Читать книгу Foundations of Chemistry - Philippa B. Cranwell - Страница 31

1 1 cm is the same as 0.01 m or 1 × 10−2 m.Therefore 1 cm3 = (0.01 m)3 = (1 × 10−2)3 m3 = 1 × 10−6 m3

2 1 m is 10 times bigger than 1 dm: 1 m = 10 dm.Therefore 1 m3 = 1 × 103 dm3.1 m3 is 1 × 103 (one thousand) times bigger than 1 dm3.Therefore 1 000 m3 = 1 000 × 103 dm3 = 1 × 106 dm3.

3 1 dm3 is one‐thousandth of a m3.If the concentration is equal to 1 g in 1 m3, there will be 1 000 times fewer grams in 1 dm3.So 1 g m−3 = 1 × 10−3 g dm−3.