Can Hydrofluoric Acid be used to dissolve rocks at beaches?
Hydrofluoric acid can dissolve almost anything, including your bones. Even a tiny bit on your finger can lead to extreme pain and probably amputation of fingers or your entire hand. Please do not play around with HF. It is not a friendly acid at all. It is only moderately manageable in a lab setting, and even there it is not really 'safe'.If you want to dissolve rocks, there are other options. Why do you want to dissolve rocks? And why specifically at the beach?I am also wondering if you meant to say hydroCHLORIC acid, which geologists DO use (in extremely diluted form). HCl (dilute) is handy because carbonate rocks react (dissolve with bubbles) with it and we can therefore use it to recognize carbonates, and even crudely distinguish between 'pure' CaCO3 and magnesium bearing CaCO3.HCl (in dilute form) is unlikely to burn you, however it WILL cause your fabric clothing to eventually degrade and 'dissolve', leaving nice raggedy holes in your jeans, for instance. HCl in concentrated form will cause acid burns, but it isn't nearly as dangerous to human bodies as HF. Stay well away from HF.
What dead or fictional famous person would be a great Quora contributor? Whether it be a president or character from film/literature, who could contribute great content? Why would that person be awesome on Quora?
Most definitely BATMAN .He knows about everything and to him every life matters .When he will be asked by Quora authorities to conform his ID and to create his official account by taking a selfie, he won't. Instead one night when Adam D'Angelo is working in his office and feels a bit windy and goes to close the window and turns around, Woah! What's that? Oh yeah! BATMAN, and he says to him in his voice, "I am here" and without delay we will see his official profile on Quora.His bio would read: It's not who I am underneath, but what I do that defines me. "I am vengeance, I am the night, I am Batman"Within five minutes he will have, like 100 million followers(on the other hand people on Facebook would have no idea of these events, because they don't know anything about Quora). Then we will see a deluge of question ranging from Who is Batman?, How much money does he make?, Is he gay?, Does he support Donald Trump for president? etc.. But he won't be answering them, none of them. So what's the point of him being on Quora? Well, when we come across those questions like How do I get out of an abusive relationship?, What should I do when I go home late from work and some men harass me?, and that is when the Caped Crusader steps in, with all his technology and knowledge he will trace the OP and take care of business for them without anyone knowing, to make sure they're safe. And sometimes he would answer questions but only topics under Inspiration, determination, overcoming your fears.He won't be on Quora for fun or for upvotes or appreciation of any kind. He would be here for the sole purpose, the same reason he is there outside for. "To keep people safe" Because he's not a hero. He's a silent guardian. A watchful protector. A Dark Knight.