2A+3B=C+3D中,A和C的相对分子质量比为3:38,D的相对分子质量为2.已知一定量的A和B恰好完全反应,生成34.2gC和0.6gD,则B的相对分子质量为()A36.5 B63 C98 D294
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![2A+3B=C+3D中,A和C的相对分子质量比为3:38,D的相对分子质量为2.已知一定量的A和B恰好完全反应,生成34.2gC和0.6gD,则B的相对分子质量为()A36.5 B63 C98 D294](/uploads/image/z/12527964-36-4.jpg?t=2A%2B3B%3DC%2B3D%E4%B8%AD%2CA%E5%92%8CC%E7%9A%84%E7%9B%B8%E5%AF%B9%E5%88%86%E5%AD%90%E8%B4%A8%E9%87%8F%E6%AF%94%E4%B8%BA3%EF%BC%9A38%2CD%E7%9A%84%E7%9B%B8%E5%AF%B9%E5%88%86%E5%AD%90%E8%B4%A8%E9%87%8F%E4%B8%BA2.%E5%B7%B2%E7%9F%A5%E4%B8%80%E5%AE%9A%E9%87%8F%E7%9A%84A%E5%92%8CB%E6%81%B0%E5%A5%BD%E5%AE%8C%E5%85%A8%E5%8F%8D%E5%BA%94%2C%E7%94%9F%E6%88%9034.2gC%E5%92%8C0.6gD%2C%E5%88%99B%E7%9A%84%E7%9B%B8%E5%AF%B9%E5%88%86%E5%AD%90%E8%B4%A8%E9%87%8F%E4%B8%BA%EF%BC%88%EF%BC%89A36.5+B63+C98+D294)
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