甲物质的密度为5g/cm3,乙物质密度为2g/cm3,各取一定质量混合后密度为3g/cm3.假设混合前后总体积保持不变,则混合甲、乙两种物质后总体积减少A.2% B.3% C.5% D.10%
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![甲物质的密度为5g/cm3,乙物质密度为2g/cm3,各取一定质量混合后密度为3g/cm3.假设混合前后总体积保持不变,则混合甲、乙两种物质后总体积减少A.2% B.3% C.5% D.10%](/uploads/image/z/536485-13-5.jpg?t=%E7%94%B2%E7%89%A9%E8%B4%A8%E7%9A%84%E5%AF%86%E5%BA%A6%E4%B8%BA5g%2Fcm3%2C%E4%B9%99%E7%89%A9%E8%B4%A8%E5%AF%86%E5%BA%A6%E4%B8%BA2g%2Fcm3%2C%E5%90%84%E5%8F%96%E4%B8%80%E5%AE%9A%E8%B4%A8%E9%87%8F%E6%B7%B7%E5%90%88%E5%90%8E%E5%AF%86%E5%BA%A6%E4%B8%BA3g%2Fcm3.%E5%81%87%E8%AE%BE%E6%B7%B7%E5%90%88%E5%89%8D%E5%90%8E%E6%80%BB%E4%BD%93%E7%A7%AF%E4%BF%9D%E6%8C%81%E4%B8%8D%E5%8F%98%2C%E5%88%99%E6%B7%B7%E5%90%88%E7%94%B2%E3%80%81%E4%B9%99%E4%B8%A4%E7%A7%8D%E7%89%A9%E8%B4%A8%E5%90%8E%E6%80%BB%E4%BD%93%E7%A7%AF%E5%87%8F%E5%B0%91A.2%25+B.3%25+C.5%25+D.10%25)
甲物质的密度为5g/cm3,乙物质密度为2g/cm3,各取一定质量混合后密度为3g/cm3.假设混合前后总体积保持不变,则混合甲、乙两种物质后总体积减少A.2% B.3% C.5% D.10%
甲物质的密度为5g/cm3,乙物质密度为2g/cm3,各取一定质量混合后密度为3g/cm3.假设混合前后总体积保持不变,则混合甲、乙两种物质后总体积减少
A.2% B.3% C.5% D.10%
甲物质的密度为5g/cm3,乙物质密度为2g/cm3,各取一定质量混合后密度为3g/cm3.假设混合前后总体积保持不变,则混合甲、乙两种物质后总体积减少A.2% B.3% C.5% D.10%
,各取一定质量混合后密度为3g/cm3.假设混合前