求化学高手解答英文化学题

来源：百度知道 编辑：UC知道 时间：2024/05/09 14:13:46
a nameless element (X) was found to occur in three different substances (A, B and C). The relative molecular masses of A, B, and C were found to be 33.70, 79.40 and 252.20 respectively, compared to an assigned value of exactly 2.00 for H2. Subsequently, these substances were subjected to elemental analysis and were found to contain 94.1%, 59.9% and 25.2% of X respectively by mass.

What is the (likely) relative atomic mass of X, on this scale?

What would be the correct chemical symbol for X?

33.7 x 94.1% =31.7
79.4 x 59.9% = 47.56
252.40 x 25.2% = 63.60

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33.7 x 94.1% =31.7
79.4 x 59.9% = 47.56
252.40 x 25.2% = 63.60

综上：其相对原子质量应为 16 为 O（氧元素）