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12 CHI TEST2 U RO ESANTION16 100%

1) H3PO4 + metal ___________________________________________________________ 2) H3PO4 + oxid bazic ___________________________________________________________ 4 Hidroxidul de potasiu intră în componenţa produselor de uz casnic de curăţare a vaselor din oţel inoxidabil.

https://www.pdf-archive.com/2016/04/12/12-chi-test2-u-ro-esantion16/

12/04/2016 www.pdf-archive.com

54936165-Istoria-Veche 55%

datate prin metoda potasiu-argon la aproximativ 1,8 – 2 milioane de ani î.Hr..

https://www.pdf-archive.com/2017/07/25/54936165-istoria-veche/

25/07/2017 www.pdf-archive.com

Electrochimie 47%

hidroxidul de sodiu, hidroxidul de potasiu, hidroxidul de bariu, hidroxidul de calciu;

https://www.pdf-archive.com/2017/01/12/electrochimie/

12/01/2017 www.pdf-archive.com