Assinale a alternativa que mostra onde uma onda mecânica não consegue se propagar; a) Água
b) Solo
c) Vácuo
d) Ar
e) Metal

Phosphorous acid, h3po3(aq) , is a diprotic oxyacid that is an important compound in industry and agriculture. the values of phosphorous acid are 1.30 6.70 calculate the ph for each of the given points in the titration of 50.0 ml of 1.5 m h3po3(aq) with 1.5 m koh(aq) .

How many grams of mgbr2 are needed to produce 75g or metal?

Astudent conducts an experiment to determine how the amount of water given to a plant affects its growth. what is the independent variable for this experiment?