(2013? Shihezi Sanmo) The trademark of concentrated sulfuric acid in the laboratory is as shown in the figure: Calculated based on relevant information: (column calculation) (1) The sulfuric acid dissolved in the reagent bottle

(1) From the label, we can know that the volume of the bottle of concentrated sulfuric acid is 500mL = 500cm3, 1.84g/cm3.

The mass of the bottle of concentrated sulfuric acid solution before unsealing = 500cm3 × 1.84g/ cm3=920g．

(2) Suppose the mass of the concentrated sulfuric acid is p>

x=20g.

So the answer is:

(1) The mass of the sulfuric acid solution in the reagent bottle is 920g;

(2) The mass of the concentrated sulfuric acid required is 20g ．