Which of the following elements has the greatest electron affinity among the halogens?
Answer: A. Chlorine
2-methylbutane, like similar molecules, exhibits the type of intermolecular force known as London dispersion forces due to its molecular structure of carbon and hydrogen atoms.
The substance 2-methylbutane exhibits the type of intermolecular forces known as London dispersion forces. These forces arise due to temporary shift in electron clouds causing temporary dipoles which induce dipoles in neighboring molecules. This is the simplest type of intermolecular forces and it can occur in all types of molecules, but is the dominant force in nonpolar and symmetrical molecules. Hydrogen bonding or dipole-induced forces do not play a role in this substance as its molecular structure of carbon and hydrogen atoms does not allow for those types of intermolecular interactions.
As the substance 2-methylbutane is a branched variant of butane, it has a slightly different structure, but this does not change the basic type of intermolecular forces present. Other similar molecules like propane and butene also exhibit similar types of intermolecular forces. Remember, intermolecular forces are not intramolecular forces which are much stronger and keep the atoms within a molecule together. Intermolecular forces are what keep molecules attached to each other which greatly effects physical properties of a substance like boiling point.
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Sam would have to purchase 42 cans of dog food each week.
Determine what the question is asking. Write down the relevant information in simple statements. Assign symbols to unknown values that need to be found. Determine how the statements relate to each other mathematically.
To find the answer we can set up an equation : 3 (x) (d)
x = number of cans each dog eats
d = the number of days in a week.
Thus,
Number of Cans to purchase = 3 (2) (7)=42
Therefore, Sam would have to purchase 42 cans of dog food each week.
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(2) grams of NaCl per liter of solution
(3) moles of NaCl per liter of water
(4) moles of NaCl per liter of solution
Answer:
The correct option is (4)
Explanation:
Molarity (M) is generally defined as the number of moles of a solute per liter of the solution.
The formula for molarity (from the definition above) is
M = number of moles (n) ÷ volume (in liters or dm³)
The unit for molarity is mol/L or mol/dm³
From the above, it can be deduced that the molarity of an aqueous solution of common salt (NaCl) is the number of moles of NaCl per liter of the salt solution.
large amounts of matter.
(2) Small amounts of matter are converted into
large amounts of energy.
(3) Heavy nuclei are split into lighter nuclei.
(4) Light nuclei are combined into heavier nuclei
Fusion and fission are nuclear reactions that convert a small amount of matter into a large amount of energy.
The fusion reaction is the reaction in which the molecules combine and form energy. The fission reaction is the decomposition nuclear reaction where the matter is degraded into a small entity and the energy is released.
The energy is not converted into matter in both reactions. There is no splitting or combination of nuclei in both reactions.
Thus, the small amount of matter is converted into a large amount of energy is correct.
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