Hypokalemia is treatable. Treatment usually involves treating the underlying condition. Most people learn to control their potassium levels through diet or supplements.
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If the ph of a solution is increased from ph 5 to ph 7, it means that the?
If the pH of a solution is increased from pH 5 to pH 7, it means that the solution has become more alkaline. The pH scale ranges from 0 to 14, with 7 being neutral, less than 7 being acidic, and greater than 7 being basic or alkaline.
A pH increase from 5 to 7 means that the concentration of hydroxide ions in the solution has increased, leading to a higher level of basicity.
A change in pH can have significant impacts on the chemical and biological systems that the solution interacts with. For example, a change in pH can alter the solubility of certain substances, alter the activity of enzymes, or affect the growth and behavior of microorganisms. It is important to carefully control the pH of solutions in various applications, such as in food and beverage processing, pharmaceutical manufacturing, and environmental management.
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When zinc is heated redness in a current of steam,hydrogen gas is obtained.write an equation
when a Zn react with the steam ie, heated with a steam the product formed wiil be Zinc hydroxide and hydrogen gas.
Zn(OH)2 + H2
the three states of matter are solid, liquid, and gas. in which state does matter take up the most volume? a. they all take up the same volume. b. in the gas state c. in the liquid state d. in the solid state
We are know that gas takes the shape of the container it is kept in. As a result, matter occupies the largest volume in the gaseous state.
What do you mean by matter?Matter is anything that occupies space and has mass, in other sense, matter is the "something" from whichthe universe is formed. The fundamental building components of all stuff are called elements. They don't change into the other elements through normal chemical processes and have distinct chemical and physical properties.
State of matter.The 3 states of matter include solid, liquid, & gas. It is possible to comprehend why they have various qualities by looking at the arrangement of their particles.
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which of the following would occur if solid nh4cl was added to an aqueous solution of nh3?
The pH decreases.
The equilibrium constant changes.
The pH increases.
NH3 will ionize to a greater extent.
Adding solid nh4cl to an aqueous solution of nh3 lowers the pH.
NH4Cl is a salt. That is, when dissolved in water, it dissociates into its corresponding ions, namely NH4+ and Cl-. NH4+ wants to balance. Dissociates into H+ and NH3. However, the solvent contains more NH3, which promotes the reverse reaction. Therefore, NH4 remains and more NH4 is produced until equilibrium is reached. This raises the pH. In chemical reactions, chemical equilibrium is the concentration of both reactants and products that do not change over time and is the state of no observable change in system properties.
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mixtures typically melt at different temperatures than the pure substances they are composed of. brass is a mixture composed of copper and zinc, and it melts at temperatures between 820 degrees celsius ( oc) and 1030 degrees celsius ( oc). why might different samples of brass melt at different temperatures?
Different samples of brass may melt at different temperatures due to variations in their composition. Impurities or other trace elements present in the brass can also affect the melting point.
Which metal is the easiest to melt?The metal which is easiest to melt and has a low melting point is mercury. Mercury has the lowest melting point reaching in at -39 C, while on the other hand aluminium alloys melt at 463-671 C.
What are the main uses of brass?Brass is still mainly used in applications where there is need of corrosion resistance and low friction. It is used in locks, zippers, plumbing, valves, and electrical plugs and sockets. It is used vastly in making of some musical instruments also.
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Consider the following isomerization reactions of some simple sugars and values for their standard Gibbs free energy ΔG∘:reaction A:reaction B:glucose-1-phosphatefructose-6-phosphate⟶⟶glucose-6-phosphate,glucose-6-phosphate, ΔG∘=−7.28 kJ/mol ΔG∘=−1.67 kJ/molPart ACalculate ΔG∘ for the isomerization of glucose-1-phosphate to fructose-6-phosphate.
Figures for such simple sugars' esterification reactions with That is -5.61 kj/mol and the typical Kinetic free energy "G" reaction.
What are free energy of Gibbs and entropy?Entropy is a unit of measurement for the amount of heat that diffuses or is communicated during a chemical reaction. How is it has said Gdp energy is free? Gibbs energy is frequently referred as as inspiration and self to initiate a chemical reaction and is evaluated at constant pressure and temperature.
Gibb's spontaneous energy is often called free energy because it is always available. The reaction can acquire this energy if necessary without making any effort. To calculate the variance in Gibb's free energy, hysteresis and the system's total heat and entropy are added.
