The answer is A. It's mainly just a hypothesis that there was once a landmass that existed 300-200 million years ago in which all continents were joined.
Boric acid, H3BO3, in aqueous solution would only give out one H+ ion. As it is also produce OH ion and by hydrolysis it produces one proton. <span>All the boron compounds (BX3) are having only 6 valence electrons in it and should follow the octet rule by taking another electron.</span>
B(OH)3 + 2 H2O → B(OH)4− + H3O
5.75 Grams per cm^3
You do mass divided by volume
Answer: Your answer would be D
Explanation: Sorry if i get it wrong ! (but good luck and make sure to rate)
