Answer:
The correct order of increasing standard molar entropy for the noble gases is He ≤ Ne ≤ Ar ≤ Kr
Explanation:
Entropy is the measure of degree of disorderliness or randomness of a substance. Entropy increases with increasing number of electron present in an atom due to increased repulsive force of the electrons. Therefore, the standard entropy of a substance increases with an increase in their atomic masses.
For the given noble gases in this question, Helium (He) has the least atomic mass while Krypton (Kr) has the highest atomic mass.
Thus, the correct order of increasing standard molar entropy for the noble gases is He ≤ Ne ≤ Ar ≤ Kr
B. energy level of outer electrons
C. nuclear charge
D. number of valence electrons
B. It depends on how a substance was formed.
C. It is the same for every sample of every substance.
D. It depends on the amount of substance present.
An intensive property of matter is independent of the amount of substance present and is inherent to the material itself. Thus, the correct statement is 'It is the same for every sample of a single substance.' Examples of intensive properties include temperature, density, and color.
An intensive property of matter is a characteristic that does not change based on the amount of a substance. It is independent of the quantity of the substance present and is inherent to the material itself. Therefore, the statement which best describes an intensive property of matter would be 'It is the same for every sample of a single substance.'
Examples of intensive properties include temperature, density, and color. For instance, if you divide a gold bar in half, each half will have the same density and color as the original bar, because these properties are independent of the amount of substance present.
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A. AgCrO4(s) + Na2NO3(aq)
B. Ag2CrO4(s) + NaNO3(aq)
C. Ag(CrO4)2(s) + Na2NO3(aq)
D. Ag(CrO4)3(s) + Na(NO3)2(aq)
The products obtained when 2 AgNO₃ + Na₂CrO₄ reacts is Ag₂CrO₄ + 2 NaNO₃.
The reaction in which reduction and oxidation takes place simultaneously
by obtaining or losing an electron, the oxidation number of a molecule, atom, or ion varies.
In the question it is given that
AgNO₃(aq) + Na₂CrO₄(aq) → and we have to predict the products
So Silver Nitrate when reacts with Chromic Acid to from silver Chromate and sodium nitrate.
2 AgNO₃ + Na₂CrO₄ → Ag₂CrO₄ + 2 NaNO₃
Therefore Product B is the correct answer.
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Answer:
The correct answer is elevation.
Explanation:
In a geographical place, the elevation refers to the height below or above a precise reference point generally above the sea level. The term elevation is primarily applied when considering towards the points on the surface of the Earth, while geopotential height or altitude terms are used for considering the points above the surface like a spacecraft in orbit or an aircraft in flight, and depths are applied for the points underneath the surface.