Select all the correct answers. Which reactions are single displacement reactions?

2NaBr + CaF2 → 2NaF + CaBr2
SnO2 + 2H2 → Sn + 2H2O
4Na + O2 → 2Na2O
2KClO3 → 2KCl + 3O2
2Al + 6HCl → 2AlCl3 + 3H2

A32 year old immigrant from a patriarchal country is giving birth. as she is delivering the baby, she tearfully confesses to her doctor that this is her 4th child and she simply cannot handle any more children. she tells the doctor that her husband refuses to use contraception or allow her to, and she begs her doctor to tie her tubes and not tell her husband. the doctor complies. was hipaa violated? why or why not?

If i make a solution by adding 83grams of sodium hydroxide to 750ml i’d water what is the molarity of sodium hydroxide

Using data from seismic waves, geologists have learned that earth’s interior is made up of several