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alex41 [277]
3 years ago
6

Which of the following ions is in the lowest oxidation state?

Chemistry
2 answers:
hodyreva [135]3 years ago
7 0

Answer:

B. Cr in Cr_{2}O_{7}^{-2}

Explanation:

Let us first find the oxidation numbers in each of the following scenarios

A. The oxidation number of P in H_{2}PO_{4}^{-} \\ is +5

    because 2H + 4O + P = -1

                    2(1) +4(-2)  + P = -1

                              P = 5

B. The oxidation number of Cr in Cr_{2}O_{7} ]^{-2} \\ is

                 2Cr + 7O = -2

                 2Cr + 7(-2) = -2

                           Cr = 6

C. The oxidation number of Fe in Fe_{2}O_{3} is +3

                          2Fe + 3O = 0

                          2Fe + 3(-2) = 0

                               Fe = 3

The final answer is Cr

bulgar [2K]3 years ago
5 0

Answer:

I believe it is a hope this helps

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nataly862011 [7]

Answer:

es procariota la 1 creo

Explanation:

5 0
3 years ago
What happened to the FREQUENCY of the wave as the instrument got bigger?
Archy [21]

Answer:

The wavelengths at which resonance occurs are proportional to the length of the instrument, so you can play different notes by changing the length. In general the larger the instrument the longer the wavelength of the fundamental and the lower the frequency range of the instrument.

Explanation:

4 0
3 years ago
Balance the following chemical equation Na + Cl2 -> NaCl and explain how the balanced equation models the law of conservation
Alexus [3.1K]

Answer:

2 Na + 1 Cl2 -> 2 NaCl

Explanation:

The answer is really simple, because if you have 1 nonmetal element that has a subscript of 2, you need to multiply the product and the first reactant by 2 to balance it.

7 0
3 years ago
Which property can be used to tell gold and pyrite apart?
zubka84 [21]

Answer:

D. Malleability

Explanation:

Gold is made up of the element Au and it is a metal.

Pyrite is iron sulfide and it is a non-metal.

  • They have very similar appearance to such an extent that pyrite is widely called the fool's gold.
  • To distinguish between the two, we simply explore their metallic properties.
  • Gold is malleable. Pyrite is not. It will crumble under pressure.
6 0
3 years ago
Part D<br> Explain how your model is different from the model in the picture.
Ipatiy [6.2K]

Answer:

I am explain you in image

8 0
3 years ago
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