Answer:
The correct answer is option 4-pass laws to help solve economic and social problems
Explanation:
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The progressive movement was from the decade of 1890 until 1920. The objectives were to eliminate the problems of industrialization, corruption, urbanization.
The correct answer is option 4-pass laws to help solve economic and social problems
The Progressive movement aimed to pass laws to help remedy economic and social problems, rather than balance the federal budget or limit direct citizen control over the government.
The Progressive movement in the United States, which spanned the late 19th to early 20th centuries, primarily focused on making political, economic, and social reforms to better serve the interests of the majority of Americans. The goal of the movement was not to balance the federal budget by decreasing spending nor to limit direct citizen control over government, but to pass laws that could alleviate or address socio-economic issues. Therefore, among the options given, option (4), pass laws to help solve economic and social problems, best describes a major goal of the Progressive movement.
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temperature and number of molecules
pressure and volume
pressure and temperature
Answer: The correct answer is pressure and volume.
Explanation:
Boyle's law is one of the law used to determine the combine gas law.
This law states that the pressure of the gas is inversely proportional to the volume of the gas at constant temperature and number of moles.
Mathematically,
(At constant temperature and number of moles)
or,
where, k is the proportionality constant
P = Pressure of the gas
V = Volume of the gas
Hence, the correct answer is pressure and volume.
Answer:
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Answer is: deposition.
Deposition is a thermodynamic process in which gas transforms into solid without passing through the liquid phase.
For example, forming snow in clouds directly from water vapor.
During deposition phase change, energy is released.
Another example, the phase change H₂(g) → H₂(s) is called deposition and the enthalpy change, ΔH, for this phase change has a negative (-) sign.
A gas changes directly to a solid during deposition, hence option 2 is correct.
Deposition is the process by which a substance goes straight from the gas to the solid state after cooling, bypassing the liquid state. Examples of substances that undergo deposition include naphthalene, camphor, iodine, and ammonium chloride.
The opposite is sublimation, through this process, a gas can become a solid without ever entering the liquid state. When gas particles get extremely cold, it happens.
Learn more about Deposition here:
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(2) HC2H3O2 and H3PO4
(3) KHCO3 and KHSO4
(4) NaSCN and Na2S2O3
Answer : The correct option is, (2)
Explanation :
Arrhenius theory : It sates that an acid is a type of substance that ionizes in the water to give the hydronium ion or hydrogen ion and a bases is a type of substance that ionizes in the water to give hydroxide ion .
Or we can say that,
Arrhenius acid are those which can easily gives the hydrogen ion in a solution and Arrhenius base are those which can easily gives the hydroxide ion in a solution.
In option 1, can easily gives the hydrogen ion but can not gives the hydrogen ion due to stronger O-H bonding. So, these formulas does not represent Arrhenius acids.
In option 2, and can easily gives the hydrogen ion. So, these formulas represent Arrhenius acids.
In option 3, and can not gives the hydrogen ion because both are the salts. So, these formulas does not represent Arrhenius acids.
In option 4, and can not gives the hydrogen ion because no hydrogen present in the compound. So, these formulas does not represent Arrhenius acids.
Hence, (2) represent Arrhenius acids.