A national day is a day on which celebrations mark the nationhood of a nation or state. It may be the date of independence, of becoming a republic, or a significant date for a patron saint or a ruler (such as a birthday, accession, or removal). The national day is often a public holiday.
Answer:
2.7005 g/cm²
explanation: as we know density=mass/volume
Answer:
HCl is the correct answer
