Question

SiO2 - x - Na2SiO3 - CaSiO3

Answer 1

H2SiO3

из оксида делаем кислоту, чтобы далее вышла соль

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Answer 2

It looks like you've provided a list of chemical compounds or elements, specifically: SiO2, Na2SiO3, and CaSiO3. These are all related to silicates and minerals.

• SiO2 stands for silicon dioxide, commonly known as silica. It's a fundamental component of many minerals and rocks, including quartz.
• Na2SiO3 is sodium silicate, which is used in various industrial applications, such as detergents, adhesives, and cements.
• CaSiO3 is calcium silicate, a mineral found in nature as well as used in industrial processes, including construction materials.

If you have a specific question or topic you'd like to discuss related to these compounds, please provide more details so I can assist you better.