Because this acid dissolves the enamel on the tooth creating holes or cavities
Answer:
I can't answer that Po sorry
3. I am not sure what is meant by shape, it could be to do with structure.
4. It is magnesium nitride, as adding nitrogen makes a nitride
Answer:
The correct answer is :
Natural fibres: these fibers are found naturally in the environment such as cotton, hemp or wool, all are made naturally found fibers.
sr. no. name type
1 Cotton natural
2 Linen natural
3 Silk natural
4 Wool natural
5. Hemp natural
Artificial fibres: made from the polymerization of their monomer unit for example polyester made from coal and petroleum products.
sr. no. name type
1 Polyester artificial
2 Rayon artificial
3 Spandex artificial
4 Acrylic artificial
5. microfibers artificial
Answer:
The reaction is endothermic
Explanation:
we know that the reactants had to get energy from its surroundings which means that the reaction is endothermic
