Answer:
True
Explanation:
Amorphous solid is the designation given to a structure that has no long-range (atomic) spatial ordering, such as regular solids. For a material to be considered as regular solid it must have a defined crystalline structure, which corresponds to a positioning of the atoms that compose it. Amorphous materials have no definite geometric shape, may even have some rigidity like ordinary solids, but their atoms are not in spatial organization (at the microscopic level), in which case amorphous solids have no general order, with individual clusters joined together only. by the forces of Van der Waals.
Answer:
moist air is less dense than dry air because water has a lower molecular weight than nitrogen and oxygen
Answer:
Water vapor is a relatively light gas when compared to diatomic Oxygen and diatomic Nitrogen. Thus, when water vapor increases, the amount of Oxygen and Nitrogen decrease per unit volume and thus density decreases because mass is decreasing.
B:cubic meters
C:grams per cubic centimeter
D:square meters
Answer:
The correct answer is C.
Explanation:
To solve this problem, we should first recall possible units for mass and volume. Mass can be represented with units of grams, kilograms, etc. Volume has units of cubic meters, cubic centimeters, etc.
Therefore, since we know that density is mass divided by volume, the only answer that makes sense here is C. grams per cubic centimeter (where per signifies that grams are being divided by cubic centimeters).
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The reaction will proceed in the forward direction to reach equilibrium.
To determine which reaction will go in order to reach equilibrium, we need to compare the initial number of moles of reactants to the stoichiometric coefficients of the balanced equation. The balanced equation for the reaction between NH₃, N₂, and H₂ is:
NH₃ + N₂ ↔ 2NH₃
Since the initial number of moles of NH₃, N₂, and H₂ are the same (1.00 mole each), the reaction will proceed in the forward direction to reach equilibrium.
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The correct answer is conduction
Which compound could be represented by X?
(1) CH (3) C3H8
(2) C2H4 (4) C4H10
The organic compound X in the given reaction is ethylene, C₂H₄. The two chlorine atoms are joined to the double bond of ethylene and form C₂H₄Cl₂. Hence, option 2 is correct.
Halogenation is the electrophilic addition of any halogen atom such as Cl. F etc. to an organic compound mostly in the presence of acids. Halogens are more reactive towards alkenes and alkynes.
The unsaturated centers in the organic compound are electron deficient and they attract negative halogen ions forming respective halides. Ethylene is the primary alkene with the skeleton CH₂ =CH₂.
The incoming Cl groups attack the double bond and joins the carbon atom to form CH₂Cl - CH₂Cl or C₂H₄Cl₂. Hence, the compound X in the given reaction is C₂H₄Cl₂. Thus, option 2 is correct.
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