?

HYPOTHESIS:

The amount of carbonate in an ore sample can be measured by adding hydrochloric acid to the sample until it stops fizzing.

QUESTION

Describe briefly how you would carry out a preliminary investigation to find suitable values to use for this investigation.

This person had been my best friend for about 9 years we were really close, we're in all the same classes, we live in the same street and have been to the same primary and secondary schools together, and suddenly she started looking for excuses not to talk to me and started treating me like **** and then we just stopped being friends. I really dislike her and what she has become now and I don't want to sound creepy or stalker-ish but for some reason ever since we stopped being friends I keep on having dreams about her being my friend again like almost every single night since then. In every dream it's always in school and we're laughing a lot about silly little things just like we used to, and every time I wake up I feel slightly disappointed because I know we're never going to be like that ever again, I just want to know why I keep having dreams about her because it's getting really annoying now especially when I'm trying to forget about her -_-

My ukulele has elastic strings and my friends say that I should replace them with steel strings. How are they different? (besides the obvious fact that they're made of different materials) and which ones are better?

I have some nooby cheap earphones and I can't really feel the bass when I listen to my music, I wanna get beats headphones but I'm worried when I get them that they wont be as good as I thought they were because some people say that they're good and some people in my school say they're crap :///

I keep trying to put it on my tumblr page but every time I try to play it, it says there's an error -3-