What is the chemical formula and net ionic equations for all three solutions.

See answer below

Explanation:

As you are asking for chemical formula and ionic equation, then, I will assume that after the station #5 below, are the solutions you are requiring.

You are also not specifing if you want for example, result of solution 1 + solution 3. If you need that, please post that on another question.

Now for the chemical formula, you need to identify the elements in all 3 solutions, and also the type of compound.

1. Solution 1 Barium Chloride:

In this case we have Barium on one side, and Chlorine on the other side, the symbol for those are Ba and Cl. As Barium have the +2 oxidation state, cause is the only one that it can have, when it's next to an halide like chlorine or bromine, it will form a binary salt. The halides, usually work with the lowest oxydation state. In the case of Chlorine it will be -1, so, the formula will be:

BaCl₂

And the net ionic equation will be the chemical equation that shows how the charges and atoms are balanced. In this case it would be:

Ba²⁺ + 2Cl⁻ > BaCl₂

2. Solution 2 and 3, Copper (II) nitrate and Copper(II) sulfate:

In this case I will work with both, because both of the solution have copper and the only difference is the anion, which is nitrate in one, and sulfate on the other. In this cases, we have a tertiary salt, The copper's symbol is Cu, and is working with it oxydation state +2. Nitrate is an anion and have the formula NO₃ working with the oxydation state -1. Sulfate is SO₄ and works with oxydation state -2 instead.

The chemical formula and ionic equation for both will be:

Copper(II) nitrate: Cu(NO₃)₂

Copper(II) sulfate: CuSO₄

And the net equations:

Copper nitrate: Cu²⁺ + 2NO₃⁻ > Cu(NO₃)₂

Copper sulfate: Cu²⁺ + SO₄²⁻ > CuSO₄

Hope this helps

i think that the answer is c

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.