Question

C-CO2-CO2-H2CO3-CACO3-CA(OH)2-CA3(PO3)2-CASO4

Answer 1

C + O2 = CO2

CO2 + H2O = H2CO3

H2CO3 + Ca(OH)2 = CaCO3 + 2H2O

CaCO3 + 2HCl = CaCl2 + H2O + CO2

CaCl2 + 2NaOH = Ca(OH)2 + 2NaOH

3Ca(OH)2 + H3PO4 = Ca3(PO4)2 + 3H2O

Ca3(PO4)2 + 3H2SO4 = 3CaSO4 + 2H3PO4

Answer 2

The sequence you provided appears to be a series of chemical compounds connected by dashes. Each compound represents a different chemical formula. Here's a breakdown of each compound:

1. C: Carbon
2. CO2: Carbon Dioxide
3. CO2: Carbon Dioxide (again)
4. H2CO3: Carbonic Acid
5. CaCO3: Calcium Carbonate
6. Ca(OH)2: Calcium Hydroxide
7. Ca3(PO3)2: Calcium Phosphite
8. CaSO4: Calcium Sulfate

It seems you've listed various compounds involving carbon (C) and calcium (Ca), as well as other elements such as hydrogen (H), oxygen (O), and phosphorus (P). These compounds have different properties and applications in various fields, such as chemistry, geology, and medicine. Let me know if you have any specific questions about these compounds or if there's anything else I can assist you with!