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module 9 lesson 3 assignment: concentration directions: use what you have learned about molarity, molality, mass percent, and mole fraction to solve the following problems. be sure to show your work and circle or highlight your answer. please submit your work via the link provided. calculate the molarity of 0.060 moles nahco3 in 2500. ml of solution.
A solution with a molarity of 0.024 M contains 0.060 moles of nahco3 in 2500 ml. When describing how concentrated a solution is, molarity is an essential measurement.
The solution's volume has a big impact on the concentration, a solution based on molarity. In this post, we learned about molarity and molality, along with their units and computation procedures. When the solute and solvent interact, any solution can form in a homogenous mixture. A solute is a substance that is present in a solution in less of it than the solvent, and it dissolves in the solvent, which is present in a greater quantity.
Molarity is the quantity of solute in moles per litre of solution.
2.5 L and 0.060 mol of NaHCO3 are equal to 0.024 M.
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a compound is found to contain 53.70% iron and 46.30% sulfur. Find The Empirical Formula Of A Compound Containing 53.70% Iron And 46.30% Sulfur
Fe2S3 is The Empirical Formula Of A Compound Containing 53.70% Iron And 46.30% Sulfur.
Fe = 0.961 mol and S = 1.44 mol, Now divide them to get lowest empirical formula. When the subscripts in a chemical formula represent the simplest ratio of the kinds of atoms in the compound, the formula is called an empirical formula.
Most ionic compounds are described with empirical formulas. A molecular formula describes the actual numbers of atoms of each element in a molecule. A compound that contains ions and is held together by ionic bonds is called an ionic compound. The periodic table can help us recognize many of the compounds that are ionic:
When a metal is combined with one or more nonmetals, the compound is usually ionic. This guideline works well for predicting ionic compound formation for most of the compounds typically encountered in an introductory chemistry course. However, it is not always true (for example, aluminum chloride, AlCl3, is not ionic).
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Liquid Measurements Water Isopropyl Alcohol Mass A Graduated Cylinder (9) 17.83 18.07 Volume (mL) 5 5 Mass B: Graduated Cylinder with Liquid (9) 23.54 23.9 Mass B-A Liquid (9) 5.71 5.83 Density (g/mL) 3.56 3.61 Percent Error (%)
the percent error for the density of the liquid in each graduated cylinder is -1.38% in A and 1.39% in B
To calculate the percent error for the density of the liquid in each graduated cylinder, we need to use the following formula:Error percent is calculated as [(experimental value - acceptable value) / accepted value]. x 100. First, we'll calculate the density of the liquid in graduated cylinder A: Density of liquid A = mass of liquid A / volume of liquid A = (23.54 - 17.83) g / 5 mL = 3.56 g/mLNow we'll calculate the percent error for density of liquid A: % Error = [(3.56 g/mL - 3.61 g/mL) / 3.61 g/mL] x 100 = -1.38%. Next, we'll calculate the density of liquid B: Density of liquid B = mass of liquid B / volume of liquid B = (23.9 - 18.07) g / 5 mL = 3.61 g/mL. Now we'll calculate the percent error for density of liquid B:% Error = [(3.61 g/mL - 3.56 g/mL) / 3.56 g/mL] x 100 = 1.39%. It's worth noting that the percent error for the density of liquid A and B are opposite in sign and similar in magnitude, this implies that the measurement errors in mass and volume are likely to be canceled out when measuring the density, resulting in relatively low error.
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a 15.0-g sample of nitrogen is burned in excess oxygen. the result is a single gas with a mass of 49.3 grams. what is the empirical formula of the gas? group of answer choices
When a 15.0-g sample of nitrogen is burned in excess oxygen. Which result is a single gas with a mass of 49.3 grams. the empirical formula of the gas is NO2.
What is a Nitrogen?The chemical element with the atomic number 7 and the letter N is known as nitrogen. The lightest element in group 15 of the periodic table, often termed as the pnictogens, nitrogen is a nonmetal. It is a typical element in the cosmos, believed to be eighth in the Milky Way and the Solar System in terms of overall abundance.
Nitrogen has the following general specifications:Symbol: NAtomic number: 7Atomic mass: 14.0067 uElectrons per shell: 2,5Electron configuration: [He] 2s22p3Discoverer: Daniel RutherfordChemical series: Nonmetal, Pnictogen, Period 2 elementTo know more about Nitrogen visit
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if i have an unknown quantity of gas at a pressure of 1.2 atm, a volume of 31 liters, and a temperature of 87 0 c, how many moles of gas do i have?
The measurements for such question indicate that we possess 1.259 mol of gas.
