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Cho 18,1 gam hỗn hợp X gồm A, B, C tác dụng hết với dung dịch H2SO4 loãng (vừa đủ), thu được dung dịch Y và 10,08 lít khí H2 (đktc). Cô cạn Y thu được m gam muối. Tính m.
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all than that into because causes either combing also due Paper can be recycled by reducing it to pulp and (1)……………….it with pulp from newly harvested wood. As the recycling process (2)……………….. the paper fibers to breakdown, each time paper is recycled its quality decreases. This means that (3)…………………a higher percentage of new fibers must be added, or the paper down cycled (4)…………………..lower quality products. Any writing or coloration of the paper must first be removed by deinking, which (5)…….removes fillers, clays, and fiber fragments. Almost (6) ……………….…….paper can be recycled today, but some types are harder to recycle …… …… (7) …… others. Papers coated with plastic or alumium foil, and papers (8)…………………..are waxed, pasted, or gummed are usually not recycled (9)………………….the process is too expensive. Gift wrap paper also cannot be recycled (10)…………………to its low quality.

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