Ordinary glass is manufactured from silica, CaCO3 and

premier d

9 years ago

option a is correct but potassium trioxocarbonate IV can be used instead of sodium trioxocarbonate IV to obtain a harder glass

biebele1

2 years ago

yes sodium trioxocarbonate can be used to obtain glass

Som15432

1 year ago

The correct answer is A. Na2CO3. Here's why:
* Ordinary glass (soda-lime glass) is made from a mixture of:
* Silica (SiO2) - which is usually sand.
* Calcium carbonate (CaCO3) - often from limestone.
* Sodium carbonate (Na2CO3) - also known as soda ash.
* The sodium carbonate is added to lower the melting point of the silica, making it easier to work with.
Therefore the answer is A.