A.(a+1)mol | B.(0.4+0.05a)mol | C.(a+0.05)mol | D.0.05(a+1)mol |
A.1:1 | B.1:2 | C.1:3 | D.2:1 |
A.32gO2所含的原子数目为NA | B.1 mol CO2的质量为44g/mol |
C.44gCO2的体积为22.4L | D.NA个CO2的质量与CO2的相对分子质量在数值上相同 |
A.5mol/L | B.2mol/L | C.1mol/L | D.10mol/L |
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