Is 37 degrees Fahrenheit hot or cold?Your body temperature is usually around 37 °C. When his body is 37.8°C or greater, you typically have a fever. You might feel hot, cold, or shaky. You can tell if you have a fever by testing your temperature with a thermometer.
Pressure of gas = 1.2 atm
Volume of gas = 31 L
Temperature of gas = 87°C
Number of moles = ?
The generic gas equation will be used to address the given problem.
PV = nRT
P= Pressure
V = volume
n = number of moles
R is equal to 0.0821 atm.L/mol.K for general gases.
T = temperature in kelvin
Now we will convert the temperature.
87+273 = 360 K
by putting values,
1.2 atm × 31 L = n×0.0821 atm.L/ mol.K × 360 K
37.2 atm.L = n× 29.556 atm.L/ mol
n = 29.556 atm.L/mol / 37.2 atm.L
n = 1.259 mol
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a 50.0 ml sample of koh is titrated with a o.8186 m hcl solution. the titration requires 27.87 ml of the hcl solution to reach the equivalence point. what is the moarity of the koh solution?
The molarity of the KOH solution is 0.46 M
A titration is a technique where a solution of known concentration is used to determine the concentration of an unknown solution. For titration procedures, it is important to determine the chemical reaction involved. For this problem, the reaction would be:
KOH + HCl = KCl + H2O
We calculate as follows:
0.02787 L ( 0.8186 M ) ( 1 mol KOH / 1 mol HCl ) = 0.0228 mol KOH
MOlarity =moles of solute / liters of solution
Molarity = 0.0228 / 0.05
Molarity = 0.46 M KOH
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in the beta oxidation pathway, when the starting fatty acid contains n carbons, what is the product of the enzyme acyl-coa synthetase? assume the starting saturated fatty acid contains n carbons and n is an even number.
In the beta oxidation pathway, the product of the enzyme acyl-coa synthetase when the starting fatty acid contains n carbons is, an acyl-CoA molecule.
What is Beta oxidation pathway?The word "β-oxidation" refers to an oxidation that occurs in the fatty acid's -carbon when two carbon atoms are removed from the carboxyl end of the molecule at a time. By means of a process known as beta oxidation, fatty acids with an even or odd number of carbon atoms as well as unsaturated fatty acids are oxidised.
The acyl-CoA molecule contains n-carbon fatty acid, which is covalently bound to Coenzyme A (CoA) through a thioester bond. The starting fatty acid is a saturated fatty acid containing n carbons, where n is an even number.
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why do you think the molecular geometry and bond angle for these molecules (ch4, nh3, and h2o) are different even though they have the same amount of total electron groups?
This is because of the variation in lone pairs CH4 has no lone pair [Tetrahedral], NH3 has 1 lone pair[Pyramidal], H2O has 2 lone pair[Bent].
What is bond angle?A complex molecule's or ion's bond angle is the angle between both the two bonds, or the angle between two orbitals that contain bonding electron pairs surrounding the central atom. It is computed using a spectroscopic approach and expressed in degrees.
What affects bond angle?There are several common aspects to take into account, including the size of the involved atoms, the presence of lone pairs, numerous bonds, big groups connected to the core atom, and the environment the molecule is situated in.
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valency of all elements
Answer:
Number Valency
Valency of Hydrogen 1 1
Valency of Helium 2 0
Valency of Lithium 3 1
Valency of Beryllium 4 2
Valency of Boron 5 3
Valency of Carbon 6 4
Valency of Nitrogen 7 3
Valency of Oxygen 8 2
Valency of Fluorine 9 1
Valency of Neon 10 0
Valency of Sodium (Na) 11 1
Valency of Magnesium (Mg) 12 2
Valency of Aluminium 13 3
Valency of Silicon 14 4
Valency of Phosphorus 15 3
Valency of Sulphur 16 2
Valency of Chlorine 17 1
Valency of Argon 18 0
Valency of Potassium (K) 19 1
Valency of Calcium 20 2
Valency of Scandium 21 3
Valency of Titanium 22 4
Valency of Vanadium 23 5,4
Valency of Chromium 24 2
Valency of Manganese 25 7, 4, 2
Valency of Iron (Fe) 26 2, 3
Valency of Cobalt 27 3, 2
Valency of Nickel 28 2
Valency of Copper (Cu) 29 2, 1
Valency of Zinc 30 2
A) 2Fe3+(aq)+3Sn(s)->2Fe(s)+3Sn2+(aq)
B) O2(g)+2H2O(l)+2Cu(s)->4OH-(aq)+2Cu2+(aq)
C) Br2(l)+2I-(aq)->2Br-(aq)I2(s)
Calculate the equilibrium constant for each of the reactions at 25 degrees celcius
*Express your answer using one significant figure.
