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n200080 [17]
3 years ago
12

Lungs function as part of the __________ system and the __________ system.

Chemistry
2 answers:
Ostrovityanka [42]3 years ago
6 0

Answer:

immune; reproductive

Explanation:

cricket20 [7]3 years ago
5 0
Digestion and circulatory
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marissa [1.9K]
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3 years ago
Use the link Standard Reduction Potentials. Write net equations for the spontaneous redox reactions that occur during the follow
GalinKa [24]

Answer:

a) Fe(s) + Ni^2+(aq) ----> Fe^2+(aq) + Ni(s)

b) no reaction

c) no reaction

d) 2Mg(s) + 2H2O(l)-----> 2Mg^2+(aq) + O2(g) +4H^+(aq)

e) no reaction

Explanation:

It is important to say here that the ability of a particular chemical specie to displace another chemical specie is dependent on the relative standard reduction potentials of the species involved.

All the reactions stated above are redox reactions. Let us take reaction E as an example. Mg^2+ has a reduction potential of -2.37 V while Cr^3+ has a reduction potential of -0.74V. Since the reduction potential of magnesium is more negative than that of chromium, there is no reaction when a piece of chromium metal is dipped into a solution of Mg^2+.

Similarly, though metals displace hydrogen gas from dilute acids, metals that are less than hydrogen in the reactivity series cannot do that. This explains why there is no reaction when copper and silver are dipped into dilute acid solutions.

Reaction occurs when iron is dipped into a nickel solution because the reduction potential of Fe^2+ is far more negative than that of Ni^2+.

7 0
3 years ago
Could the mechanism for the reaction of crystal violet with sodium hydroxide consist of one elementary step? Explain.
kondaur [170]

Answer:

Yes

Explanation:

Let's write the reaction as

CV⁺+ OH⁻ ⟶ CVOH

The reaction is first order in [CV⁺] and in [OH⁻], so the rate law is

rate = k[CV⁺][OH⁻]

A bimolecular collision between a crystal violet ion and a hydroxide ion as an elementary step would predict the observed rate law.

However, other plausible mechanisms may predict the same rate law.

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3 years ago
Analyze the following chemical combinations<br>a) MgO<br>b)CaCl2<br>c) Na2O​
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The answer is B for sure
8 0
3 years ago
Which of the following is an accurate statement
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What are the statements?
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