Elements in column (group) 7a (17) all form which ion? a 0 b +2 c -2 d +1 e -1

Si una estrella no tiene paralaje medible, ¿qué puedes inferir?

Match the mixture with the substance// i really need on this guys (it’s a pic btw)

Phosphorous acid, h3po3(aq) , is a diprotic oxyacid that is an important compound in industry and agriculture. p k a1 p k a2 1.30 6.70 calculate the ph for each of the points in the titration of 50.0 ml of 1.5 m h3po3(aq) 1.5 m h 3 po 3 ( aq ) with 1.5 m koh(aq). 1.5 m koh ( aq ) .