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Viktor [21]
4 years ago
11

Which of the following describes an element that is reduced in a reaction? It acts in the reactant that is the reducing agent. I

t has a decrease in its oxidation number. Cd yields Cd2+ + 2e− Zn + Cu2+ yields Zn2+ + Cu
Chemistry
1 answer:
stiks02 [169]4 years ago
4 0
It has a decrease in oxidation number

The process of reduction is when the oxidation number of a chemical specie is lowered, or when the specie gains electrons. A chemical specie undergoing reduction will act as an oxidizing agent, because it will oxidize the other reactant by itself getting reduced.
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Go to the Phase Changes tab. Select the particular molecule, and set the temperature to the given values by using the stove to i
Kipish [7]

Answer:

2. Argon at 160K and approximately 6 atm pressure

5. Neon at 50K and approximately 10 atm pressure

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8. Oxygen at 194K and approximately 2 atm pressure

Explanation:

Super critical fluid is formed when temperature rises beyond critical point. The state of molecules can be liquid or gas. The pressure should be above the certain level with an introduction of different gases at minimum of 2 atm pressure.

3 0
3 years ago
A certain second-order reaction (B→products) has a rate constant of 1.30×10−3 M−1⋅s−1 at 27 ∘C and an initial half-life of 224 s
soldier1979 [14.2K]

Answer:

       \large\boxed{\large\boxed{0.291M}}

Explanation:

By definition one <em>half-life</em> is the time to reduce the initial concentration to half.

For a <em>second order reaction </em>the rate law equations are:

              \dfrac{d[B]}{dt}=-k[B]^2

             \dfrac{1}{[B]}=\dfrac{1}{[B]_0}+kt

The <em>half-life</em> equation is:

            t_{1/2}=\dfrac{1}{k[A]_0}

Thus, substitute the<em> rate constant</em>  1.30\times 10^{-3}M^{-1}\cdot s^{-1} and the <em>half-life </em>time <em>224s</em> to find [A]₀:

           224s=\dfrac{1}{1.30\times10^{-3}M^{-1}\cdot s^{-1}[A]_0}

           [A]_o=0.291M

7 0
3 years ago
25. The periodic table is based on an element's A. atomic number. B. molecular size. C. molecular mass. D. atomic mass.
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Answer:

water can dissolve ionic and polar molecules.

6 0
3 years ago
Which statement explains why H2O has a
Rama09 [41]

Answer:

3

Explanation:

H2O has a higher intermolecular force (hydrogen bonding) where N2 only has London Dispersion.

5 0
2 years ago
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