In real life, a given system can approach equilibrium from different starting points but will still have the same equilibrium constant. How is this possible? Explain your answer in complete sentences.
Answers
In real life, a given system can approach equilibrium from different starting points but will still have the same equilibrium constant. It is because the rate of reaction for product formation and reactants forming is the same. It came to a point where their reaction attains equilibrium.
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What will happen as an object receives energy due to heat flow? The molecules will move faster. The molecules will move more slowly.
The rare earth elements include
sodium chloride and glucose both are soluble in water but the solubility of NaCl is greater then glucose why.
What is the number of pairs of electrons that are shared between the nitrogen atoms in a molecule of N2?(1) 1(2) 2(3) 3(4) 6
Silver (Ag)
Zinc (Zn)
Antimony (Sb)
Answers
Answer:
Its Silver!
Explanation:
I took a quiz, and i got it right!
Answers
Answers
Propanone is more soluble in water compared to propane mainly because propanone cannot hydrogen bond with themselves but can hydrogen bond with water molecules. One of the slightly positive hydrogen atoms in a water molecule can be sufficiently attracted to one of the lone pairs on the oxygen atom of propanone. In order for propane to bond with water, the van der Waals forces must be broken and also the stronger hydrogen bonds of water molecules and it needs a great amount of energy.
Answer:
Propanone is polar, and propane is nonpolar.
Explanation:
As we can see in the molecules below, propanone has a polar bond between Oxygen (in red) and the Carbon, because they have very different electronegativities. In the molecule of propane, there are only bonds between carbon and hydrogen, which have close electronegativities, so it's a nonpolar molecule. Water is polar too. The solubility law says that "polar dissolves polar, and nonpolar dissolves nonpolar".
It occurs because the positive pole of water (in the hydrogen) can bond with the negative pole in propanone (in oxygen) forming a hydrogen bond..
(2) increases
(3) remains the same
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An electron in an atom moves from a ground state to an excited state when the electron energy increases
Further Explanation
Excitation in physics is the addition of a number of discrete energies (called excitation energies) to a system — such as the nucleus of an atom, atom, or molecule — so as to produce a change, usually from the lowest energy state (ground state) to one of the higher energies (excited state).
In nuclear, atomic and molecular systems, excited states do not continue to be distributed but instead have certain discrete energy values. Thus, external energy (excitation energy) can be absorbed in discrete quantities.
Excitation energy is stored in excited atoms and the nucleus that emits light is usually seen from atoms and as gamma radiation from the nucleus because they return to the ground state. This energy can also be lost by collisions.
In the nucleus, energy is absorbed by protons and neutrons which are transferred to an excited state. Within a molecule, energy is absorbed not only by electrons, which are very enthusiastic for higher energy levels but also by whole molecules, which are highly excited for the discrete states of vibration and rotation.
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Electron moves brainly.com/question/496960
Excitation brainly.com/question/496960
Details
Class: High School
Subject: Chemistry
Keywords: electron, excitation, energies
(2) decomposition of the solute
(3) evaporation of the solvent
(4) titration
Answers
Answer:
4) titration
Explanation:
Titration is a standard process used in a laboratory to determine the concentration of an unknown analyte. A titrant of known concentration is gradually added to a known volume of the analyte in the presence of a suitable indicator. The end of the titration is marked by a color change of the analyte.
The given example is that of an acid(HBr) - base(NaOH) titration which can be represented by the following equation:
NaOH + HBr → NaBr + H2O
Thus 1 mole of acid gets neutralized by 1 mole of the base to form 1 mole of the salt (NaBr)
Let M1 and V1 are the molarity and volume of the base (NaOH). Here, the molarity of NaOH is known = M1 = 0.10 M and the volume, V1 corresponds to the end point in the titration.
M2 and V2 are the molarity and volume of HBr. Here, V2 is known whereas M2 needs to be determined.
Based on the reaction stoichiometry:
moles of NaOH = moles of HBr
B. nitrogen
C. ammonia
D. carbon dioxide
Answers
Carbon dioxide. This is because when fossil fuels are burned, oxygen combines with carbon to form CO2 and with hydrogen to form water (H2O). These reactions release heat that we use for energy. For example, for the same amount of energy produced, burning natural gas produces about half of the amount of CO2 produced by burning coal.
Final answer:
The burning of fossil fuels primarily releases carbon dioxide into the atmosphere, contributing to greenhouse gas emissions and global warming.
Explanation:
When fossil fuels are burned, carbon dioxide (COâ‚‚) is predominantly released into the atmosphere. Fossil fuels, such as coal, oil, and natural gas, are composed mainly of carbon. During combustion, this carbon combines with oxygen in the air to form carbon dioxide. This process is a significant source of greenhouse gases, contributing heavily to global warming. It's important to note that other substances like water vapor and minor amounts of sulfur oxides can also be produced in this reaction, but the main product is carbon dioxide.
Learn more about Burning of Fossil Fuels here:
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