Which of the following molecules has a bent structure?A. O2
B. CO2
C. H2O
D. CH4
Answers
Answer : The correct option is, (C)
Explanation :
Formula used:
where,
V = number of valence electrons present in central atom
N = number of monovalent atoms bonded to central atom
C = charge of cation
A = charge of anion
First we have to determine the hybridization of the following molecules.
(a)
This is diatomic molecule and diatomic molecules always form linear shape.
(b)
The number of electrons is 2 that means the hybridization will be and the electronic geometry of the molecule will be linear.
(c)
The number of electrons is 4 that means the hybridization will be and the electronic geometry of the molecule will be tetrahedral.
But as there are two atoms around the central oxygen atom, the third and fourth position will be occupied by lone pair of electrons. The repulsion between lone and bond pair of electrons is more and hence the molecular geometry will be bent.
(d)
The number of electrons is 4 that means the hybridization will be and the electronic geometry of the molecule will be tetrahedral.
Hence, the molecule has bent structure will be,
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The formula HCl stands for ____.a. hydrochloric acid b. the hydronium ion c. sodium hydroxide d. hydrogen peroxide
Which statement best explains the change that occurs when gas particles move more slowly
Answers
Answer:
The rubber becomes brittle and can break in your hand. The explanation for why this happens concerns cross-linking bonds. Ultra-violet light from the sun provides the polymer molecules with the activation energy they need to be able to form more cross-links with other chains.
Final answer:
If excessively excessive cross-links are formed in rubber, it becomes overly rigid and brittle, hampering its natural elasticity and strength. The increase in cross-links restricts the moving of the polymer chains, undermining the effectiveness of the rubber in many applications.
Explanation:
The formation of cross-links in rubber significantly affects its properties. In the case where too many cross-links are formed, the rubber is likely to become overly rigid and brittle. This is because the cross-links restrict the movement of the polymer chains, which reduces flexibility and elasticity. As a result, too many cross-links can compromise the usefulness of rubber for many applications, which require its natural elasticity and strength. For example, in a rubber band, if too many cross-links were formed, then it would be less stretchy and snap more easily when stretched.
Learn more about Rubber Cross-linking here:
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precipitation
perception
Answers
Watering isn't the right term.
Perception is seeing something.
Answer:
Precipitation
Explanation:
Answers
Answer:
False. The statement is not entirely accurate.
Explanation:
Infrared (IR) photons can be emitted in various ways, not solely dependent on the presence of empty electronic energy levels close to the ground state. IR photons are typically associated with changes in molecular vibrational or rotational energy levels rather than electronic energy levels.
IR spectroscopy, for example, focuses on the interaction of IR radiation with molecules. When molecules undergo vibrational or rotational transitions, they can emit or absorb IR photons. These transitions are related to changes in the kinetic and potential energy of atoms within the molecule as they vibrate or rotate.
Electronic transitions, on the other hand, are responsible for phenomena like ultraviolet (UV) or visible light absorption and emission. In these cases, electrons move between electronic energy levels, which are typically at higher energy levels than the ground state. So, the emission of IR photons is not directly tied to electronic energy levels close to the ground state.
In summary, IR photon emission is primarily associated with vibrational and rotational transitions in molecules, and it is not contingent on the presence of empty electronic energy levels close to the ground state.
Answers
32 units
128 units
256 units
Answers
Answer:
The answer is 128
Explanation:
Answers
The balanced chemical reaction is:
N2 + 3H2 = 2NH3
We are given the amount of ammonia formed from the reaction. This is where we start our calculations.
0.575 g NH3 (1 mol NH3 / 17.03 g NH3) (3 mol H2 / 2 mol NH3) ( 2.02 g H2 / 1 mol H2) = 0.10 g H2
Answer:
Answer is 0.102.
Explanation: