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Vinil7 [7]
3 years ago
11

Help me please!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Chemistry
1 answer:
gulaghasi [49]3 years ago
5 0
Sunlight. Solar power!!
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Is the following statement sometimes, always or never true: Compounds
e-lub [12.9K]

Answer:

never true is the answer

explanation:

compounds are formed by two or more elements that are chemically combined with one another. They can be broken down only be chemical or electro chemical means not by physical means.

hence, the answer i have given above is correct

please mark as brainliest

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3 years ago
What lightens stains better vinegar or lemon juice also what is the hypothesis for it
katovenus [111]
Lemon juice because it releases carbon dioxide
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Which of the following was a consequence of building the Inco Superstack?
riadik2000 [5.3K]
Answer- an increase in sulfur dioxide emissions in the Sudbury area
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What is the net ionic equation for the following? :)
I am Lyosha [343]

Answer:

1. Mg (s) + 2Na+(aq) → 2Na(s) + Mg²⁺(aq)

2. 2K(s) + Cd²⁺(aq) → 2K⁺(aq) + Cd(s)

Explanation:

The net ionic equation of a reaction express only the chemical species that are involved in the reaction:

1. Mg (s) + Na2CrO4 (aq) → 2Na + MgCrO4(aq)

The ionic equation:

Mg (s) + 2Na+(aq) + CrO4²⁻ (aq) → 2Na + Mg²⁺ + CrO4²⁻(aq)

Subtracting the ions that don't change:

<h3>Mg (s) + 2Na+(aq) → 2Na + Mg²⁺</h3>

2. 2K(s) + Cd(NO3)2(aq) → 2KNO3(aq) + Cd(s)

The ionic equation:

2K(s) + Cd²⁺(aq) + 2NO3⁻(aq) → 2K⁺(aq) + 2NO3⁻(aq) + Cd(s)

Subtracting the ions that don't change:

<h3>2K(s) + Cd²⁺(aq) → 2K⁺(aq) + Cd(s)</h3>

3 0
3 years ago
What element has these characteristics MgX2, Very low density, Highly reactive, Diatomic
Kruka [31]
Copper has all those characteristics and even works on a Notatem scale.
4 0
3 years ago
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