K=?
0.14-0.036) x 6 = 0.624 0.624/.0592 = 10.54054054 At 25 degrees Celsius, each reaction's equilibrium constant is 1010.54054.
What does Celsius stand for?Degree (Celsius) (Celsius) Temperature measurements are frequently made using the degree Celsius. Celsius degrees are represented by the sign °C. The freezing and boiling points of water are used to form the Celsius scale, with 0°C and 100°C respectively.
What makes degrees Celsius so special?It bears the name Celsius in honor of the Swedish scientist Hans Celsius (1701–1744), who initially proposed the temperate scale in 1742. The estate's Latin name, celsus, which means "mound," became the surname.
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0.14-0.036) x 6 = 0.624 0.624/.0592 = 10.54054054 At 25 degrees Celsius, each reaction's equilibrium constant is 1010.54054.
What makes degrees Celsius so special?It bears the name Celsius in honor of the Swedish scientist Hans Celsius (1701–1744), who initially proposed the temperate scale in 1742. The estate's Latin name, celsus, which means "mound," became the surname.
A) (0.14-0.036) x 6 = 0.624
0.624/.0592 = 10.54054054
10^10.54054054 = 3.47 x 10^10 or 3.0 x 10^10 .
B) (.40-.34) x 4 = .24
.24/.0592 = 4.054054054
10^4.054054054 = 1.13 x 10^4 or 1.0 x 10^4 .
C) (1.09-.54) x 2 = .55
.55/.0592 = 18.58108108
10^18.58108108 = 3.81 x 10^18 or 4.0 x 10^18 .
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Determine the electron geometry (eg) and molecular geometry (mg) of the underlined atom CH3OCH3.
Answer options:
eg=trigonal bipyramidal, mg=tetrahedral
eg=linear, eg=linear
eg=tetrahedral, mg=tetrahedral
eg=tetrahedral, mg=bent
eg=octahedral, mg=square planar
Electron geometry (eg) = tetrahedral and molecular geometry (mg) = tetrahedral, is correct option for given question.
What is the geometry of the molecule?The organization of atoms in a molecule in three dimensions is known as molecular geometry, commonly referred to as the molecular structure. A compound's polarity, reactivity, state of matter, colour, magnetism, and biological activity can all be determined by knowing its molecular structure.
What distinguishes molecular geometry from electron geometry?Molecular geometry is the configuration of atoms within a molecule, typically in relation to a single center atom. Electron geometry is the configuration of the electron pairs around with a central atom.
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for cis-1,3-dimethylcyclohexane, which structures represent the possible boat conformations?
The two possible boat conformations of cis-1,3-dimethyl cyclohexane are the A) chair-boat and D)the twist-boat conformations.
The chair-boat conformation of cis-1,3-dimethyl cyclohexane has two methyl groups in the equatorial positions and two hydrogens in the axial positions. This conformation occurs when the molecule is twisted about 120° from the chair conformation.
The twist-boat conformation is similar to the chair-boat conformation, except the twist is greater than 120°. In the twist-boat conformation, the two methyl groups are in the axial positions while the two hydrogens are in the equatorial positions.
Both of these conformations are stabilized by the intramolecular hydrogen bonding between the hydrogen and the methyl group. This hydrogen bonding helps to reduce the overall strain within the molecule, allowing the molecule to exist in either of these stable conformations.
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when has glucose been broken down from its original 6 carbon molecule to 6 molecules of carbon dioxide?
After the second turn through the Krebs cycle the glucose molecule has been broken down completely from its original 6 carbon molecule to 6 molecules of carbon dioxide.
Krebs cycle starts when acetyl-CoA combines with a four-carbon molecule. That molecule is called OAA. This produces citric acid which has six carbon atoms. The Krebs cycle is also known as the citric acid cycle. After the formation of citric acid, it goes through a series of reactions and release energy. The energy is captured in molecules of NADH, ATP, and FADH2. Carbon dioxide releases as a waste product of the reactions. The final step of the Krebs cycle is the re-generation of OAA. This is the molecule that began the Krebs cycle. This molecule is needed for the next turn through the cycle. Two turns are needed for the complete process. It is because of the glycolysis produces two pyruvic acid molecules when it splits glucose.
