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Minchanka [31]
3 years ago
5

Theresa creates an experiment where she mixes two red-colored substances together in a container and observes the solution slowl

y changing from red to blue for the next eight minutes. The solution becomes completely blue after eight minutes. What does this represent about the type of change happening in the container? A chemical change started immediately and finished at eight minutes. A non-chemical change started immediately and finished at eight minutes. A chemical change occurred at four minutes. A non-chemical change occurred at four minutes.
Chemistry
2 answers:
Elza [17]3 years ago
8 0

Answer:

A

Explanation:

I did it on edge

Goshia [24]3 years ago
3 0

Answer: Answer (A)    

Explanation:

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What is the metal cation in K,SO,? (cation is pronounced cat-ion and refers to a positively charged ion)
slamgirl [31]

Answer:

Potassium cation = K⁺²

Explanation:

The metal cation in K₂SO₄ is K⁺². While the anion is SO₄²⁻.

All the metals have tendency to lose the electrons and form cation. In given compound the metal is potassium so it should form the cation. The overall compound is neutral.

The charge on sulfate is -2. While the oxidation state of potassium is +1. So in order to make compound overall neutral there should be two potassium cation so that potassium becomes +2 and cancel the -2 charge on sulfate and make the charge on compound zero.

2K⁺²  ,  SO₄²⁻

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How many atoms of oxygen in 4 molecules of HNO3?
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