| 1. | Alkyl halides are reacted with sodium nitrite .
卤化烷与亚硝酸钠反应。 |
| 2. | The sodium is removed with cation exchange resin .
钠用阳离子交换树脂来分离。 |
| 3. | Cooking-salt consists of atoms of sodium and chlorine .
食盐由钠原子和氯原子构成。 |
| 4. | The usual counter-ions are sodium, potassium and ammonium .
反离子通常是钠，钾和铵。 |
| 5. | Sodium stearate is soap .
硬脂酸钠就是肥皂。 |
| 6. | Sodium is the sixth most abundant element in the earth's crust .
钠是地表中含量第6丰富的元素。 |
| 7. | Sodium stearate is soap .
硬脂酸钠即肥皂。 |
| 8. | Anorthite and albite are important calcium-containing feldspars .
钙长石与钠长石是重要的含钙长石。 |
| 9. | They used lumps of nitre, a sodium compound from the ship .
他们使用了船上的硝石块-钠的一种化合物。 |
| 10. | Sodium and potassium are about the same in their chemical properties .
钠和钾的化学性质几乎是相同的。 |