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natasha wrote a table comparing pure substances and mixtures. what correction should be made to natasha's table? a elements and compounds are considered mixtures. b pure substances can be separated using physical means. c mixtures contain at least three or more substances. d mixtures are substances that are not chemically combined.
No correction is required in table of pure substances and mixtures.
A mixture contains further than one chemical substance, and thus isn't pure. The substances in a mixture can be rudiments, composites, or both.
Pure substances can be separated using physical means. rudiments and composites are considered fusions. fusions are substances that aren't chemically combined. fusions contain at least three or further substances
A mixture is a physical combination of two or further substances. These aren't combined chemically. The factors retain their individual properties indeed after forming a mixture.
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true/false. Given the equation representing a reaction at equilibrium: N2(g) 3H2(g) ( 2NH3(g) Explain, in terms of collision theory, why the rate of the forward reaction decreases when the concentration of N2(g) is decreased.
Less actual collisions. Because there is fewer N₂ molecule to collision with H₂ molecules, the forward reaction's pace slows down. Because crashes happen less frequently, the rate decreases.
What does the term "reaction" in chemistry mean?In a chemical reaction, one or more chemicals, usually known as reactants, change into same or more other compounds, frequently referred to as products.
What are reactions and how do they differ?Pairing, decomposition, fixed, double-replacement, and conflagration are the five fundamental kinds of chemical processes. You may classify a reaction into one of these groups by looking at the reactants and products. Several categories will apply to some reactions.
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The complete question is-
Given the equation representing a reaction at equilibrium:
N₂(g) + 3H₂(g) <==>2NH₃(g)
Explain, in terms of collision theory, why the rate of the forward reaction decreases when the concentration of N₂(g) is decreased.
what amount of heat is required to convert 10.1 g of an unknown liquid that has a molar mass of 83.21 g/mol at 19.2 celcius to a gas at 93.5 degrees celcius. the specific heat capacity of the liquid is 1.58 j/g celcius. specific heat capacity of gas
The amount of heat is required to convert 10.1 g of an unknown liquid that has a molar mass of 83.21 g/mol to a gas is found to be 3680 J.
How do you figure out how much heat is needed to turn a liquid into a gas?1. The amount of energy needed to increase a liquid's temperature from 19.2° to 57.3°. q = mCT q = heat =? m = mass = 10.1 g C = specific heat of liquid = 1.58 J/go
T = temperature change = 57.3 - 19.2 = 38.1 o q = (10.1 g) (1.58 J/go) (38.1 o) = 608
2. The temperature needed to turn a liquid into a gas at 57.3 degrees (phase change)
q = m
Hvap = enthalpy of vaporisation = 22.5 kJ/mol x 1 mol / 83.21 g = 0.2704 kJ/g = 270.4 J/g q = (10.1 g)(270.4 J/g) = 2731 J. Hvap = heat =? m = mass = 10.1 g
3. The amount of heat needed to increase the gas' temperature from 57.3° to 93.5° q = mCT q = heat =? the gas's specific heat is 0.932 J/go and the mass is 10.1 g. T = temperature change = 93.5o - 57.3o = 36.2o q = (10.1 g)(0.932 J/go)(36.2o) = 341 J
4. To determine the overall amount of heat required, add the heats from each step.
608 J + 2731 J + 341 J = 3680 J
By specific heat, what is meant?One gramme of a substance's temperature can be raised by one degree Celsius by applying a certain amount of heat, or specific heat. Calories or joules per gramme per degree Celsius are frequently used as the units of specific heat. For instance, water has a specific heat of 1 calorie (or 4.186 joules) per gramme per degree Celsius.
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What amount of heat (in kJ) is required to convert 10.1 g of an unknown liquid (MM = 83.21 g/mol) at 19.2 °C to a gas at 93.5 °C? (specific heat capacity of liquid = 1.58 J/g･°C; specific heat capacity of gas = 0.932 J/g･°C; ∆Hvap = 22.5 kJ/mol; normal boiling point, Tb = 57.3°C)
true or false: the exponents in a rate law are always equal to the coefficients in a balanced chemical reaction.
The give statement that the exponents in a rate law are always equal to the coefficients in a balanced chemical reaction is false.
What is reaction rate?Reaction rate is the rate at which a chemical reaction moves forward. It is frequently described in terms of either the concentration of a reactant that is consumed in a unit of time or the concentration of a product that is generated in a unit of time (amount per unit volume).
The exponents in a rate law, which describe the dependence of the reaction rate on the concentrations of the reactants, are determined experimentally and may not be equal to the coefficients in the balanced chemical equation for the reaction.
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